git.delta.rocks / unique-network / refs/commits / 0a7dd513e470

difftreelog

yarn fix

Daniel Shiposha2022-07-04parent: #86d26e3.patch.diff
in: master

23 files changed

modifiedtests/src/rmrk/acceptNft.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/acceptNft.test.ts
+++ b/tests/src/rmrk/acceptNft.test.ts
@@ -1,103 +1,103 @@
-import { expect } from "chai";
-import { getApiConnection } from "../substrate/substrate-api";
+import {expect} from 'chai';
+import {getApiConnection} from '../substrate/substrate-api';
 import {
-    createCollection,
-    mintNft,
-    sendNft,
-    acceptNft
-} from "./util/tx";
-import { NftIdTuple } from "./util/fetch";
-import { isNftChildOfAnother, expectTxFailure } from "./util/helpers";
+  createCollection,
+  mintNft,
+  sendNft,
+  acceptNft,
+} from './util/tx';
+import {NftIdTuple} from './util/fetch';
+import {isNftChildOfAnother, expectTxFailure} from './util/helpers';
 
-describe("integration test: accept NFT", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: accept NFT', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = "//Alice";
-    const bob = "//Bob";
+  const alice = '//Alice';
+  const bob = '//Bob';
 
-    const createTestCollection = async (issuerUri: string) => {
-        return await createCollection(
-            api,
-            issuerUri,
-            "accept-metadata",
-            null,
-            "acpt"
-        );
-    }
+  const createTestCollection = async (issuerUri: string) => {
+    return await createCollection(
+      api,
+      issuerUri,
+      'accept-metadata',
+      null,
+      'acpt',
+    );
+  };
 
-    it("accept NFT", async () => {
-        const ownerAlice = alice;
-        const ownerBob = bob;
+  it('accept NFT', async () => {
+    const ownerAlice = alice;
+    const ownerBob = bob;
 
-        const aliceCollectionId = await createTestCollection(alice);
-        const bobCollectionId = await createTestCollection(bob);
+    const aliceCollectionId = await createTestCollection(alice);
+    const bobCollectionId = await createTestCollection(bob);
 
-        const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
 
-        await sendNft(api, "pending", ownerBob, bobCollectionId, childNftId, newOwnerNFT);
-        await acceptNft(api, alice, bobCollectionId, childNftId, newOwnerNFT);
+    await sendNft(api, 'pending', ownerBob, bobCollectionId, childNftId, newOwnerNFT);
+    await acceptNft(api, alice, bobCollectionId, childNftId, newOwnerNFT);
 
-        const isChild = await isNftChildOfAnother(api, bobCollectionId, childNftId, newOwnerNFT);
-        expect(isChild).to.be.true;
-    });
+    const isChild = await isNftChildOfAnother(api, bobCollectionId, childNftId, newOwnerNFT);
+    expect(isChild).to.be.true;
+  });
 
-    it("[negative] unable to accept NFT by a not-an-owner", async () => {
-        const ownerAlice = alice;
-        const ownerBob = bob;
+  it('[negative] unable to accept NFT by a not-an-owner', async () => {
+    const ownerAlice = alice;
+    const ownerBob = bob;
 
-        const aliceCollectionId = await createTestCollection(alice);
-        const bobCollectionId = await createTestCollection(bob);
+    const aliceCollectionId = await createTestCollection(alice);
+    const bobCollectionId = await createTestCollection(bob);
 
-        const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
 
-        await sendNft(api, "pending", ownerBob, bobCollectionId, childNftId, newOwnerNFT);
-        const tx = acceptNft(api, bob, bobCollectionId, childNftId, newOwnerNFT);
+    await sendNft(api, 'pending', ownerBob, bobCollectionId, childNftId, newOwnerNFT);
+    const tx = acceptNft(api, bob, bobCollectionId, childNftId, newOwnerNFT);
 
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    it("[negative] unable to accept non-existing NFT", async () => {
-        const collectionId = 0;
-        const maxNftId = 0xFFFFFFFF;
+  it('[negative] unable to accept non-existing NFT', async () => {
+    const collectionId = 0;
+    const maxNftId = 0xFFFFFFFF;
 
-        const owner = alice;
-        const aliceCollectionId = await createTestCollection(alice);
+    const owner = alice;
+    const aliceCollectionId = await createTestCollection(alice);
 
-        const parentNftId = await mintNft(api, alice, owner, aliceCollectionId, "parent-nft-metadata");
+    const parentNftId = await mintNft(api, alice, owner, aliceCollectionId, 'parent-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
 
-        const tx = acceptNft(api, alice, collectionId, maxNftId, newOwnerNFT);
+    const tx = acceptNft(api, alice, collectionId, maxNftId, newOwnerNFT);
 
-        await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
+  });
 
-    it("[negative] unable to accept NFT which is not sent", async () => {
-        const ownerAlice = alice;
-        const ownerBob = bob;
+  it('[negative] unable to accept NFT which is not sent', async () => {
+    const ownerAlice = alice;
+    const ownerBob = bob;
 
-        const aliceCollectionId = await createTestCollection(alice);
-        const bobCollectionId = await createTestCollection(bob);
+    const aliceCollectionId = await createTestCollection(alice);
+    const bobCollectionId = await createTestCollection(bob);
 
-        const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
 
-        const tx = acceptNft(api, alice, bobCollectionId, childNftId, newOwnerNFT);
+    const tx = acceptNft(api, alice, bobCollectionId, childNftId, newOwnerNFT);
 
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
 
-        const isChild = await isNftChildOfAnother(api, bobCollectionId, childNftId, newOwnerNFT);
-        expect(isChild).to.be.false;
-    });
+    const isChild = await isNftChildOfAnother(api, bobCollectionId, childNftId, newOwnerNFT);
+    expect(isChild).to.be.false;
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/addResource.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/addResource.test.ts
+++ b/tests/src/rmrk/addResource.test.ts
@@ -1,7 +1,7 @@
-import { expect } from "chai";
-import { getApiConnection } from "../substrate/substrate-api";
-import { NftIdTuple } from "./util/fetch";
-import { expectTxFailure, getResourceById } from "./util/helpers";
+import {expect} from 'chai';
+import {getApiConnection} from '../substrate/substrate-api';
+import {NftIdTuple} from './util/fetch';
+import {expectTxFailure, getResourceById} from './util/helpers';
 import {
   addNftBasicResource,
   acceptNftResource,
@@ -10,16 +10,16 @@
   sendNft,
   addNftSlotResource,
   addNftComposableResource,
-} from "./util/tx";
-import {RmrkTraitsResourceResourceInfo as ResourceInfo} from "@polkadot/types/lookup";
+} from './util/tx';
+import {RmrkTraitsResourceResourceInfo as ResourceInfo} from '@polkadot/types/lookup';
 
-describe("integration test: add NFT resource", () => {
-  const Alice = "//Alice";
-  const Bob = "//Bob";
-  const src = "test-res-src";
-  const metadata = "test-res-metadata";
-  const license = "test-res-license";
-  const thumb = "test-res-thumb";
+describe('integration test: add NFT resource', () => {
+  const Alice = '//Alice';
+  const Bob = '//Bob';
+  const src = 'test-res-src';
+  const metadata = 'test-res-metadata';
+  const license = 'test-res-license';
+  const thumb = 'test-res-thumb';
 
   const nonexistentId = 99999;
 
@@ -28,13 +28,13 @@
     api = await getApiConnection();
   });
 
-  it("add resource", async () => {
+  it('add resource', async () => {
     const collectionIdAlice = await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const nftAlice = await mintNft(
@@ -42,19 +42,19 @@
       Alice,
       Alice,
       collectionIdAlice,
-      "nft-metadata"
+      'nft-metadata',
     );
 
     await addNftBasicResource(
       api,
       Alice,
-      "added",
+      'added',
       collectionIdAlice,
       nftAlice,
       src,
       metadata,
       license,
-      thumb
+      thumb,
     );
   });
 
@@ -62,28 +62,28 @@
     const collectionIdAlice = await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
-    const parentNftId = await mintNft(api, Alice, Alice, collectionIdAlice, "parent-nft-metadata");
-    const childNftId = await mintNft(api, Alice, Alice, collectionIdAlice, "child-nft-metadata");
+    const parentNftId = await mintNft(api, Alice, Alice, collectionIdAlice, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, Alice, Alice, collectionIdAlice, 'child-nft-metadata');
 
     const newOwnerNFT: NftIdTuple = [collectionIdAlice, parentNftId];
 
-    await sendNft(api, "sent", Alice, collectionIdAlice, childNftId, newOwnerNFT);
+    await sendNft(api, 'sent', Alice, collectionIdAlice, childNftId, newOwnerNFT);
 
     await addNftBasicResource(
       api,
       Alice,
-      "added",
+      'added',
       collectionIdAlice,
       childNftId,
       src,
       metadata,
       license,
-      thumb
+      thumb,
     );
   });
 
@@ -91,9 +91,9 @@
     const collectionIdAlice = await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const nftAlice = await mintNft(
@@ -101,14 +101,14 @@
       Alice,
       Alice,
       collectionIdAlice,
-      "nft-metadata"
+      'nft-metadata',
     );
 
     const baseId = 42;
     const slotId = 10;
     const parts = [0, 5, 2];
 
-    let resourcesInfo = [];
+    const resourcesInfo = [];
     const resourceNum = 4;
 
     const checkResource = async (resource: ResourceInfo, resType: string, expectedId: number, expected: {
@@ -144,38 +144,38 @@
         src: src + 'r-' + i,
         metadata: metadata + 'r-' + i,
         license: license + 'r-' + i,
-        thumb: thumb + 'r-' + i
+        thumb: thumb + 'r-' + i,
       });
     }
 
     const firstBasicResourceId = await addNftBasicResource(
       api,
       Alice,
-      "added",
+      'added',
       collectionIdAlice,
       nftAlice,
       resourcesInfo[0].src,
       resourcesInfo[0].metadata,
       resourcesInfo[0].license,
-      resourcesInfo[0].thumb
+      resourcesInfo[0].thumb,
     );
 
     const secondBasicResourceId = await addNftBasicResource(
       api,
       Alice,
-      "added",
+      'added',
       collectionIdAlice,
       nftAlice,
       resourcesInfo[1].src,
       resourcesInfo[1].metadata,
       resourcesInfo[1].license,
-      resourcesInfo[1].thumb
+      resourcesInfo[1].thumb,
     );
 
     const composableResourceId = await addNftComposableResource(
       api,
       Alice,
-      "added",
+      'added',
       collectionIdAlice,
       nftAlice,
       parts,
@@ -189,7 +189,7 @@
     const slotResourceId = await addNftSlotResource(
       api,
       Alice,
-      "added",
+      'added',
       collectionIdAlice,
       nftAlice,
       baseId,
@@ -197,7 +197,7 @@
       resourcesInfo[3].src,
       resourcesInfo[3].metadata,
       resourcesInfo[3].license,
-      resourcesInfo[3].thumb
+      resourcesInfo[3].thumb,
     );
 
     const firstResource = await getResourceById(api, collectionIdAlice, nftAlice, firstBasicResourceId);
@@ -217,21 +217,21 @@
     const collectionIdAlice = await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const tx = addNftBasicResource(
       api,
       Alice,
-      "added",
+      'added',
       collectionIdAlice,
       nonexistentId,
       src,
       metadata,
       license,
-      thumb
+      thumb,
     );
   
     await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
@@ -241,9 +241,9 @@
     const collectionIdAlice = await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const nftAlice = await mintNft(
@@ -251,19 +251,19 @@
       Alice,
       Alice,
       collectionIdAlice,
-      "nft-metadata"
+      'nft-metadata',
     );
 
     const tx = addNftBasicResource(
       api,
       Bob,
-      "added",
+      'added',
       collectionIdAlice,
       nftAlice,
       src,
       metadata,
       license,
-      thumb
+      thumb,
     );
   
     await expectTxFailure(/rmrkCore\.NoPermission/, tx);
@@ -273,113 +273,113 @@
     const collectionIdAlice = await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
-    const parentNftId = await mintNft(api, Alice, Alice, collectionIdAlice, "parent-nft-metadata");
-    const childNftId = await mintNft(api, Alice, Alice, collectionIdAlice, "child-nft-metadata");
+    const parentNftId = await mintNft(api, Alice, Alice, collectionIdAlice, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, Alice, Alice, collectionIdAlice, 'child-nft-metadata');
 
     const newOwnerNFT: NftIdTuple = [collectionIdAlice, parentNftId];
 
-    await sendNft(api, "sent", Alice, collectionIdAlice, childNftId, newOwnerNFT);
+    await sendNft(api, 'sent', Alice, collectionIdAlice, childNftId, newOwnerNFT);
 
     const tx = addNftBasicResource(
       api,
       Bob,
-      "added",
+      'added',
       collectionIdAlice,
       childNftId,
       src,
       metadata,
       license,
-      thumb
+      thumb,
     );
     
     await expectTxFailure(/rmrkCore\.NoPermission/, tx);
   });
 
-  it("accept resource", async () => {
+  it('accept resource', async () => {
     const collectionIdBob = await createCollection(
       api,
       Bob,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const nftAlice = await mintNft(
-        api,
-        Bob,
-        Alice,
-        collectionIdBob,
-        "nft-metadata"
+      api,
+      Bob,
+      Alice,
+      collectionIdBob,
+      'nft-metadata',
     );
 
     const resourceId = await addNftBasicResource(
       api,
       Bob,
-      "pending",
+      'pending',
       collectionIdBob,
       nftAlice,
       src,
       metadata,
       license,
-      thumb
+      thumb,
     );
 
     await acceptNftResource(api, Alice, collectionIdBob, nftAlice, resourceId);
   });
 
-  it("[negative]: unable to accept a non-existing resource", async () => {
+  it('[negative]: unable to accept a non-existing resource', async () => {
     const collectionIdBob = await createCollection(
       api,
       Bob,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const nftAlice = await mintNft(
-        api,
-        Bob,
-        Alice,
-        collectionIdBob,
-        "nft-metadata"
+      api,
+      Bob,
+      Alice,
+      collectionIdBob,
+      'nft-metadata',
     );
 
     const tx = acceptNftResource(api, Alice, collectionIdBob, nftAlice, nonexistentId);
     await expectTxFailure(/rmrkCore\.ResourceDoesntExist/, tx);
   });
 
-  it("[negative]: unable to accept a resource by a not-an-NFT-owner user", async () => {
+  it('[negative]: unable to accept a resource by a not-an-NFT-owner user', async () => {
     const collectionIdBob = await createCollection(
       api,
       Bob,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const nftAlice = await mintNft(
-        api,
-        Bob,
-        Alice,
-        collectionIdBob,
-        "nft-metadata"
+      api,
+      Bob,
+      Alice,
+      collectionIdBob,
+      'nft-metadata',
     );
 
     const resourceId = await addNftBasicResource(
       api,
       Bob,
-      "pending",
+      'pending',
       collectionIdBob,
       nftAlice,
       src,
       metadata,
       license,
-      thumb
+      thumb,
     );
 
     const tx = acceptNftResource(api, Bob, collectionIdBob, nftAlice, resourceId);
@@ -387,41 +387,41 @@
     await expectTxFailure(/rmrkCore\.NoPermission/, tx);
   });
 
-  it("[negative]: unable to accept a resource to a non-target NFT", async () => {
+  it('[negative]: unable to accept a resource to a non-target NFT', async () => {
     const collectionIdBob = await createCollection(
       api,
       Bob,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const nftAlice = await mintNft(
-        api,
-        Bob,
-        Alice,
-        collectionIdBob,
-        "nft-metadata"
+      api,
+      Bob,
+      Alice,
+      collectionIdBob,
+      'nft-metadata',
     );
 
     const wrongNft = await mintNft(
-        api,
-        Bob,
-        Alice,
-        collectionIdBob,
-        "nft-metadata"
+      api,
+      Bob,
+      Alice,
+      collectionIdBob,
+      'nft-metadata',
     );
     
     const resourceId = await addNftBasicResource(
       api,
       Bob,
-      "pending",
+      'pending',
       collectionIdBob,
       nftAlice,
       src,
       metadata,
       license,
-      thumb
+      thumb,
     );
 
     const tx = acceptNftResource(api, Bob, collectionIdBob, wrongNft, resourceId);
modifiedtests/src/rmrk/addTheme.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/addTheme.test.ts
+++ b/tests/src/rmrk/addTheme.test.ts
@@ -1,128 +1,126 @@
-import { expect } from 'chai';
-import { getApiConnection } from '../substrate/substrate-api';
-import { createBase, addTheme } from "./util/tx";
-import { expectTxFailure } from './util/helpers';
-import { getThemeNames } from './util/fetch';
+import {expect} from 'chai';
+import {getApiConnection} from '../substrate/substrate-api';
+import {createBase, addTheme} from './util/tx';
+import {expectTxFailure} from './util/helpers';
+import {getThemeNames} from './util/fetch';
 
-describe("integration test: add Theme to Base", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: add Theme to Base', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = "//Alice";
-    const bob = "//Bob";
+  const alice = '//Alice';
+  const bob = '//Bob';
 
-    it("add default theme", async () => {
-        const baseId = await createBase(api, alice, "default-themed-base", "DTBase", []);
-        await addTheme(api, alice, baseId, {
-            name: "default",
-            properties: [
-                {
-                    key: "some-key",
-                    value: "some-key-value"
-                },
-                {
-                    key: "another-key",
-                    value: "another-key-value"
-                }
-            ]
-        });
+  it('add default theme', async () => {
+    const baseId = await createBase(api, alice, 'default-themed-base', 'DTBase', []);
+    await addTheme(api, alice, baseId, {
+      name: 'default',
+      properties: [
+        {
+          key: 'some-key',
+          value: 'some-key-value',
+        },
+        {
+          key: 'another-key',
+          value: 'another-key-value',
+        },
+      ],
     });
+  });
 
-    it("add default theme and a custom one", async () => {
-        const baseId = await createBase(api, alice, "2-themed-base", "2TBase", []);
-        await addTheme(api, alice, baseId, {
-            name: "default",
-            properties: [
-                {
-                    key: "default-key",
-                    value: "default-key-value"
-                }
-            ]
-        });
-        await addTheme(api, alice, baseId, {
-            name: "custom-theme",
-            properties: [
-                {
-                    key: "custom-key-0",
-                    value: "custom-key-value-0"
-                },
-                {
-                    key: "custom-key-1",
-                    value: "custom-key-value-1"
-                }
-            ]
-        })
+  it('add default theme and a custom one', async () => {
+    const baseId = await createBase(api, alice, '2-themed-base', '2TBase', []);
+    await addTheme(api, alice, baseId, {
+      name: 'default',
+      properties: [
+        {
+          key: 'default-key',
+          value: 'default-key-value',
+        },
+      ],
     });
-
-    it("fetch filtered theme keys", async () => {
-        const baseId = await createBase(api, alice, "2-themed-base", "2TBase", []);
-        await addTheme(api, alice, baseId, {
-            name: "default",
-            properties: [
-                {
-                    key: "first-key",
-                    value: "first-key-value"
-                },
-                {
-                    key: "second-key",
-                    value: "second-key-value"
-                }
-            ]
-        }, ["second-key"]);
+    await addTheme(api, alice, baseId, {
+      name: 'custom-theme',
+      properties: [
+        {
+          key: 'custom-key-0',
+          value: 'custom-key-value-0',
+        },
+        {
+          key: 'custom-key-1',
+          value: 'custom-key-value-1',
+        },
+      ],
     });
+  });
 
-    it("fetch theme names", async() => {
-        const baseId = await createBase(api, alice, "3-themed-base", "3TBase", []);
-        const names = [
-            "default",
-            "first-theme",
-            "second-theme"
-        ];
+  it('fetch filtered theme keys', async () => {
+    const baseId = await createBase(api, alice, '2-themed-base', '2TBase', []);
+    await addTheme(api, alice, baseId, {
+      name: 'default',
+      properties: [
+        {
+          key: 'first-key',
+          value: 'first-key-value',
+        },
+        {
+          key: 'second-key',
+          value: 'second-key-value',
+        },
+      ],
+    }, ['second-key']);
+  });
 
-        for (var i = 0; i < names.length; i++) {
-            await addTheme(api, alice, baseId, { name: names[i], properties: [{ key: 'dummy', value: 'dummy' }] });
-        }
+  it('fetch theme names', async() => {
+    const baseId = await createBase(api, alice, '3-themed-base', '3TBase', []);
+    const names = [
+      'default',
+      'first-theme',
+      'second-theme',
+    ];
 
-        const fetchedNames = await getThemeNames(api, baseId);
+    for (var i = 0; i < names.length; i++) {
+      await addTheme(api, alice, baseId, {name: names[i], properties: [{key: 'dummy', value: 'dummy'}]});
+    }
 
-        for (var i = 0; i < names.length; i++) {
-            const isFound = fetchedNames.find(
-                (name) => name === names[i]
-            ) !== undefined;
+    const fetchedNames = await getThemeNames(api, baseId);
 
-            expect(isFound, "Error: invalid theme names").to.be.true;
-        }
-    });
+    for (var i = 0; i < names.length; i++) {
+      const isFound = fetchedNames.find((name) => name === names[i]) !== undefined;
 
-    it("[negative] unable to add theme to non-existing base", async () => {
-        const maxBaseId = 0xFFFFFFFF;
-        const tx = addTheme(api, alice, maxBaseId, {
-            name: "default",
-            properties: []
-        });
+      expect(isFound, 'Error: invalid theme names').to.be.true;
+    }
+  });
 
-        await expectTxFailure(/rmrkEquip\.BaseDoesntExist/, tx);
+  it('[negative] unable to add theme to non-existing base', async () => {
+    const maxBaseId = 0xFFFFFFFF;
+    const tx = addTheme(api, alice, maxBaseId, {
+      name: 'default',
+      properties: [],
     });
 
-    it("[negative] unable to add custom theme if no default theme", async () => {
-        const baseId = await createBase(api, alice, "no-default-themed-base", "NDTBase", []);
-        const tx = addTheme(api, alice, baseId, {
-            name: "custom-theme",
-            properties: []
-        });
+    await expectTxFailure(/rmrkEquip\.BaseDoesntExist/, tx);
+  });
 
-        await expectTxFailure(/rmrkEquip\.NeedsDefaultThemeFirst/, tx);
+  it('[negative] unable to add custom theme if no default theme', async () => {
+    const baseId = await createBase(api, alice, 'no-default-themed-base', 'NDTBase', []);
+    const tx = addTheme(api, alice, baseId, {
+      name: 'custom-theme',
+      properties: [],
     });
 
-    it("[negative] unable to add theme by a not-an-owner", async () => {
-        const baseId = await createBase(api, alice, "no-default-themed-base", "NDTBase", []);
-        const tx = addTheme(api, bob, baseId, {
-            name: "default",
-            properties: []
-        });
+    await expectTxFailure(/rmrkEquip\.NeedsDefaultThemeFirst/, tx);
+  });
 
-        await expectTxFailure(/rmrkEquip\.PermissionError/, tx);
+  it('[negative] unable to add theme by a not-an-owner', async () => {
+    const baseId = await createBase(api, alice, 'no-default-themed-base', 'NDTBase', []);
+    const tx = addTheme(api, bob, baseId, {
+      name: 'default',
+      properties: [],
     });
 
-    after(() => { api.disconnect(); });
+    await expectTxFailure(/rmrkEquip\.PermissionError/, tx);
+  });
+
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/burnNft.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/burnNft.test.ts
+++ b/tests/src/rmrk/burnNft.test.ts
@@ -1,7 +1,7 @@
-import { getApiConnection } from "../substrate/substrate-api";
-import { expectTxFailure } from "./util/helpers";
-import { NftIdTuple, getChildren } from './util/fetch';
-import { burnNft, createCollection, sendNft, mintNft } from "./util/tx";
+import {getApiConnection} from '../substrate/substrate-api';
+import {expectTxFailure} from './util/helpers';
+import {NftIdTuple, getChildren} from './util/fetch';
+import {burnNft, createCollection, sendNft, mintNft} from './util/tx';
 
 import chai from 'chai';
 import chaiAsPromised from 'chai-as-promised';
@@ -9,41 +9,41 @@
 chai.use(chaiAsPromised);
 const expect = chai.expect;
 
-describe("integration test: burn nft", () => {
-  const Alice = "//Alice";
-  const Bob = "//Bob";
+describe('integration test: burn nft', () => {
+  const Alice = '//Alice';
+  const Bob = '//Bob';
 
   let api: any;
   before(async () => {
     api = await getApiConnection();
   });
 
-  it("burn nft", async () => {
+  it('burn nft', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       const nftId = await mintNft(
         api,
         Alice,
         Alice,
         collectionId,
-        "nft-metadata"
+        'nft-metadata',
       );
       await burnNft(api, Alice, collectionId, nftId);
     });
   });
 
-  it("burn nft with children", async () => {
+  it('burn nft with children', async () => {
     const collectionId = await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const parentNftId = await mintNft(
@@ -51,7 +51,7 @@
       Alice,
       Alice,
       collectionId,
-      "nft-metadata"
+      'nft-metadata',
     );
 
     const childNftId = await mintNft(
@@ -59,18 +59,18 @@
       Alice,
       Alice,
       collectionId,
-      "nft-metadata"
+      'nft-metadata',
     );
 
     const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
 
-    await sendNft(api, "sent", Alice, collectionId, childNftId, newOwnerNFT);
+    await sendNft(api, 'sent', Alice, collectionId, childNftId, newOwnerNFT);
 
     const childrenBefore = await getChildren(api, collectionId, parentNftId);
     expect(childrenBefore.length === 1, 'Error: parent NFT should have children')
       .to.be.true;
 
-    let child = childrenBefore[0];
+    const child = childrenBefore[0];
     expect(child.collectionId.eq(collectionId), 'Error: invalid child collection Id')
       .to.be.true;
 
@@ -84,13 +84,13 @@
     expect(childrenAfter.length === 0, 'Error: children should be burned').to.be.true;
   });
 
-  it("burn child nft", async () => {
+  it('burn child nft', async () => {
     const collectionId = await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     );
 
     const parentNftId = await mintNft(
@@ -98,7 +98,7 @@
       Alice,
       Alice,
       collectionId,
-      "nft-metadata"
+      'nft-metadata',
     );
 
     const childNftId = await mintNft(
@@ -106,18 +106,18 @@
       Alice,
       Alice,
       collectionId,
-      "nft-metadata"
+      'nft-metadata',
     );
 
     const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
 
-    await sendNft(api, "sent", Alice, collectionId, childNftId, newOwnerNFT);
+    await sendNft(api, 'sent', Alice, collectionId, childNftId, newOwnerNFT);
 
     const childrenBefore = await getChildren(api, collectionId, parentNftId);
     expect(childrenBefore.length === 1, 'Error: parent NFT should have children')
       .to.be.true;
 
-    let child = childrenBefore[0];
+    const child = childrenBefore[0];
     expect(child.collectionId.eq(collectionId), 'Error: invalid child collection Id')
       .to.be.true;
 
@@ -131,33 +131,33 @@
     expect(childrenAfter.length === 0, 'Error: children should be burned').to.be.true;
   });
 
-  it("[negative] burn non-existing NFT", async () => {
+  it('[negative] burn non-existing NFT', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       const tx = burnNft(api, Alice, collectionId, 99999);
       await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
     });
   });
 
-  it("[negative] burn not an owner NFT user", async () => {
+  it('[negative] burn not an owner NFT user', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       const nftId = await mintNft(
         api,
         Alice,
         Alice,
         collectionId,
-        "nft-metadata"
+        'nft-metadata',
       );
       const tx = burnNft(api, Bob, collectionId, nftId);
       await expectTxFailure(/rmrkCore\.NoPermission/, tx);
modifiedtests/src/rmrk/changeCollectionIssuer.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/changeCollectionIssuer.test.ts
+++ b/tests/src/rmrk/changeCollectionIssuer.test.ts
@@ -1,47 +1,45 @@
-import { getApiConnection } from "../substrate/substrate-api";
-import { expectTxFailure } from "./util/helpers";
+import {getApiConnection} from '../substrate/substrate-api';
+import {expectTxFailure} from './util/helpers';
 import {
   changeIssuer,
   createCollection,
-} from "./util/tx";
+} from './util/tx';
 
-describe("integration test: collection issuer", () => {
-  const Alice = "//Alice";
-  const Bob = "//Bob";
+describe('integration test: collection issuer', () => {
+  const Alice = '//Alice';
+  const Bob = '//Bob';
 
   let api: any;
   before(async () => {
     api = await getApiConnection();
   });
 
-  it("change collection issuer", async () => {
+  it('change collection issuer', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       await changeIssuer(api, Alice, collectionId, Bob);
     });
   });
 
-  it("[negative] change not an owner NFT collection issuer", async () => {
-    await createCollection(api, Bob, "test-metadata", null, "test-symbol").then(
-      async (collectionId) => {
-        const tx = changeIssuer(api, Alice, collectionId, Bob);
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-      }
-    );
+  it('[negative] change not an owner NFT collection issuer', async () => {
+    await createCollection(api, Bob, 'test-metadata', null, 'test-symbol').then(async (collectionId) => {
+      const tx = changeIssuer(api, Alice, collectionId, Bob);
+      await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+    });
   });
 
-  it("[negative] change non-existigit NFT collection issuer", async () => {
+  it('[negative] change non-existigit NFT collection issuer', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async () => {
       const tx = changeIssuer(api, Alice, 99999, Bob);
       await expectTxFailure(/rmrkCore\.CollectionUnknown/, tx);
modifiedtests/src/rmrk/createBase.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/createBase.test.ts
+++ b/tests/src/rmrk/createBase.test.ts
@@ -1,84 +1,84 @@
-import { getApiConnection } from '../substrate/substrate-api';
-import { createCollection, createBase } from "./util/tx";
+import {getApiConnection} from '../substrate/substrate-api';
+import {createCollection, createBase} from './util/tx';
 
-describe("integration test: create new Base", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: create new Base', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = '//Alice';
+  const alice = '//Alice';
 
-    it("create empty Base", async () => {
-        await createBase(api, alice, 'empty-base-type', 'EBase', []);
-    });
+  it('create empty Base', async () => {
+    await createBase(api, alice, 'empty-base-type', 'EBase', []);
+  });
 
-    it("create Base with fixed part", async () => {
-        await createBase(api, alice, 'fixedpart-base-type', 'FPBase', [
-            {
-                "FixedPart": {
-                    id: 42,
-                    z: 0,
-                    src: "some-fixed-url"
-                }
-            }
-        ]);
-    });
+  it('create Base with fixed part', async () => {
+    await createBase(api, alice, 'fixedpart-base-type', 'FPBase', [
+      {
+        'FixedPart': {
+          id: 42,
+          z: 0,
+          src: 'some-fixed-url',
+        },
+      },
+    ]);
+  });
 
-    it("create Base with slot part (no collection)", async () => {
-        await createBase(api, alice, 'slotpart-base-type', 'SPBase', [
-            {
-                "SlotPart": {
-                    id: 112,
-                    equippable: "Empty",
-                    z: 0,
-                    src: "some-fallback-slot-url"
-                }
-            }
-        ]);
-    });
+  it('create Base with slot part (no collection)', async () => {
+    await createBase(api, alice, 'slotpart-base-type', 'SPBase', [
+      {
+        'SlotPart': {
+          id: 112,
+          equippable: 'Empty',
+          z: 0,
+          src: 'some-fallback-slot-url',
+        },
+      },
+    ]);
+  });
 
-    it("create Base with slot part (any collection)", async () => {
-        await createBase(api, alice, 'slotpartany-base-type', 'SPABase', [
-            {
-                "SlotPart": {
-                    id: 222,
-                    equippable: "All",
-                    z: 1,
-                    src: "some-fallback-slot-url"
-                }
-            }
-        ]);
-    });
+  it('create Base with slot part (any collection)', async () => {
+    await createBase(api, alice, 'slotpartany-base-type', 'SPABase', [
+      {
+        'SlotPart': {
+          id: 222,
+          equippable: 'All',
+          z: 1,
+          src: 'some-fallback-slot-url',
+        },
+      },
+    ]);
+  });
 
-    it("create Base with slot part (custom collections)", async () => {
-        const firstCollectionId = await createCollection(
-            api,
-            alice,
-            "first-collection-meta",
-            null,
-            "first-collection"
-        );
+  it('create Base with slot part (custom collections)', async () => {
+    const firstCollectionId = await createCollection(
+      api,
+      alice,
+      'first-collection-meta',
+      null,
+      'first-collection',
+    );
 
-        const secondCollectionId = await createCollection(
-            api,
-            alice,
-            "first-collection-meta",
-            null,
-            "first-collection"
-        );
+    const secondCollectionId = await createCollection(
+      api,
+      alice,
+      'first-collection-meta',
+      null,
+      'first-collection',
+    );
 
-        await createBase(api, alice, "slotpartcustom-base-type", "SPCBase", [
-            {
-                "SlotPart": {
-                    id: 1024,
-                    equippable: {
-                        "Custom": [firstCollectionId, secondCollectionId]
-                    },
-                    z: 2,
-                    src: "some-fallback-slot-url"
-                }
-            }
-        ]);
-    });
+    await createBase(api, alice, 'slotpartcustom-base-type', 'SPCBase', [
+      {
+        'SlotPart': {
+          id: 1024,
+          equippable: {
+            'Custom': [firstCollectionId, secondCollectionId],
+          },
+          z: 2,
+          src: 'some-fallback-slot-url',
+        },
+      },
+    ]);
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/createCollection.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/createCollection.test.ts
+++ b/tests/src/rmrk/createCollection.test.ts
@@ -1,19 +1,19 @@
-import { getApiConnection } from '../substrate/substrate-api';
-import { createCollection } from './util/tx';
+import {getApiConnection} from '../substrate/substrate-api';
+import {createCollection} from './util/tx';
 
 describe('Integration test: create new collection', () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = '//Alice';
+  const alice = '//Alice';
 
-    it('create NFT collection', async () => {
-        await createCollection(api, alice, 'test-metadata', 42, 'test-symbol');
-    });
+  it('create NFT collection', async () => {
+    await createCollection(api, alice, 'test-metadata', 42, 'test-symbol');
+  });
 
-    it('create NFT collection without token limit', async () => {
-        await createCollection(api, alice, 'no-limit-metadata', null, 'no-limit-symbol');
-    });
+  it('create NFT collection without token limit', async () => {
+    await createCollection(api, alice, 'no-limit-metadata', null, 'no-limit-symbol');
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/deleteCollection.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/deleteCollection.test.ts
+++ b/tests/src/rmrk/deleteCollection.test.ts
@@ -1,40 +1,40 @@
-import { getApiConnection } from "../substrate/substrate-api";
-import { expectTxFailure } from "./util/helpers";
-import { createCollection, deleteCollection } from "./util/tx";
+import {getApiConnection} from '../substrate/substrate-api';
+import {expectTxFailure} from './util/helpers';
+import {createCollection, deleteCollection} from './util/tx';
 
-describe("integration test: delete collection", () => {
+describe('integration test: delete collection', () => {
   let api: any;
   before(async () => {
     api = await getApiConnection();
   });
 
-  const Alice = "//Alice";
-  const Bob = "//Bob";
+  const Alice = '//Alice';
+  const Bob = '//Bob';
 
-  it("delete NFT collection", async () => {
+  it('delete NFT collection', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       await deleteCollection(api, Alice, collectionId.toString());
     });
   });
 
-  it("[negative] delete non-existing NFT collection", async () => {
-    const tx = deleteCollection(api, Alice, "99999");
+  it('[negative] delete non-existing NFT collection', async () => {
+    const tx = deleteCollection(api, Alice, '99999');
     await expectTxFailure(/rmrkCore\.CollectionUnknown/, tx);
   });
 
-  it("[negative] delete not an owner NFT collection", async () => {
+  it('[negative] delete not an owner NFT collection', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       const tx = deleteCollection(api, Bob, collectionId.toString());
       await expectTxFailure(/uniques.NoPermission/, tx);
modifiedtests/src/rmrk/equipNft.test.tsdiffbeforeafterboth
1import { ApiPromise } from "@polkadot/api";1import {ApiPromise} from '@polkadot/api';
2import { expect } from "chai";2import {expect} from 'chai';
3import { getApiConnection } from "../substrate/substrate-api";3import {getApiConnection} from '../substrate/substrate-api';
4import { getNft, getParts, NftIdTuple } from "./util/fetch";4import {getNft, getParts, NftIdTuple} from './util/fetch';
5import { expectTxFailure } from "./util/helpers";5import {expectTxFailure} from './util/helpers';
6import {6import {
7 addNftComposableResource,7 addNftComposableResource,
8 addNftSlotResource,8 addNftSlotResource,
11 equipNft,11 equipNft,
12 mintNft,12 mintNft,
13 sendNft,13 sendNft,
14 unequipNft14 unequipNft,
15} from "./util/tx";15} from './util/tx';
1616
17const Alice = "//Alice";17const Alice = '//Alice';
18const Bob = "//Bob";18const Bob = '//Bob';
1919
20const composableParts: number[] = [5, 2, 7];20const composableParts: number[] = [5, 2, 7];
21const composableSrc = 'test-cmp-src';21const composableSrc = 'test-cmp-src';
34 return createCollection(34 return createCollection(
35 api,35 api,
36 Alice,36 Alice,
37 "test-metadata",37 'test-metadata',
38 null,38 null,
39 "test-symbol"39 'test-symbol',
40 );40 );
41}41}
4242
46 Alice,46 Alice,
47 Alice,47 Alice,
48 collectionId,48 collectionId,
49 "nft-metadata"49 'nft-metadata',
50 );50 );
51}51}
5252
5555
56 const parentNFT: NftIdTuple = [collectionId, parentNftId];56 const parentNFT: NftIdTuple = [collectionId, parentNftId];
5757
58 await sendNft(api, "sent", Alice, collectionId, nftChildId, parentNFT);58 await sendNft(api, 'sent', Alice, collectionId, nftChildId, parentNFT);
5959
60 return nftChildId;60 return nftChildId;
61}61}
6262
63async function createTestBase(api: ApiPromise): Promise<number> {63async function createTestBase(api: ApiPromise): Promise<number> {
64 return createBase(api, Alice, "test-base", "DTBase", [64 return createBase(api, Alice, 'test-base', 'DTBase', [
65 {65 {
66 SlotPart: {66 SlotPart: {
67 id: slotId,67 id: slotId,
68 equippable: "All",68 equippable: 'All',
69 z: 1,69 z: 1,
70 src: slotSrc,70 src: slotSrc,
71 },71 },
77 await addNftComposableResource(77 await addNftComposableResource(
78 api,78 api,
79 Alice,79 Alice,
80 "added",80 'added',
81 collectionId,81 collectionId,
82 nftId,82 nftId,
83 composableParts,83 composableParts,
84 baseId,84 baseId,
85 composableSrc,85 composableSrc,
86 composableMetadata,86 composableMetadata,
87 composableLicense,87 composableLicense,
88 composableThumb88 composableThumb,
89 );89 );
90}90}
9191
92async function addTestSlot(api: ApiPromise, collectionId: number, nftId: number, baseId: number, slotId: number): Promise<number> {92async function addTestSlot(api: ApiPromise, collectionId: number, nftId: number, baseId: number, slotId: number): Promise<number> {
93 return await addNftSlotResource(93 return await addNftSlotResource(
94 api,94 api,
95 Alice,95 Alice,
96 "added",96 'added',
97 collectionId,97 collectionId,
98 nftId,98 nftId,
99 baseId,99 baseId,
100 slotId,100 slotId,
101 slotSrc,101 slotSrc,
102 slotMetadata,102 slotMetadata,
103 slotLicense,103 slotLicense,
104 slotThumb104 slotThumb,
105 );105 );
106}106}
107107
108async function checkEquipStatus(108async function checkEquipStatus(
109 api: ApiPromise,109 api: ApiPromise,
110 expectedStatus: "equipped" | "unequipped",110 expectedStatus: 'equipped' | 'unequipped',
111 collectionId: number,111 collectionId: number,
112 nftId: number112 nftId: number,
113) {113) {
114 const itemNftDataOpt = await getNft(api, collectionId, nftId);114 const itemNftDataOpt = await getNft(api, collectionId, nftId);
115 expect(itemNftDataOpt.isSome, 'Error: unable to fetch item NFT data');115 expect(itemNftDataOpt.isSome, 'Error: unable to fetch item NFT data');
116116
117 const itemNftData = itemNftDataOpt.unwrap();117 const itemNftData = itemNftDataOpt.unwrap();
118 expect(itemNftData.equipped.isTrue, `Error: item NFT should be ${expectedStatus}`)118 expect(itemNftData.equipped.isTrue, `Error: item NFT should be ${expectedStatus}`)
119 .to.be.equal(expectedStatus === "equipped");119 .to.be.equal(expectedStatus === 'equipped');
120}120}
121121
122describe("integration test: Equip NFT", () => {122describe('integration test: Equip NFT', () => {
123123
124 let api: any;124 let api: any;
125 before(async () => {125 before(async () => {
126 api = await getApiConnection();126 api = await getApiConnection();
127 });127 });
128128
129 it("equip nft", async () => {129 it('equip nft', async () => {
130 const collectionId = await createTestCollection(api);130 const collectionId = await createTestCollection(api);
131 const nftParentId = await mintTestNft(api, collectionId);131 const nftParentId = await mintTestNft(api, collectionId);
132 const nftChildId = await mintChildNft(api, collectionId, nftParentId);132 const nftChildId = await mintChildNft(api, collectionId, nftParentId);
141141
142 await equipNft(api, Alice, itemNFT, equipperNFT, resourceId, baseId, slotId);142 await equipNft(api, Alice, itemNFT, equipperNFT, resourceId, baseId, slotId);
143143
144 await checkEquipStatus(api, "equipped", collectionId, nftChildId);144 await checkEquipStatus(api, 'equipped', collectionId, nftChildId);
145 });145 });
146146
147 it("unequip nft", async () => {147 it('unequip nft', async () => {
148 const collectionId = await createTestCollection(api);148 const collectionId = await createTestCollection(api);
149 const nftParentId = await mintTestNft(api, collectionId);149 const nftParentId = await mintTestNft(api, collectionId);
150 const nftChildId = await mintChildNft(api, collectionId, nftParentId);150 const nftChildId = await mintChildNft(api, collectionId, nftParentId);
159159
160 await equipNft(api, Alice, itemNFT, equipperNFT, resourceId, baseId, slotId);160 await equipNft(api, Alice, itemNFT, equipperNFT, resourceId, baseId, slotId);
161161
162 await checkEquipStatus(api, "equipped", collectionId, nftChildId);162 await checkEquipStatus(api, 'equipped', collectionId, nftChildId);
163163
164 await unequipNft(api, Alice, itemNFT, equipperNFT, resourceId, baseId, slotId);164 await unequipNft(api, Alice, itemNFT, equipperNFT, resourceId, baseId, slotId);
165 await checkEquipStatus(api, "unequipped", collectionId, nftChildId);165 await checkEquipStatus(api, 'unequipped', collectionId, nftChildId);
166 });166 });
167167
168 it("[negative] equip NFT onto non-existing NFT", async () => {168 it('[negative] equip NFT onto non-existing NFT', async () => {
169 const collectionId = await createTestCollection(api);169 const collectionId = await createTestCollection(api);
170170
171 const nftChildId = await mintNft(171 const nftChildId = await mintNft(
172 api,172 api,
173 Alice,173 Alice,
174 Alice,174 Alice,
175 collectionId,175 collectionId,
176 "nft-metadata"176 'nft-metadata',
177 );177 );
178178
179 const itemNFT: NftIdTuple = [collectionId, nftChildId];179 const itemNFT: NftIdTuple = [collectionId, nftChildId];
186 await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);186 await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
187 });187 });
188188
189 it("[negative] equip non-existing NFT", async () => {189 it('[negative] equip non-existing NFT', async () => {
190 const collectionId = await createTestCollection(api);190 const collectionId = await createTestCollection(api);
191 const nftParentId = await mintNft(191 const nftParentId = await mintNft(
192 api,192 api,
193 Alice,193 Alice,
194 Alice,194 Alice,
195 collectionId,195 collectionId,
196 "nft-metadata"196 'nft-metadata',
197 );197 );
198198
199 const baseId = await createTestBase(api);199 const baseId = await createTestBase(api);
209 await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);209 await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
210 });210 });
211211
212 it("[negative] equip NFT by a not-an-owner user", async () => {212 it('[negative] equip NFT by a not-an-owner user', async () => {
213 const collectionId = await createTestCollection(api);213 const collectionId = await createTestCollection(api);
214 const nftParentId = await mintTestNft(api, collectionId);214 const nftParentId = await mintTestNft(api, collectionId);
215 const nftChildId = await mintChildNft(api, collectionId, nftParentId);215 const nftChildId = await mintChildNft(api, collectionId, nftParentId);
227 await expectTxFailure(/rmrkEquip\.PermissionError/, tx);227 await expectTxFailure(/rmrkEquip\.PermissionError/, tx);
228 });228 });
229229
230 it("[negative] unable to equip NFT onto indirect parent NFT", async () => {230 it('[negative] unable to equip NFT onto indirect parent NFT', async () => {
231 const collectionId = await createTestCollection(api);231 const collectionId = await createTestCollection(api);
232 const nftParentId = await mintTestNft(api, collectionId);232 const nftParentId = await mintTestNft(api, collectionId);
233 const nftChildId = await mintChildNft(api, collectionId, nftParentId);233 const nftChildId = await mintChildNft(api, collectionId, nftParentId);
245 await expectTxFailure(/rmrkEquip\.MustBeDirectParent/, tx);245 await expectTxFailure(/rmrkEquip\.MustBeDirectParent/, tx);
246 });246 });
247247
248 it("[negative] unable to equip NFT onto parent NFT with another base", async () => {248 it('[negative] unable to equip NFT onto parent NFT with another base', async () => {
249 const collectionId = await createTestCollection(api);249 const collectionId = await createTestCollection(api);
250 const nftParentId = await mintTestNft(api, collectionId);250 const nftParentId = await mintTestNft(api, collectionId);
251 const nftChildId = await mintChildNft(api, collectionId, nftParentId);251 const nftChildId = await mintChildNft(api, collectionId, nftParentId);
264 await expectTxFailure(/rmrkEquip\.NoResourceForThisBaseFoundOnNft/, tx);264 await expectTxFailure(/rmrkEquip\.NoResourceForThisBaseFoundOnNft/, tx);
265 });265 });
266266
267 it("[negative] unable to equip NFT into slot with another id", async () => {267 it('[negative] unable to equip NFT into slot with another id', async () => {
268 const collectionId = await createTestCollection(api);268 const collectionId = await createTestCollection(api);
269 const nftParentId = await mintTestNft(api, collectionId);269 const nftParentId = await mintTestNft(api, collectionId);
270 const nftChildId = await mintChildNft(api, collectionId, nftParentId);270 const nftChildId = await mintChildNft(api, collectionId, nftParentId);
282 await expectTxFailure(/rmrkEquip\.ItemHasNoResourceToEquipThere/, tx);282 await expectTxFailure(/rmrkEquip\.ItemHasNoResourceToEquipThere/, tx);
283 });283 });
284284
285 it("[negative] unable to equip NFT with incorrect slot (fixed part)", async () => {285 it('[negative] unable to equip NFT with incorrect slot (fixed part)', async () => {
286 const collectionId = await createTestCollection(api);286 const collectionId = await createTestCollection(api);
287 const nftParentId = await mintTestNft(api, collectionId);287 const nftParentId = await mintTestNft(api, collectionId);
288 const nftChildId = await mintChildNft(api, collectionId, nftParentId);288 const nftChildId = await mintChildNft(api, collectionId, nftParentId);
289289
290 const baseId = await createBase(api, Alice, "test-base", "DTBase", [290 const baseId = await createBase(api, Alice, 'test-base', 'DTBase', [
291 {291 {
292 FixedPart: {292 FixedPart: {
293 id: slotId,293 id: slotId,
294 equippable: "All",294 equippable: 'All',
295 z: 1,295 z: 1,
296 src: slotSrc,296 src: slotSrc,
297 },297 },
308 await expectTxFailure(/rmrkEquip\.CantEquipFixedPart/, tx);308 await expectTxFailure(/rmrkEquip\.CantEquipFixedPart/, tx);
309 });309 });
310310
311 it("[negative] unable to equip NFT from a collection that is not allowed by the slot", async () => {311 it('[negative] unable to equip NFT from a collection that is not allowed by the slot', async () => {
312 const collectionId = await createTestCollection(api);312 const collectionId = await createTestCollection(api);
313 const nftParentId = await mintTestNft(api, collectionId);313 const nftParentId = await mintTestNft(api, collectionId);
314 const nftChildId = await mintChildNft(api, collectionId, nftParentId);314 const nftChildId = await mintChildNft(api, collectionId, nftParentId);
315315
316 const baseId = await createBase(api, Alice, "test-base", "DTBase", [316 const baseId = await createBase(api, Alice, 'test-base', 'DTBase', [
317 {317 {
318 SlotPart: {318 SlotPart: {
319 id: 1,319 id: 1,
320 z: 1,320 z: 1,
321 equippable: "Empty",321 equippable: 'Empty',
322 src: slotSrc,322 src: slotSrc,
323 },323 },
324 },324 },
modifiedtests/src/rmrk/getOwnedNfts.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/getOwnedNfts.test.ts
+++ b/tests/src/rmrk/getOwnedNfts.test.ts
@@ -1,74 +1,74 @@
-import { expect } from 'chai';
-import { getApiConnection } from '../substrate/substrate-api';
-import { getOwnedNfts } from './util/fetch';
-import { mintNft, createCollection } from './util/tx';
+import {expect} from 'chai';
+import {getApiConnection} from '../substrate/substrate-api';
+import {getOwnedNfts} from './util/fetch';
+import {mintNft, createCollection} from './util/tx';
 
-describe("integration test: get owned NFTs", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: get owned NFTs', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = '//Alice';
+  const alice = '//Alice';
 
-    it("fetch all NFTs owned by a user", async () => {
-        const owner = alice;
-        const collectionMetadata = 'aliceCollectionMetadata';
-        const collectionMax = null;
-        const collectionSymbol = 'AliceSym';
-        const recipientUri = null;
-        const royalty = null;
-        const nftMetadata = 'alice-NFT-metadata';
+  it('fetch all NFTs owned by a user', async () => {
+    const owner = alice;
+    const collectionMetadata = 'aliceCollectionMetadata';
+    const collectionMax = null;
+    const collectionSymbol = 'AliceSym';
+    const recipientUri = null;
+    const royalty = null;
+    const nftMetadata = 'alice-NFT-metadata';
 
-        let collectionId = await createCollection(
-            api,
-            alice,
-            collectionMetadata,
-            collectionMax,
-            collectionSymbol
-        );
+    const collectionId = await createCollection(
+      api,
+      alice,
+      collectionMetadata,
+      collectionMax,
+      collectionSymbol,
+    );
 
-        const nftIds = [
-            await mintNft(
-                api,
-                alice,
-                owner,
-                collectionId,
-                nftMetadata + '-0',
-                recipientUri,
-                royalty
-            ),
-            await mintNft(
-                api,
-                alice,
-                owner,
-                collectionId,
-                nftMetadata + '-1',
-                recipientUri,
-                royalty
-            ),
-            await mintNft(
-                api,
-                alice,
-                owner,
-                collectionId,
-                nftMetadata + '-2',
-                recipientUri,
-                royalty
-            )
-        ];
+    const nftIds = [
+      await mintNft(
+        api,
+        alice,
+        owner,
+        collectionId,
+        nftMetadata + '-0',
+        recipientUri,
+        royalty,
+      ),
+      await mintNft(
+        api,
+        alice,
+        owner,
+        collectionId,
+        nftMetadata + '-1',
+        recipientUri,
+        royalty,
+      ),
+      await mintNft(
+        api,
+        alice,
+        owner,
+        collectionId,
+        nftMetadata + '-2',
+        recipientUri,
+        royalty,
+      ),
+    ];
 
-        const ownedNfts = await getOwnedNfts(api, alice, collectionId);
+    const ownedNfts = await getOwnedNfts(api, alice, collectionId);
 
-        const isFound = (nftId: number) => {
-            return ownedNfts.find((ownedNftId) => {
-                return ownedNftId === nftId
-            }) !== undefined;
-        };
+    const isFound = (nftId: number) => {
+      return ownedNfts.find((ownedNftId) => {
+        return ownedNftId === nftId;
+      }) !== undefined;
+    };
 
-        nftIds.forEach((nftId) => {
-            expect(isFound(nftId), `NFT ${nftId} should be owned by ${alice}`)
-                .to.be.true
-        });
+    nftIds.forEach((nftId) => {
+      expect(isFound(nftId), `NFT ${nftId} should be owned by ${alice}`)
+        .to.be.true;
     });
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/lockCollection.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/lockCollection.test.ts
+++ b/tests/src/rmrk/lockCollection.test.ts
@@ -1,10 +1,10 @@
-import { getApiConnection } from "../substrate/substrate-api";
-import { expectTxFailure } from "./util/helpers";
-import { createCollection, lockCollection, mintNft } from "./util/tx";
+import {getApiConnection} from '../substrate/substrate-api';
+import {expectTxFailure} from './util/helpers';
+import {createCollection, lockCollection, mintNft} from './util/tx';
 
-describe("integration test: lock collection", () => {
-  const Alice = "//Alice";
-  const Bob = "//Bob";
+describe('integration test: lock collection', () => {
+  const Alice = '//Alice';
+  const Bob = '//Bob';
   const Max = 5;
 
   let api: any;
@@ -12,43 +12,43 @@
     api = await getApiConnection();
   });
 
-  it("lock collection", async () => {
+  it('lock collection', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       await lockCollection(api, Alice, collectionId);
     });
   });
 
-  it("[negative] lock non-existing NFT collection", async () => {
+  it('[negative] lock non-existing NFT collection', async () => {
     const tx = lockCollection(api, Alice, 99999);
     await expectTxFailure(/rmrkCore\.CollectionUnknown/, tx);
   });
 
-  it("[negative] lock not an owner NFT collection issuer", async () => {
+  it('[negative] lock not an owner NFT collection issuer', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       const tx = lockCollection(api, Bob, collectionId);
       await expectTxFailure(/rmrkCore\.NoPermission/, tx);
     });
   });
 
-  it("lock collection with minting", async () => {
+  it('lock collection with minting', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       Max,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       for (let i = 0; i < 5; i++) {
         await mintNft(
@@ -56,22 +56,22 @@
           Alice,
           Alice,
           collectionId,
-          "test-metadata",
+          'test-metadata',
+          null,
           null,
-          null
         );
       }
       await lockCollection(api, Alice, collectionId, Max);
     });
   });
 
-  it("[negative] unable to mint NFT inside a locked collection", async () => {
+  it('[negative] unable to mint NFT inside a locked collection', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       Max,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
       await lockCollection(api, Alice, collectionId);
       const tx = mintNft(
@@ -79,38 +79,36 @@
         Alice,
         Alice,
         collectionId,
-        "test-metadata",
+        'test-metadata',
+        null,
         null,
-        null
       );
       await expectTxFailure(/rmrkCore\.CollectionFullOrLocked/, tx);
     });
   });
 
-  it("[negative] unable to mint NFT inside a full collection", async () => {
-    await createCollection(api, Alice, "test-metadata", 1, "test-symbol").then(
-      async (collectionId) => {
-        await mintNft(
-          api,
-          Alice,
-          Alice,
-          collectionId,
-          "test-metadata",
-          null,
-          null
-        );
-        const tx = mintNft(
-          api,
-          Alice,
-          Alice,
-          collectionId,
-          "test-metadata",
-          null,
-          null
-        );
-        await expectTxFailure(/rmrkCore\.CollectionFullOrLocked/, tx);
-      }
-    );
+  it('[negative] unable to mint NFT inside a full collection', async () => {
+    await createCollection(api, Alice, 'test-metadata', 1, 'test-symbol').then(async (collectionId) => {
+      await mintNft(
+        api,
+        Alice,
+        Alice,
+        collectionId,
+        'test-metadata',
+        null,
+        null,
+      );
+      const tx = mintNft(
+        api,
+        Alice,
+        Alice,
+        collectionId,
+        'test-metadata',
+        null,
+        null,
+      );
+      await expectTxFailure(/rmrkCore\.CollectionFullOrLocked/, tx);
+    });
   });
 
   after(() => {
modifiedtests/src/rmrk/mintNft.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/mintNft.test.ts
+++ b/tests/src/rmrk/mintNft.test.ts
@@ -1,204 +1,206 @@
-import { expect } from 'chai';
-import { getApiConnection } from '../substrate/substrate-api';
-import { getNft } from './util/fetch';
-import { expectTxFailure } from './util/helpers';
-import { createCollection, mintNft } from './util/tx';
+import {expect} from 'chai';
+import {getApiConnection} from '../substrate/substrate-api';
+import {getNft} from './util/fetch';
+import {expectTxFailure} from './util/helpers';
+import {createCollection, mintNft} from './util/tx';
 
-describe("integration test: mint new NFT", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: mint new NFT', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = '//Alice';
-    const bob = '//Bob';
-    const maxCollectionId = 0xFFFFFFFF;
-    const maxNftId = 0xFFFFFFFF;
+  const alice = '//Alice';
+  const bob = '//Bob';
+  const maxCollectionId = 0xFFFFFFFF;
+  const maxNftId = 0xFFFFFFFF;
 
-    it("mint NFT", async () => {
-        const owner = null;
-        const collectionMetadata = 'mintingCollectionMetadata';
-        const collectionMax = null;
-        const collectionSymbol = 'MCS';
-        const recipientUri = null;
-        const royalty = null;
-        const nftMetadata = 'NFT-test-metadata';
+  it('mint NFT', async () => {
+    const owner = null;
+    const collectionMetadata = 'mintingCollectionMetadata';
+    const collectionMax = null;
+    const collectionSymbol = 'MCS';
+    const recipientUri = null;
+    const royalty = null;
+    const nftMetadata = 'NFT-test-metadata';
 
-        let collectionId = await createCollection(
-            api,
-            alice,
-            collectionMetadata,
-            collectionMax,
-            collectionSymbol
-        );
+    const collectionId = await createCollection(
+      api,
+      alice,
+      collectionMetadata,
+      collectionMax,
+      collectionSymbol,
+    );
 
-        await mintNft(
-            api,
-            alice,
-            owner,
-            collectionId,
-            nftMetadata,
-            recipientUri,
-            royalty
-        );
-    });
+    await mintNft(
+      api,
+      alice,
+      owner,
+      collectionId,
+      nftMetadata,
+      recipientUri,
+      royalty,
+    );
+  });
 
-    it("mint NFT and set another owner", async () => {
-        const owner = bob;
-        const collectionMetadata = 'setOwnerCollectionMetadata';
-        const collectionMax = null;
-        const collectionSymbol = 'SOCS';
-        const recipientUri = null;
-        const royalty = null;
-        const nftMetadata = 'setOwner-NFT-metadata';
+  it('mint NFT and set another owner', async () => {
+    const owner = bob;
+    const collectionMetadata = 'setOwnerCollectionMetadata';
+    const collectionMax = null;
+    const collectionSymbol = 'SOCS';
+    const recipientUri = null;
+    const royalty = null;
+    const nftMetadata = 'setOwner-NFT-metadata';
 
-        let collectionId = await createCollection(
-            api,
-            alice,
-            collectionMetadata,
-            collectionMax,
-            collectionSymbol
-        );
+    const collectionId = await createCollection(
+      api,
+      alice,
+      collectionMetadata,
+      collectionMax,
+      collectionSymbol,
+    );
 
-        await mintNft(
-            api,
-            alice,
-            owner,
-            collectionId,
-            nftMetadata,
-            recipientUri,
-            royalty
-        );
-    });
+    await mintNft(
+      api,
+      alice,
+      owner,
+      collectionId,
+      nftMetadata,
+      recipientUri,
+      royalty,
+    );
+  });
 
-    it("mint NFT with recipient and roalty", async () => {
-        const owner = alice;
-        const collectionMetadata = 'mintingCollectionMetadata';
-        const collectionMax = null;
-        const collectionSymbol = 'MCS';
-        const recipientUri = bob;
-        const royalty = 70000;
-        const nftMetadata = 'recipient-royalty-NFT-test-metadata';
+  it('mint NFT with recipient and roalty', async () => {
+    const owner = alice;
+    const collectionMetadata = 'mintingCollectionMetadata';
+    const collectionMax = null;
+    const collectionSymbol = 'MCS';
+    const recipientUri = bob;
+    const royalty = 70000;
+    const nftMetadata = 'recipient-royalty-NFT-test-metadata';
 
-        let collectionId = await createCollection(
-            api,
-            alice,
-            collectionMetadata,
-            collectionMax,
-            collectionSymbol
-        );
+    const collectionId = await createCollection(
+      api,
+      alice,
+      collectionMetadata,
+      collectionMax,
+      collectionSymbol,
+    );
 
-        await mintNft(
-            api,
-            alice,
-            owner,
-            collectionId,
-            nftMetadata,
-            recipientUri,
-            royalty
-        );
-    });
+    await mintNft(
+      api,
+      alice,
+      owner,
+      collectionId,
+      nftMetadata,
+      recipientUri,
+      royalty,
+    );
+  });
 
-    it("mint NFT with resources", async () => {
-        const owner = alice;
-        const collectionMetadata = 'mintingCollectionMetadata';
-        const collectionMax = null;
-        const collectionSymbol = 'MCS';
-        const nftMetadata = 'NFT-with-resources-test-metadata';
-        const resources = [
-          {
-            basic: {
-              metadata: 'basic-resource-nft-minting',
-            },
-          }, {
-            slot: {
-              metadata: 'slot-resource-nft-minting',
-              slot: 9,
-            },
-          }, {
-            composable: {
-              metadata: 'composable-resource-nft-minting',
-              parts: [0, 5, 2],
-            }
-          }, {
-            slot: {
-              metadata: 'slot-resource-nft-minting-2',
-              thumb: 'srnm2',
-              base: 5,
-            }
-          }
-        ];
+  it('mint NFT with resources', async () => {
+    const owner = alice;
+    const collectionMetadata = 'mintingCollectionMetadata';
+    const collectionMax = null;
+    const collectionSymbol = 'MCS';
+    const nftMetadata = 'NFT-with-resources-test-metadata';
+    const resources = [
+      {
+        basic: {
+          metadata: 'basic-resource-nft-minting',
+        },
+      }, {
+        slot: {
+          metadata: 'slot-resource-nft-minting',
+          slot: 9,
+        },
+      }, {
+        composable: {
+          metadata: 'composable-resource-nft-minting',
+          parts: [0, 5, 2],
+        },
+      }, {
+        slot: {
+          metadata: 'slot-resource-nft-minting-2',
+          thumb: 'srnm2',
+          base: 5,
+        },
+      },
+    ];
 
-        let collectionId = await createCollection(
-            api,
-            alice,
-            collectionMetadata,
-            collectionMax,
-            collectionSymbol
-        );
+    const collectionId = await createCollection(
+      api,
+      alice,
+      collectionMetadata,
+      collectionMax,
+      collectionSymbol,
+    );
 
-        await mintNft(
-            api,
-            alice,
-            owner,
-            collectionId,
-            nftMetadata,
-            null, null, true,
-            resources
-        );
-    });
+    await mintNft(
+      api,
+      alice,
+      owner,
+      collectionId,
+      nftMetadata,
+      null,
+      null,
+      true,
+      resources,
+    );
+  });
 
-    it("[negative] unable to mint NFT within non-existing collection", async () => {
-      const owner = alice;
-      const recipientUri = null;
-      const royalty = null;
-      const nftMetadata = "NFT-test-metadata";
+  it('[negative] unable to mint NFT within non-existing collection', async () => {
+    const owner = alice;
+    const recipientUri = null;
+    const royalty = null;
+    const nftMetadata = 'NFT-test-metadata';
 
-      const tx = mintNft(
-        api,
-        alice,
-        owner,
-        maxCollectionId,
-        nftMetadata,
-        recipientUri,
-        royalty
-      );
+    const tx = mintNft(
+      api,
+      alice,
+      owner,
+      maxCollectionId,
+      nftMetadata,
+      recipientUri,
+      royalty,
+    );
 
-      await expectTxFailure(/rmrkCore\.CollectionUnknown/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.CollectionUnknown/, tx);
+  });
 
-    it("[negative] unable to mint NFT by a user that isn't the owner of the collection", async () => {
-      const owner = alice;
-      const collectionMetadata = "mintingCollectionMetadata";
-      const collectionMax = null;
-      const collectionSymbol = "MCS";
-      const recipientUri = null;
-      const royalty = null;
-      const nftMetadata = "NFT-test-metadata";
+  it("[negative] unable to mint NFT by a user that isn't the owner of the collection", async () => {
+    const owner = alice;
+    const collectionMetadata = 'mintingCollectionMetadata';
+    const collectionMax = null;
+    const collectionSymbol = 'MCS';
+    const recipientUri = null;
+    const royalty = null;
+    const nftMetadata = 'NFT-test-metadata';
 
-      let collectionId = await createCollection(
-        api,
-        alice,
-        collectionMetadata,
-        collectionMax,
-        collectionSymbol
-      );
+    const collectionId = await createCollection(
+      api,
+      alice,
+      collectionMetadata,
+      collectionMax,
+      collectionSymbol,
+    );
 
-      const tx = mintNft(
-        api,
-        bob,
-        owner,
-        collectionId,
-        nftMetadata,
-        recipientUri,
-        royalty
-      );
+    const tx = mintNft(
+      api,
+      bob,
+      owner,
+      collectionId,
+      nftMetadata,
+      recipientUri,
+      royalty,
+    );
 
-      await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    it("[negative] unable to fetch non-existing NFT", async () => {
-      const nft = await getNft(api, maxCollectionId, maxNftId);
-      expect(nft.isSome).to.be.false;
-    });
+  it('[negative] unable to fetch non-existing NFT', async () => {
+    const nft = await getNft(api, maxCollectionId, maxNftId);
+    expect(nft.isSome).to.be.false;
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/rejectNft.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/rejectNft.test.ts
+++ b/tests/src/rmrk/rejectNft.test.ts
@@ -1,89 +1,89 @@
-import { expect } from "chai";
-import { getApiConnection } from "../substrate/substrate-api";
+import {expect} from 'chai';
+import {getApiConnection} from '../substrate/substrate-api';
 import {
-    createCollection,
-    mintNft,
-    sendNft,
-    rejectNft
-} from "./util/tx";
-import { getChildren, NftIdTuple } from "./util/fetch";
-import { isNftChildOfAnother, expectTxFailure } from "./util/helpers";
+  createCollection,
+  mintNft,
+  sendNft,
+  rejectNft,
+} from './util/tx';
+import {getChildren, NftIdTuple} from './util/fetch';
+import {isNftChildOfAnother, expectTxFailure} from './util/helpers';
 
-describe("integration test: reject NFT", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: reject NFT', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = "//Alice";
-    const bob = "//Bob";
+  const alice = '//Alice';
+  const bob = '//Bob';
 
-    const createTestCollection = async (issuerUri: string) => {
-        return await createCollection(
-            api,
-            issuerUri,
-            "reject-metadata",
-            null,
-            "rjct"
-        );
-    }
+  const createTestCollection = async (issuerUri: string) => {
+    return await createCollection(
+      api,
+      issuerUri,
+      'reject-metadata',
+      null,
+      'rjct',
+    );
+  };
 
-    it("reject NFT", async () => {
-        const ownerAlice = alice;
-        const ownerBob = bob;
+  it('reject NFT', async () => {
+    const ownerAlice = alice;
+    const ownerBob = bob;
 
-        const aliceCollectionId = await createTestCollection(alice);
-        const bobCollectionId = await createTestCollection(bob);
+    const aliceCollectionId = await createTestCollection(alice);
+    const bobCollectionId = await createTestCollection(bob);
 
-        const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
 
-        await sendNft(api, "pending", ownerBob, bobCollectionId, childNftId, newOwnerNFT);
-        await rejectNft(api, alice, bobCollectionId, childNftId);
+    await sendNft(api, 'pending', ownerBob, bobCollectionId, childNftId, newOwnerNFT);
+    await rejectNft(api, alice, bobCollectionId, childNftId);
 
-        const isChild = await isNftChildOfAnother(api, bobCollectionId, childNftId, newOwnerNFT);
-        expect(isChild, 'Error: rejected NFT is still a child of the target NFT').to.be.false;
-    });
+    const isChild = await isNftChildOfAnother(api, bobCollectionId, childNftId, newOwnerNFT);
+    expect(isChild, 'Error: rejected NFT is still a child of the target NFT').to.be.false;
+  });
 
-    it("[negative] unable to reject NFT by a not-an-owner", async () => {
-        const ownerAlice = alice;
-        const ownerBob = bob;
+  it('[negative] unable to reject NFT by a not-an-owner', async () => {
+    const ownerAlice = alice;
+    const ownerBob = bob;
 
-        const aliceCollectionId = await createTestCollection(alice);
-        const bobCollectionId = await createTestCollection(bob);
+    const aliceCollectionId = await createTestCollection(alice);
+    const bobCollectionId = await createTestCollection(bob);
 
-        const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
 
-        await sendNft(api, "pending", ownerBob, bobCollectionId, childNftId, newOwnerNFT);
-        const tx = rejectNft(api, bob, bobCollectionId, childNftId);
+    await sendNft(api, 'pending', ownerBob, bobCollectionId, childNftId, newOwnerNFT);
+    const tx = rejectNft(api, bob, bobCollectionId, childNftId);
 
-        await expectTxFailure(/rmrkCore\.CannotRejectNonOwnedNft/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.CannotRejectNonOwnedNft/, tx);
+  });
 
-    it("[negative] unable to reject non-existing NFT", async () => {
-        const maxNftId = 0xFFFFFFFF;
+  it('[negative] unable to reject non-existing NFT', async () => {
+    const maxNftId = 0xFFFFFFFF;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const tx = rejectNft(api, alice, collectionId, maxNftId);
+    const tx = rejectNft(api, alice, collectionId, maxNftId);
 
-        await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
+  });
 
-    it("[negative] unable to reject NFT which is not sent", async () => {
-        const ownerAlice = alice;
+  it('[negative] unable to reject NFT which is not sent', async () => {
+    const ownerAlice = alice;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const nftId = await mintNft(api, alice, ownerAlice, collectionId, "parent-nft-metadata");
+    const nftId = await mintNft(api, alice, ownerAlice, collectionId, 'parent-nft-metadata');
 
-        const tx = rejectNft(api, alice, collectionId, nftId);
+    const tx = rejectNft(api, alice, collectionId, nftId);
 
-        await expectTxFailure(/rmrkCore\.CannotRejectNonPendingNft/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.CannotRejectNonPendingNft/, tx);
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/removeResource.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/removeResource.test.ts
+++ b/tests/src/rmrk/removeResource.test.ts
@@ -1,348 +1,348 @@
-import { expect } from 'chai';
-import privateKey from "../substrate/privateKey";
-import { executeTransaction, getApiConnection } from '../substrate/substrate-api';
-import { getNft, NftIdTuple } from './util/fetch';
-import { expectTxFailure } from './util/helpers';
+import {expect} from 'chai';
+import privateKey from '../substrate/privateKey';
+import {executeTransaction, getApiConnection} from '../substrate/substrate-api';
+import {getNft, NftIdTuple} from './util/fetch';
+import {expectTxFailure} from './util/helpers';
 import {
   acceptNft, acceptResourceRemoval, addNftBasicResource,
   createBase,
   createCollection,
-  mintNft, removeNftResource, sendNft
-} from "./util/tx";
+  mintNft, removeNftResource, sendNft,
+} from './util/tx';
 
 
 
 
 describe('Integration test: remove nft resource', () => {
-    let api: any;
-    let ss58Format: string;
-    before(async () => {
-      api = await getApiConnection();
-      ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    });
+  let api: any;
+  let ss58Format: string;
+  before(async () => {
+    api = await getApiConnection();
+    ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  });
 
-    const Alice = "//Alice";
-    const Bob = "//Bob";
-    const src = "test-basic-src";
-    const metadata = "test-basic-metadata";
-    const license = "test-basic-license";
-    const thumb = "test-basic-thumb";
+  const Alice = '//Alice';
+  const Bob = '//Bob';
+  const src = 'test-basic-src';
+  const metadata = 'test-basic-metadata';
+  const license = 'test-basic-license';
+  const thumb = 'test-basic-thumb';
 
-    it('deleting a resource directly by the NFT owner', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('deleting a resource directly by the NFT owner', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const nftAlice = await mintNft(
-            api,
-            Alice,
-            Alice,
-            collectionIdAlice,
-            "nft-metadata"
-        );
+    const nftAlice = await mintNft(
+      api,
+      Alice,
+      Alice,
+      collectionIdAlice,
+      'nft-metadata',
+    );
 
-        const resourceId = await addNftBasicResource(
-            api,
-            Alice,
-            "added",
-            collectionIdAlice,
-            nftAlice,
-            src,
-            metadata,
-            license,
-            thumb
-        );
+    const resourceId = await addNftBasicResource(
+      api,
+      Alice,
+      'added',
+      collectionIdAlice,
+      nftAlice,
+      src,
+      metadata,
+      license,
+      thumb,
+    );
 
-        await removeNftResource(api, 'removed', Alice, collectionIdAlice, nftAlice, resourceId);
-    });
+    await removeNftResource(api, 'removed', Alice, collectionIdAlice, nftAlice, resourceId);
+  });
 
-    it('deleting resources indirectly by the NFT owner', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('deleting resources indirectly by the NFT owner', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const parentNftId = await mintNft(api, Alice, Alice, collectionIdAlice, "parent-nft-metadata");
-        const childNftId = await mintNft(api, Alice, Alice, collectionIdAlice, "child-nft-metadata");
+    const parentNftId = await mintNft(api, Alice, Alice, collectionIdAlice, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, Alice, Alice, collectionIdAlice, 'child-nft-metadata');
 
-        const resourceId = await addNftBasicResource(
-            api,
-            Alice,
-            "added",
-            collectionIdAlice,
-            childNftId,
-            src,
-            metadata,
-            license,
-            thumb
-        );
+    const resourceId = await addNftBasicResource(
+      api,
+      Alice,
+      'added',
+      collectionIdAlice,
+      childNftId,
+      src,
+      metadata,
+      license,
+      thumb,
+    );
 
-        const newOwnerNFT: NftIdTuple = [collectionIdAlice, parentNftId];
+    const newOwnerNFT: NftIdTuple = [collectionIdAlice, parentNftId];
 
-        await sendNft(api, "sent", Alice, collectionIdAlice, childNftId, newOwnerNFT);
+    await sendNft(api, 'sent', Alice, collectionIdAlice, childNftId, newOwnerNFT);
 
-        await removeNftResource(api, 'removed', Alice, collectionIdAlice, childNftId, resourceId);
-    });
+    await removeNftResource(api, 'removed', Alice, collectionIdAlice, childNftId, resourceId);
+  });
 
-    it('deleting a resource by the collection owner', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('deleting a resource by the collection owner', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const nftBob = await mintNft(
-            api,
-            Alice,
-            Bob,
-            collectionIdAlice,
-            "nft-metadata"
-        );
+    const nftBob = await mintNft(
+      api,
+      Alice,
+      Bob,
+      collectionIdAlice,
+      'nft-metadata',
+    );
 
-        const resourceId = await addNftBasicResource(
-            api,
-            Alice,
-            "pending",
-            collectionIdAlice,
-            nftBob,
-            src,
-            metadata,
-            license,
-            thumb
-        );
+    const resourceId = await addNftBasicResource(
+      api,
+      Alice,
+      'pending',
+      collectionIdAlice,
+      nftBob,
+      src,
+      metadata,
+      license,
+      thumb,
+    );
 
-        await removeNftResource(api, 'pending', Alice, collectionIdAlice, nftBob, resourceId);
-        await acceptResourceRemoval(api, Bob, collectionIdAlice, nftBob, resourceId);
-    });
+    await removeNftResource(api, 'pending', Alice, collectionIdAlice, nftBob, resourceId);
+    await acceptResourceRemoval(api, Bob, collectionIdAlice, nftBob, resourceId);
+  });
 
-    it('deleting a resource in a nested NFT by the collection owner', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('deleting a resource in a nested NFT by the collection owner', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const parentNftId = await mintNft(
-            api,
-            Alice,
-            Bob,
-            collectionIdAlice,
-            "parent-nft-metadata"
-        );
-        const childNftId = await mintNft(
-            api,
-            Alice,
-            Bob,
-            collectionIdAlice,
-            "child-nft-metadata"
-        );
+    const parentNftId = await mintNft(
+      api,
+      Alice,
+      Bob,
+      collectionIdAlice,
+      'parent-nft-metadata',
+    );
+    const childNftId = await mintNft(
+      api,
+      Alice,
+      Bob,
+      collectionIdAlice,
+      'child-nft-metadata',
+    );
 
-        const resourceId = await addNftBasicResource(
-            api,
-            Alice,
-            "pending",
-            collectionIdAlice,
-            childNftId,
-            src,
-            metadata,
-            license,
-            thumb
-        );
+    const resourceId = await addNftBasicResource(
+      api,
+      Alice,
+      'pending',
+      collectionIdAlice,
+      childNftId,
+      src,
+      metadata,
+      license,
+      thumb,
+    );
 
-        const newOwnerNFT: NftIdTuple = [collectionIdAlice, parentNftId];
+    const newOwnerNFT: NftIdTuple = [collectionIdAlice, parentNftId];
 
-        await sendNft(api, "sent", Bob, collectionIdAlice, childNftId, newOwnerNFT);
+    await sendNft(api, 'sent', Bob, collectionIdAlice, childNftId, newOwnerNFT);
 
-        await removeNftResource(api, 'pending', Alice, collectionIdAlice, childNftId, resourceId);
-        await acceptResourceRemoval(api, Bob, collectionIdAlice, childNftId, resourceId);
-    });
+    await removeNftResource(api, 'pending', Alice, collectionIdAlice, childNftId, resourceId);
+    await acceptResourceRemoval(api, Bob, collectionIdAlice, childNftId, resourceId);
+  });
 
-    it('[negative]: can\'t delete a resource in a non-existing collection', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('[negative]: can\'t delete a resource in a non-existing collection', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const nftAlice = await mintNft(
-            api,
-            Alice,
-            Alice,
-            collectionIdAlice,
-            "nft-metadata"
-        );
+    const nftAlice = await mintNft(
+      api,
+      Alice,
+      Alice,
+      collectionIdAlice,
+      'nft-metadata',
+    );
 
-        const resourceId = await addNftBasicResource(
-            api,
-            Alice,
-            "added",
-            collectionIdAlice,
-            nftAlice,
-            src,
-            metadata,
-            license,
-            thumb
-        );
+    const resourceId = await addNftBasicResource(
+      api,
+      Alice,
+      'added',
+      collectionIdAlice,
+      nftAlice,
+      src,
+      metadata,
+      license,
+      thumb,
+    );
 
-        const tx = removeNftResource(api, 'removed', Alice, 0xFFFFFFFF, nftAlice, resourceId);
-        await expectTxFailure(/rmrkCore\.CollectionUnknown/, tx); // FIXME: inappropriate error message (NoAvailableNftId)
-    });
+    const tx = removeNftResource(api, 'removed', Alice, 0xFFFFFFFF, nftAlice, resourceId);
+    await expectTxFailure(/rmrkCore\.CollectionUnknown/, tx); // FIXME: inappropriate error message (NoAvailableNftId)
+  });
 
-    it('[negative]: only collection owner can delete a resource', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('[negative]: only collection owner can delete a resource', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const nftAlice = await mintNft(
-            api,
-            Alice,
-            Alice,
-            collectionIdAlice,
-            "nft-metadata"
-        );
+    const nftAlice = await mintNft(
+      api,
+      Alice,
+      Alice,
+      collectionIdAlice,
+      'nft-metadata',
+    );
 
-        const resourceId = await addNftBasicResource(
-            api,
-            Alice,
-            "added",
-            collectionIdAlice,
-            nftAlice,
-            src,
-            metadata,
-            license,
-            thumb
-        );
+    const resourceId = await addNftBasicResource(
+      api,
+      Alice,
+      'added',
+      collectionIdAlice,
+      nftAlice,
+      src,
+      metadata,
+      license,
+      thumb,
+    );
 
-        const tx = removeNftResource(api, 'removed', Bob, collectionIdAlice, nftAlice, resourceId);
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    const tx = removeNftResource(api, 'removed', Bob, collectionIdAlice, nftAlice, resourceId);
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    it('[negative]: cannot delete a resource that does not exist', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('[negative]: cannot delete a resource that does not exist', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const nftAlice = await mintNft(
-            api,
-            Alice,
-            Alice,
-            collectionIdAlice,
-            "nft-metadata"
-        );
+    const nftAlice = await mintNft(
+      api,
+      Alice,
+      Alice,
+      collectionIdAlice,
+      'nft-metadata',
+    );
 
-        const tx = removeNftResource(api, 'removed', Alice, collectionIdAlice, nftAlice, 127);
-        await expectTxFailure(/rmrkCore\.ResourceDoesntExist/, tx);
-    });
+    const tx = removeNftResource(api, 'removed', Alice, collectionIdAlice, nftAlice, 127);
+    await expectTxFailure(/rmrkCore\.ResourceDoesntExist/, tx);
+  });
 
-    it('[negative]: Cannot accept deleting resource without owner attempt do delete it', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('[negative]: Cannot accept deleting resource without owner attempt do delete it', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const nftBob = await mintNft(
-            api,
-            Alice,
-            Bob,
-            collectionIdAlice,
-            "nft-metadata"
-        );
+    const nftBob = await mintNft(
+      api,
+      Alice,
+      Bob,
+      collectionIdAlice,
+      'nft-metadata',
+    );
 
-        const resourceId = await addNftBasicResource(
-            api,
-            Alice,
-            "pending",
-            collectionIdAlice,
-            nftBob,
-            src,
-            metadata,
-            license,
-            thumb
-        );
+    const resourceId = await addNftBasicResource(
+      api,
+      Alice,
+      'pending',
+      collectionIdAlice,
+      nftBob,
+      src,
+      metadata,
+      license,
+      thumb,
+    );
 
-        const tx = acceptResourceRemoval(api, Bob, collectionIdAlice, nftBob, resourceId);
-        await expectTxFailure(/rmrkCore\.ResourceNotPending/, tx);
-    });
+    const tx = acceptResourceRemoval(api, Bob, collectionIdAlice, nftBob, resourceId);
+    await expectTxFailure(/rmrkCore\.ResourceNotPending/, tx);
+  });
 
-    it('[negative]: cannot confirm the deletion of a non-existing resource', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('[negative]: cannot confirm the deletion of a non-existing resource', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const nftBob = await mintNft(
-            api,
-            Alice,
-            Bob,
-            collectionIdAlice,
-            "nft-metadata"
-        );
+    const nftBob = await mintNft(
+      api,
+      Alice,
+      Bob,
+      collectionIdAlice,
+      'nft-metadata',
+    );
 
-        const tx = acceptResourceRemoval(api, Bob, collectionIdAlice, nftBob, 127);
-        await expectTxFailure(/rmrkCore\.ResourceDoesntExist/, tx);
-    });
+    const tx = acceptResourceRemoval(api, Bob, collectionIdAlice, nftBob, 127);
+    await expectTxFailure(/rmrkCore\.ResourceDoesntExist/, tx);
+  });
 
-    it('[negative]: Non-owner user cannot confirm the deletion of resource', async () => {
-        const collectionIdAlice = await createCollection(
-            api,
-            Alice,
-            "test-metadata",
-            null,
-            "test-symbol"
-        );
+  it('[negative]: Non-owner user cannot confirm the deletion of resource', async () => {
+    const collectionIdAlice = await createCollection(
+      api,
+      Alice,
+      'test-metadata',
+      null,
+      'test-symbol',
+    );
 
-        const nftAlice = await mintNft(
-            api,
-            Alice,
-            Alice,
-            collectionIdAlice,
-            "nft-metadata"
-        );
+    const nftAlice = await mintNft(
+      api,
+      Alice,
+      Alice,
+      collectionIdAlice,
+      'nft-metadata',
+    );
 
-        const resourceId = await addNftBasicResource(
-            api,
-            Alice,
-            "added",
-            collectionIdAlice,
-            nftAlice,
-            src,
-            metadata,
-            license,
-            thumb
-        );
+    const resourceId = await addNftBasicResource(
+      api,
+      Alice,
+      'added',
+      collectionIdAlice,
+      nftAlice,
+      src,
+      metadata,
+      license,
+      thumb,
+    );
 
-        const tx = acceptResourceRemoval(api, Bob, collectionIdAlice, nftAlice, resourceId);
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    const tx = acceptResourceRemoval(api, Bob, collectionIdAlice, nftAlice, resourceId);
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    after(() => {
-        api.disconnect();
-    });
+  after(() => {
+    api.disconnect();
+  });
 });
modifiedtests/src/rmrk/sendNft.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/sendNft.test.ts
+++ b/tests/src/rmrk/sendNft.test.ts
@@ -1,252 +1,252 @@
-import { expect } from "chai";
-import { getApiConnection } from "../substrate/substrate-api";
-import { createCollection, mintNft, sendNft } from "./util/tx";
-import { NftIdTuple } from "./util/fetch";
-import { isNftChildOfAnother, expectTxFailure } from "./util/helpers";
+import {expect} from 'chai';
+import {getApiConnection} from '../substrate/substrate-api';
+import {createCollection, mintNft, sendNft} from './util/tx';
+import {NftIdTuple} from './util/fetch';
+import {isNftChildOfAnother, expectTxFailure} from './util/helpers';
 
-describe("integration test: send NFT", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: send NFT', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const maxNftId = 0xFFFFFFFF;
+  const maxNftId = 0xFFFFFFFF;
 
-    const alice = "//Alice";
-    const bob = "//Bob";
+  const alice = '//Alice';
+  const bob = '//Bob';
 
-    const createTestCollection = async (issuerUri: string) => {
-        return await createCollection(
-            api,
-            issuerUri,
-            "nft-collection-metadata",
-            null,
-            "nft-collection"
-        );
-    };
+  const createTestCollection = async (issuerUri: string) => {
+    return await createCollection(
+      api,
+      issuerUri,
+      'nft-collection-metadata',
+      null,
+      'nft-collection',
+    );
+  };
 
 
-    it("send NFT to another user", async () => {
-        const originalOwnerUri = alice;
-        const newOwnerUri = bob;
+  it('send NFT to another user', async () => {
+    const originalOwnerUri = alice;
+    const newOwnerUri = bob;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const nftId = await mintNft(api, alice, originalOwnerUri, collectionId, "nft-metadata");
+    const nftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'nft-metadata');
 
-        await sendNft(api, "sent", originalOwnerUri, collectionId, nftId, newOwnerUri);
-    });
+    await sendNft(api, 'sent', originalOwnerUri, collectionId, nftId, newOwnerUri);
+  });
 
-    it("[negative] unable to send non-existing NFT", async () => {
-        const originalOwnerUri = alice;
-        const newOwnerUri = bob;
+  it('[negative] unable to send non-existing NFT', async () => {
+    const originalOwnerUri = alice;
+    const newOwnerUri = bob;
 
-        const collectionId = 0;
-        const tx = sendNft(api, "sent", originalOwnerUri, collectionId, maxNftId, newOwnerUri);
+    const collectionId = 0;
+    const tx = sendNft(api, 'sent', originalOwnerUri, collectionId, maxNftId, newOwnerUri);
 
-        await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
+  });
 
-    it("[negative] unable to send NFT by a not-an-owner", async () => {
-        const originalOwnerUri = alice;
-        const newOwnerUri = bob;
+  it('[negative] unable to send NFT by a not-an-owner', async () => {
+    const originalOwnerUri = alice;
+    const newOwnerUri = bob;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const nftId = await mintNft(api, alice, originalOwnerUri, collectionId, "nft-metadata");
+    const nftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'nft-metadata');
 
-        const tx = sendNft(api, "sent", newOwnerUri, collectionId, nftId, newOwnerUri);
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    const tx = sendNft(api, 'sent', newOwnerUri, collectionId, nftId, newOwnerUri);
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    it("send NFT to another NFT (same owner)", async () => {
-        const originalOwnerUri = alice;
+  it('send NFT to another NFT (same owner)', async () => {
+    const originalOwnerUri = alice;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const parentNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
 
-        await sendNft(api, "sent", alice, collectionId, childNftId, newOwnerNFT);
+    await sendNft(api, 'sent', alice, collectionId, childNftId, newOwnerNFT);
 
-        const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
-        expect(isChild).to.be.true;
-    });
+    const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
+    expect(isChild).to.be.true;
+  });
 
-    it("[negative] send non-existing NFT to another NFT", async () => {
-        const originalOwnerUri = alice;
+  it('[negative] send non-existing NFT to another NFT', async () => {
+    const originalOwnerUri = alice;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const parentNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "parent-nft-metadata");
-        const childNftId = maxNftId;
+    const parentNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'parent-nft-metadata');
+    const childNftId = maxNftId;
 
-        const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
 
-        const tx = sendNft(api, "sent", alice, collectionId, childNftId, newOwnerNFT);
+    const tx = sendNft(api, 'sent', alice, collectionId, childNftId, newOwnerNFT);
 
-        await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
+    await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
 
-        const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
-        expect(isChild).to.be.false;
-    });
+    const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
+    expect(isChild).to.be.false;
+  });
 
-    it("send NFT to another NFT (by not-an-owner)", async () => {
-        const originalOwnerUri = alice;
+  it('send NFT to another NFT (by not-an-owner)', async () => {
+    const originalOwnerUri = alice;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const author = alice;
-        const attacker = bob;
+    const author = alice;
+    const attacker = bob;
 
-        const parentNftId = await mintNft(api, author, originalOwnerUri, collectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, author, originalOwnerUri, collectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, author, originalOwnerUri, collectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, author, originalOwnerUri, collectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
 
-        const tx = sendNft(api, "sent", attacker, collectionId, childNftId, newOwnerNFT);
+    const tx = sendNft(api, 'sent', attacker, collectionId, childNftId, newOwnerNFT);
 
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
 
-        const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
-        expect(isChild).to.be.false;
-    });
+    const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
+    expect(isChild).to.be.false;
+  });
 
-    it("[negative] send NFT to non-existing NFT", async () => {
-        const originalOwnerUri = alice;
+  it('[negative] send NFT to non-existing NFT', async () => {
+    const originalOwnerUri = alice;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const parentNftId = maxNftId;
-        const childNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "child-nft-metadata");
+    const parentNftId = maxNftId;
+    const childNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
 
-        const tx = sendNft(api, "sent", alice, collectionId, childNftId, newOwnerNFT);
+    const tx = sendNft(api, 'sent', alice, collectionId, childNftId, newOwnerNFT);
 
-        await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
+    await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
 
-        const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
-        expect(isChild).to.be.false;
-    });
+    const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
+    expect(isChild).to.be.false;
+  });
 
-    it("send NFT to another NFT owned by another user", async () => {
-        const ownerAlice = alice;
-        const ownerBob = bob;
+  it('send NFT to another NFT owned by another user', async () => {
+    const ownerAlice = alice;
+    const ownerBob = bob;
 
-        const aliceCollectionId = await createTestCollection(alice);
-        const bobCollectionId = await createTestCollection(bob);
+    const aliceCollectionId = await createTestCollection(alice);
+    const bobCollectionId = await createTestCollection(bob);
 
-        const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, ownerAlice, aliceCollectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, bob, ownerBob, bobCollectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [aliceCollectionId, parentNftId];
 
-        await sendNft(api, "pending", bob, bobCollectionId, childNftId, newOwnerNFT);
-    });
+    await sendNft(api, 'pending', bob, bobCollectionId, childNftId, newOwnerNFT);
+  });
 
-    it("[negative] unable to send NFT to itself", async () => {
-        const nftOwner = alice;
-        const collectionId = await createTestCollection(alice);
+  it('[negative] unable to send NFT to itself', async () => {
+    const nftOwner = alice;
+    const collectionId = await createTestCollection(alice);
 
-        const nftId = await mintNft(api, alice, nftOwner, collectionId, "ouroboros-nft-metadata");
+    const nftId = await mintNft(api, alice, nftOwner, collectionId, 'ouroboros-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [collectionId, nftId];
+    const newOwnerNFT: NftIdTuple = [collectionId, nftId];
 
-        const tx = sendNft(api, "sent", alice, collectionId, nftId, newOwnerNFT);
+    const tx = sendNft(api, 'sent', alice, collectionId, nftId, newOwnerNFT);
 
-        await expectTxFailure(/rmrkCore\.CannotSendToDescendentOrSelf/, tx);
+    await expectTxFailure(/rmrkCore\.CannotSendToDescendentOrSelf/, tx);
 
-        const isChild = await isNftChildOfAnother(api, collectionId, nftId, newOwnerNFT);
-        expect(isChild).to.be.false;
-    });
+    const isChild = await isNftChildOfAnother(api, collectionId, nftId, newOwnerNFT);
+    expect(isChild).to.be.false;
+  });
 
-    it("[negative] unable to send NFT to child NFT", async () => {
-        const originalOwnerUri = alice;
+  it('[negative] unable to send NFT to child NFT', async () => {
+    const originalOwnerUri = alice;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const parentNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'child-nft-metadata');
 
-        const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
+    const newOwnerNFT: NftIdTuple = [collectionId, parentNftId];
 
-        await sendNft(api, "sent", alice, collectionId, childNftId, newOwnerNFT);
+    await sendNft(api, 'sent', alice, collectionId, childNftId, newOwnerNFT);
 
-        const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
-        expect(isChild).to.be.true;
+    const isChild = await isNftChildOfAnother(api, collectionId, childNftId, newOwnerNFT);
+    expect(isChild).to.be.true;
 
-        const descendentOwner: NftIdTuple = [collectionId, childNftId];
-        const tx = sendNft(api, "sent", alice, collectionId, parentNftId, descendentOwner);
+    const descendentOwner: NftIdTuple = [collectionId, childNftId];
+    const tx = sendNft(api, 'sent', alice, collectionId, parentNftId, descendentOwner);
 
-        await expectTxFailure(/rmrkCore\.CannotSendToDescendentOrSelf/, tx);
-        const isOuroboros = await isNftChildOfAnother(api, collectionId, parentNftId, descendentOwner);
-        expect(isOuroboros).to.be.false;
-    });
+    await expectTxFailure(/rmrkCore\.CannotSendToDescendentOrSelf/, tx);
+    const isOuroboros = await isNftChildOfAnother(api, collectionId, parentNftId, descendentOwner);
+    expect(isOuroboros).to.be.false;
+  });
 
-    it("[negative] unable to send NFT to descendent NFT", async () => {
-        const originalOwnerUri = alice;
+  it('[negative] unable to send NFT to descendent NFT', async () => {
+    const originalOwnerUri = alice;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const parentNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "child-nft-metadata");
-        const grandsonNftId = await mintNft(api, alice, originalOwnerUri, collectionId, "grandson-nft-metadata");
+    const parentNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'child-nft-metadata');
+    const grandsonNftId = await mintNft(api, alice, originalOwnerUri, collectionId, 'grandson-nft-metadata');
 
-        const ownerParentNFT: NftIdTuple = [collectionId, parentNftId];
+    const ownerParentNFT: NftIdTuple = [collectionId, parentNftId];
 
-        await sendNft(api, "sent", alice, collectionId, childNftId, ownerParentNFT);
+    await sendNft(api, 'sent', alice, collectionId, childNftId, ownerParentNFT);
 
-        const isChild = await isNftChildOfAnother(api, collectionId, childNftId, ownerParentNFT);
-        expect(isChild).to.be.true;
+    const isChild = await isNftChildOfAnother(api, collectionId, childNftId, ownerParentNFT);
+    expect(isChild).to.be.true;
 
-        const ownerChildNFT: NftIdTuple = [collectionId, childNftId];
-        await sendNft(api, "sent", alice, collectionId, grandsonNftId, ownerChildNFT);
+    const ownerChildNFT: NftIdTuple = [collectionId, childNftId];
+    await sendNft(api, 'sent', alice, collectionId, grandsonNftId, ownerChildNFT);
 
-        const isGrandson = await isNftChildOfAnother(api, collectionId, grandsonNftId, ownerChildNFT);
-        expect(isGrandson).to.be.true;
+    const isGrandson = await isNftChildOfAnother(api, collectionId, grandsonNftId, ownerChildNFT);
+    expect(isGrandson).to.be.true;
 
-        const ownerGrandsonNFT: NftIdTuple = [collectionId, grandsonNftId];
-        const tx = sendNft(api, "sent", alice, collectionId, parentNftId, ownerGrandsonNFT);
+    const ownerGrandsonNFT: NftIdTuple = [collectionId, grandsonNftId];
+    const tx = sendNft(api, 'sent', alice, collectionId, parentNftId, ownerGrandsonNFT);
 
-        await expectTxFailure(/rmrkCore\.CannotSendToDescendentOrSelf/, tx);
-        const isOuroboros = await isNftChildOfAnother(api, collectionId, parentNftId, ownerGrandsonNFT);
-        expect(isOuroboros).to.be.false;
-    });
+    await expectTxFailure(/rmrkCore\.CannotSendToDescendentOrSelf/, tx);
+    const isOuroboros = await isNftChildOfAnother(api, collectionId, parentNftId, ownerGrandsonNFT);
+    expect(isOuroboros).to.be.false;
+  });
 
-    it("send nested NFT to another user", async () => {
-        const originalOwner = alice;
-        const newOwner = bob;
+  it('send nested NFT to another user', async () => {
+    const originalOwner = alice;
+    const newOwner = bob;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const parentNftId = await mintNft(api, alice, originalOwner, collectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, alice, originalOwner, collectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, originalOwner, collectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, alice, originalOwner, collectionId, 'child-nft-metadata');
 
-        const parentNftTuple: NftIdTuple = [collectionId, parentNftId];
+    const parentNftTuple: NftIdTuple = [collectionId, parentNftId];
 
-        await sendNft(api, "sent", originalOwner, collectionId, childNftId, parentNftTuple);
+    await sendNft(api, 'sent', originalOwner, collectionId, childNftId, parentNftTuple);
 
-        await sendNft(api, "sent", originalOwner, collectionId, childNftId, newOwner);
-    });
+    await sendNft(api, 'sent', originalOwner, collectionId, childNftId, newOwner);
+  });
 
-    it("[negative] send nested NFT to another user (by a not-root-owner)", async () => {
-        const originalOwner = alice;
-        const newOwner = bob;
+  it('[negative] send nested NFT to another user (by a not-root-owner)', async () => {
+    const originalOwner = alice;
+    const newOwner = bob;
 
-        const collectionId = await createTestCollection(alice);
+    const collectionId = await createTestCollection(alice);
 
-        const parentNftId = await mintNft(api, alice, originalOwner, collectionId, "parent-nft-metadata");
-        const childNftId = await mintNft(api, alice, originalOwner, collectionId, "child-nft-metadata");
+    const parentNftId = await mintNft(api, alice, originalOwner, collectionId, 'parent-nft-metadata');
+    const childNftId = await mintNft(api, alice, originalOwner, collectionId, 'child-nft-metadata');
 
-        const parentNftTuple: NftIdTuple = [collectionId, parentNftId];
+    const parentNftTuple: NftIdTuple = [collectionId, parentNftId];
 
-        await sendNft(api, "sent", originalOwner, collectionId, childNftId, parentNftTuple);
+    await sendNft(api, 'sent', originalOwner, collectionId, childNftId, parentNftTuple);
 
-        const tx = sendNft(api, "sent", newOwner, collectionId, childNftId, newOwner);
+    const tx = sendNft(api, 'sent', newOwner, collectionId, childNftId, newOwner);
 
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/setCollectionProperty.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/setCollectionProperty.test.ts
+++ b/tests/src/rmrk/setCollectionProperty.test.ts
@@ -1,63 +1,63 @@
-import { getApiConnection } from "../substrate/substrate-api";
-import { expectTxFailure } from "./util/helpers";
-import { createCollection, setPropertyCollection } from "./util/tx";
+import {getApiConnection} from '../substrate/substrate-api';
+import {expectTxFailure} from './util/helpers';
+import {createCollection, setPropertyCollection} from './util/tx';
 
-describe("integration test: set collection property", () => {
-  const Alice = "//Alice";
-  const Bob = "//Bob";
+describe('integration test: set collection property', () => {
+  const Alice = '//Alice';
+  const Bob = '//Bob';
 
   let api: any;
   before(async () => {
     api = await getApiConnection();
   });
 
-  it("set collection property", async () => {
+  it('set collection property', async () => {
     await createCollection(
       api,
       Alice,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
-      await setPropertyCollection(api, Alice, collectionId, "test_key", "42");
-      await setPropertyCollection(api, Alice, collectionId, "test_key", "10");
+      await setPropertyCollection(api, Alice, collectionId, 'test_key', '42');
+      await setPropertyCollection(api, Alice, collectionId, 'test_key', '10');
       await setPropertyCollection(
         api,
         Alice,
         collectionId,
-        "second_test_key",
-        "111"
+        'second_test_key',
+        '111',
       );
     });
   });
 
-  it("[negative] set non-existing collection property", async () => {
+  it('[negative] set non-existing collection property', async () => {
     const tx = setPropertyCollection(
       api,
       Alice,
       9999,
-      "test_key",
-      "42"
+      'test_key',
+      '42',
     );
     await expectTxFailure(/rmrkCore\.CollectionUnknown/, tx);
   });
 
-  it("[negative] set property not an owner NFT collection issuer", async () => {
+  it('[negative] set property not an owner NFT collection issuer', async () => {
     await createCollection(
       api,
       Bob,
-      "test-metadata",
+      'test-metadata',
       null,
-      "test-symbol"
+      'test-symbol',
     ).then(async (collectionId) => {
-        const tx = setPropertyCollection(
-          api,
-          Alice,
-          collectionId,
-          "test_key",
-          "42"
-        );
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+      const tx = setPropertyCollection(
+        api,
+        Alice,
+        collectionId,
+        'test_key',
+        '42',
+      );
+      await expectTxFailure(/rmrkCore\.NoPermission/, tx);
     });
   });
 
modifiedtests/src/rmrk/setEquippableList.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/setEquippableList.test.ts
+++ b/tests/src/rmrk/setEquippableList.test.ts
@@ -1,111 +1,111 @@
-import { getApiConnection } from '../substrate/substrate-api';
-import { expectTxFailure } from './util/helpers';
-import { createCollection, createBase, setEquippableList } from "./util/tx";
+import {getApiConnection} from '../substrate/substrate-api';
+import {expectTxFailure} from './util/helpers';
+import {createCollection, createBase, setEquippableList} from './util/tx';
 
 describe("integration test: set slot's Equippable List", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = '//Alice';
-    const bob = '//Bob';
+  const alice = '//Alice';
+  const bob = '//Bob';
 
-    it("set Base's slot Equippable List", async () => {
-        const collectionIds = [
-            await createCollection(
-                api,
-                alice,
-                "equiplist-collection-metadata",
-                null,
-                "equiplist-0"
-            ),
-            await createCollection(
-                api,
-                alice,
-                "equiplist-collection-metadata",
-                null,
-                "equiplist-1"
-            )
-        ]
+  it("set Base's slot Equippable List", async () => {
+    const collectionIds = [
+      await createCollection(
+        api,
+        alice,
+        'equiplist-collection-metadata',
+        null,
+        'equiplist-0',
+      ),
+      await createCollection(
+        api,
+        alice,
+        'equiplist-collection-metadata',
+        null,
+        'equiplist-1',
+      ),
+    ];
 
-        const slotId = 202;
+    const slotId = 202;
 
-        const baseId = await createBase(api, alice, 'slotpartany-base-type', 'slotpartany', [
-            {
-                "SlotPart": {
-                    id: slotId,
-                    equippable: "All",
-                    z: 1,
-                    src: "some-fallback-slot-url"
-                }
-            }
-        ]);
+    const baseId = await createBase(api, alice, 'slotpartany-base-type', 'slotpartany', [
+      {
+        'SlotPart': {
+          id: slotId,
+          equippable: 'All',
+          z: 1,
+          src: 'some-fallback-slot-url',
+        },
+      },
+    ]);
 
-        await setEquippableList(api, alice, baseId, slotId, "All");
-        await setEquippableList(api, alice, baseId, slotId, "Empty");
-        await setEquippableList(api, alice, baseId, slotId, { "Custom": collectionIds });
-    });
+    await setEquippableList(api, alice, baseId, slotId, 'All');
+    await setEquippableList(api, alice, baseId, slotId, 'Empty');
+    await setEquippableList(api, alice, baseId, slotId, {'Custom': collectionIds});
+  });
 
-    it("[negative] unable to set equippable list of a slot of non-existing base", async () => {
-        const maxBaseId = 0xFFFFFFFF;
-        const slotId = 0;
+  it('[negative] unable to set equippable list of a slot of non-existing base', async () => {
+    const maxBaseId = 0xFFFFFFFF;
+    const slotId = 0;
 
-        const tx = setEquippableList(api, alice, maxBaseId, slotId, "All");
-        await expectTxFailure(/rmrkEquip\.BaseDoesntExist/, tx);
-    });
+    const tx = setEquippableList(api, alice, maxBaseId, slotId, 'All');
+    await expectTxFailure(/rmrkEquip\.BaseDoesntExist/, tx);
+  });
 
-    it("[negative] unable to set equippable list by a not-an-owner", async () => {
-        const slotId = 42;
+  it('[negative] unable to set equippable list by a not-an-owner', async () => {
+    const slotId = 42;
 
-        const baseId = await createBase(api, alice, 'slotpartany-base-type', 'slotpartany', [
-            {
-                "SlotPart": {
-                    id: slotId,
-                    equippable: "All",
-                    z: 1,
-                    src: "some-fallback-slot-url"
-                }
-            }
-        ]);
+    const baseId = await createBase(api, alice, 'slotpartany-base-type', 'slotpartany', [
+      {
+        'SlotPart': {
+          id: slotId,
+          equippable: 'All',
+          z: 1,
+          src: 'some-fallback-slot-url',
+        },
+      },
+    ]);
 
-        const tx = setEquippableList(api, bob, baseId, slotId, "All");
-        await expectTxFailure(/rmrkEquip\.PermissionError/, tx);
-    });
+    const tx = setEquippableList(api, bob, baseId, slotId, 'All');
+    await expectTxFailure(/rmrkEquip\.PermissionError/, tx);
+  });
 
-    it("[negative] unable to set equippable list to a fixed part", async () => {
-        const fixedPartId = 42;
+  it('[negative] unable to set equippable list to a fixed part', async () => {
+    const fixedPartId = 42;
 
-        const baseId = await createBase(api, alice, 'fixedpart-base-type', 'fixedpart', [
-            {
-                "FixedPart": {
-                    id: fixedPartId,
-                    z: 0,
-                    src: "fixed-part-url"
-                }
-            }
-        ]);
+    const baseId = await createBase(api, alice, 'fixedpart-base-type', 'fixedpart', [
+      {
+        'FixedPart': {
+          id: fixedPartId,
+          z: 0,
+          src: 'fixed-part-url',
+        },
+      },
+    ]);
 
-        const tx = setEquippableList(api, alice, baseId, fixedPartId, "All");
-        await expectTxFailure(/rmrkEquip\.NoEquippableOnFixedPart/, tx);
-    });
+    const tx = setEquippableList(api, alice, baseId, fixedPartId, 'All');
+    await expectTxFailure(/rmrkEquip\.NoEquippableOnFixedPart/, tx);
+  });
 
-    it("[negative] unable to set equippable list to non-existing slot", async () => {
-        const slotId = 777
-        const maxSlotId = 0xFFFFFFFF;
+  it('[negative] unable to set equippable list to non-existing slot', async () => {
+    const slotId = 777;
+    const maxSlotId = 0xFFFFFFFF;
 
-        const baseId = await createBase(api, alice, 'slotpartany-base-type', 'slotpartany', [
-            {
-                "SlotPart": {
-                    id: slotId,
-                    equippable: "All",
-                    z: 1,
-                    src: "some-fallback-slot-url"
-                }
-            }
-        ]);
+    const baseId = await createBase(api, alice, 'slotpartany-base-type', 'slotpartany', [
+      {
+        'SlotPart': {
+          id: slotId,
+          equippable: 'All',
+          z: 1,
+          src: 'some-fallback-slot-url',
+        },
+      },
+    ]);
 
-        const tx = setEquippableList(api, alice, baseId, maxSlotId, "All");
-        await expectTxFailure(/rmrkEquip\.PartDoesntExist/, tx);
-    })
+    const tx = setEquippableList(api, alice, baseId, maxSlotId, 'All');
+    await expectTxFailure(/rmrkEquip\.PartDoesntExist/, tx);
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/setNftProperty.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/setNftProperty.test.ts
+++ b/tests/src/rmrk/setNftProperty.test.ts
@@ -1,85 +1,85 @@
-import { getApiConnection } from "../substrate/substrate-api";
-import { NftIdTuple } from "./util/fetch";
-import { expectTxFailure } from "./util/helpers";
-import { createCollection, mintNft, sendNft, setNftProperty } from "./util/tx";
+import {getApiConnection} from '../substrate/substrate-api';
+import {NftIdTuple} from './util/fetch';
+import {expectTxFailure} from './util/helpers';
+import {createCollection, mintNft, sendNft, setNftProperty} from './util/tx';
 
-describe("integration test: set NFT property", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: set NFT property', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = "//Alice";
-    const bob = "//Bob";
+  const alice = '//Alice';
+  const bob = '//Bob';
 
-    const createTestCollection = async (issuerUri: string) => {
-        return await createCollection(
-            api,
-            issuerUri,
-            "setprop-nft-collection-metadata",
-            null,
-            "setprop"
-        );
-    };
+  const createTestCollection = async (issuerUri: string) => {
+    return await createCollection(
+      api,
+      issuerUri,
+      'setprop-nft-collection-metadata',
+      null,
+      'setprop',
+    );
+  };
 
-    it("set NFT property", async () => {
-        const ownerAlice = alice;
+  it('set NFT property', async () => {
+    const ownerAlice = alice;
 
-        const collectionId = await createTestCollection(alice);
-        const nftId = await mintNft(api, alice, ownerAlice, collectionId, "prop-nft");
+    const collectionId = await createTestCollection(alice);
+    const nftId = await mintNft(api, alice, ownerAlice, collectionId, 'prop-nft');
 
-        await setNftProperty(api, alice, collectionId, nftId, 'test-key', 'test-key-value');
-        await setNftProperty(api, alice, collectionId, nftId, 'test-key', 'updated-key-value');
-        await setNftProperty(api, alice, collectionId, nftId, 'second-test-key', 'second-test-key-value');
-    });
+    await setNftProperty(api, alice, collectionId, nftId, 'test-key', 'test-key-value');
+    await setNftProperty(api, alice, collectionId, nftId, 'test-key', 'updated-key-value');
+    await setNftProperty(api, alice, collectionId, nftId, 'second-test-key', 'second-test-key-value');
+  });
 
-    it("[negative] unable to set a property of non-existing NFT", async () => {
-        const collectionId = 0;
-        const maxNftId = 0xFFFFFFFF;
+  it('[negative] unable to set a property of non-existing NFT', async () => {
+    const collectionId = 0;
+    const maxNftId = 0xFFFFFFFF;
 
-        const tx = setNftProperty(api, alice, collectionId, maxNftId, 'test-key', 'test-value');
+    const tx = setNftProperty(api, alice, collectionId, maxNftId, 'test-key', 'test-value');
 
-        await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
+  });
 
-    it("[negative] unable to set a property by not-an-owner", async () => {
-        const ownerAlice = alice;
+  it('[negative] unable to set a property by not-an-owner', async () => {
+    const ownerAlice = alice;
 
-        const collectionId = await createTestCollection(alice);
-        const nftId = await mintNft(api, alice, ownerAlice, collectionId, "prop-nft");
+    const collectionId = await createTestCollection(alice);
+    const nftId = await mintNft(api, alice, ownerAlice, collectionId, 'prop-nft');
 
-        const tx = setNftProperty(api, bob, collectionId, nftId, 'test-key', 'test-key-value');
+    const tx = setNftProperty(api, bob, collectionId, nftId, 'test-key', 'test-key-value');
 
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    it("set a property to nested NFT", async () => {
-        const ownerAlice = alice;
+  it('set a property to nested NFT', async () => {
+    const ownerAlice = alice;
 
-        const collectionId = await createTestCollection(alice);
-        const parentNftId = await mintNft(api, alice, ownerAlice, collectionId, "prop-parent-nft");
-        const childNftId = await mintNft(api, alice, ownerAlice, collectionId, "prop-child-nft");
+    const collectionId = await createTestCollection(alice);
+    const parentNftId = await mintNft(api, alice, ownerAlice, collectionId, 'prop-parent-nft');
+    const childNftId = await mintNft(api, alice, ownerAlice, collectionId, 'prop-child-nft');
 
-        const ownerNft: NftIdTuple = [collectionId, parentNftId];
+    const ownerNft: NftIdTuple = [collectionId, parentNftId];
 
-        await sendNft(api, "sent", ownerAlice, collectionId, childNftId, ownerNft);
+    await sendNft(api, 'sent', ownerAlice, collectionId, childNftId, ownerNft);
 
-        await setNftProperty(api, alice, collectionId, childNftId, 'test-key', 'test-key-value');
-    });
+    await setNftProperty(api, alice, collectionId, childNftId, 'test-key', 'test-key-value');
+  });
 
-    it("[negative] set a property to nested NFT (by not-root-owner)", async () => {
-        const ownerAlice = alice;
+  it('[negative] set a property to nested NFT (by not-root-owner)', async () => {
+    const ownerAlice = alice;
 
-        const collectionId = await createTestCollection(alice);
-        const parentNftId = await mintNft(api, alice, ownerAlice, collectionId, "prop-parent-nft");
-        const childNftId = await mintNft(api, alice, ownerAlice, collectionId, "prop-child-nft");
+    const collectionId = await createTestCollection(alice);
+    const parentNftId = await mintNft(api, alice, ownerAlice, collectionId, 'prop-parent-nft');
+    const childNftId = await mintNft(api, alice, ownerAlice, collectionId, 'prop-child-nft');
 
-        const ownerNft: NftIdTuple = [collectionId, parentNftId];
+    const ownerNft: NftIdTuple = [collectionId, parentNftId];
 
-        await sendNft(api, "sent", ownerAlice, collectionId, childNftId, ownerNft);
+    await sendNft(api, 'sent', ownerAlice, collectionId, childNftId, ownerNft);
 
-        const tx = setNftProperty(api, bob, collectionId, childNftId, 'test-key', 'test-key-value');
+    const tx = setNftProperty(api, bob, collectionId, childNftId, 'test-key', 'test-key-value');
 
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/setResourcePriorities.test.tsdiffbeforeafterboth
--- a/tests/src/rmrk/setResourcePriorities.test.ts
+++ b/tests/src/rmrk/setResourcePriorities.test.ts
@@ -1,55 +1,55 @@
-import { getApiConnection } from '../substrate/substrate-api';
-import { expectTxFailure } from './util/helpers';
-import { mintNft, createCollection, setResourcePriorities } from './util/tx';
+import {getApiConnection} from '../substrate/substrate-api';
+import {expectTxFailure} from './util/helpers';
+import {mintNft, createCollection, setResourcePriorities} from './util/tx';
 
-describe("integration test: set NFT resource priorities", () => {
-    let api: any;
-    before(async () => { api = await getApiConnection(); });
+describe('integration test: set NFT resource priorities', () => {
+  let api: any;
+  before(async () => { api = await getApiConnection(); });
 
-    const alice = '//Alice';
-    const bob = '//Bob';
+  const alice = '//Alice';
+  const bob = '//Bob';
 
-    const createTestCollection = (issuerUri: string) => {
-        return createCollection(
-            api,
-            issuerUri,
-            'resprio-collection-metadata',
-            null,
-            'resprio'
-        );
-    };
+  const createTestCollection = (issuerUri: string) => {
+    return createCollection(
+      api,
+      issuerUri,
+      'resprio-collection-metadata',
+      null,
+      'resprio',
+    );
+  };
 
-    it("set NFT resource priorities", async () => {
-        const owner = alice;
+  it('set NFT resource priorities', async () => {
+    const owner = alice;
 
-        const collectionId = await createTestCollection(alice);
-        const nftId = await mintNft(api, alice, owner, collectionId, 'resprio-nft-metadata');
+    const collectionId = await createTestCollection(alice);
+    const nftId = await mintNft(api, alice, owner, collectionId, 'resprio-nft-metadata');
 
-        await setResourcePriorities(api, alice, collectionId, nftId, [10, 42]);
-    });
+    await setResourcePriorities(api, alice, collectionId, nftId, [10, 42]);
+  });
 
-    it("[negative] set NFT resource priorities by a not-an-owner", async () => {
-        const owner = alice;
-        const attacker = bob;
+  it('[negative] set NFT resource priorities by a not-an-owner', async () => {
+    const owner = alice;
+    const attacker = bob;
 
-        const collectionId = await createTestCollection(alice);
-        const nftId = await mintNft(api, alice, owner, collectionId, 'resprio-nft-metadata');
+    const collectionId = await createTestCollection(alice);
+    const nftId = await mintNft(api, alice, owner, collectionId, 'resprio-nft-metadata');
 
-        const tx = setResourcePriorities(api, attacker, collectionId, nftId, [10, 42]);
+    const tx = setResourcePriorities(api, attacker, collectionId, nftId, [10, 42]);
 
-        await expectTxFailure(/rmrkCore\.NoPermission/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoPermission/, tx);
+  });
 
-    it("[negative] set NFT resource priorities to non-existing NFT", async () => {
-        const owner = alice;
+  it('[negative] set NFT resource priorities to non-existing NFT', async () => {
+    const owner = alice;
 
-        const collectionId = 0;
-        const maxNftId = 0xFFFFFFFF;
+    const collectionId = 0;
+    const maxNftId = 0xFFFFFFFF;
 
-        const tx = setResourcePriorities(api, alice, collectionId, maxNftId, [10, 42]);
+    const tx = setResourcePriorities(api, alice, collectionId, maxNftId, [10, 42]);
 
-        await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
-    });
+    await expectTxFailure(/rmrkCore\.NoAvailableNftId/, tx);
+  });
 
-    after(() => { api.disconnect(); });
+  after(() => { api.disconnect(); });
 });
modifiedtests/src/rmrk/util/fetch.tsdiffbeforeafterboth
--- a/tests/src/rmrk/util/fetch.ts
+++ b/tests/src/rmrk/util/fetch.ts
@@ -1,14 +1,14 @@
-import { ApiPromise } from '@polkadot/api';
-import type { Option, Bytes } from '@polkadot/types-codec';
+import {ApiPromise} from '@polkadot/api';
+import type {Option, Bytes} from '@polkadot/types-codec';
 import type {
-    RmrkTraitsCollectionCollectionInfo as Collection,
-    RmrkTraitsNftNftInfo as Nft,
-    RmrkTraitsResourceResourceInfo as Resource,
-    RmrkTraitsBaseBaseInfo as Base,
-    RmrkTraitsPartPartType as PartType,
-    RmrkTraitsNftNftChild as NftChild,
-    RmrkTraitsTheme as Theme,
-    RmrkTraitsPropertyPropertyInfo as Property,
+  RmrkTraitsCollectionCollectionInfo as Collection,
+  RmrkTraitsNftNftInfo as Nft,
+  RmrkTraitsResourceResourceInfo as Resource,
+  RmrkTraitsBaseBaseInfo as Base,
+  RmrkTraitsPartPartType as PartType,
+  RmrkTraitsNftNftChild as NftChild,
+  RmrkTraitsTheme as Theme,
+  RmrkTraitsPropertyPropertyInfo as Property,
 } from '../../interfaces/default/types'; // '@polkadot/types/lookup';
 import '../../interfaces/augment-api';
 import '../../interfaces/augment-api-query';
@@ -17,114 +17,114 @@
 export type NftIdTuple = [number, number];
 
 export async function getCollectionsCount(api: ApiPromise): Promise<number> {
-    return (await api.rpc.rmrk.lastCollectionIdx()).toNumber();
+  return (await api.rpc.rmrk.lastCollectionIdx()).toNumber();
 }
 
 export async function getCollection(api: ApiPromise, id: number): Promise<Option<Collection>> {
-    return api.rpc.rmrk.collectionById(id);
+  return api.rpc.rmrk.collectionById(id);
 }
 
 export async function getOwnedNfts(
-    api: ApiPromise,
-    ownerUri: string,
-    collectionId: number
+  api: ApiPromise,
+  ownerUri: string,
+  collectionId: number,
 ): Promise<number[]> {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const owner = privateKey(ownerUri, Number(ss58Format));
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const owner = privateKey(ownerUri, Number(ss58Format));
 
-    return (await api.rpc.rmrk.accountTokens(owner.address, collectionId))
-        .map((value) => value.toNumber())
+  return (await api.rpc.rmrk.accountTokens(owner.address, collectionId))
+    .map((value) => value.toNumber());
 }
 
 export async function getNft(api: ApiPromise, collectionId: number, nftId: number): Promise<Option<Nft>> {
-    return api.rpc.rmrk.nftById(collectionId, nftId);
+  return api.rpc.rmrk.nftById(collectionId, nftId);
 }
 
 export async function getCollectionProperties(api: ApiPromise, collectionId: number): Promise<Property[]> {
-    return (await api.rpc.rmrk.collectionProperties(collectionId)).toArray();
+  return (await api.rpc.rmrk.collectionProperties(collectionId)).toArray();
 }
 
 export async function getNftProperties(api: ApiPromise, collectionId: number, nftId: number): Promise<Property[]> {
-    return (await api.rpc.rmrk.nftProperties(collectionId, nftId)).toArray();
+  return (await api.rpc.rmrk.nftProperties(collectionId, nftId)).toArray();
 }
 
 export async function getChildren(
-    api: ApiPromise,
-    collectionId: number,
-    nftId: number
+  api: ApiPromise,
+  collectionId: number,
+  nftId: number,
 ): Promise<NftChild[]> {
-    return (await api.rpc.rmrk.nftChildren(collectionId, nftId)).toArray();
+  return (await api.rpc.rmrk.nftChildren(collectionId, nftId)).toArray();
 }
 
 export async function getBase(api: ApiPromise, baseId: number): Promise<Option<Base>> {
-    return api.rpc.rmrk.base(baseId);
+  return api.rpc.rmrk.base(baseId);
 }
 
 export async function getParts(api: ApiPromise, baseId: number): Promise<PartType[]> {
-    return (await api.rpc.rmrk.baseParts(baseId)).toArray();
+  return (await api.rpc.rmrk.baseParts(baseId)).toArray();
 }
 
 export async function getEquippableList(
-    api: ApiPromise,
-    baseId: number,
-    slotId: number
-): Promise<"All" | "Empty" | { "Custom": number[] } | null> {
-    const parts = await getParts(api, baseId);
+  api: ApiPromise,
+  baseId: number,
+  slotId: number,
+): Promise<'All' | 'Empty' | { 'Custom': number[] } | null> {
+  const parts = await getParts(api, baseId);
 
-    const part = parts.find((part) => {
-        if (part.isSlotPart) {
-            return part.asSlotPart.id.toNumber() === slotId;
-        } else {
-            return false;
-        }
-    });
+  const part = parts.find((part) => {
+    if (part.isSlotPart) {
+      return part.asSlotPart.id.toNumber() === slotId;
+    } else {
+      return false;
+    }
+  });
 
-    if (part) {
-        const slot = part.asSlotPart;
-        if (slot.equippable.isCustom) {
-            return {
-                "Custom": slot.equippable.asCustom
-                            .toArray()
-                            .map((collectionId) => collectionId.toNumber())
-            };
-        } else if (slot.equippable.isAll) {
-            return "All";
-        } else {
-            return "Empty";
-        }
+  if (part) {
+    const slot = part.asSlotPart;
+    if (slot.equippable.isCustom) {
+      return {
+        'Custom': slot.equippable.asCustom
+          .toArray()
+          .map((collectionId) => collectionId.toNumber()),
+      };
+    } else if (slot.equippable.isAll) {
+      return 'All';
     } else {
-        return null;
+      return 'Empty';
     }
+  } else {
+    return null;
+  }
 }
 
 export async function getResourcePriority(
-    api: ApiPromise,
-    collectionId: number,
-    nftId: number,
-    resourceId: number,
+  api: ApiPromise,
+  collectionId: number,
+  nftId: number,
+  resourceId: number,
 ): Promise<number> {
-    return (await api.rpc.rmrk.nftResourcePriority(collectionId, nftId, resourceId))
-        .unwrap().toNumber();
+  return (await api.rpc.rmrk.nftResourcePriority(collectionId, nftId, resourceId))
+    .unwrap().toNumber();
 }
 
 export async function getThemeNames(api: ApiPromise, baseId: number): Promise<string[]> {
-    return (await api.rpc.rmrk.themeNames(baseId))
-        .map((name) => name.toUtf8());
+  return (await api.rpc.rmrk.themeNames(baseId))
+    .map((name) => name.toUtf8());
 }
 
 export async function getTheme(
-    api: ApiPromise,
-    baseId: number,
-    themeName: string,
-    keys: string[] | null = null
+  api: ApiPromise,
+  baseId: number,
+  themeName: string,
+  keys: string[] | null = null,
 ): Promise<Option<Theme>> {
-    return api.rpc.rmrk.themes(baseId, themeName, keys);
+  return api.rpc.rmrk.themes(baseId, themeName, keys);
 }
 
 export async function getResources(
   api: ApiPromise,
   collectionId: number,
-  nftId: number
+  nftId: number,
 ): Promise<Resource[]> {
   return (await api.rpc.rmrk.nftResources(collectionId, nftId)).toArray();
 }
modifiedtests/src/rmrk/util/helpers.tsdiffbeforeafterboth
--- a/tests/src/rmrk/util/helpers.ts
+++ b/tests/src/rmrk/util/helpers.ts
@@ -1,13 +1,13 @@
-import { ApiPromise } from "@polkadot/api";
+import {ApiPromise} from '@polkadot/api';
 import {
-    RmrkTraitsNftAccountIdOrCollectionNftTuple as NftOwner,
-    RmrkTraitsPropertyPropertyInfo as Property,
-    RmrkTraitsResourceResourceInfo as ResourceInfo,
-} from "@polkadot/types/lookup";
-import type { EventRecord } from '@polkadot/types/interfaces';
-import type { GenericEventData } from '@polkadot/types';
-import privateKey from "../../substrate/privateKey";
-import { NftIdTuple, getChildren, getOwnedNfts, getCollectionProperties, getNftProperties, getResources } from './fetch';
+  RmrkTraitsNftAccountIdOrCollectionNftTuple as NftOwner,
+  RmrkTraitsPropertyPropertyInfo as Property,
+  RmrkTraitsResourceResourceInfo as ResourceInfo,
+} from '@polkadot/types/lookup';
+import type {EventRecord} from '@polkadot/types/interfaces';
+import type {GenericEventData} from '@polkadot/types';
+import privateKey from '../../substrate/privateKey';
+import {NftIdTuple, getChildren, getOwnedNfts, getCollectionProperties, getNftProperties, getResources} from './fetch';
 import chaiAsPromised from 'chai-as-promised';
 import chai from 'chai';
 
@@ -20,188 +20,188 @@
 }
 
 export function makeNftOwner(api: ApiPromise, owner: string | NftIdTuple): NftOwner {
-    const isNftSending = (typeof owner !== "string");
+  const isNftSending = (typeof owner !== 'string');
 
-    if (isNftSending) {
-        return api.createType("RmrkTraitsNftAccountIdOrCollectionNftTuple", {
-            "CollectionAndNftTuple": owner
-        });
-    } else {
-        const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-        return api.createType("RmrkTraitsNftAccountIdOrCollectionNftTuple", {
-          AccountId: privateKey(owner, Number(ss58Format)).address,
-        });
-    }
+  if (isNftSending) {
+    return api.createType('RmrkTraitsNftAccountIdOrCollectionNftTuple', {
+      'CollectionAndNftTuple': owner,
+    });
+  } else {
+    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+    return api.createType('RmrkTraitsNftAccountIdOrCollectionNftTuple', {
+      AccountId: privateKey(owner, Number(ss58Format)).address,
+    });
+  }
 }
 
 export async function isNftOwnedBy(
-    api: ApiPromise,
-    owner: string | NftIdTuple,
-    collectionId: number,
-    nftId: number
+  api: ApiPromise,
+  owner: string | NftIdTuple,
+  collectionId: number,
+  nftId: number,
 ): Promise<boolean> {
-    if (typeof owner === "string") {
-        return (await getOwnedNfts(api, owner, collectionId))
-            .find(ownedNftId => {
-                return ownedNftId === nftId;
-            }) !== undefined;
-    } else {
-        return (await getChildren(api, owner[0], owner[1]))
-            .find(child => {
-                return collectionId === child.collectionId.toNumber()
+  if (typeof owner === 'string') {
+    return (await getOwnedNfts(api, owner, collectionId))
+      .find(ownedNftId => {
+        return ownedNftId === nftId;
+      }) !== undefined;
+  } else {
+    return (await getChildren(api, owner[0], owner[1]))
+      .find(child => {
+        return collectionId === child.collectionId.toNumber()
                     && nftId === child.nftId.toNumber();
-            }) !== undefined;
-    }
+      }) !== undefined;
+  }
 }
 
 export function isPropertyExists(
-    key: string,
-    value: string,
-    props: Property[]
+  key: string,
+  value: string,
+  props: Property[],
 ): boolean {
-    let isPropFound = false;
-    for (var i = 0; i < props.length && !isPropFound; i++) {
-        const fetchedProp = props[i];
+  let isPropFound = false;
+  for (let i = 0; i < props.length && !isPropFound; i++) {
+    const fetchedProp = props[i];
 
-        isPropFound = fetchedProp.key.eq(key)
+    isPropFound = fetchedProp.key.eq(key)
                     && fetchedProp.value.eq(value);
-    }
+  }
 
-    return isPropFound;
+  return isPropFound;
 }
 
 export async function isCollectionPropertyExists(
-    api: ApiPromise,
-    collectionId: number,
-    key: string,
-    value: string
+  api: ApiPromise,
+  collectionId: number,
+  key: string,
+  value: string,
 ): Promise<boolean> {
-    const fetchedProps = await getCollectionProperties(api, collectionId);
-    return isPropertyExists(key, value, fetchedProps);
+  const fetchedProps = await getCollectionProperties(api, collectionId);
+  return isPropertyExists(key, value, fetchedProps);
 }
 
 export async function isNftPropertyExists(
-    api: ApiPromise,
-    collectionId: number,
-    nftId: number,
-    key: string,
-    value: string
+  api: ApiPromise,
+  collectionId: number,
+  nftId: number,
+  key: string,
+  value: string,
 ): Promise<boolean> {
-    const fetchedProps = await getNftProperties(api, collectionId, nftId);
-    return isPropertyExists(key, value, fetchedProps);
+  const fetchedProps = await getNftProperties(api, collectionId, nftId);
+  return isPropertyExists(key, value, fetchedProps);
 }
 
 export async function isNftChildOfAnother(
-    api: ApiPromise,
-    collectionId: number,
-    nftId: number,
-    parentNft: NftIdTuple
+  api: ApiPromise,
+  collectionId: number,
+  nftId: number,
+  parentNft: NftIdTuple,
 ): Promise<boolean> {
-    return (await getChildren(api, parentNft[0], parentNft[1]))
-        .find((childNft) => {
-            return childNft.collectionId.toNumber() === collectionId
+  return (await getChildren(api, parentNft[0], parentNft[1]))
+    .find((childNft) => {
+      return childNft.collectionId.toNumber() === collectionId
                 && childNft.nftId.toNumber() === nftId;
-        }) !== undefined;
+    }) !== undefined;
 }
 
 export function isTxResultSuccess(events: EventRecord[]): boolean {
-    let success = false;
+  let success = false;
 
-    events.forEach(({event: {data, method, section}}) => {
-        if (method == 'ExtrinsicSuccess') {
-            success = true;
-        }
-    });
+  events.forEach(({event: {data, method, section}}) => {
+    if (method == 'ExtrinsicSuccess') {
+      success = true;
+    }
+  });
 
-    return success;
+  return success;
 }
 
 export async function expectTxFailure(expectedError: RegExp, promise: Promise<any>) {
-    await expect(promise).to.be.rejectedWith(expectedError);
+  await expect(promise).to.be.rejectedWith(expectedError);
 }
 
 export function extractTxResult<T>(
-    events: EventRecord[],
-    expectSection: string,
-    expectMethod: string,
-    extractAction: (data: any) => T
+  events: EventRecord[],
+  expectSection: string,
+  expectMethod: string,
+  extractAction: (data: any) => T,
 ): TxResult<T> {
-    let success = false;
-    let successData = null;
-    events.forEach(({event: {data, method, section}}) => {
-        if (method == 'ExtrinsicSuccess') {
-            success = true;
-        } else if ((expectSection == section) && (expectMethod == method)) {
-            successData = extractAction(data);
-        }
-    });
-    const result: TxResult<T> = {
-        success,
-        successData,
-    };
-    return result;
+  let success = false;
+  let successData = null;
+  events.forEach(({event: {data, method, section}}) => {
+    if (method == 'ExtrinsicSuccess') {
+      success = true;
+    } else if ((expectSection == section) && (expectMethod == method)) {
+      successData = extractAction(data);
+    }
+  });
+  const result: TxResult<T> = {
+    success,
+    successData,
+  };
+  return result;
 }
 
 export function extractRmrkCoreTxResult<T>(
-    events: EventRecord[],
-    expectMethod: string,
-    extractAction: (data: GenericEventData) => T
+  events: EventRecord[],
+  expectMethod: string,
+  extractAction: (data: GenericEventData) => T,
 ): TxResult<T> {
-    return extractTxResult(events, 'rmrkCore', expectMethod, extractAction);
+  return extractTxResult(events, 'rmrkCore', expectMethod, extractAction);
 }
 
 export function extractRmrkEquipTxResult<T>(
-    events: EventRecord[],
-    expectMethod: string,
-    extractAction: (data: GenericEventData) => T
+  events: EventRecord[],
+  expectMethod: string,
+  extractAction: (data: GenericEventData) => T,
 ): TxResult<T> {
-    return extractTxResult(events, 'rmrkEquip', expectMethod, extractAction);
+  return extractTxResult(events, 'rmrkEquip', expectMethod, extractAction);
 }
 
 export async function findResourceById(
-    api: ApiPromise,
-    collectionId: number,
-    nftId: number,
-    resourceId: number,
+  api: ApiPromise,
+  collectionId: number,
+  nftId: number,
+  resourceId: number,
 ): Promise<ResourceInfo> {
-    const resources = await getResources(api, collectionId, nftId);
+  const resources = await getResources(api, collectionId, nftId);
 
-    let resource = null;
+  let resource = null;
 
-    for (let i = 0; i < resources.length; i++) {
-        const res = resources[i];
+  for (let i = 0; i < resources.length; i++) {
+    const res = resources[i];
 
-        if (res.id.eq(resourceId)) {
-            resource = res;
-            break;
-        }
+    if (res.id.eq(resourceId)) {
+      resource = res;
+      break;
     }
+  }
 
-    return resource!;
+  return resource!;
 }
 
 export async function getResourceById(
-    api: ApiPromise,
-    collectionId: number,
-    nftId: number,
-    resourceId: number,
+  api: ApiPromise,
+  collectionId: number,
+  nftId: number,
+  resourceId: number,
 ): Promise<ResourceInfo> {
-    const resource = await findResourceById(
-        api,
-        collectionId,
-        nftId,
-        resourceId,
-    );
+  const resource = await findResourceById(
+    api,
+    collectionId,
+    nftId,
+    resourceId,
+  );
 
-    expect(resource !== null, 'Error: resource was not found').to.be.true;
+  expect(resource !== null, 'Error: resource was not found').to.be.true;
 
-    return resource!;
+  return resource!;
 }
 
 export function checkResourceStatus(
-    resource: ResourceInfo,
-    expectedStatus: "pending" | "added"
+  resource: ResourceInfo,
+  expectedStatus: 'pending' | 'added',
 ) {
-    expect(resource.pending.isTrue, `Error: added resource should be ${expectedStatus}`)
-          .to.be.equal(expectedStatus === "pending");
+  expect(resource.pending.isTrue, `Error: added resource should be ${expectedStatus}`)
+    .to.be.equal(expectedStatus === 'pending');
 }
modifiedtests/src/rmrk/util/tx.tsdiffbeforeafterboth
--- a/tests/src/rmrk/util/tx.ts
+++ b/tests/src/rmrk/util/tx.ts
@@ -1,16 +1,16 @@
-import { ApiPromise } from "@polkadot/api";
-import { Bytes, Option, u32, Vec } from '@polkadot/types-codec';
+import {ApiPromise} from '@polkadot/api';
+import {Bytes, Option, u32, Vec} from '@polkadot/types-codec';
 import {
   RmrkTraitsNftAccountIdOrCollectionNftTuple as NftOwner, RmrkTraitsPartEquippableList as EquippableList,
   RmrkTraitsPartPartType as PartType, RmrkTraitsResourceBasicResource as BasicResource,
-  RmrkTraitsResourceComposableResource as ComposableResource, RmrkTraitsResourceResourceInfo as ResourceInfo, RmrkTraitsResourceSlotResource as SlotResource, RmrkTraitsTheme as Theme
-} from "@polkadot/types/lookup";
-import { IKeyringPair } from "@polkadot/types/types";
+  RmrkTraitsResourceComposableResource as ComposableResource, RmrkTraitsResourceResourceInfo as ResourceInfo, RmrkTraitsResourceSlotResource as SlotResource, RmrkTraitsTheme as Theme,
+} from '@polkadot/types/lookup';
+import {IKeyringPair} from '@polkadot/types/types';
 import chai from 'chai';
 import chaiAsPromised from 'chai-as-promised';
 import '../../interfaces/augment-api';
-import privateKey from "../../substrate/privateKey";
-import { executeTransaction } from "../../substrate/substrate-api";
+import privateKey from '../../substrate/privateKey';
+import {executeTransaction} from '../../substrate/substrate-api';
 import {
   getBase,
   getCollection,
@@ -21,315 +21,307 @@
   getResources, 
   getResourcePriority, 
   getTheme,
-  NftIdTuple
-} from "./fetch";
+  NftIdTuple,
+} from './fetch';
 import {
   extractRmrkCoreTxResult,
   extractRmrkEquipTxResult, isCollectionPropertyExists, isNftOwnedBy, isNftPropertyExists, isTxResultSuccess, makeNftOwner,
-  findResourceById, getResourceById, checkResourceStatus
-} from "./helpers";
+  findResourceById, getResourceById, checkResourceStatus,
+} from './helpers';
 
 chai.use(chaiAsPromised);
 const expect = chai.expect;
 
 export async function createCollection(
-    api: ApiPromise,
-    issuerUri: string,
-    metadata: string,
-    max: number | null,
-    symbol: string
-  ): Promise<number> {
-    let collectionId = 0;
+  api: ApiPromise,
+  issuerUri: string,
+  metadata: string,
+  max: number | null,
+  symbol: string,
+): Promise<number> {
+  let collectionId = 0;
 
-    const oldCollectionCount = await getCollectionsCount(api);
-    const maxOptional = max ? max.toString() : null;
-    const ss58Format = (api.registry.getChainProperties())!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    const tx = api.tx.rmrkCore.createCollection(metadata, maxOptional, symbol);
-    const events = await executeTransaction(api, issuer, tx);
+  const oldCollectionCount = await getCollectionsCount(api);
+  const maxOptional = max ? max.toString() : null;
+  const ss58Format = (api.registry.getChainProperties())!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const tx = api.tx.rmrkCore.createCollection(metadata, maxOptional, symbol);
+  const events = await executeTransaction(api, issuer, tx);
 
-    const collectionResult = extractRmrkCoreTxResult(
-        events, 'CollectionCreated', (data) => {
-            return parseInt(data[1].toString(), 10)
-        }
-    );
-    expect(collectionResult.success, 'Error: unable to create a collection').to.be.true;
+  const collectionResult = extractRmrkCoreTxResult(events, 'CollectionCreated', (data) => {
+    return parseInt(data[1].toString(), 10);
+  });
+  expect(collectionResult.success, 'Error: unable to create a collection').to.be.true;
 
-    collectionId = collectionResult.successData!;
+  collectionId = collectionResult.successData!;
 
-    const newCollectionCount = await getCollectionsCount(api);
-    const collectionOption = await getCollection(api, collectionId);
+  const newCollectionCount = await getCollectionsCount(api);
+  const collectionOption = await getCollection(api, collectionId);
 
-    expect(newCollectionCount).to.be.equal(oldCollectionCount + 1, 'Error: NFT collection count should increase');
-    expect(collectionOption.isSome, 'Error: unable to fetch created NFT collection').to.be.true;
+  expect(newCollectionCount).to.be.equal(oldCollectionCount + 1, 'Error: NFT collection count should increase');
+  expect(collectionOption.isSome, 'Error: unable to fetch created NFT collection').to.be.true;
 
-    const collection = collectionOption.unwrap();
+  const collection = collectionOption.unwrap();
 
-    expect(collection.metadata.toUtf8()).to.be.equal(metadata, "Error: Invalid NFT collection metadata");
-    expect(collection.max.isSome).to.be.equal(max !== null, "Error: Invalid NFT collection max");
+  expect(collection.metadata.toUtf8()).to.be.equal(metadata, 'Error: Invalid NFT collection metadata');
+  expect(collection.max.isSome).to.be.equal(max !== null, 'Error: Invalid NFT collection max');
 
-    if (collection.max.isSome) {
-        expect(collection.max.unwrap().toNumber()).to.be.equal(max, "Error: Invalid NFT collection max");
-    }
-    expect(collection.symbol.toUtf8()).to.be.equal(symbol, "Error: Invalid NFT collection's symbol");
-    expect(collection.nftsCount.toNumber()).to.be.equal(0, "Error: NFT collection shoudn't have any tokens");
-    expect(collection.issuer.toString()).to.be.equal(issuer.address, "Error: Invalid NFT collection issuer");
+  if (collection.max.isSome) {
+    expect(collection.max.unwrap().toNumber()).to.be.equal(max, 'Error: Invalid NFT collection max');
+  }
+  expect(collection.symbol.toUtf8()).to.be.equal(symbol, "Error: Invalid NFT collection's symbol");
+  expect(collection.nftsCount.toNumber()).to.be.equal(0, "Error: NFT collection shoudn't have any tokens");
+  expect(collection.issuer.toString()).to.be.equal(issuer.address, 'Error: Invalid NFT collection issuer');
 
-    return collectionId;
+  return collectionId;
 }
 
 export async function changeIssuer(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: number,
-    newIssuer: string
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: number,
+  newIssuer: string,
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const alice = privateKey(issuerUri, Number(ss58Format));
-    const bob = privateKey(newIssuer, Number(ss58Format));
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const alice = privateKey(issuerUri, Number(ss58Format));
+  const bob = privateKey(newIssuer, Number(ss58Format));
 
-    // This is only needed when RMRK uses `uniques` pallet by Parity
-    // let tx = api.tx.uniques.setAcceptOwnership(
-    //     api.createType('Option<u32>', collectionId)
-    // );
-    // let events = await executeTransaction(api, bob, tx);
-    // expect(isTxResultSuccess(events), 'Error: Unable to accept ownership').to.be.true;
+  // This is only needed when RMRK uses `uniques` pallet by Parity
+  // let tx = api.tx.uniques.setAcceptOwnership(
+  //     api.createType('Option<u32>', collectionId)
+  // );
+  // let events = await executeTransaction(api, bob, tx);
+  // expect(isTxResultSuccess(events), 'Error: Unable to accept ownership').to.be.true;
 
-    const tx = api.tx.rmrkCore.changeCollectionIssuer(collectionId, bob.address);
-    const events = await executeTransaction(api, alice, tx);
-    const changeIssuerResult = extractRmrkCoreTxResult(
-        events, 'IssuerChanged', (data) => {
-            return parseInt(data[2].toString(), 10);
-        }
-    );
-    expect(changeIssuerResult.success, 'Error: Unable to change NFT collection issuer').to.be.true;
-    expect(changeIssuerResult.successData!, 'Error: Invalid collection id after changing the issuer')
-        .to.be.eq(collectionId);
+  const tx = api.tx.rmrkCore.changeCollectionIssuer(collectionId, bob.address);
+  const events = await executeTransaction(api, alice, tx);
+  const changeIssuerResult = extractRmrkCoreTxResult(events, 'IssuerChanged', (data) => {
+    return parseInt(data[2].toString(), 10);
+  });
+  expect(changeIssuerResult.success, 'Error: Unable to change NFT collection issuer').to.be.true;
+  expect(changeIssuerResult.successData!, 'Error: Invalid collection id after changing the issuer')
+    .to.be.eq(collectionId);
 
-    await getCollection(api, collectionId).then((collectionOption) => {
-        const collection = collectionOption.unwrap();
-        expect(collection.issuer.toString())
-            .to.be.deep.eq(bob.address, 'Error: Invalid NFT collection issuer');
-    });
+  await getCollection(api, collectionId).then((collectionOption) => {
+    const collection = collectionOption.unwrap();
+    expect(collection.issuer.toString())
+      .to.be.deep.eq(bob.address, 'Error: Invalid NFT collection issuer');
+  });
 }
 
 export async function deleteCollection(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: string
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: string,
 ): Promise<number> {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    const tx = api.tx.rmrkCore.destroyCollection(collectionId);
-    const events = await executeTransaction(api, issuer, tx);
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const tx = api.tx.rmrkCore.destroyCollection(collectionId);
+  const events = await executeTransaction(api, issuer, tx);
 
-    const collectionTxResult = extractRmrkCoreTxResult(
-        events,
-        "CollectionDestroy",
-        (data) => {
-        return parseInt(data[1].toString(), 10);
-        }
-    );
-    expect(collectionTxResult.success, 'Error: Unable to delete NFT collection').to.be.true;
+  const collectionTxResult = extractRmrkCoreTxResult(
+    events,
+    'CollectionDestroy',
+    (data) => {
+      return parseInt(data[1].toString(), 10);
+    },
+  );
+  expect(collectionTxResult.success, 'Error: Unable to delete NFT collection').to.be.true;
 
-    const collection = await getCollection(
-        api,
-        parseInt(collectionId, 10)
-    );
-    expect(collection.isEmpty, 'Error: NFT collection should be deleted').to.be.true;
+  const collection = await getCollection(
+    api,
+    parseInt(collectionId, 10),
+  );
+  expect(collection.isEmpty, 'Error: NFT collection should be deleted').to.be.true;
 
-    return 0;
+  return 0;
 }
 
 export async function negativeDeleteCollection(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: string
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: string,
 ): Promise<number> {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    const tx = api.tx.rmrkCore.destroyCollection(collectionId);
-    await expect(executeTransaction(api, issuer, tx)).to.be.rejected;
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const tx = api.tx.rmrkCore.destroyCollection(collectionId);
+  await expect(executeTransaction(api, issuer, tx)).to.be.rejected;
 
-    return 0;
+  return 0;
 }
 
 export async function setNftProperty(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: number,
-    nftId: number,
-    key: string,
-    value: string
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: number,
+  nftId: number,
+  key: string,
+  value: string,
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    const nftIdOpt = api.createType('Option<u32>', nftId);
-    const tx = api.tx.rmrkCore.setProperty(
-        collectionId,
-        nftIdOpt,
-        key,
-        value
-    );
-    const events = await executeTransaction(api, issuer, tx);
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const nftIdOpt = api.createType('Option<u32>', nftId);
+  const tx = api.tx.rmrkCore.setProperty(
+    collectionId,
+    nftIdOpt,
+    key,
+    value,
+  );
+  const events = await executeTransaction(api, issuer, tx);
 
-    const propResult = extractRmrkCoreTxResult(
-        events, 'PropertySet', (data) => {
-            return {
-                collectionId: parseInt(data[0].toString(), 10),
-                nftId: data[1] as Option<u32>,
-                key: data[2] as Bytes,
-                value: data[3] as Bytes
-            };
-        }
-    );
+  const propResult = extractRmrkCoreTxResult(events, 'PropertySet', (data) => {
+    return {
+      collectionId: parseInt(data[0].toString(), 10),
+      nftId: data[1] as Option<u32>,
+      key: data[2] as Bytes,
+      value: data[3] as Bytes,
+    };
+  });
 
-    expect(propResult.success, 'Error: Unable to set NFT property').to.be.true;
-    const eventData = propResult.successData!;
-    const eventDescription = 'from set NFT property event';
+  expect(propResult.success, 'Error: Unable to set NFT property').to.be.true;
+  const eventData = propResult.successData!;
+  const eventDescription = 'from set NFT property event';
 
-    expect(eventData.collectionId, 'Error: Invalid collection ID ' + eventDescription)
-        .to.be.equal(collectionId);
+  expect(eventData.collectionId, 'Error: Invalid collection ID ' + eventDescription)
+    .to.be.equal(collectionId);
 
-    expect(eventData.nftId.eq(nftIdOpt), 'Error: Invalid NFT ID ' + eventDescription)
-        .to.be.true;
+  expect(eventData.nftId.eq(nftIdOpt), 'Error: Invalid NFT ID ' + eventDescription)
+    .to.be.true;
 
-    expect(eventData.key.eq(key), 'Error: Invalid property key ' + eventDescription)
-        .to.be.true;
+  expect(eventData.key.eq(key), 'Error: Invalid property key ' + eventDescription)
+    .to.be.true;
 
-    expect(eventData.value.eq(value), 'Error: Invalid property value ' + eventDescription)
-        .to.be.true;
+  expect(eventData.value.eq(value), 'Error: Invalid property value ' + eventDescription)
+    .to.be.true;
 
-    expect(
-        await isNftPropertyExists(api, collectionId, nftId, key, value),
-        'Error: NFT property is not found'
-    ).to.be.true;
+  expect(
+    await isNftPropertyExists(api, collectionId, nftId, key, value),
+    'Error: NFT property is not found',
+  ).to.be.true;
 }
 
 export async function mintNft(
-    api: ApiPromise,
-    issuerUri: string,
-    ownerUri: string | null,
-    collectionId: number,
-    metadata: string,
-    recipientUri: string | null = null,
-    royalty: number | null = null,
-    transferable: boolean = true,
-    resources: {basic?: any, composable?: any, slot?: any}[] | null = null
+  api: ApiPromise,
+  issuerUri: string,
+  ownerUri: string | null,
+  collectionId: number,
+  metadata: string,
+  recipientUri: string | null = null,
+  royalty: number | null = null,
+  transferable = true,
+  resources: {basic?: any, composable?: any, slot?: any}[] | null = null,
 ): Promise<number> {
-    let nftId = 0;
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    const owner = ownerUri ? privateKey(ownerUri, Number(ss58Format)).address : null;
-    const recipient = recipientUri ? privateKey(recipientUri, Number(ss58Format)).address : null;
-    const royaltyOptional = royalty ? royalty.toString() : null;
+  let nftId = 0;
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const owner = ownerUri ? privateKey(ownerUri, Number(ss58Format)).address : null;
+  const recipient = recipientUri ? privateKey(recipientUri, Number(ss58Format)).address : null;
+  const royaltyOptional = royalty ? royalty.toString() : null;
 
-    const actualOwnerUri = ownerUri ? ownerUri : issuerUri;
-    const actualOwnerAddress = ownerUri ? owner : issuer.address;
+  const actualOwnerUri = ownerUri ? ownerUri : issuerUri;
+  const actualOwnerAddress = ownerUri ? owner : issuer.address;
 
-    const collectionOpt = await getCollection(api, collectionId);
+  const collectionOpt = await getCollection(api, collectionId);
 
-    const tx = api.tx.rmrkCore.mintNft(
-        owner,
-        collectionId,
-        recipient,
-        royaltyOptional,
-        metadata,
-        transferable,
-        resources,
-    );
+  const tx = api.tx.rmrkCore.mintNft(
+    owner,
+    collectionId,
+    recipient,
+    royaltyOptional,
+    metadata,
+    transferable,
+    resources,
+  );
 
-    const events = await executeTransaction(api, issuer, tx);
-    const nftResult = extractRmrkCoreTxResult(
-        events, 'NftMinted', (data) => {
-            return parseInt(data[2].toString(), 10);
-        }
-    );
+  const events = await executeTransaction(api, issuer, tx);
+  const nftResult = extractRmrkCoreTxResult(events, 'NftMinted', (data) => {
+    return parseInt(data[2].toString(), 10);
+  });
 
-    expect(nftResult.success, 'Error: Unable to mint NFT').to.be.true;
+  expect(nftResult.success, 'Error: Unable to mint NFT').to.be.true;
 
-    const newCollectionNftsCount = (await getCollection(api, collectionId))
-        .unwrap()
-        .nftsCount
-        .toNumber();
+  const newCollectionNftsCount = (await getCollection(api, collectionId))
+    .unwrap()
+    .nftsCount
+    .toNumber();
 
-    const oldCollectionNftsCount = collectionOpt
-      .unwrap()
-      .nftsCount.toNumber();
+  const oldCollectionNftsCount = collectionOpt
+    .unwrap()
+    .nftsCount.toNumber();
 
-    expect(newCollectionNftsCount, 'Error: NFTs count should increase')
-        .to.be.equal(oldCollectionNftsCount + 1);
+  expect(newCollectionNftsCount, 'Error: NFTs count should increase')
+    .to.be.equal(oldCollectionNftsCount + 1);
 
-    nftId = nftResult.successData!;
+  nftId = nftResult.successData!;
 
-    const nftOption = await getNft(api, collectionId, nftId);
+  const nftOption = await getNft(api, collectionId, nftId);
 
-    expect(nftOption.isSome, 'Error: Unable to fetch created NFT').to.be.true;
+  expect(nftOption.isSome, 'Error: Unable to fetch created NFT').to.be.true;
 
-    const nft = nftOption.unwrap();
+  const nft = nftOption.unwrap();
 
-    expect(nft.owner.isAccountId, 'Error: NFT owner should be some user').to.be.true;
-    expect(nft.owner.asAccountId.toString()).to.be.equal(actualOwnerAddress, "Error: Invalid NFT owner");
+  expect(nft.owner.isAccountId, 'Error: NFT owner should be some user').to.be.true;
+  expect(nft.owner.asAccountId.toString()).to.be.equal(actualOwnerAddress, 'Error: Invalid NFT owner');
 
-    const isOwnedInUniques = await isNftOwnedBy(api, actualOwnerUri, collectionId, nftId);
-    expect(isOwnedInUniques, `Error: created NFT is not actually owned by ${ownerUri}`)
-        .to.be.true;
+  const isOwnedInUniques = await isNftOwnedBy(api, actualOwnerUri, collectionId, nftId);
+  expect(isOwnedInUniques, `Error: created NFT is not actually owned by ${ownerUri}`)
+    .to.be.true;
 
-    if (recipient === null && royalty === null) {
-        expect(nft.royalty.isNone, 'Error: Invalid NFT recipient')
-            .to.be.true;
-    } else {
-        expect(nft.royalty.isSome, 'Error: NFT royalty not found')
-            .to.be.true;
+  if (recipient === null && royalty === null) {
+    expect(nft.royalty.isNone, 'Error: Invalid NFT recipient')
+      .to.be.true;
+  } else {
+    expect(nft.royalty.isSome, 'Error: NFT royalty not found')
+      .to.be.true;
 
-        const nftRoyalty = nft.royalty.unwrap();
-        expect(nftRoyalty.recipient.eq(recipient), 'Error: Invalid NFT recipient')
-            .to.be.true;
+    const nftRoyalty = nft.royalty.unwrap();
+    expect(nftRoyalty.recipient.eq(recipient), 'Error: Invalid NFT recipient')
+      .to.be.true;
 
-        expect(nftRoyalty.amount.eq(royalty), 'Error: Invalid NFT royalty')
-            .to.be.true;
-    }
+    expect(nftRoyalty.amount.eq(royalty), 'Error: Invalid NFT royalty')
+      .to.be.true;
+  }
 
-    expect(nft.metadata.toUtf8()).to.be.equal(metadata, "Error: Invalid NFT metadata");
+  expect(nft.metadata.toUtf8()).to.be.equal(metadata, 'Error: Invalid NFT metadata');
     
-    const nftResources = await getResources(api, collectionId, nftId);
-    if (resources == null) {
-        expect(nftResources, 'Error: Invalid NFT resources').to.be.empty;
-    } else {
-        expect(nftResources.length).to.be.equal(resources.length);
+  const nftResources = await getResources(api, collectionId, nftId);
+  if (resources == null) {
+    expect(nftResources, 'Error: Invalid NFT resources').to.be.empty;
+  } else {
+    expect(nftResources.length).to.be.equal(resources.length);
 
-        for (let i = 0; i < resources.length; i++) {
-            let successFindingResource = false;
-            const resource = resources[i];
-            // try to find the matching resource from the query
-            for (let j = 0; j < nftResources.length && !successFindingResource; j++) {
-                const nftResourceData = nftResources[j].toHuman();
-                expect(nftResourceData.hasOwnProperty('resource'), `Error: Corrupted resource data on resource #${i}`);
-                const nftResource = nftResourceData.resource!;
+    for (let i = 0; i < resources.length; i++) {
+      let successFindingResource = false;
+      const resource = resources[i];
+      // try to find the matching resource from the query
+      for (let j = 0; j < nftResources.length && !successFindingResource; j++) {
+        const nftResourceData = nftResources[j].toHuman();
+        expect(nftResourceData.hasOwnProperty('resource'), `Error: Corrupted resource data on resource #${i}`);
+        const nftResource = nftResourceData.resource!;
                 type NftResourceKey = keyof typeof nftResource;
 
                 let typedResource = null;
                 let typedNftResource = null;
 
-                if (resource.basic && nftResource.hasOwnProperty("Basic")) {
-                    typedResource = resource.basic!;
-                    typedNftResource = nftResource["Basic" as NftResourceKey]!;
-                } else if (resource.composable && nftResource.hasOwnProperty("Composable")) {
-                    typedResource = resource.composable!;
-                    typedNftResource = nftResource["Composable" as NftResourceKey]! as any;
-                    if (typedResource.parts != undefined && typedResource.parts.toString() != typedNftResource.parts.toString()
+                if (resource.basic && nftResource.hasOwnProperty('Basic')) {
+                  typedResource = resource.basic!;
+                  typedNftResource = nftResource['Basic' as NftResourceKey]!;
+                } else if (resource.composable && nftResource.hasOwnProperty('Composable')) {
+                  typedResource = resource.composable!;
+                  typedNftResource = nftResource['Composable' as NftResourceKey]! as any;
+                  if (typedResource.parts != undefined && typedResource.parts.toString() != typedNftResource.parts.toString()
                         || typedResource.base != typedNftResource.base && typedResource.base != undefined) {
-                        continue;
-                    }
-                } else if (resource.slot && nftResource.hasOwnProperty("Slot")) {
-                    typedResource = resource.slot!;
-                    typedNftResource = nftResource["Slot" as NftResourceKey]! as any;
-                    if (typedResource.slot != typedNftResource.slot && typedResource.slot != undefined 
+                    continue;
+                  }
+                } else if (resource.slot && nftResource.hasOwnProperty('Slot')) {
+                  typedResource = resource.slot!;
+                  typedNftResource = nftResource['Slot' as NftResourceKey]! as any;
+                  if (typedResource.slot != typedNftResource.slot && typedResource.slot != undefined 
                         || typedResource.base != typedNftResource.base && typedResource.base != undefined) {
-                        continue;
-                    }
-                } else {
                     continue;
+                  }
+                } else {
+                  continue;
                 }
 
                 if (typedResource.src != typedNftResource.src 
@@ -337,7 +329,7 @@
                     || typedResource.thumb != typedNftResource.thumb
                     || typedResource.license != typedNftResource.license
                 ) {
-                    continue;
+                  continue;
                 }
 
                 // do final checks since this is now established to be the resource we seek
@@ -347,365 +339,357 @@
                 // remove the matching resource from the resources we check
                 nftResources.splice(j, 1);
                 successFindingResource = true;
-            };
+      }
 
-            expect(successFindingResource, `Error: Couldn't find resource #${i}'s counterpart among the returned`).to.be.true;
-        }
+      expect(successFindingResource, `Error: Couldn't find resource #${i}'s counterpart among the returned`).to.be.true;
     }
+  }
 
-    return nftId;
+  return nftId;
 }
 
 export async function sendNft(
-    api: ApiPromise,
-    expectedStatus: "pending" | "sent",
-    originalOwnerUri: string,
-    collectionId: number,
-    nftId: number,
-    newOwner: string | NftIdTuple
+  api: ApiPromise,
+  expectedStatus: 'pending' | 'sent',
+  originalOwnerUri: string,
+  collectionId: number,
+  nftId: number,
+  newOwner: string | NftIdTuple,
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const originalOwner = privateKey(originalOwnerUri, Number(ss58Format));
-    const newOwnerObj = makeNftOwner(api, newOwner);
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const originalOwner = privateKey(originalOwnerUri, Number(ss58Format));
+  const newOwnerObj = makeNftOwner(api, newOwner);
 
-    const nftBeforeSendingOpt = await getNft(api, collectionId, nftId);
+  const nftBeforeSendingOpt = await getNft(api, collectionId, nftId);
 
-    const tx = api.tx.rmrkCore.send(collectionId, nftId, newOwnerObj);
-    const events = await executeTransaction(api, originalOwner, tx);
+  const tx = api.tx.rmrkCore.send(collectionId, nftId, newOwnerObj);
+  const events = await executeTransaction(api, originalOwner, tx);
 
-    const sendResult = extractRmrkCoreTxResult(events, "NFTSent", (data) => {
-        return {
-            dstOwner: data[1] as NftOwner,
-            collectionId: parseInt(data[2].toString(), 10),
-            nftId: parseInt(data[3].toString(), 10)
-        };
-    });
+  const sendResult = extractRmrkCoreTxResult(events, 'NFTSent', (data) => {
+    return {
+      dstOwner: data[1] as NftOwner,
+      collectionId: parseInt(data[2].toString(), 10),
+      nftId: parseInt(data[3].toString(), 10),
+    };
+  });
 
-    expect(sendResult.success, 'Error: Unable to send NFT').to.be.true;
-    const sendData = sendResult.successData!;
+  expect(sendResult.success, 'Error: Unable to send NFT').to.be.true;
+  const sendData = sendResult.successData!;
 
-    expect(sendData.dstOwner.eq(newOwnerObj), 'Error: Invalid target user (from event data)')
-        .to.be.true;
+  expect(sendData.dstOwner.eq(newOwnerObj), 'Error: Invalid target user (from event data)')
+    .to.be.true;
 
-    expect(sendData.collectionId)
-        .to.be.equal(collectionId, 'Error: Invalid collection ID (from event data)');
+  expect(sendData.collectionId)
+    .to.be.equal(collectionId, 'Error: Invalid collection ID (from event data)');
 
-    expect(sendData.nftId).to.be.equal(nftId, 'Error: Invalid NFT ID (from event data)');
+  expect(sendData.nftId).to.be.equal(nftId, 'Error: Invalid NFT ID (from event data)');
 
-    expect(nftBeforeSendingOpt.isSome, 'Error: Unable to fetch NFT before sending').to.be.true;
+  expect(nftBeforeSendingOpt.isSome, 'Error: Unable to fetch NFT before sending').to.be.true;
 
-    const nftBeforeSending = nftBeforeSendingOpt.unwrap();
+  const nftBeforeSending = nftBeforeSendingOpt.unwrap();
 
-    const nftAfterSendingOpt = await getNft(api, collectionId, nftId);
+  const nftAfterSendingOpt = await getNft(api, collectionId, nftId);
 
-    expect(nftAfterSendingOpt.isSome, 'Error: Unable to fetch NFT after sending').to.be.true;
+  expect(nftAfterSendingOpt.isSome, 'Error: Unable to fetch NFT after sending').to.be.true;
 
-    const nftAfterSending = nftAfterSendingOpt.unwrap();
+  const nftAfterSending = nftAfterSendingOpt.unwrap();
 
-    const isOwnedByNewOwner = await isNftOwnedBy(api, newOwner, collectionId, nftId);
-    const isPending = expectedStatus === "pending";
+  const isOwnedByNewOwner = await isNftOwnedBy(api, newOwner, collectionId, nftId);
+  const isPending = expectedStatus === 'pending';
 
-    expect(
-        isOwnedByNewOwner,
-        `Error: The NFT should be owned by ${newOwner.toString()}`
-    ).to.be.true;
+  expect(
+    isOwnedByNewOwner,
+    `Error: The NFT should be owned by ${newOwner.toString()}`,
+  ).to.be.true;
 
-    expect(nftAfterSending.royalty.eq(nftBeforeSending.royalty), 'Error: Invalid NFT royalty after sending')
-        .to.be.true;
+  expect(nftAfterSending.royalty.eq(nftBeforeSending.royalty), 'Error: Invalid NFT royalty after sending')
+    .to.be.true;
 
-    expect(nftAfterSending.metadata.eq(nftBeforeSending.metadata), 'Error: Invalid NFT metadata after sending')
-        .to.be.true;
+  expect(nftAfterSending.metadata.eq(nftBeforeSending.metadata), 'Error: Invalid NFT metadata after sending')
+    .to.be.true;
 
-    expect(nftAfterSending.equipped.eq(nftBeforeSending.equipped), 'Error: Invalid NFT equipped status after sending')
-        .to.be.true;
+  expect(nftAfterSending.equipped.eq(nftBeforeSending.equipped), 'Error: Invalid NFT equipped status after sending')
+    .to.be.true;
 
-    expect(nftAfterSending.pending.eq(isPending), 'Error: Invalid NFT pending state')
-        .to.be.true;
+  expect(nftAfterSending.pending.eq(isPending), 'Error: Invalid NFT pending state')
+    .to.be.true;
 }
 
 export async function acceptNft(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: number,
-    nftId: number,
-    newOwner: string | [number, number]
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: number,
+  nftId: number,
+  newOwner: string | [number, number],
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    const newOwnerObj = makeNftOwner(api, newOwner);
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const newOwnerObj = makeNftOwner(api, newOwner);
 
-    let nftBeforeOpt = await getNft(api, collectionId, nftId);
+  const nftBeforeOpt = await getNft(api, collectionId, nftId);
 
-    const tx = api.tx.rmrkCore.acceptNft(collectionId, nftId, newOwnerObj);
-    const events = await executeTransaction(api, issuer, tx);
+  const tx = api.tx.rmrkCore.acceptNft(collectionId, nftId, newOwnerObj);
+  const events = await executeTransaction(api, issuer, tx);
 
-    const acceptResult = extractRmrkCoreTxResult(events, "NFTAccepted", (data) => {
-        return {
-            recipient: data[1] as NftOwner,
-            collectionId: parseInt(data[2].toString(), 10),
-            nftId: parseInt(data[3].toString(), 10)
-        };
-    });
+  const acceptResult = extractRmrkCoreTxResult(events, 'NFTAccepted', (data) => {
+    return {
+      recipient: data[1] as NftOwner,
+      collectionId: parseInt(data[2].toString(), 10),
+      nftId: parseInt(data[3].toString(), 10),
+    };
+  });
 
-    expect(acceptResult.success, 'Error: Unable to accept NFT').to.be.true;
-    const acceptData = acceptResult.successData!;
+  expect(acceptResult.success, 'Error: Unable to accept NFT').to.be.true;
+  const acceptData = acceptResult.successData!;
 
-    expect(acceptData.recipient.eq(newOwnerObj), 'Error: Invalid NFT recipient (from event data)')
-        .to.be.true;
+  expect(acceptData.recipient.eq(newOwnerObj), 'Error: Invalid NFT recipient (from event data)')
+    .to.be.true;
 
-    expect(acceptData.collectionId)
-        .to.be.equal(collectionId, 'Error: Invalid collection ID (from event data)');
+  expect(acceptData.collectionId)
+    .to.be.equal(collectionId, 'Error: Invalid collection ID (from event data)');
 
-    expect(acceptData.nftId)
-        .to.be.equal(nftId, 'Error: Invalid NFT ID (from event data)');
+  expect(acceptData.nftId)
+    .to.be.equal(nftId, 'Error: Invalid NFT ID (from event data)');
 
-    const nftBefore = nftBeforeOpt.unwrap();
+  const nftBefore = nftBeforeOpt.unwrap();
 
-    const isPendingBeforeAccept = nftBefore.pending.isTrue;
+  const isPendingBeforeAccept = nftBefore.pending.isTrue;
 
-    const nftAfter = (await getNft(api, collectionId, nftId)).unwrap();
-    const isPendingAfterAccept = nftAfter.pending.isTrue;
+  const nftAfter = (await getNft(api, collectionId, nftId)).unwrap();
+  const isPendingAfterAccept = nftAfter.pending.isTrue;
 
-    expect(isPendingBeforeAccept, 'Error: NFT should be pending to be accepted')
-        .to.be.true;
+  expect(isPendingBeforeAccept, 'Error: NFT should be pending to be accepted')
+    .to.be.true;
 
-    expect(isPendingAfterAccept, 'Error: NFT should NOT be pending after accept')
-        .to.be.false;
+  expect(isPendingAfterAccept, 'Error: NFT should NOT be pending after accept')
+    .to.be.false;
 
-    const isOwnedInUniques = await isNftOwnedBy(api, newOwner, collectionId, nftId);
-    expect(isOwnedInUniques, `Error: created NFT is not actually owned by ${newOwner.toString()}`)
-        .to.be.true;
+  const isOwnedInUniques = await isNftOwnedBy(api, newOwner, collectionId, nftId);
+  expect(isOwnedInUniques, `Error: created NFT is not actually owned by ${newOwner.toString()}`)
+    .to.be.true;
 }
 
 export async function rejectNft(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: number,
-    nftId: number,
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: number,
+  nftId: number,
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    let nftBeforeOpt = await getNft(api, collectionId, nftId);
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const nftBeforeOpt = await getNft(api, collectionId, nftId);
 
-    const tx = api.tx.rmrkCore.rejectNft(collectionId, nftId);
-    const events = await executeTransaction(api, issuer, tx);
-    const rejectResult = extractRmrkCoreTxResult(events, "NFTRejected", (data) => {
-        return {
-            collectionId: parseInt(data[1].toString(), 10),
-            nftId: parseInt(data[2].toString(), 10)
-        };
-    });
+  const tx = api.tx.rmrkCore.rejectNft(collectionId, nftId);
+  const events = await executeTransaction(api, issuer, tx);
+  const rejectResult = extractRmrkCoreTxResult(events, 'NFTRejected', (data) => {
+    return {
+      collectionId: parseInt(data[1].toString(), 10),
+      nftId: parseInt(data[2].toString(), 10),
+    };
+  });
 
-    const rejectData = rejectResult.successData!;
+  const rejectData = rejectResult.successData!;
 
-    expect(rejectData.collectionId)
-        .to.be.equal(collectionId, 'Error: Invalid collection ID (from event data)');
+  expect(rejectData.collectionId)
+    .to.be.equal(collectionId, 'Error: Invalid collection ID (from event data)');
 
-    expect(rejectData.nftId)
-        .to.be.equal(nftId, 'Error: Invalid NFT ID (from event data)');
+  expect(rejectData.nftId)
+    .to.be.equal(nftId, 'Error: Invalid NFT ID (from event data)');
 
-    const nftBefore = nftBeforeOpt.unwrap();
+  const nftBefore = nftBeforeOpt.unwrap();
 
-    const isPendingBeforeReject = nftBefore.pending.isTrue;
+  const isPendingBeforeReject = nftBefore.pending.isTrue;
 
-    const nftAfter = await getNft(api, collectionId, nftId);
+  const nftAfter = await getNft(api, collectionId, nftId);
 
-    expect(isPendingBeforeReject, 'Error: NFT should be pending to be rejected')
-        .to.be.true;
+  expect(isPendingBeforeReject, 'Error: NFT should be pending to be rejected')
+    .to.be.true;
 
-    expect(nftAfter.isNone, 'Error: NFT should be burned after reject')
-        .to.be.true;
+  expect(nftAfter.isNone, 'Error: NFT should be burned after reject')
+    .to.be.true;
 }
 
 export async function createBase(
-    api: ApiPromise,
-    issuerUri: string,
-    baseType: string,
-    symbol: string,
-    parts: object[]
+  api: ApiPromise,
+  issuerUri: string,
+  baseType: string,
+  symbol: string,
+  parts: object[],
 ): Promise<number> {
-    let baseId = 0;
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
+  let baseId = 0;
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
 
-    const partTypes = api.createType("Vec<RmrkTraitsPartPartType>", parts) as Vec<PartType>;
+  const partTypes = api.createType('Vec<RmrkTraitsPartPartType>', parts) as Vec<PartType>;
 
-    const tx = api.tx.rmrkEquip.createBase(baseType, symbol, partTypes);
-    const events = await executeTransaction(api, issuer, tx);
+  const tx = api.tx.rmrkEquip.createBase(baseType, symbol, partTypes);
+  const events = await executeTransaction(api, issuer, tx);
 
-    const baseResult = extractRmrkEquipTxResult(
-        events, 'BaseCreated', (data) => {
-            return parseInt(data[1].toString(), 10);
-        }
-    );
+  const baseResult = extractRmrkEquipTxResult(events, 'BaseCreated', (data) => {
+    return parseInt(data[1].toString(), 10);
+  });
 
-    expect(baseResult.success, 'Error: Unable to create Base')
-        .to.be.true;
+  expect(baseResult.success, 'Error: Unable to create Base')
+    .to.be.true;
 
-    baseId = baseResult.successData!;
-    const baseOptional = await getBase(api, baseId);
+  baseId = baseResult.successData!;
+  const baseOptional = await getBase(api, baseId);
 
-    expect(baseOptional.isSome, 'Error: Unable to fetch created Base')
-        .to.be.true;
+  expect(baseOptional.isSome, 'Error: Unable to fetch created Base')
+    .to.be.true;
 
-    const base = baseOptional.unwrap();
-    const baseParts = await getParts(api, baseId);
+  const base = baseOptional.unwrap();
+  const baseParts = await getParts(api, baseId);
 
-    expect(base.issuer.toString()).to.be.equal(issuer.address, "Error: Invalid Base issuer");
-    expect(base.baseType.toUtf8()).to.be.equal(baseType, "Error: Invalid Base type");
-    expect(base.symbol.toUtf8()).to.be.equal(symbol, "Error: Invalid Base symbol");
-    expect(partTypes.eq(baseParts), "Error: Received invalid base parts").to.be.true;
+  expect(base.issuer.toString()).to.be.equal(issuer.address, 'Error: Invalid Base issuer');
+  expect(base.baseType.toUtf8()).to.be.equal(baseType, 'Error: Invalid Base type');
+  expect(base.symbol.toUtf8()).to.be.equal(symbol, 'Error: Invalid Base symbol');
+  expect(partTypes.eq(baseParts), 'Error: Received invalid base parts').to.be.true;
 
-    return baseId;
+  return baseId;
 }
 
 export async function setResourcePriorities(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: number,
-    nftId: number,
-    priorities: number[]
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: number,
+  nftId: number,
+  priorities: number[],
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
 
-    const prioritiesVec = api.createType('Vec<u32>', priorities);
-    const tx = api.tx.rmrkCore.setPriority(collectionId, nftId, prioritiesVec);
-    const events = await executeTransaction(api, issuer, tx);
+  const prioritiesVec = api.createType('Vec<u32>', priorities);
+  const tx = api.tx.rmrkCore.setPriority(collectionId, nftId, prioritiesVec);
+  const events = await executeTransaction(api, issuer, tx);
 
-    const prioResult = extractRmrkCoreTxResult(events, 'PrioritySet', (data) => {
-        return {
-            collectionId: parseInt(data[0].toString(), 10),
-            nftId: parseInt(data[1].toString(), 10)
-        };
-    });
+  const prioResult = extractRmrkCoreTxResult(events, 'PrioritySet', (data) => {
+    return {
+      collectionId: parseInt(data[0].toString(), 10),
+      nftId: parseInt(data[1].toString(), 10),
+    };
+  });
 
-    expect(prioResult.success, 'Error: Unable to set resource priorities').to.be.true;
-    const eventData = prioResult.successData!;
+  expect(prioResult.success, 'Error: Unable to set resource priorities').to.be.true;
+  const eventData = prioResult.successData!;
 
-    expect(eventData.collectionId)
-        .to.be.equal(collectionId, 'Error: Invalid collection ID (set priorities event data)');
+  expect(eventData.collectionId)
+    .to.be.equal(collectionId, 'Error: Invalid collection ID (set priorities event data)');
 
-    expect(eventData.nftId).to.be.equal(nftId, 'Error: Invalid NFT ID (set priorities event data');
+  expect(eventData.nftId).to.be.equal(nftId, 'Error: Invalid NFT ID (set priorities event data');
 
-    for (var i = 0; i < priorities.length; i++) {
-        const resourceId = priorities[i];
+  for (let i = 0; i < priorities.length; i++) {
+    const resourceId = priorities[i];
 
-        const fetchedPrio = await getResourcePriority(api, collectionId, nftId, resourceId);
-        expect(fetchedPrio).to.be.equal(i, 'Error: Invalid priorities are set');
-    }
+    const fetchedPrio = await getResourcePriority(api, collectionId, nftId, resourceId);
+    expect(fetchedPrio).to.be.equal(i, 'Error: Invalid priorities are set');
+  }
 
 }
 
 export async function setEquippableList(
-    api: ApiPromise,
-    issuerUri: string,
-    baseId: number,
-    slotId: number,
-    equippableList: "All" | "Empty" | { 'Custom': number[] }
+  api: ApiPromise,
+  issuerUri: string,
+  baseId: number,
+  slotId: number,
+  equippableList: 'All' | 'Empty' | { 'Custom': number[] },
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    const equippable = api.createType('RmrkTraitsPartEquippableList', equippableList) as EquippableList;
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const equippable = api.createType('RmrkTraitsPartEquippableList', equippableList) as EquippableList;
 
-    const tx = api.tx.rmrkEquip.equippable(baseId, slotId, equippable);
-    const events = await executeTransaction(api, issuer, tx);
+  const tx = api.tx.rmrkEquip.equippable(baseId, slotId, equippable);
+  const events = await executeTransaction(api, issuer, tx);
 
-    const equipListResult = extractRmrkEquipTxResult(events, 'EquippablesUpdated', (data) => {
-        return {
-            baseId: parseInt(data[0].toString(), 10),
-            slotId: parseInt(data[1].toString(), 10)
-        };
-    });
+  const equipListResult = extractRmrkEquipTxResult(events, 'EquippablesUpdated', (data) => {
+    return {
+      baseId: parseInt(data[0].toString(), 10),
+      slotId: parseInt(data[1].toString(), 10),
+    };
+  });
 
-    expect(equipListResult.success, 'Error: unable to update equippable list').to.be.true;
-    const updateEvent = equipListResult.successData!;
+  expect(equipListResult.success, 'Error: unable to update equippable list').to.be.true;
+  const updateEvent = equipListResult.successData!;
 
-    expect(updateEvent.baseId)
-        .to.be.equal(baseId, 'Error: invalid base ID from update equippable event');
+  expect(updateEvent.baseId)
+    .to.be.equal(baseId, 'Error: invalid base ID from update equippable event');
 
-    expect(updateEvent.slotId)
-        .to.be.equal(slotId, 'Error: invalid base ID from update equippable event');
+  expect(updateEvent.slotId)
+    .to.be.equal(slotId, 'Error: invalid base ID from update equippable event');
 
-    const fetchedEquippableList = await getEquippableList(api, baseId, slotId);
+  const fetchedEquippableList = await getEquippableList(api, baseId, slotId);
 
-    expect(fetchedEquippableList, 'Error: unable to fetch equippable list').to.be.not.null;
-    if (fetchedEquippableList) {
-        expect(fetchedEquippableList)
-            .to.be.deep.equal(equippableList, 'Error: invalid equippable list was set');
-    }
+  expect(fetchedEquippableList, 'Error: unable to fetch equippable list').to.be.not.null;
+  if (fetchedEquippableList) {
+    expect(fetchedEquippableList)
+      .to.be.deep.equal(equippableList, 'Error: invalid equippable list was set');
+  }
 }
 
 export async function addTheme(
-    api: ApiPromise,
-    issuerUri: string,
-    baseId: number,
-    themeObj: object,
-    filterKeys: string[] | null = null
+  api: ApiPromise,
+  issuerUri: string,
+  baseId: number,
+  themeObj: object,
+  filterKeys: string[] | null = null,
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
-    const theme = api.createType('RmrkTraitsTheme', themeObj) as Theme;
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
+  const theme = api.createType('RmrkTraitsTheme', themeObj) as Theme;
 
-    const tx = api.tx.rmrkEquip.themeAdd(baseId, theme);
-    const events = await executeTransaction(api, issuer, tx);
+  const tx = api.tx.rmrkEquip.themeAdd(baseId, theme);
+  const events = await executeTransaction(api, issuer, tx);
 
-    expect(isTxResultSuccess(events), 'Error: Unable to add Theme').to.be.true;
+  expect(isTxResultSuccess(events), 'Error: Unable to add Theme').to.be.true;
 
-    const fetchedThemeOpt = await getTheme(api, baseId, theme.name.toUtf8(), null);
+  const fetchedThemeOpt = await getTheme(api, baseId, theme.name.toUtf8(), null);
 
-    expect(fetchedThemeOpt.isSome, 'Error: Unable to fetch theme').to.be.true;
+  expect(fetchedThemeOpt.isSome, 'Error: Unable to fetch theme').to.be.true;
 
-    const fetchedTheme = fetchedThemeOpt.unwrap();
+  const fetchedTheme = fetchedThemeOpt.unwrap();
 
-    expect(theme.name.eq(fetchedTheme.name), 'Error: Invalid theme name').to.be.true;
+  expect(theme.name.eq(fetchedTheme.name), 'Error: Invalid theme name').to.be.true;
 
-    for (var i = 0; i < theme.properties.length; i++) {
-        const property = theme.properties[i];
-        const propertyKey = property.key.toUtf8();
+  for (let i = 0; i < theme.properties.length; i++) {
+    const property = theme.properties[i];
+    const propertyKey = property.key.toUtf8();
 
-        const propertyFoundCount = fetchedTheme.properties.filter(
-            (fetchedProp) => property.key.eq(fetchedProp.key)
-        ).length;
+    const propertyFoundCount = fetchedTheme.properties.filter((fetchedProp) => property.key.eq(fetchedProp.key)).length;
 
-        expect(propertyFoundCount > 1, `Error: Too many properties with key ${propertyKey} found`)
-            .to.be.false;
-
-        if (filterKeys) {
-            const isFiltered = fetchedTheme.properties.find(
-                (fetchedProp) => fetchedProp.key.eq(property.key)
-            ) === undefined;
+    expect(propertyFoundCount > 1, `Error: Too many properties with key ${propertyKey} found`)
+      .to.be.false;
 
-            if (isFiltered) {
-                expect(propertyFoundCount === 0, `Error: Unexpected filtered key ${propertyKey}`)
-                    .to.be.true;
-                continue;
-            }
-        }
+    if (filterKeys) {
+      const isFiltered = fetchedTheme.properties.find((fetchedProp) => fetchedProp.key.eq(property.key)) === undefined;
 
-        expect(propertyFoundCount === 1, `Error: The property with key ${propertyKey} is not found`)
-            .to.be.true;
+      if (isFiltered) {
+        expect(propertyFoundCount === 0, `Error: Unexpected filtered key ${propertyKey}`)
+          .to.be.true;
+        continue;
+      }
     }
+
+    expect(propertyFoundCount === 1, `Error: The property with key ${propertyKey} is not found`)
+      .to.be.true;
+  }
 }
 
 export async function lockCollection(
   api: ApiPromise,
   issuerUri: string,
   collectionId: number,
-  max: number = 0
+  max = 0,
 ) {
   const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
   const issuer = privateKey(issuerUri, Number(ss58Format));
   const tx = api.tx.rmrkCore.lockCollection(collectionId);
   const events = await executeTransaction(api, issuer, tx);
-  const lockResult = extractRmrkCoreTxResult(
-      events, 'CollectionLocked', (data) => {
-          return parseInt(data[1].toString(), 10);
-      }
-  );
+  const lockResult = extractRmrkCoreTxResult(events, 'CollectionLocked', (data) => {
+    return parseInt(data[1].toString(), 10);
+  });
   expect(lockResult.success, 'Error: Unable to lock a collection').to.be.true;
   expect(lockResult.successData!, 'Error: Invalid collection was locked')
-      .to.be.eq(collectionId);
+    .to.be.eq(collectionId);
 
   await getCollection(api, collectionId).then((collectionOption) => {
     const collection = collectionOption.unwrap();
@@ -718,23 +702,21 @@
   issuerUri: string,
   collectionId: number,
   key: string,
-  value: string
+  value: string,
 ) {
   const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
   const alice = privateKey(issuerUri, Number(ss58Format));
 
   const tx = api.tx.rmrkCore.setProperty(collectionId, null, key, value);
   const events = await executeTransaction(api, alice, tx);
-  const propResult = extractRmrkCoreTxResult(
-        events, 'PropertySet', (data) => {
-            return {
-                collectionId: parseInt(data[0].toString(), 10),
-                nftId: data[1] as Option<u32>,
-                key: data[2] as Bytes,
-                value: data[3] as Bytes
-            };
-        }
-    );
+  const propResult = extractRmrkCoreTxResult(events, 'PropertySet', (data) => {
+    return {
+      collectionId: parseInt(data[0].toString(), 10),
+      nftId: data[1] as Option<u32>,
+      key: data[2] as Bytes,
+      value: data[3] as Bytes,
+    };
+  });
 
   expect(propResult.success, 'Error: Unable to set collection property').to.be.true;
   const eventData = propResult.successData!;
@@ -760,18 +742,16 @@
   api: ApiPromise,
   issuerUri: string,
   collectionId: number,
-  nftId: number
+  nftId: number,
 ) {
   const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
   const issuer = privateKey(issuerUri, Number(ss58Format));
   const maxBurns = 10;
   const tx = api.tx.rmrkCore.burnNft(collectionId, nftId, maxBurns);
   const events = await executeTransaction(api, issuer, tx);
-  const burnResult = extractRmrkCoreTxResult(
-    events, 'NFTBurned', (data) => {
-      return parseInt(data[1].toString(), 10);
-    }
-  );
+  const burnResult = extractRmrkCoreTxResult(events, 'NFTBurned', (data) => {
+    return parseInt(data[1].toString(), 10);
+  });
 
   expect(burnResult.success, 'Error: Unable to burn an NFT').to.be.true;
   expect(burnResult.successData!, 'Error: Invalid NFT was burned')
@@ -782,185 +762,181 @@
 }
 
 export async function acceptNftResource(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: number,
-    nftId: number,
-    resourceId: number,
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: number,
+  nftId: number,
+  resourceId: number,
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
 
-    const tx = api.tx.rmrkCore.acceptResource(
-        collectionId,
-        nftId,
-        resourceId,
-    );
+  const tx = api.tx.rmrkCore.acceptResource(
+    collectionId,
+    nftId,
+    resourceId,
+  );
 
-    const events = await executeTransaction(api, issuer, tx);
-    const acceptResult = extractRmrkCoreTxResult(
-        events, 'ResourceAccepted', (data) => {
-            return {
-                nftId: parseInt(data[0].toString(), 10),
-                resourceId: parseInt(data[1].toString(), 10)
-            };
-        }
-    )
+  const events = await executeTransaction(api, issuer, tx);
+  const acceptResult = extractRmrkCoreTxResult(events, 'ResourceAccepted', (data) => {
+    return {
+      nftId: parseInt(data[0].toString(), 10),
+      resourceId: parseInt(data[1].toString(), 10),
+    };
+  });
 
-    expect(acceptResult.success, 'Error: Unable to accept a resource').to.be.true;
-    expect(acceptResult.successData!.nftId, 'Error: Invalid NFT ID while accepting a resource')
-        .to.be.eq(nftId);
-    expect(acceptResult.successData!.resourceId, 'Error: Invalid resource ID while accepting a resource')
-        .to.be.eq(resourceId);
+  expect(acceptResult.success, 'Error: Unable to accept a resource').to.be.true;
+  expect(acceptResult.successData!.nftId, 'Error: Invalid NFT ID while accepting a resource')
+    .to.be.eq(nftId);
+  expect(acceptResult.successData!.resourceId, 'Error: Invalid resource ID while accepting a resource')
+    .to.be.eq(resourceId);
 
-    const resource = await getResourceById(api, collectionId, nftId, resourceId);
-    checkResourceStatus(resource, "added");
+  const resource = await getResourceById(api, collectionId, nftId, resourceId);
+  checkResourceStatus(resource, 'added');
 }
 
 async function executeResourceCreation(
-    api: ApiPromise,
-    issuer: IKeyringPair,
-    tx: any,
-    collectionId: number,
-    nftId: number,
-    expectedStatus: "pending" | "added"
+  api: ApiPromise,
+  issuer: IKeyringPair,
+  tx: any,
+  collectionId: number,
+  nftId: number,
+  expectedStatus: 'pending' | 'added',
 ): Promise<ResourceInfo> {
-    const events = await executeTransaction(api, issuer, tx);
+  const events = await executeTransaction(api, issuer, tx);
 
-    const resourceResult = extractRmrkCoreTxResult(
-        events, 'ResourceAdded', (data) => {
-            return parseInt(data[1].toString(), 10);
-        }
-    );
-    expect(resourceResult.success, 'Error: Unable to add resource').to.be.true;
-    const resourceId = resourceResult.successData!;
+  const resourceResult = extractRmrkCoreTxResult(events, 'ResourceAdded', (data) => {
+    return parseInt(data[1].toString(), 10);
+  });
+  expect(resourceResult.success, 'Error: Unable to add resource').to.be.true;
+  const resourceId = resourceResult.successData!;
 
-    const resource = await getResourceById(api, collectionId, nftId, resourceId);
-    checkResourceStatus(resource, expectedStatus);
+  const resource = await getResourceById(api, collectionId, nftId, resourceId);
+  checkResourceStatus(resource, expectedStatus);
 
-    return resource;
+  return resource;
 }
 
 export async function addNftBasicResource(
-    api: ApiPromise,
-    issuerUri: string,
-    expectedStatus: "pending" | "added",
-    collectionId: number,
-    nftId: number,
-    src: string | null,
-    metadata: string | null,
-    license: string | null,
-    thumb: string | null
+  api: ApiPromise,
+  issuerUri: string,
+  expectedStatus: 'pending' | 'added',
+  collectionId: number,
+  nftId: number,
+  src: string | null,
+  metadata: string | null,
+  license: string | null,
+  thumb: string | null,
 ): Promise<number> {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
 
-    const basicResource = api.createType('RmrkTraitsResourceBasicResource', {
-        src: src,
-        metadata: metadata,
-        license: license,
-        thumb: thumb
-    }) as BasicResource;
+  const basicResource = api.createType('RmrkTraitsResourceBasicResource', {
+    src: src,
+    metadata: metadata,
+    license: license,
+    thumb: thumb,
+  }) as BasicResource;
 
-    const tx = api.tx.rmrkCore.addBasicResource(
-        collectionId,
-        nftId,
-        basicResource
-    );
+  const tx = api.tx.rmrkCore.addBasicResource(
+    collectionId,
+    nftId,
+    basicResource,
+  );
 
-    const resource = await executeResourceCreation(api, issuer, tx, collectionId, nftId, expectedStatus);
+  const resource = await executeResourceCreation(api, issuer, tx, collectionId, nftId, expectedStatus);
 
-    // FIXME A workaround. It seems it is a PolkadotJS bug.
-    // All of the following are `false`.
-    //
-    // console.log('>>> basic:', resource.resource.isBasic);
-    // console.log('>>> composable:', resource.resource.isComposable);
-    // console.log('>>> slot:', resource.resource.isSlot);
-    const resourceJson = resource.resource.toHuman() as any;
+  // FIXME A workaround. It seems it is a PolkadotJS bug.
+  // All of the following are `false`.
+  //
+  // console.log('>>> basic:', resource.resource.isBasic);
+  // console.log('>>> composable:', resource.resource.isComposable);
+  // console.log('>>> slot:', resource.resource.isSlot);
+  const resourceJson = resource.resource.toHuman() as any;
 
-    expect(resourceJson.hasOwnProperty('Basic'), 'Error: Expected basic resource type')
-        .to.be.true;
+  expect(resourceJson.hasOwnProperty('Basic'), 'Error: Expected basic resource type')
+    .to.be.true;
 
-    const recvBasicRes = resourceJson['Basic'];
+  const recvBasicRes = resourceJson['Basic'];
 
-    expect(recvBasicRes.src, 'Error: Invalid basic resource src')
-      .to.be.eq(src);
-    expect(recvBasicRes.metadata, 'Error: basic first resource metadata')
-      .to.be.eq(metadata);
-    expect(recvBasicRes.license, 'Error: basic first resource license')
-      .to.be.eq(license);
-    expect(recvBasicRes.thumb, 'Error: basic first resource thumb')
-      .to.be.eq(thumb);
+  expect(recvBasicRes.src, 'Error: Invalid basic resource src')
+    .to.be.eq(src);
+  expect(recvBasicRes.metadata, 'Error: basic first resource metadata')
+    .to.be.eq(metadata);
+  expect(recvBasicRes.license, 'Error: basic first resource license')
+    .to.be.eq(license);
+  expect(recvBasicRes.thumb, 'Error: basic first resource thumb')
+    .to.be.eq(thumb);
 
-    return resource.id.toNumber();
+  return resource.id.toNumber();
 }
 
 export async function addNftComposableResource(
-    api: ApiPromise,
-    issuerUri: string,
-    expectedStatus: "pending" | "added",
-    collectionId: number,
-    nftId: number,
-    parts: number[],
-    baseId: number,
-    src: string | null,
-    metadata: string | null,
-    license: string | null,
-    thumb: string | null
+  api: ApiPromise,
+  issuerUri: string,
+  expectedStatus: 'pending' | 'added',
+  collectionId: number,
+  nftId: number,
+  parts: number[],
+  baseId: number,
+  src: string | null,
+  metadata: string | null,
+  license: string | null,
+  thumb: string | null,
 ): Promise<number> {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
 
-    const composableResource = api.createType('RmrkTraitsResourceComposableResource', {
-        parts: parts, // api.createType('Vec<u32>', parts),
-        base: baseId,
-        src: src,
-        metadata: metadata,
-        license: license,
-        thumb: thumb
-    }) as ComposableResource;
+  const composableResource = api.createType('RmrkTraitsResourceComposableResource', {
+    parts: parts, // api.createType('Vec<u32>', parts),
+    base: baseId,
+    src: src,
+    metadata: metadata,
+    license: license,
+    thumb: thumb,
+  }) as ComposableResource;
 
-    const tx = api.tx.rmrkCore.addComposableResource(
-        collectionId,
-        nftId,
-        composableResource
-    );
+  const tx = api.tx.rmrkCore.addComposableResource(
+    collectionId,
+    nftId,
+    composableResource,
+  );
 
-    const resource = await executeResourceCreation(api, issuer, tx, collectionId, nftId, expectedStatus);
+  const resource = await executeResourceCreation(api, issuer, tx, collectionId, nftId, expectedStatus);
 
-    // FIXME A workaround. It seems it is a PolkadotJS bug.
-    // All of the following are `false`.
-    //
-    // console.log('>>> basic:', resource.resource.isBasic);
-    // console.log('>>> composable:', resource.resource.isComposable);
-    // console.log('>>> slot:', resource.resource.isSlot);
-    const resourceJson = resource.resource.toHuman() as any;
+  // FIXME A workaround. It seems it is a PolkadotJS bug.
+  // All of the following are `false`.
+  //
+  // console.log('>>> basic:', resource.resource.isBasic);
+  // console.log('>>> composable:', resource.resource.isComposable);
+  // console.log('>>> slot:', resource.resource.isSlot);
+  const resourceJson = resource.resource.toHuman() as any;
 
-    expect(resourceJson.hasOwnProperty('Composable'), 'Error: Expected composable resource type')
-        .to.be.true;
+  expect(resourceJson.hasOwnProperty('Composable'), 'Error: Expected composable resource type')
+    .to.be.true;
 
-    const recvComposableRes = resourceJson['Composable'];
+  const recvComposableRes = resourceJson['Composable'];
 
-    expect(recvComposableRes.parts.toString(), 'Error: Invalid composable resource parts')
-      .to.be.eq(parts.toString());
-    expect(recvComposableRes.base, 'Error: Invalid composable resource base id')
-      .to.be.eq(baseId.toString());
-    expect(recvComposableRes.src, 'Error: Invalid composable resource src')
-      .to.be.eq(src);
-    expect(recvComposableRes.metadata, 'Error: Invalid composable resource metadata')
-      .to.be.eq(metadata);
-    expect(recvComposableRes.license, 'Error: Invalid composable resource license')
-      .to.be.eq(license);
-    expect(recvComposableRes.thumb, 'Error: Invalid composable resource thumb')
-      .to.be.eq(thumb);
+  expect(recvComposableRes.parts.toString(), 'Error: Invalid composable resource parts')
+    .to.be.eq(parts.toString());
+  expect(recvComposableRes.base, 'Error: Invalid composable resource base id')
+    .to.be.eq(baseId.toString());
+  expect(recvComposableRes.src, 'Error: Invalid composable resource src')
+    .to.be.eq(src);
+  expect(recvComposableRes.metadata, 'Error: Invalid composable resource metadata')
+    .to.be.eq(metadata);
+  expect(recvComposableRes.license, 'Error: Invalid composable resource license')
+    .to.be.eq(license);
+  expect(recvComposableRes.thumb, 'Error: Invalid composable resource thumb')
+    .to.be.eq(thumb);
 
-    return resource.id.toNumber();
+  return resource.id.toNumber();
 }
 
 export async function addNftSlotResource(
   api: ApiPromise,
   issuerUri: string,
-  expectedStatus: "pending" | "added",
+  expectedStatus: 'pending' | 'added',
   collectionId: number,
   nftId: number,
   baseId: number,
@@ -968,24 +944,24 @@
   src: string | null,
   metadata: string | null,
   license: string | null,
-  thumb: string | null
+  thumb: string | null,
 ): Promise<number>  {
   const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
   const issuer = privateKey(issuerUri, Number(ss58Format));
 
   const slotResource = api.createType('RmrkTraitsResourceSlotResource', {
-      base: baseId,
-      src: src,
-      metadata,
-      slot: slotId,
-      license: license,
-      thumb: thumb
+    base: baseId,
+    src: src,
+    metadata,
+    slot: slotId,
+    license: license,
+    thumb: thumb,
   }) as SlotResource;
 
   const tx = api.tx.rmrkCore.addSlotResource(
     collectionId,
     nftId,
-    slotResource
+    slotResource,
   );
 
   const resource = await executeResourceCreation(api, issuer, tx, collectionId, nftId, expectedStatus);
@@ -999,7 +975,7 @@
   const resourceJson = resource.resource.toHuman() as any;
 
   expect(resourceJson.hasOwnProperty('Slot'), 'Error: Expected slot resource type')
-        .to.be.true;
+    .to.be.true;
 
   const recvSlotRes = resourceJson['Slot'];
 
@@ -1026,22 +1002,20 @@
   equipper: NftIdTuple,
   resource: number,
   base: number,
-  slot: number
+  slot: number,
 ) {
   const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
   const issuer = privateKey(issuerUri, Number(ss58Format));
   const tx = api.tx.rmrkEquip.equip(item, equipper, resource, base, slot);
   const events = await executeTransaction(api, issuer, tx);
-  const equipResult = extractRmrkEquipTxResult(
-    events, 'SlotEquipped', (data) => {
-      return {
-        item_collection: parseInt(data[0].toString(), 10),
-        item_nft: parseInt(data[1].toString(), 10),
-        base_id: parseInt(data[2].toString(), 10),
-        slot_id: parseInt(data[3].toString(), 10),
-      };
-    }
-  )
+  const equipResult = extractRmrkEquipTxResult(events, 'SlotEquipped', (data) => {
+    return {
+      item_collection: parseInt(data[0].toString(), 10),
+      item_nft: parseInt(data[1].toString(), 10),
+      base_id: parseInt(data[2].toString(), 10),
+      slot_id: parseInt(data[3].toString(), 10),
+    };
+  });
   expect(equipResult.success, 'Error: Unable to equip an item').to.be.true;
   expect(equipResult.successData!.item_collection, 'Error: Invalid item collection id')
     .to.be.eq(item[0]);
@@ -1060,7 +1034,7 @@
   equipper: any,
   resource: number,
   base: number,
-  slot: number
+  slot: number,
 ) {
   const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
   const issuer = privateKey(issuerUri, Number(ss58Format));
@@ -1069,7 +1043,7 @@
 
   const unEquipResult = extractRmrkEquipTxResult(
     events,
-    "SlotUnequipped",
+    'SlotUnequipped',
     (data) => {
       return {
         item_collection: parseInt(data[0].toString(), 10),
@@ -1077,7 +1051,7 @@
         base_id: parseInt(data[2].toString(), 10),
         slot_id: parseInt(data[3].toString(), 10),
       };
-    }
+    },
   );
 
   expect(unEquipResult.success, 'Error: Unable to unequip an item').to.be.true;
@@ -1092,68 +1066,64 @@
 }
 
 export async function removeNftResource(
-    api: ApiPromise,
-    expectedStatus: "pending" | "removed",
-    issuerUri: string,
-    collectionId: number,
-    nftId: number,
-    resourceId: number
+  api: ApiPromise,
+  expectedStatus: 'pending' | 'removed',
+  issuerUri: string,
+  collectionId: number,
+  nftId: number,
+  resourceId: number,
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
 
-    const tx = api.tx.rmrkCore.removeResource(collectionId, nftId, resourceId);
-    const events = await executeTransaction(api, issuer, tx);
-    const removeResult = extractRmrkCoreTxResult(
-        events, 'ResourceRemoval', (data) => {
-            return {
-                nftId: parseInt(data[0].toString(), 10),
-                resourceId: parseInt(data[1].toString(), 10)
-            };
-        }
-    )
-    expect(removeResult.success, 'Error: Unable to remove a resource').to.be.true;
-    expect(removeResult.successData!.nftId, 'Error: Invalid NFT Id while removing a resource')
-        .to.be.eq(nftId);
-    expect(removeResult.successData!.resourceId, 'Error: Invalid resource Id while removing a resource')
-        .to.be.eq(resourceId);
+  const tx = api.tx.rmrkCore.removeResource(collectionId, nftId, resourceId);
+  const events = await executeTransaction(api, issuer, tx);
+  const removeResult = extractRmrkCoreTxResult(events, 'ResourceRemoval', (data) => {
+    return {
+      nftId: parseInt(data[0].toString(), 10),
+      resourceId: parseInt(data[1].toString(), 10),
+    };
+  });
+  expect(removeResult.success, 'Error: Unable to remove a resource').to.be.true;
+  expect(removeResult.successData!.nftId, 'Error: Invalid NFT Id while removing a resource')
+    .to.be.eq(nftId);
+  expect(removeResult.successData!.resourceId, 'Error: Invalid resource Id while removing a resource')
+    .to.be.eq(resourceId);
 
-    let afterDeleting = await findResourceById(api, collectionId, nftId, resourceId);
+  const afterDeleting = await findResourceById(api, collectionId, nftId, resourceId);
 
-    if (expectedStatus === 'pending') {
-        expect(afterDeleting).not.to.be.null;
-        expect(afterDeleting?.pendingRemoval.isTrue).to.be.equal(true);
-    } else {
-        expect(afterDeleting).to.be.null;
-    }
+  if (expectedStatus === 'pending') {
+    expect(afterDeleting).not.to.be.null;
+    expect(afterDeleting?.pendingRemoval.isTrue).to.be.equal(true);
+  } else {
+    expect(afterDeleting).to.be.null;
+  }
 }
 
 export async function acceptResourceRemoval(
-    api: ApiPromise,
-    issuerUri: string,
-    collectionId: number,
-    nftId: number,
-    resourceId: number
+  api: ApiPromise,
+  issuerUri: string,
+  collectionId: number,
+  nftId: number,
+  resourceId: number,
 ) {
-    const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
-    const issuer = privateKey(issuerUri, Number(ss58Format));
+  const ss58Format = api.registry.getChainProperties()!.toJSON().ss58Format;
+  const issuer = privateKey(issuerUri, Number(ss58Format));
 
-    const tx = api.tx.rmrkCore.acceptResourceRemoval(collectionId, nftId, resourceId);
-    const events = await executeTransaction(api, issuer, tx);
-    const acceptResult = extractRmrkCoreTxResult(
-        events, 'ResourceRemovalAccepted', (data) => {
-            return {
-                nftId: parseInt(data[0].toString(), 10),
-                resourceId: parseInt(data[1].toString(), 10)
-            };
-        }
-    )
-    expect(acceptResult.success, 'Error: Unable to accept a resource').to.be.true;
-    expect(acceptResult.successData!.nftId, 'Error: Invalid NFT Id while accepting a resource')
-        .to.be.eq(nftId);
-    expect(acceptResult.successData!.resourceId, 'Error: Invalid resource Id while accepting a resource')
-        .to.be.eq(resourceId);
+  const tx = api.tx.rmrkCore.acceptResourceRemoval(collectionId, nftId, resourceId);
+  const events = await executeTransaction(api, issuer, tx);
+  const acceptResult = extractRmrkCoreTxResult(events, 'ResourceRemovalAccepted', (data) => {
+    return {
+      nftId: parseInt(data[0].toString(), 10),
+      resourceId: parseInt(data[1].toString(), 10),
+    };
+  });
+  expect(acceptResult.success, 'Error: Unable to accept a resource').to.be.true;
+  expect(acceptResult.successData!.nftId, 'Error: Invalid NFT Id while accepting a resource')
+    .to.be.eq(nftId);
+  expect(acceptResult.successData!.resourceId, 'Error: Invalid resource Id while accepting a resource')
+    .to.be.eq(resourceId);
 
-    let afterDeleting = await findResourceById(api, collectionId, nftId, resourceId);
-    expect(afterDeleting, 'Error: resource deleting failed').to.be.null;
+  const afterDeleting = await findResourceById(api, collectionId, nftId, resourceId);
+  expect(afterDeleting, 'Error: resource deleting failed').to.be.null;
 }
modifiedtests/src/substrate/substrate-api.tsdiffbeforeafterboth
--- a/tests/src/substrate/substrate-api.ts
+++ b/tests/src/substrate/substrate-api.ts
@@ -61,7 +61,7 @@
 
 export async function getApiConnection(settings: ApiOptions | undefined = undefined): Promise<ApiPromise> {
   settings = settings || defaultApiOptions();
-  let api = new ApiPromise(settings);
+  const api = new ApiPromise(settings);
 
   if (api) {
     await api.isReadyOrError;