--- a/tests/src/util/helpers.ts
+++ b/tests/src/util/helpers.ts
@@ -100,6 +100,23 @@
   checkMsgSysMethod: string;
 }
 
+export interface IFungibleTokenDataType {
+  Value: number;
+}
+
+export interface IChainLimits {
+  CollectionNumbersLimit: number;
+	AccountTokenOwnershipLimit: number;
+	CollectionsAdminsLimit: number;
+	CustomDataLimit: number;
+	NftSponsorTransferTimeout: number;
+	FungibleSponsorTransferTimeout: number;
+	RefungibleSponsorTransferTimeout: number;
+	OffchainSchemaLimit: number;
+	VariableOnChainSchemaLimit: number;
+	ConstOnChainSchemaLimit: number;
+}
+
 export interface IReFungibleTokenDataType {
   Owner: IReFungibleOwner[];
   ConstData: number[];
@@ -457,11 +474,11 @@
   });
 }
 
-export async function removeCollectionSponsorExpectFailure(collectionId: number) {
+export async function removeCollectionSponsorExpectFailure(collectionId: number, senderSeed = '//Alice') {
   await usingApi(async (api) => {
 
     // Run the transaction
-    const alicePrivateKey = privateKey('//Alice');
+    const alicePrivateKey = privateKey(senderSeed);
     const tx = api.tx.nft.removeCollectionSponsor(collectionId);
     await expect(submitTransactionExpectFailAsync(alicePrivateKey, tx)).to.be.rejected;
   });
@@ -770,6 +787,15 @@
   });
 }
 
+export async function addCollectionAdminExpectSuccess(sender: IKeyringPair, collectionId: number, address: IKeyringPair) {
+  await usingApi(async (api) => {
+    const changeAdminTx = api.tx.nft.addCollectionAdmin(collectionId, normalizeAccountId(address.address));
+    const events = await submitTransactionAsync(sender, changeAdminTx);
+    const result = getCreateCollectionResult(events);
+    expect(result.success).to.be.true;
+  });
+}
+
 export async function
 scheduleTransferExpectSuccess(
   collectionId: number,
@@ -1047,6 +1073,17 @@
   });
 }
 
+export async function setChainLimitsExpectFailure(sender: IKeyringPair, limits: IChainLimits) {
+  await usingApi(async (api) => {
+    // Run the transaction
+    const tx = api.tx.nft.setChainLimits(limits);
+    const events = await expect(submitTransactionExpectFailAsync(sender, tx)).to.be.rejected;
+    const result = getCreateCollectionResult(events);
+    // tslint:disable-next-line:no-unused-expression
+    expect(result.success).to.be.false;
+  });
+}
+
 export async function isWhitelisted(collectionId: number, address: string) {
   let whitelisted = false;
   await usingApi(async (api) => {