123456import chai from 'chai';7import chaiAsPromised from 'chai-as-promised';8import { default as usingApi, submitTransactionAsync, submitTransactionExpectFailAsync } from './substrate/substrate-api';9import { alicesPublicKey, bobsPublicKey } from './accounts';10import privateKey from './substrate/privateKey';11import { BigNumber } from 'bignumber.js';12import { IKeyringPair } from '@polkadot/types/types';13import { 14 createCollectionExpectSuccess, 15 createItemExpectSuccess,16 getGenericResult,17 transferExpectSuccess,18} from './util/helpers';1920import { default as waitNewBlocks } from './substrate/wait-new-blocks';21import { ApiPromise } from '@polkadot/api';2223chai.use(chaiAsPromised);24const expect = chai.expect;2526const Treasury = '5EYCAe5ijiYfyeZ2JJCGq56LmPyNRAKzpG4QkoQkkQNB5e6Z';27const saneMinimumFee = 0.05;28const saneMaximumFee = 0.5;29const createCollectionDeposit = 100;3031let alice: IKeyringPair;32let bob: IKeyringPair;3334353637function skipInflationBlock(api: ApiPromise): Promise<void> {38 const promise = new Promise<void>(async (resolve) => {39 const blockInterval = parseInt((await api.consts.inflation.inflationBlockInterval).toString());40 const unsubscribe = await api.rpc.chain.subscribeNewHeads(head => {41 const currentBlock = parseInt(head.number.toString());42 if (currentBlock % blockInterval < blockInterval - 10) {43 unsubscribe();44 resolve();45 } else {46 console.log(`Skipping inflation block, current block: ${currentBlock}`);47 }48 });49 });5051 return promise;52}5354describe('integration test: Fees must be credited to Treasury:', () => {55 before(async () => {56 await usingApi(async () => {57 alice = privateKey('//Alice');58 bob = privateKey('//Bob');59 });60 });6162 it('Total issuance does not change', async () => {63 await usingApi(async (api) => {64 await skipInflationBlock(api);65 await waitNewBlocks(api, 1);6667 const totalBefore = new BigNumber((await api.query.balances.totalIssuance()).toString());6869 const alicePrivateKey = privateKey('//Alice');70 const amount = new BigNumber(1);71 const transfer = api.tx.balances.transfer(bobsPublicKey, amount.toFixed());7273 const result = getGenericResult(await submitTransactionAsync(alicePrivateKey, transfer));7475 const totalAfter = new BigNumber((await api.query.balances.totalIssuance()).toString());7677 expect(result.success).to.be.true;78 expect(totalAfter.toFixed()).to.be.equal(totalBefore.toFixed());79 });80 });8182 it('Sender balance decreased by fee+sent amount, Treasury balance increased by fee', async () => {83 await usingApi(async (api) => {84 await skipInflationBlock(api);85 await waitNewBlocks(api, 1);8687 const alicePrivateKey = privateKey('//Alice');88 const treasuryBalanceBefore = new BigNumber((await api.query.system.account(Treasury)).data.free.toString());89 const aliceBalanceBefore = new BigNumber((await api.query.system.account(alicesPublicKey)).data.free.toString());9091 const amount = new BigNumber(1);92 const transfer = api.tx.balances.transfer(bobsPublicKey, amount.toFixed());93 const result = getGenericResult(await submitTransactionAsync(alicePrivateKey, transfer));9495 const treasuryBalanceAfter = new BigNumber((await api.query.system.account(Treasury)).data.free.toString());96 const aliceBalanceAfter = new BigNumber((await api.query.system.account(alicesPublicKey)).data.free.toString());97 const fee = aliceBalanceBefore.minus(aliceBalanceAfter).minus(amount);98 const treasuryIncrease = treasuryBalanceAfter.minus(treasuryBalanceBefore);99100 expect(result.success).to.be.true;101 expect(treasuryIncrease.toFixed()).to.be.equal(fee.toFixed());102 });103 });104105 it('Treasury balance increased by failed tx fee', async () => {106 await usingApi(async (api) => {107 await skipInflationBlock(api);108 await waitNewBlocks(api, 1);109110 const bobPrivateKey = privateKey('//Bob');111 const treasuryBalanceBefore = new BigNumber((await api.query.system.account(Treasury)).data.free.toString());112 const bobBalanceBefore = new BigNumber((await api.query.system.account(bobsPublicKey)).data.free.toString());113114 const badTx = api.tx.balances.setBalance(alicesPublicKey, 0, 0);115 await expect(submitTransactionExpectFailAsync(bobPrivateKey, badTx)).to.be.rejected;116117 const treasuryBalanceAfter = new BigNumber((await api.query.system.account(Treasury)).data.free.toString());118 const bobBalanceAfter = new BigNumber((await api.query.system.account(bobsPublicKey)).data.free.toString());119 const fee = bobBalanceBefore.minus(bobBalanceAfter);120 const treasuryIncrease = treasuryBalanceAfter.minus(treasuryBalanceBefore);121122 expect(treasuryIncrease.toFixed()).to.be.equal(fee.toFixed());123 });124 });125126 it('NFT Transactions also send fees to Treasury', async () => {127 await usingApi(async (api) => {128 await skipInflationBlock(api);129 await waitNewBlocks(api, 1);130131 const treasuryBalanceBefore = new BigNumber((await api.query.system.account(Treasury)).data.free.toString());132 const aliceBalanceBefore = new BigNumber((await api.query.system.account(alicesPublicKey)).data.free.toString());133134 await createCollectionExpectSuccess();135136 const treasuryBalanceAfter = new BigNumber((await api.query.system.account(Treasury)).data.free.toString());137 const aliceBalanceAfter = new BigNumber((await api.query.system.account(alicesPublicKey)).data.free.toString());138 const fee = aliceBalanceBefore.minus(aliceBalanceAfter);139 const treasuryIncrease = treasuryBalanceAfter.minus(treasuryBalanceBefore);140141 expect(treasuryIncrease.toFixed()).to.be.equal(fee.toFixed());142 });143 });144145 it('Fees are sane', async () => {146 await usingApi(async (api) => {147 await skipInflationBlock(api);148 await waitNewBlocks(api, 1);149150 const aliceBalanceBefore = new BigNumber((await api.query.system.account(alicesPublicKey)).data.free.toString());151152 await createCollectionExpectSuccess();153154 const aliceBalanceAfter = new BigNumber((await api.query.system.account(alicesPublicKey)).data.free.toString());155 const fee = aliceBalanceBefore.minus(aliceBalanceAfter);156157 expect(fee.dividedBy(1e15).toNumber()).to.be.lessThan(saneMaximumFee + createCollectionDeposit);158 expect(fee.dividedBy(1e15).toNumber()).to.be.greaterThan(saneMinimumFee + createCollectionDeposit);159 });160 });161162 it('NFT Transfer fee is close to 0.1 Unique', async () => {163 await usingApi(async (api) => {164 await skipInflationBlock(api);165 await waitNewBlocks(api, 1);166167 const collectionId = await createCollectionExpectSuccess();168 const tokenId = await createItemExpectSuccess(alice, collectionId, 'NFT');169170 const aliceBalanceBefore = new BigNumber((await api.query.system.account(alicesPublicKey)).data.free.toString());171 await transferExpectSuccess(collectionId, tokenId, alice, bob, 1, 'NFT');172 const aliceBalanceAfter = new BigNumber((await api.query.system.account(alicesPublicKey)).data.free.toString());173 const fee = aliceBalanceBefore.minus(aliceBalanceAfter);174175 176 const expectedTransferFee = 0.1;177 const tolerance = 0.001;178 expect(fee.dividedBy(1e15).minus(expectedTransferFee).abs().toNumber()).to.be.lessThan(tolerance);179 });180 });181182});183