167 lines
		
	
	
		
			8.7 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			167 lines
		
	
	
		
			8.7 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
import { ContractWrappers } from '@0xproject/contract-wrappers';
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import { BlockchainLifecycle } from '@0xproject/dev-utils';
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import { BigNumber } from '@0xproject/utils';
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import * as chai from 'chai';
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import * as _ from 'lodash';
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import 'make-promises-safe';
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import 'mocha';
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import { ApprovalContractEventArgs, LogWithDecodedArgs, TokenEvents, ZeroEx } from '../src';
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import { chaiSetup } from './utils/chai_setup';
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import { constants } from './utils/constants';
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import { TokenUtils } from './utils/token_utils';
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import { provider, web3Wrapper } from './utils/web3_wrapper';
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const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
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chaiSetup.configure();
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const expect = chai.expect;
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describe('ZeroEx library', () => {
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    let zeroEx: ZeroEx;
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    before(async () => {
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        const config = {
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            networkId: constants.TESTRPC_NETWORK_ID,
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        };
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        zeroEx = new ZeroEx(provider, config);
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    });
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    describe('#setProvider', () => {
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        it('overrides provider in nested web3s and invalidates contractInstances', async () => {
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            // Instantiate the contract instances with the current provider
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            await (zeroEx.exchange as any)._getExchangeContractAsync();
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            await (zeroEx.tokenRegistry as any)._getTokenRegistryContractAsync();
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            expect((zeroEx.exchange as any)._exchangeContractIfExists).to.not.be.undefined();
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            expect((zeroEx.tokenRegistry as any)._tokenRegistryContractIfExists).to.not.be.undefined();
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            // Add property to newProvider so that we can differentiate it from old provider
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            (provider as any).zeroExTestId = 1;
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            zeroEx.setProvider(provider, constants.TESTRPC_NETWORK_ID);
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            // Check that contractInstances with old provider are removed after provider update
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            expect((zeroEx.exchange as any)._exchangeContractIfExists).to.be.undefined();
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            expect((zeroEx.tokenRegistry as any)._tokenRegistryContractIfExists).to.be.undefined();
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            // Check that all nested zeroExContract/web3Wrapper instances return the updated provider
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            const nestedWeb3WrapperProvider = ((zeroEx as any)._contractWrappers as ContractWrappers).getProvider();
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            expect((nestedWeb3WrapperProvider as any).zeroExTestId).to.be.a('number');
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            const exchangeWeb3WrapperProvider = (zeroEx.exchange as any)._web3Wrapper.getProvider();
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            expect(exchangeWeb3WrapperProvider.zeroExTestId).to.be.a('number');
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            const tokenRegistryWeb3WrapperProvider = (zeroEx.tokenRegistry as any)._web3Wrapper.getProvider();
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            expect(tokenRegistryWeb3WrapperProvider.zeroExTestId).to.be.a('number');
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        });
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    });
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    describe('#isValidSignature', () => {
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        // The Exchange smart contract `isValidSignature` method only validates orderHashes and assumes
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        // the length of the data is exactly 32 bytes. Thus for these tests, we use data of this size.
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        const dataHex = '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0';
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        const signature = {
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            v: 27,
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            r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
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            s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
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        };
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        const address = '0x5409ed021d9299bf6814279a6a1411a7e866a631';
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        it("should return false if the data doesn't pertain to the signature & address", async () => {
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            return expect(
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                (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync('0x0', signature, address),
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            ).to.become(false);
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        });
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        it("should return false if the address doesn't pertain to the signature & data", async () => {
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            const validUnrelatedAddress = '0x8b0292b11a196601ed2ce54b665cafeca0347d42';
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            return expect(
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                (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync(
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                    dataHex,
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                    signature,
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                    validUnrelatedAddress,
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                ),
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            ).to.become(false);
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        });
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        it("should return false if the signature doesn't pertain to the dataHex & address", async () => {
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            const wrongSignature = _.assign({}, signature, { v: 28 });
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            return expect(
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                (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync(dataHex, wrongSignature, address),
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            ).to.become(false);
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        });
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        it('should return true if the signature does pertain to the dataHex & address', async () => {
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            return expect(
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                (zeroEx.exchange as any)._isValidSignatureUsingContractCallAsync(dataHex, signature, address),
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            ).to.become(true);
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        });
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    });
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    describe('#toUnitAmount', () => {
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        it('should throw if invalid baseUnit amount supplied as argument', () => {
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            const invalidBaseUnitAmount = new BigNumber(1000000000.4);
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            const decimals = 6;
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            expect(() => ZeroEx.toUnitAmount(invalidBaseUnitAmount, decimals)).to.throw(
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                'amount should be in baseUnits (no decimals), found value: 1000000000.4',
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            );
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        });
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        it('Should return the expected unit amount for the decimals passed in', () => {
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            const baseUnitAmount = new BigNumber(1000000000);
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            const decimals = 6;
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            const unitAmount = ZeroEx.toUnitAmount(baseUnitAmount, decimals);
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            const expectedUnitAmount = new BigNumber(1000);
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            expect(unitAmount).to.be.bignumber.equal(expectedUnitAmount);
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        });
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    });
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    describe('#toBaseUnitAmount', () => {
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        it('Should return the expected base unit amount for the decimals passed in', () => {
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            const unitAmount = new BigNumber(1000);
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            const decimals = 6;
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            const baseUnitAmount = ZeroEx.toBaseUnitAmount(unitAmount, decimals);
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            const expectedUnitAmount = new BigNumber(1000000000);
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            expect(baseUnitAmount).to.be.bignumber.equal(expectedUnitAmount);
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        });
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        it('should throw if unitAmount has more decimals then specified as the max decimal precision', () => {
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            const unitAmount = new BigNumber(0.823091);
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            const decimals = 5;
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            expect(() => ZeroEx.toBaseUnitAmount(unitAmount, decimals)).to.throw(
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                'Invalid unit amount: 0.823091 - Too many decimal places',
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            );
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        });
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    });
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    describe('#awaitTransactionMinedAsync', () => {
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        beforeEach(async () => {
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            await blockchainLifecycle.startAsync();
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        });
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        afterEach(async () => {
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            await blockchainLifecycle.revertAsync();
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        });
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        it('returns transaction receipt with decoded logs', async () => {
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            const availableAddresses = await zeroEx.getAvailableAddressesAsync();
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            const coinbase = availableAddresses[0];
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            const tokens = await zeroEx.tokenRegistry.getTokensAsync();
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            const tokenUtils = new TokenUtils(tokens);
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            const zrxTokenAddress = tokenUtils.getProtocolTokenOrThrow().address;
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            const proxyAddress = zeroEx.proxy.getContractAddress();
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            const txHash = await zeroEx.token.setUnlimitedProxyAllowanceAsync(zrxTokenAddress, coinbase);
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            const txReceiptWithDecodedLogs = await zeroEx.awaitTransactionMinedAsync(txHash);
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            // tslint:disable-next-line:no-unnecessary-type-assertion
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            const log = txReceiptWithDecodedLogs.logs[0] as LogWithDecodedArgs<ApprovalContractEventArgs>;
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            expect(log.event).to.be.equal(TokenEvents.Approval);
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            expect(log.args._owner).to.be.equal(coinbase);
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            expect(log.args._spender).to.be.equal(proxyAddress);
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            expect(log.args._value).to.be.bignumber.equal(zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS);
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        });
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    });
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    describe('#config', () => {
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        it('allows to specify exchange contract address', async () => {
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            const zeroExConfig = {
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                exchangeContractAddress: ZeroEx.NULL_ADDRESS,
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                networkId: constants.TESTRPC_NETWORK_ID,
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            };
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            const zeroExWithWrongExchangeAddress = new ZeroEx(provider, zeroExConfig);
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            expect(zeroExWithWrongExchangeAddress.exchange.getContractAddress()).to.be.equal(ZeroEx.NULL_ADDRESS);
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        });
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        it('allows to specify token registry token contract address', async () => {
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            const zeroExConfig = {
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                tokenRegistryContractAddress: ZeroEx.NULL_ADDRESS,
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                networkId: constants.TESTRPC_NETWORK_ID,
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            };
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            const zeroExWithWrongTokenRegistryAddress = new ZeroEx(provider, zeroExConfig);
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            expect(zeroExWithWrongTokenRegistryAddress.tokenRegistry.getContractAddress()).to.be.equal(
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                ZeroEx.NULL_ADDRESS,
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            );
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        });
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    });
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});
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