aboutsummaryrefslogtreecommitdiffstats
path: root/test/exchange_wrapper_test.ts
blob: c0d5b292b7b4cda5bdd5f0cc6cc12e080c059eb9 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
import 'mocha';
import * as chai from 'chai';
import {web3Factory} from './utils/web3_factory';
import {ZeroEx} from '../src/0x.js';
import promisify = require('es6-promisify');
import * as _ from 'lodash';
import {BlockchainLifecycle} from './utils/blockchain_lifecycle';
import * as BigNumber from 'bignumber.js';
import {orderFactory} from './utils/order';
import {Token} from '../src/types';
import * as Web3 from 'web3';
import * as dirtyChai from 'dirty-chai';
import ChaiBigNumber = require('chai-bignumber');

chai.use(dirtyChai);
chai.use(ChaiBigNumber());
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle();

describe('ExchangeWrapper', () => {
    let zeroEx: ZeroEx;
    let userAddresses: string[];
    let web3: Web3;
    before(async () => {
        web3 = web3Factory.create();
        zeroEx = new ZeroEx(web3);
        userAddresses = await promisify(web3.eth.getAccounts)();
        web3.eth.defaultAccount = userAddresses[0];
    });
    beforeEach(async () => {
        await blockchainLifecycle.startAsync();
    });
    afterEach(async () => {
        await blockchainLifecycle.revertAsync();
    });
    describe('#isValidSignatureAsync', () => {
        // The Exchange smart contract `isValidSignature` method only validates orderHashes and assumes
        // the length of the data is exactly 32 bytes. Thus for these tests, we use data of this size.
        const dataHex = '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0';
        const signature = {
            v: 27,
            r: '0x61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc33',
            s: '0x40349190569279751135161d22529dc25add4f6069af05be04cacbda2ace2254',
        };
        const address = '0x5409ed021d9299bf6814279a6a1411a7e866a631';
        describe('should throw if passed a malformed signature', () => {
            it('malformed v', async () => {
                const malformedSignature = {
                    v: 34,
                    r: signature.r,
                    s: signature.s,
                };
                expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address))
                    .to.be.rejected;
            });
            it('r lacks 0x prefix', () => {
                const malformedR = signature.r.replace('0x', '');
                const malformedSignature = {
                    v: signature.v,
                    r: malformedR,
                    s: signature.s,
                };
                expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address))
                    .to.be.rejected;
            });
            it('r is too short', () => {
                const malformedR = signature.r.substr(10);
                const malformedSignature = {
                    v: signature.v,
                    r: malformedR,
                    s: signature.s.replace('0', 'z'),
                };
                expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address))
                    .to.be.rejected;
            });
            it('s is not hex', () => {
                const malformedS = signature.s.replace('0', 'z');
                const malformedSignature = {
                    v: signature.v,
                    r: signature.r,
                    s: malformedS,
                };
                expect(zeroEx.exchange.isValidSignatureAsync(dataHex, malformedSignature, address))
                    .to.be.rejected;
            });
        });
        it('should return false if the data doesn\'t pertain to the signature & address', async () => {
            const isValid = await zeroEx.exchange.isValidSignatureAsync('0x0', signature, address);
            expect(isValid).to.be.false;
        });
        it('should return false if the address doesn\'t pertain to the signature & dataHex', async () => {
            const validUnrelatedAddress = '0x8b0292B11a196601eD2ce54B665CaFEca0347D42';
            const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, signature, validUnrelatedAddress);
            expect(isValid).to.be.false;
        });
        it('should return false if the signature doesn\'t pertain to the dataHex & address', async () => {
            const wrongSignature = {...signature, v: 28};
            const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, wrongSignature, address);
            expect(isValid).to.be.false;
        });
        it('should return true if the signature does pertain to the dataHex & address', async () => {
            const isValid = await zeroEx.exchange.isValidSignatureAsync(dataHex, signature, address);
            expect(isValid).to.be.true;
        });
    });
    describe('#fillOrderAsync', () => {
        let tokens: Token[];
        const addressBySymbol: {[symbol: string]: string} = {};
        let networkId: number;
        const setBalance = async (toAddress: string,
                                  amountInBaseUnits: BigNumber.BigNumber|number,
                                  tokenAddress: string) => {
            const amount = _.isNumber(amountInBaseUnits) ? new BigNumber(amountInBaseUnits) : amountInBaseUnits;
            await zeroEx.token.transferAsync(tokenAddress, userAddresses[0], toAddress, amount);
        };
        const setAllowance = async (ownerAddress: string,
                                    amountInBaseUnits: BigNumber.BigNumber|number,
                                    tokenAddress: string) => {
            const amount = _.isNumber(amountInBaseUnits) ? new BigNumber(amountInBaseUnits) : amountInBaseUnits;
            await zeroEx.token.setProxyAllowanceAsync(tokenAddress, ownerAddress, amount);
        };
        before('fetch tokens', async () => {
            tokens = await zeroEx.tokenRegistry.getTokensAsync();
            _.forEach(tokens, token => {
                addressBySymbol[token.symbol] = token.address;
            });
            networkId = await promisify(web3.version.getNetwork)();
        });
        describe('failed fills', () => {
            it('should throw when the fill amount is zero', async () => {
                const signedOrder = await orderFactory.createSignedOrderAsync(zeroEx, networkId, userAddresses[0],
                    5, addressBySymbol.MLN, 5, addressBySymbol.GNT);
                const fillAmount = new BigNumber(0);
                expect(zeroEx.exchange.fillOrderAsync(signedOrder, fillAmount))
                    .to.be.rejectedWith('This order has already been filled or cancelled');
            });
        });
        describe('successful fills', () => {
            afterEach('reset default account', () => {
               zeroEx.setDefaultAccount(userAddresses[0]);
            });
            it('should fill the valid order', async () => {
                const maker = userAddresses[0];
                const taker = userAddresses[1];
                await setAllowance(maker, 5, addressBySymbol.MLN);
                await setBalance(taker, 5, addressBySymbol.GNT);
                await setAllowance(taker, 5, addressBySymbol.GNT);
                const signedOrder = await orderFactory.createSignedOrderAsync(zeroEx, networkId, maker,
                    5, addressBySymbol.MLN, 5, addressBySymbol.GNT);
                const fillAmount = new BigNumber(5);
                expect(await zeroEx.token.getBalanceAsync(addressBySymbol.MLN, maker)).to.be.bignumber.greaterThan(5);
                expect(await zeroEx.token.getBalanceAsync(addressBySymbol.MLN, taker)).to.be.bignumber.equal(0);
                expect(await zeroEx.token.getBalanceAsync(addressBySymbol.GNT, taker)).to.be.bignumber.equal(5);
                expect(await zeroEx.token.getProxyAllowanceAsync(addressBySymbol.MLN, maker)).to.be.bignumber.equal(5);
                expect(await zeroEx.token.getProxyAllowanceAsync(addressBySymbol.GNT, taker)).to.be.bignumber.equal(5);
                zeroEx.setDefaultAccount(taker);
                await zeroEx.exchange.fillOrderAsync(signedOrder, fillAmount);
                expect(await zeroEx.token.getBalanceAsync(addressBySymbol.MLN, taker)).to.be.bignumber.equal(5);
                expect(await zeroEx.token.getBalanceAsync(addressBySymbol.GNT, taker)).to.be.bignumber.equal(0);
            });
        });
    });
});