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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
import 'mocha';
import * as _ from 'lodash';
import * as chai from 'chai';
import * as Web3 from 'web3';
import * as BigNumber from 'bignumber.js';
import * as dirtyChai from 'dirty-chai';
import ChaiBigNumber = require('chai-bignumber');
import promisify = require('es6-promisify');
import {web3Factory} from './utils/web3_factory';
import {ZeroEx} from '../src/0x.js';
import {BlockchainLifecycle} from './utils/blockchain_lifecycle';
import {orderFactory} from './utils/order_factory';
import {FillOrderValidationErrs, Token, SignedOrder} from '../src/types';
import {FillScenarios} from './utils/fill_scenarios';
chai.use(dirtyChai);
chai.use(ChaiBigNumber());
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle();
const NON_EXISTENT_ORDER_HASH = '0x79370342234e7acd6bbeac335bd3bb1d368383294b64b8160a00f4060e4d3777';
describe('ExchangeWrapper', () => {
let zeroEx: ZeroEx;
let userAddresses: string[];
let web3: Web3;
let tokens: Token[];
let fillScenarios: FillScenarios;
before(async () => {
web3 = web3Factory.create();
zeroEx = new ZeroEx(web3);
userAddresses = await promisify(web3.eth.getAccounts)();
tokens = await zeroEx.tokenRegistry.getTokensAsync();
fillScenarios = new FillScenarios(zeroEx, userAddresses, tokens);
});
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 makerTokenAddress: string;
let takerTokenAddress: string;
let takerAddress: string;
const fillTakerAmountInBaseUnits = new BigNumber(5);
const shouldCheckTransfer = false;
before('fetch tokens', async () => {
takerAddress = userAddresses[1];
const [makerToken, takerToken] = tokens;
makerTokenAddress = makerToken.address;
takerTokenAddress = takerToken.address;
});
afterEach('reset default account', () => {
zeroEx.setTransactionSenderAccount(userAddresses[0]);
});
describe('failed fills', () => {
it('should throw when the fill amount is zero', async () => {
const fillableAmount = new BigNumber(5);
const signedOrder = await fillScenarios.createAFillableSignedOrderAsync(
makerTokenAddress, takerTokenAddress, takerAddress, fillableAmount,
);
const zeroFillAmount = new BigNumber(0);
zeroEx.setTransactionSenderAccount(takerAddress);
expect(zeroEx.exchange.fillOrderAsync(signedOrder, zeroFillAmount, shouldCheckTransfer))
.to.be.rejectedWith(FillOrderValidationErrs.FILL_AMOUNT_IS_ZERO);
});
it('should throw when sender is not a taker', async () => {
const fillableAmount = new BigNumber(5);
const signedOrder = await fillScenarios.createAFillableSignedOrderAsync(
makerTokenAddress, takerTokenAddress, takerAddress, fillableAmount,
);
expect(zeroEx.exchange.fillOrderAsync(signedOrder, fillTakerAmountInBaseUnits, shouldCheckTransfer))
.to.be.rejectedWith(FillOrderValidationErrs.NOT_A_TAKER);
});
it('should throw when order is expired', async () => {
const expirationInPast = new BigNumber(42);
const fillableAmount = new BigNumber(5);
const signedOrder = await fillScenarios.createAFillableSignedOrderAsync(
makerTokenAddress, takerTokenAddress, takerAddress, fillableAmount, expirationInPast,
);
zeroEx.setTransactionSenderAccount(takerAddress);
expect(zeroEx.exchange.fillOrderAsync(signedOrder, fillTakerAmountInBaseUnits, shouldCheckTransfer))
.to.be.rejectedWith(FillOrderValidationErrs.EXPIRED);
});
it('should throw when taker balance is less than fill amount', async () => {
const fillableAmount = new BigNumber(5);
const signedOrder = await fillScenarios.createAFillableSignedOrderAsync(
makerTokenAddress, takerTokenAddress, takerAddress, fillableAmount,
);
zeroEx.setTransactionSenderAccount(takerAddress);
const moreThanTheBalance = new BigNumber(6);
expect(zeroEx.exchange.fillOrderAsync(signedOrder, moreThanTheBalance, shouldCheckTransfer))
.to.be.rejectedWith(FillOrderValidationErrs.NOT_ENOUGH_TAKER_BALANCE);
});
});
describe('successful fills', () => {
it('should fill the valid order', async () => {
const fillableAmount = new BigNumber(5);
const signedOrder = await fillScenarios.createAFillableSignedOrderAsync(
makerTokenAddress, takerTokenAddress, takerAddress, fillableAmount,
);
zeroEx.setTransactionSenderAccount(takerAddress);
expect(await zeroEx.token.getBalanceAsync(makerTokenAddress, takerAddress))
.to.be.bignumber.equal(0);
expect(await zeroEx.token.getBalanceAsync(takerTokenAddress, takerAddress))
.to.be.bignumber.equal(fillTakerAmountInBaseUnits);
await zeroEx.exchange.fillOrderAsync(signedOrder, fillTakerAmountInBaseUnits, shouldCheckTransfer);
expect(await zeroEx.token.getBalanceAsync(makerTokenAddress, takerAddress))
.to.be.bignumber.equal(fillTakerAmountInBaseUnits);
expect(await zeroEx.token.getBalanceAsync(takerTokenAddress, takerAddress))
.to.be.bignumber.equal(0);
});
});
});
describe('tests that require partially filled order', () => {
let makerTokenAddress: string;
let takerTokenAddress: string;
let takerAddress: string;
let fillableAmount: BigNumber.BigNumber;
let partialFillAmount: BigNumber.BigNumber;
let signedOrder: SignedOrder;
before(() => {
takerAddress = userAddresses[1];
const [makerToken, takerToken] = tokens;
makerTokenAddress = makerToken.address;
takerTokenAddress = takerToken.address;
});
beforeEach(async () => {
fillableAmount = new BigNumber(5);
partialFillAmount = new BigNumber(2);
signedOrder = await fillScenarios.createPartiallyFilledSignedOrderAsync(
makerTokenAddress, takerTokenAddress, takerAddress, fillableAmount, partialFillAmount,
);
});
describe('#getUnavailableTakerAmountAsync', () => {
it ('should throw if passed an invalid orderHash', async () => {
const invalidOrderHashHex = '0x123';
expect(zeroEx.exchange.getUnavailableTakerAmountAsync(invalidOrderHashHex)).to.be.rejected();
});
it ('should return zero if passed a valid but non-existent orderHash', async () => {
const unavailableValueT = await zeroEx.exchange.getUnavailableTakerAmountAsync(NON_EXISTENT_ORDER_HASH);
expect(unavailableValueT).to.be.bignumber.equal(0);
});
it ('should return the unavailableValueT for a valid and partially filled orderHash', async () => {
const orderHash = await zeroEx.getOrderHashHexAsync(signedOrder);
const unavailableValueT = await zeroEx.exchange.getUnavailableTakerAmountAsync(orderHash);
expect(unavailableValueT).to.be.bignumber.equal(partialFillAmount);
});
});
describe('#getFilledTakerAmountAsync', () => {
it ('should throw if passed an invalid orderHash', async () => {
const invalidOrderHashHex = '0x123';
expect(zeroEx.exchange.getFilledTakerAmountAsync(invalidOrderHashHex)).to.be.rejected();
});
it ('should return zero if passed a valid but non-existent orderHash', async () => {
const filledValueT = await zeroEx.exchange.getFilledTakerAmountAsync(NON_EXISTENT_ORDER_HASH);
expect(filledValueT).to.be.bignumber.equal(0);
});
it ('should return the filledValueT for a valid and partially filled orderHash', async () => {
const orderHash = await zeroEx.getOrderHashHexAsync(signedOrder);
const filledValueT = await zeroEx.exchange.getFilledTakerAmountAsync(orderHash);
expect(filledValueT).to.be.bignumber.equal(partialFillAmount);
});
});
describe('#getCanceledTakerAmountAsync', () => {
it ('should throw if passed an invalid orderHash', async () => {
const invalidOrderHashHex = '0x123';
expect(zeroEx.exchange.getCanceledTakerAmountAsync(invalidOrderHashHex)).to.be.rejected();
});
it ('should return zero if passed a valid but non-existent orderHash', async () => {
const cancelledValueT = await zeroEx.exchange.getCanceledTakerAmountAsync(NON_EXISTENT_ORDER_HASH);
expect(cancelledValueT).to.be.bignumber.equal(0);
});
it ('should return the cancelledValueT for a valid and partially filled orderHash', async () => {
const orderHash = await zeroEx.getOrderHashHexAsync(signedOrder);
const cancelledValueT = await zeroEx.exchange.getCanceledTakerAmountAsync(orderHash);
expect(cancelledValueT).to.be.bignumber.equal(0);
});
});
});
});
|
