aboutsummaryrefslogtreecommitdiffstats
path: root/packages/contracts/test/ether_token.ts
blob: 5fa63f8ad8234d5a063cb1141b91aeba16c3225d (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
import { BlockchainLifecycle } from '@0xproject/dev-utils';
import { BigNumber } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import * as chai from 'chai';
import 'make-promises-safe';

import { WETH9Contract } from '../src/contract_wrappers/generated/weth9';
import { artifacts } from '../src/utils/artifacts';
import { expectInsufficientFundsAsync, expectRevertOrAlwaysFailingTransactionAsync } from '../src/utils/assertions';
import { chaiSetup } from '../src/utils/chai_setup';
import { constants } from '../src/utils/constants';
import { provider, txDefaults, web3Wrapper } from '../src/utils/web3_wrapper';

chaiSetup.configure();
const expect = chai.expect;
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);

describe('EtherToken', () => {
    let account: string;
    const gasPrice = Web3Wrapper.toBaseUnitAmount(new BigNumber(20), 9);
    let etherToken: WETH9Contract;

    before(async () => {
        await blockchainLifecycle.startAsync();
    });
    after(async () => {
        await blockchainLifecycle.revertAsync();
    });
    before(async () => {
        const accounts = await web3Wrapper.getAvailableAddressesAsync();
        account = accounts[0];

        etherToken = await WETH9Contract.deployFrom0xArtifactAsync(artifacts.EtherToken, provider, {
            gasPrice,
            ...txDefaults,
        });
    });
    beforeEach(async () => {
        await blockchainLifecycle.startAsync();
    });
    afterEach(async () => {
        await blockchainLifecycle.revertAsync();
    });
    describe('deposit', () => {
        it('should throw if caller attempts to deposit more Ether than caller balance', async () => {
            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
            const ethToDeposit = initEthBalance.plus(1);

            return expectInsufficientFundsAsync(etherToken.deposit.sendTransactionAsync({ value: ethToDeposit }));
        });

        it('should convert deposited Ether to wrapped Ether tokens', async () => {
            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
            const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);

            const ethToDeposit = new BigNumber(Web3Wrapper.toWei(new BigNumber(1)));

            const txHash = await etherToken.deposit.sendTransactionAsync({ value: ethToDeposit });
            const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
                txHash,
                constants.AWAIT_TRANSACTION_MINED_MS,
            );

            const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
            const finalEthTokenBalance = await etherToken.balanceOf.callAsync(account);

            expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
            expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
        });
    });

    describe('withdraw', () => {
        it('should throw if caller attempts to withdraw greater than caller balance', async () => {
            const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);
            const ethTokensToWithdraw = initEthTokenBalance.plus(1);

            return expectRevertOrAlwaysFailingTransactionAsync(
                etherToken.withdraw.sendTransactionAsync(ethTokensToWithdraw),
            );
        });

        it('should convert ether tokens to ether with sufficient balance', async () => {
            const ethToDeposit = new BigNumber(Web3Wrapper.toWei(new BigNumber(1)));
            await web3Wrapper.awaitTransactionSuccessAsync(
                await etherToken.deposit.sendTransactionAsync({ value: ethToDeposit }),
                constants.AWAIT_TRANSACTION_MINED_MS,
            );
            const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);
            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
            const ethTokensToWithdraw = initEthTokenBalance;
            expect(ethTokensToWithdraw).to.not.be.bignumber.equal(0);
            const txHash = await etherToken.withdraw.sendTransactionAsync(ethTokensToWithdraw, {
                gas: constants.MAX_ETHERTOKEN_WITHDRAW_GAS,
            });
            const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
                txHash,
                constants.AWAIT_TRANSACTION_MINED_MS,
            );

            const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
            const finalEthTokenBalance = await etherToken.balanceOf.callAsync(account);

            expect(finalEthBalance).to.be.bignumber.equal(
                initEthBalance.plus(ethTokensToWithdraw.minus(ethSpentOnGas)),
            );
            expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.minus(ethTokensToWithdraw));
        });
    });

    describe('fallback', () => {
        it('should convert sent ether to ether tokens', async () => {
            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
            const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);

            const ethToDeposit = Web3Wrapper.toBaseUnitAmount(new BigNumber(1), 18);

            const txHash = await web3Wrapper.sendTransactionAsync({
                from: account,
                to: etherToken.address,
                value: ethToDeposit,
                gasPrice,
            });

            const receipt = await web3Wrapper.awaitTransactionSuccessAsync(
                txHash,
                constants.AWAIT_TRANSACTION_MINED_MS,
            );

            const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
            const finalEthTokenBalance = await etherToken.balanceOf.callAsync(account);

            expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
            expect(finalEthTokenBalance).to.be.bignumber.equal(initEthTokenBalance.plus(ethToDeposit));
        });
    });
});