114 lines
5.4 KiB
TypeScript
114 lines
5.4 KiB
TypeScript
import {
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chaiSetup,
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constants,
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expectTransactionFailedAsync,
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provider,
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txDefaults,
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web3Wrapper,
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} from '@0x/contracts-test-utils';
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import { DummyERC20TokenContract } from '@0x/contracts-erc20';
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import { BlockchainLifecycle } from '@0x/dev-utils';
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import { RevertReason } from '@0x/types';
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import { BigNumber } from '@0x/utils';
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import * as chai from 'chai';
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import { LogWithDecodedArgs } from 'ethereum-types';
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import * as _ from 'lodash';
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import { StakingWrapper } from './utils/staking_wrapper';
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import { ERC20Wrapper, ERC20ProxyContract } from '@0x/contracts-asset-proxy';
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chaiSetup.configure();
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const expect = chai.expect;
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const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
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// tslint:disable:no-unnecessary-type-assertion
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describe('Staking Core', () => {
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// constants
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const ZRX_TOKEN_DECIMALS = new BigNumber(18);
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// tokens & addresses
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let owner: string;
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let stakers: string[];
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let makers: string[];
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let delegators: string[];
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let zrxTokenContract: DummyERC20TokenContract;
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let erc20ProxyContract: ERC20ProxyContract;
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// wrappers
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let stakingWrapper: StakingWrapper;
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let erc20Wrapper: ERC20Wrapper;
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// tests
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before(async () => {
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await blockchainLifecycle.startAsync();
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});
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after(async () => {
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await blockchainLifecycle.revertAsync();
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});
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before(async () => {
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// create accounts
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const accounts = await web3Wrapper.getAvailableAddressesAsync();
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owner = accounts[0];
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stakers = accounts.slice(1);
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// deploy erc20 proxy
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erc20Wrapper = new ERC20Wrapper(provider, stakers, owner);
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erc20ProxyContract = await erc20Wrapper.deployProxyAsync();
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// deploy zrx token
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[zrxTokenContract] = await erc20Wrapper.deployDummyTokensAsync(1, ZRX_TOKEN_DECIMALS);
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await erc20Wrapper.setBalancesAndAllowancesAsync();
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// deploy staking contracts
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stakingWrapper = new StakingWrapper(provider, owner, erc20ProxyContract, zrxTokenContract);
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await stakingWrapper.deployAndConfigureContracts();
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});
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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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describe('end-to-end tests', () => {
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it('staking/unstaking', async () => {
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///// 1/3 SETUP TEST PARAMETERS /////
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const amountToStake = stakingWrapper.toBaseUnitAmount(10);
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const amountToUnstake = stakingWrapper.toBaseUnitAmount(5);
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// check zrx token balances before minting stake
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const zrxTokenBalanceOfVaultBeforeStaking = await stakingWrapper.getZrxTokenBalanceOfZrxVault();
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expect(zrxTokenBalanceOfVaultBeforeStaking).to.be.bignumber.equal(new BigNumber(0));
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const zrxTokenBalanceOfStakerBeforeStaking = await stakingWrapper.getZrxTokenBalance(stakers[0]);
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expect(zrxTokenBalanceOfStakerBeforeStaking).to.be.bignumber.gte(amountToStake);
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///// 2/3 STAKE ZRX /////
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{
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// mint stake
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const stakeMinted = await stakingWrapper.stake(stakers[0], amountToStake);
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expect(stakeMinted).to.be.bignumber.equal(amountToStake);
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// check stake balance after minting
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const stakeBalance = await stakingWrapper.getStakeBalance(stakers[0]);
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expect(stakeBalance).to.be.bignumber.equal(amountToStake);
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// check zrx vault balance
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const vaultBalance = await stakingWrapper.getZrxVaultBalance(stakers[0]);
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expect(vaultBalance).to.be.bignumber.equal(amountToStake);
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// check zrx token balances
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const zrxTokenBalanceOfVaultAfterStaking = await stakingWrapper.getZrxTokenBalanceOfZrxVault();
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expect(zrxTokenBalanceOfVaultAfterStaking).to.be.bignumber.equal(amountToStake);
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const zrxTokenBalanceOfStakerAfterStaking = await stakingWrapper.getZrxTokenBalance(stakers[0]);
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expect(zrxTokenBalanceOfStakerAfterStaking).to.be.bignumber.equal(zrxTokenBalanceOfStakerBeforeStaking.minus(amountToStake));
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}
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///// 3/3 UNSTAKE ZRX /////
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{
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// unstake
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const stakeBurned = await stakingWrapper.unstake(stakers[0], amountToUnstake);
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expect(stakeBurned).to.be.bignumber.equal(amountToUnstake);
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// check stake balance after burning
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const stakeBalance = await stakingWrapper.getStakeBalance(stakers[0]);
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expect(stakeBalance).to.be.bignumber.equal(amountToStake.minus(amountToUnstake));
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// check zrx vault balance
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const vaultBalance = await stakingWrapper.getZrxVaultBalance(stakers[0]);
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expect(vaultBalance).to.be.bignumber.equal(amountToStake.minus(amountToUnstake));
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// check zrx token balances
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const zrxTokenBalanceOfVaultAfterStaking = await stakingWrapper.getZrxTokenBalanceOfZrxVault();
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expect(zrxTokenBalanceOfVaultAfterStaking).to.be.bignumber.equal(amountToStake.minus(amountToUnstake));
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const zrxTokenBalanceOfStakerAfterStaking = await stakingWrapper.getZrxTokenBalance(stakers[0]);
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expect(zrxTokenBalanceOfStakerAfterStaking).to.be.bignumber.equal(zrxTokenBalanceOfStakerBeforeStaking.minus(amountToStake).plus(amountToUnstake));
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}
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});
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});
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});
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// tslint:enable:no-unnecessary-type-assertion
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