47 lines
1.8 KiB
TypeScript
47 lines
1.8 KiB
TypeScript
import { providers, Wallet, Contract } from 'ethers'
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import { deployContract } from 'ethereum-waffle'
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import { CHAIN_ID } from './constants'
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import { expandTo18Decimals } from './utilities'
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import ERC20 from '../../build/GenericERC20.json'
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import UniswapV2 from '../../build/UniswapV2.json'
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import UniswapV2Factory from '../../build/UniswapV2Factory.json'
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export interface FactoryFixture {
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bytecode: string
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factory: Contract
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}
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export async function factoryFixture(provider: providers.Web3Provider, [wallet]: Wallet[]): Promise<FactoryFixture> {
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const bytecode = `0x${UniswapV2.evm.bytecode.object}`
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const factory = await deployContract(wallet, UniswapV2Factory, [bytecode, CHAIN_ID], {
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gasLimit: (provider._web3Provider as any).options.gasLimit
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})
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return { bytecode, factory }
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}
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export interface ExchangeFixture extends FactoryFixture {
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token0: Contract
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token1: Contract
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exchange: Contract
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}
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export async function exchangeFixture(provider: providers.Web3Provider, [wallet]: Wallet[]): Promise<ExchangeFixture> {
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const { bytecode, factory } = await factoryFixture(provider, [wallet])
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const tokenA = await deployContract(wallet, ERC20, ['Mock Token A', 'MOCKA', 18, expandTo18Decimals(1000), CHAIN_ID])
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const tokenB = await deployContract(wallet, ERC20, ['Mock Token B', 'MOCKB', 18, expandTo18Decimals(1000), CHAIN_ID])
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await factory.createExchange(tokenA.address, tokenB.address)
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const exchangeAddress = await factory.getExchange(tokenA.address, tokenB.address)
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const exchange = new Contract(exchangeAddress, JSON.stringify(UniswapV2.abi), provider)
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const [token0Address] = await factory.getTokens(exchangeAddress)
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const token0 = tokenA.address === token0Address ? tokenA : tokenB
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const token1 = tokenA.address === token0Address ? tokenB : tokenA
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return { bytecode, factory, token0, token1, exchange }
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}
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