tokenbridge/oracle-e2e/test/ercToErc.js
2019-07-12 10:53:16 +02:00

102 lines
3.4 KiB
JavaScript

const Web3 = require('web3')
const assert = require('assert')
const promiseRetry = require('promise-retry')
const { user, ercToErcBridge, homeRPC, foreignRPC } = require('../../e2e-commons/constants.json')
const { ERC677_BRIDGE_TOKEN_ABI } = require('../../commons')
const { generateNewBlock } = require('../../e2e-commons/utils')
const homeWeb3 = new Web3(new Web3.providers.HttpProvider(homeRPC.URL))
const foreignWeb3 = new Web3(new Web3.providers.HttpProvider(foreignRPC.URL))
const HOME_BRIDGE_ADDRESS = ercToErcBridge.home
const FOREIGN_BRIDGE_ADDRESS = ercToErcBridge.foreign
const { toBN } = foreignWeb3.utils
homeWeb3.eth.accounts.wallet.add(user.privateKey)
foreignWeb3.eth.accounts.wallet.add(user.privateKey)
const erc20Token = new foreignWeb3.eth.Contract(
ERC677_BRIDGE_TOKEN_ABI,
ercToErcBridge.foreignToken
)
const erc677Token = new homeWeb3.eth.Contract(ERC677_BRIDGE_TOKEN_ABI, ercToErcBridge.homeToken)
describe('erc to erc', () => {
it('should convert tokens in foreign to tokens in home', async () => {
const balance = await erc20Token.methods.balanceOf(user.address).call()
assert(!toBN(balance).isZero(), 'Account should have tokens')
// send tokens to foreign bridge
await erc20Token.methods
.transfer(FOREIGN_BRIDGE_ADDRESS, homeWeb3.utils.toWei('0.01'))
.send({
from: user.address,
gas: '1000000'
})
.catch(e => {
console.error(e)
})
// Send a trivial transaction to generate a new block since the watcher
// is configured to wait 1 confirmation block
await generateNewBlock(foreignWeb3, user.address)
// check that balance increases
await promiseRetry(async retry => {
const balance = await erc677Token.methods.balanceOf(user.address).call()
if (toBN(balance).isZero()) {
retry()
}
})
})
it('should convert tokens in home to tokens in foreign', async () => {
const originalBalance = await erc20Token.methods.balanceOf(user.address).call()
// check that account has tokens in home chain
const balance = await erc677Token.methods.balanceOf(user.address).call()
assert(!toBN(balance).isZero(), 'Account should have tokens')
// send transaction to home bridge
const depositTx = await erc677Token.methods
.transferAndCall(HOME_BRIDGE_ADDRESS, homeWeb3.utils.toWei('0.01'), '0x')
.send({
from: user.address,
gas: '1000000'
})
.catch(e => {
console.error(e)
})
// Send a trivial transaction to generate a new block since the watcher
// is configured to wait 1 confirmation block
await generateNewBlock(homeWeb3, user.address)
// The bridge should create a new transaction with a CollectedSignatures
// event so we generate another trivial transaction
await promiseRetry(
async retry => {
const lastBlockNumber = await homeWeb3.eth.getBlockNumber()
if (lastBlockNumber >= depositTx.blockNumber + 2) {
await generateNewBlock(homeWeb3, user.address)
} else {
retry()
}
},
{
forever: true,
factor: 1,
minTimeout: 500
}
)
// check that balance increases
await promiseRetry(async retry => {
const balance = await erc20Token.methods.balanceOf(user.address).call()
if (toBN(balance).lte(toBN(originalBalance))) {
retry()
}
})
})
})