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import { BlockchainLifecycle, devConstants } from '@0xproject/dev-utils';
import { LogWithDecodedArgs } from '@0xproject/types';
import { BigNumber } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import * as chai from 'chai';
import { MetacoinContract, TransferContractEventArgs } from '../src/contract_wrappers/metacoin';
import { chaiSetup } from './utils/chai_setup';
import { deployer } from './utils/deployer';
import { provider, web3Wrapper } from './utils/web3_wrapper';
chaiSetup.configure();
const { expect } = chai;
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
describe('Metacoin', () => {
let metacoin: MetacoinContract;
const ownerAddress = devConstants.TESTRPC_FIRST_ADDRESS;
const INITIAL_BALANCE = new BigNumber(10000);
before(async () => {
const metacoinInstance = await deployer.deployAsync('Metacoin');
web3Wrapper.abiDecoder.addABI(metacoinInstance.abi);
metacoin = new MetacoinContract(metacoinInstance.abi, metacoinInstance.address, provider);
});
beforeEach(async () => {
await blockchainLifecycle.startAsync();
});
afterEach(async () => {
await blockchainLifecycle.revertAsync();
});
describe('#constructor', () => {
it(`should initialy give ${INITIAL_BALANCE} tokens to the creator`, async () => {
const balance = await metacoin.balances.callAsync(ownerAddress);
expect(balance).to.be.bignumber.equal(INITIAL_BALANCE);
});
});
describe('#transfer', () => {
it(`should successfully transfer tokens`, async () => {
const ZERO_ADDRESS = '0x0000000000000000000000000000000000000000';
const amount = INITIAL_BALANCE.div(2);
const oldBalance = await metacoin.balances.callAsync(ZERO_ADDRESS);
expect(oldBalance).to.be.bignumber.equal(0);
const txHash = await metacoin.transfer.sendTransactionAsync(
{
to: ZERO_ADDRESS,
amount,
},
{ from: devConstants.TESTRPC_FIRST_ADDRESS },
);
const txReceipt = await web3Wrapper.awaitTransactionMinedAsync(txHash);
const transferLogs = txReceipt.logs[0] as LogWithDecodedArgs<TransferContractEventArgs>;
expect(transferLogs.args).to.be.deep.equal({
_to: ZERO_ADDRESS,
_from: devConstants.TESTRPC_FIRST_ADDRESS,
_value: amount,
});
const newBalance = await metacoin.balances.callAsync(ZERO_ADDRESS);
expect(newBalance).to.be.bignumber.equal(amount);
});
});
});
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