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import { BlockchainLifecycle } from '@0xproject/dev-utils';
import { DoneCallback } from '@0xproject/types';
import * as _ from 'lodash';
import 'mocha';
import * as Sinon from 'sinon';
import {
ContractWrappers,
ContractWrappersConfig,
DecodedLogEvent,
ERC20TokenApprovalEventArgs,
ERC20TokenEvents,
} from '../src';
import { chaiSetup } from './utils/chai_setup';
import { constants } from './utils/constants';
import { migrateOnceAsync } from './utils/migrate';
import { tokenUtils } from './utils/token_utils';
import { provider, web3Wrapper } from './utils/web3_wrapper';
chaiSetup.configure();
const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
describe('SubscriptionTest', () => {
let contractWrappers: ContractWrappers;
let config: ContractWrappersConfig;
before(async () => {
const contractAddresses = await migrateOnceAsync();
config = {
networkId: constants.TESTRPC_NETWORK_ID,
contractAddresses,
};
contractWrappers = new ContractWrappers(provider, config);
});
beforeEach(async () => {
await blockchainLifecycle.startAsync();
});
afterEach(async () => {
await blockchainLifecycle.revertAsync();
});
describe('#subscribe', () => {
const indexFilterValues = {};
let tokenAddress: string;
let stubs: Sinon.SinonStub[] = [];
before(() => {
const tokenAddresses = tokenUtils.getDummyERC20TokenAddresses();
tokenAddress = tokenAddresses[0];
});
afterEach(() => {
contractWrappers.erc20Token.unsubscribeAll();
_.each(stubs, s => s.restore());
stubs = [];
});
it('Should allow unsubscribeAll to be called successfully after an error', (done: DoneCallback) => {
(async () => {
const callback = (err: Error | null, _logEvent?: DecodedLogEvent<ERC20TokenApprovalEventArgs>) =>
_.noop.bind(_);
contractWrappers.erc20Token.subscribe(
tokenAddress,
ERC20TokenEvents.Approval,
indexFilterValues,
callback,
);
stubs = [
Sinon.stub((contractWrappers as any)._web3Wrapper, 'getBlockIfExistsAsync').throws(
new Error('JSON RPC error'),
),
];
contractWrappers.erc20Token.unsubscribeAll();
done();
})().catch(done);
});
});
});
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