124 lines
4.1 KiB
TypeScript
124 lines
4.1 KiB
TypeScript
import { Web3Wrapper } from '@0xproject/web3-wrapper';
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import * as chai from 'chai';
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import * as _ from 'lodash';
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import 'mocha';
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import * as Sinon from 'sinon';
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import * as Web3 from 'web3';
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import { LogEvent } from '../src';
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import { EventWatcher } from '../src/order_watcher/event_watcher';
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import { DoneCallback } from '../src/types';
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import { chaiSetup } from './utils/chai_setup';
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import { web3Factory } from './utils/web3_factory';
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chaiSetup.configure();
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const expect = chai.expect;
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describe('EventWatcher', () => {
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let web3: Web3;
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let stubs: Sinon.SinonStub[] = [];
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let eventWatcher: EventWatcher;
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let web3Wrapper: Web3Wrapper;
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const logA: Web3.LogEntry = {
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address: '0x71d271f8b14adef568f8f28f1587ce7271ac4ca5',
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blockHash: null,
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blockNumber: null,
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data: '',
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logIndex: null,
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topics: [],
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transactionHash: '0x004881d38cd4a8f72f1a0d68c8b9b8124504706041ff37019c1d1ed6bfda8e17',
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transactionIndex: 0,
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};
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const logB: Web3.LogEntry = {
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address: '0x8d12a197cb00d4747a1fe03395095ce2a5cc6819',
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blockHash: null,
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blockNumber: null,
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data: '',
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logIndex: null,
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topics: ['0xf341246adaac6f497bc2a656f546ab9e182111d630394f0c57c710a59a2cb567'],
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transactionHash: '0x01ef3c048b18d9b09ea195b4ed94cf8dd5f3d857a1905ff886b152cfb1166f25',
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transactionIndex: 0,
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};
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const logC: Web3.LogEntry = {
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address: '0x1d271f8b174adef58f1587ce68f8f27271ac4ca5',
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blockHash: null,
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blockNumber: null,
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data: '',
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logIndex: null,
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topics: ['0xf341246adaac6f497bc2a656f546ab9e182111d630394f0c57c710a59a2cb567'],
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transactionHash: '0x01ef3c048b18d9b09ea195b4ed94cf8dd5f3d857a1905ff886b152cfb1166f25',
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transactionIndex: 0,
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};
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before(async () => {
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web3 = web3Factory.create();
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const pollingIntervalMs = 10;
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web3Wrapper = new Web3Wrapper(web3.currentProvider);
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eventWatcher = new EventWatcher(web3Wrapper, pollingIntervalMs);
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});
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afterEach(() => {
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// clean up any stubs after the test has completed
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_.each(stubs, s => s.restore());
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stubs = [];
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eventWatcher.unsubscribe();
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});
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it('correctly emits initial log events', (done: DoneCallback) => {
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const logs: Web3.LogEntry[] = [logA, logB];
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const expectedLogEvents = [
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{
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removed: false,
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...logA,
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},
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{
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removed: false,
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...logB,
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},
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];
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const getLogsStub = Sinon.stub(web3Wrapper, 'getLogsAsync');
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getLogsStub.onCall(0).returns(logs);
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stubs.push(getLogsStub);
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const callback = (event: LogEvent) => {
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const expectedLogEvent = expectedLogEvents.shift();
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expect(event).to.be.deep.equal(expectedLogEvent);
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if (_.isEmpty(expectedLogEvents)) {
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done();
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}
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};
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eventWatcher.subscribe(callback);
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});
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it('correctly computes the difference and emits only changes', (done: DoneCallback) => {
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const initialLogs: Web3.LogEntry[] = [logA, logB];
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const changedLogs: Web3.LogEntry[] = [logA, logC];
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const expectedLogEvents = [
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{
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removed: false,
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...logA,
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},
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{
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removed: false,
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...logB,
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},
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{
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removed: true,
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...logB,
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},
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{
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removed: false,
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...logC,
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},
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];
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const getLogsStub = Sinon.stub(web3Wrapper, 'getLogsAsync');
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getLogsStub.onCall(0).returns(initialLogs);
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getLogsStub.onCall(1).returns(changedLogs);
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stubs.push(getLogsStub);
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const callback = (event: LogEvent) => {
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const expectedLogEvent = expectedLogEvents.shift();
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expect(event).to.be.deep.equal(expectedLogEvent);
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if (_.isEmpty(expectedLogEvents)) {
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done();
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}
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};
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eventWatcher.subscribe(callback);
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});
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});
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