task-test.js
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const { assert } = require('chai');
const sinon = require('sinon');
const Task = require('../src/task');
describe('Task', () => {
beforeEach(() => {
this.clock = sinon.useFakeTimers(new Date(2018, 0, 1, 0, 0, 0, 0));
});
afterEach(() => {
this.clock.restore();
});
it('should emit event on finish a task', async () => {
let finished = false;
let task = new Task(() => 'ok');
task.on('task-finished', () => finished = true);
await task.execute();
assert.equal(true, finished);
});
it('should emit event on error a task', async () => {
let error;
let task = new Task(() => {
throw Error('execution error');
});
task.on('task-failed', (err) => error = err.message);
await task.execute();
assert.equal('execution error', error);
});
it('should emit event on finish a promise task', async () => {
let finished = false;
const promise = () => new Promise((resolve) => resolve('ok'));
let task = new Task(promise);
task.on('task-finished', () => finished = true);
await task.execute();
assert.equal(true, finished);
});
it('should emit event on error a promise task', async () => {
let failed = false;
const promise = () => new Promise((resolve, reject) => reject('errou'));
const task = new Task(promise);
task.on('task-failed', (error) => failed = error);
await task.execute();
assert.equal('errou', failed);
});
});