playwright/test/workers.spec.js

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/**
* Copyright 2017 Google Inc. All rights reserved.
* Modifications copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const utils = require('./utils');
const { waitEvent } = utils;
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/**
* @type {PageTestSuite}
*/
module.exports.describe = function({testRunner, expect, FFOX, CHROMIUM, WEBKIT, LINUX}) {
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const {describe, xdescribe, fdescribe} = testRunner;
const {it, fit, xit, dit} = testRunner;
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const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
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describe('Workers', function() {
// flaky: https://github.com/microsoft/playwright/pull/1297/checks?check_run_id=496348690
it.fail(FFOX && LINUX)('Page.workers', async function({page, server}) {
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await Promise.all([
page.waitForEvent('worker'),
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page.goto(server.PREFIX + '/worker/worker.html')]);
const worker = page.workers()[0];
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expect(worker.url()).toContain('worker.js');
expect(await worker.evaluate(() => self['workerFunction']())).toBe('worker function result');
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await page.goto(server.EMPTY_PAGE);
expect(page.workers().length).toBe(0);
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});
it('should emit created and destroyed events', async function({page}) {
const workerCreatedPromise = page.waitForEvent('worker');
const workerObj = await page.evaluateHandle(() => new Worker(URL.createObjectURL(new Blob(['1'], {type: 'application/javascript'}))));
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const worker = await workerCreatedPromise;
const workerThisObj = await worker.evaluateHandle(() => this);
const workerDestroyedPromise = new Promise(x => worker.once('close', x));
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await page.evaluate(workerObj => workerObj.terminate(), workerObj);
expect(await workerDestroyedPromise).toBe(worker);
const error = await workerThisObj.getProperty('self').catch(error => error);
expect(error.message).toContain('Most likely the worker has been closed.');
});
it('should report console logs', async function({page}) {
const [message] = await Promise.all([
waitEvent(page, 'console'),
page.evaluate(() => new Worker(URL.createObjectURL(new Blob(['console.log(1)'], {type: 'application/javascript'})))),
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]);
expect(message.text()).toBe('1');
});
it('should have JSHandles for console logs', async function({page}) {
const logPromise = new Promise(x => page.on('console', x));
await page.evaluate(() => new Worker(URL.createObjectURL(new Blob(['console.log(1,2,3,this)'], {type: 'application/javascript'}))));
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const log = await logPromise;
expect(log.text()).toBe('1 2 3 JSHandle@object');
expect(log.args().length).toBe(4);
expect(await (await log.args()[3].getProperty('origin')).jsonValue()).toBe('null');
});
it('should evaluate', async function({page}) {
const workerCreatedPromise = page.waitForEvent('worker');
page.evaluate(() => new Worker(URL.createObjectURL(new Blob(['console.log(1)'], {type: 'application/javascript'}))));
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const worker = await workerCreatedPromise;
expect(await worker.evaluate('1+1')).toBe(2);
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});
it('should report errors', async function({page}) {
const errorPromise = new Promise(x => page.on('pageerror', x));
page.evaluate(() => new Worker(URL.createObjectURL(new Blob([`setTimeout(() => { throw new Error('this is my error'); })`], {type: 'application/javascript'}))));
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const errorLog = await errorPromise;
expect(errorLog.message).toContain('this is my error');
});
it('should clear upon navigation', async function({server, page}) {
await page.goto(server.EMPTY_PAGE);
const workerCreatedPromise = page.waitForEvent('worker');
page.evaluate(() => new Worker(URL.createObjectURL(new Blob(['console.log(1)'], {type: 'application/javascript'}))));
const worker = await workerCreatedPromise;
expect(page.workers().length).toBe(1);
let destroyed = false;
worker.once('close', () => destroyed = true);
await page.goto(server.PREFIX + '/one-style.html');
expect(destroyed).toBe(true);
expect(page.workers().length).toBe(0);
});
it('should clear upon cross-process navigation', async function({server, page}) {
await page.goto(server.EMPTY_PAGE);
const workerCreatedPromise = page.waitForEvent('worker');
page.evaluate(() => new Worker(URL.createObjectURL(new Blob(['console.log(1)'], {type: 'application/javascript'}))));
const worker = await workerCreatedPromise;
expect(page.workers().length).toBe(1);
let destroyed = false;
worker.once('close', () => destroyed = true);
await page.goto(server.CROSS_PROCESS_PREFIX + '/empty.html');
expect(destroyed).toBe(true);
expect(page.workers().length).toBe(0);
});
// flaky: https://github.com/microsoft/playwright/pull/1277/checks?check_run_id=496461538
it.fail(FFOX && LINUX)('should report network activity', async function({page, server}) {
const [worker] = await Promise.all([
page.waitForEvent('worker'),
page.goto(server.PREFIX + '/worker/worker.html'),
]);
const url = server.PREFIX + '/one-style.css';
const requestPromise = page.waitForRequest(url);
const responsePromise = page.waitForResponse(url);
await worker.evaluate(url => fetch(url).then(response => response.text()).then(console.log), url);
const request = await requestPromise;
const response = await responsePromise;
expect(request.url()).toBe(url);
expect(response.request()).toBe(request);
expect(response.ok()).toBe(true);
});
it('should report network activity on worker creation', async function({page, server}) {
// Chromium needs waitForDebugger enabled for this one.
await page.goto(server.EMPTY_PAGE);
const url = server.PREFIX + '/one-style.css';
const requestPromise = page.waitForRequest(url);
const responsePromise = page.waitForResponse(url);
await page.evaluate(url => new Worker(URL.createObjectURL(new Blob([`
fetch("${url}").then(response => response.text()).then(console.log);
`], {type: 'application/javascript'}))), url);
const request = await requestPromise;
const response = await responsePromise;
expect(request.url()).toBe(url);
expect(response.request()).toBe(request);
expect(response.ok()).toBe(true);
});
false && it.fail(FFOX)('should report web socket activity', async function({page, server}) {
const [worker] = await Promise.all([
page.waitForEvent('worker'),
page.goto(server.PREFIX + '/worker/worker.html'),
]);
const log = [];
let socketClosed;
const socketClosePromise = new Promise(f => socketClosed = f);
page.on('websocket', ws => {
ws.on('open', () => log.push(`open<${ws.url()}>`));
ws.on('close', () => { log.push('close'); socketClosed(); });
});
worker.evaluate((port) => {
const ws = new WebSocket('ws://localhost:' + port + '/ws');
ws.addEventListener('open', () => ws.close());
}, server.PORT);
await socketClosePromise;
expect(log.join(':')).toBe(`open<ws://localhost:${server.PORT}/ws>:close`);
});
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});
};