playwright/test/chromium/tracing.spec.ts
2020-10-12 09:16:02 -07:00

89 lines
3.8 KiB
TypeScript

/**
* Copyright 2017 Google Inc. All rights reserved.
*
* 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.
*/
import { folio } from '../fixtures';
import fs from 'fs';
import path from 'path';
import type { ChromiumBrowser } from '../..';
type TestState = {
outputTraceFile: string;
};
const fixtures = folio.extend<{}, TestState>();
fixtures.outputTraceFile.initTest(async ({ testInfo }, run) => {
await run(testInfo.outputPath(path.join(`trace.json`)));
});
const { it, expect, describe } = fixtures.build();
describe('oopif', (suite, { browserName }) => {
suite.skip(browserName !== 'chromium');
}, () => {
it('should output a trace', async ({browser, page, server, outputTraceFile}) => {
await (browser as ChromiumBrowser).startTracing(page, {screenshots: true, path: outputTraceFile});
await page.goto(server.PREFIX + '/grid.html');
await (browser as ChromiumBrowser).stopTracing();
expect(fs.existsSync(outputTraceFile)).toBe(true);
});
it('should create directories as needed', async ({browser, page, server, testInfo}) => {
const filePath = testInfo.outputPath(path.join('these', 'are', 'directories', 'trace.json'));
await (browser as ChromiumBrowser).startTracing(page, {screenshots: true, path: filePath});
await page.goto(server.PREFIX + '/grid.html');
await (browser as ChromiumBrowser).stopTracing();
expect(fs.existsSync(filePath)).toBe(true);
});
it('should run with custom categories if provided', async ({browser, page, outputTraceFile}) => {
await (browser as ChromiumBrowser).startTracing(page, {path: outputTraceFile, categories: ['disabled-by-default-v8.cpu_profiler.hires']});
await (browser as ChromiumBrowser).stopTracing();
const traceJson = JSON.parse(fs.readFileSync(outputTraceFile).toString());
expect(traceJson.metadata['trace-config']).toContain('disabled-by-default-v8.cpu_profiler.hires');
});
it('should throw if tracing on two pages', async ({browser, page, outputTraceFile}) => {
await (browser as ChromiumBrowser).startTracing(page, {path: outputTraceFile});
const newPage = await browser.newPage();
let error = null;
await (browser as ChromiumBrowser).startTracing(newPage, {path: outputTraceFile}).catch(e => error = e);
await newPage.close();
expect(error).toBeTruthy();
await (browser as ChromiumBrowser).stopTracing();
});
it('should return a buffer', async ({browser, page, server, outputTraceFile}) => {
await (browser as ChromiumBrowser).startTracing(page, {screenshots: true, path: outputTraceFile});
await page.goto(server.PREFIX + '/grid.html');
const trace = await (browser as ChromiumBrowser).stopTracing();
const buf = fs.readFileSync(outputTraceFile);
expect(trace.toString()).toEqual(buf.toString());
});
it('should work without options', async ({browser, page, server}) => {
await (browser as ChromiumBrowser).startTracing(page);
await page.goto(server.PREFIX + '/grid.html');
const trace = await (browser as ChromiumBrowser).stopTracing();
expect(trace).toBeTruthy();
});
it('should support a buffer without a path', async ({browser, page, server}) => {
await (browser as ChromiumBrowser).startTracing(page, {screenshots: true});
await page.goto(server.PREFIX + '/grid.html');
const trace = await (browser as ChromiumBrowser).stopTracing();
expect(trace.toString()).toContain('screenshot');
});
});