playwright/tests/library/chromium/tracing.spec.ts
2022-03-25 16:05:50 -07:00

93 lines
3.7 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 { browserTest as it, expect } from '../../config/browserTest';
import fs from 'fs';
import path from 'path';
it('should output a trace', async ({ browser, server }, testInfo) => {
const page = await browser.newPage();
const outputTraceFile = testInfo.outputPath(path.join(`trace.json`));
await browser.startTracing(page, { screenshots: true, path: outputTraceFile });
await page.goto(server.PREFIX + '/grid.html');
await browser.stopTracing();
expect(fs.existsSync(outputTraceFile)).toBe(true);
await page.close();
});
it('should create directories as needed', async ({ browser, server }, testInfo) => {
const page = await browser.newPage();
const filePath = testInfo.outputPath(path.join('these', 'are', 'directories', 'trace.json'));
await browser.startTracing(page, { screenshots: true, path: filePath });
await page.goto(server.PREFIX + '/grid.html');
await browser.stopTracing();
expect(fs.existsSync(filePath)).toBe(true);
await page.close();
});
it('should run with custom categories if provided', async ({ browser }, testInfo) => {
const page = await browser.newPage();
const outputTraceFile = testInfo.outputPath(path.join(`trace.json`));
await browser.startTracing(page, { path: outputTraceFile, categories: ['disabled-by-default-v8.cpu_profiler.hires'] });
await browser.stopTracing();
const traceJson = JSON.parse(fs.readFileSync(outputTraceFile).toString());
expect(traceJson.metadata['trace-config']).toContain('disabled-by-default-v8.cpu_profiler.hires');
await page.close();
});
it('should throw if tracing on two pages', async ({ browser }, testInfo) => {
const page = await browser.newPage();
const outputTraceFile = testInfo.outputPath(path.join(`trace.json`));
await browser.startTracing(page, { path: outputTraceFile });
const newPage = await browser.newPage();
let error = null;
await browser.startTracing(newPage, { path: outputTraceFile }).catch(e => error = e);
await newPage.close();
expect(error).toBeTruthy();
await browser.stopTracing();
await page.close();
});
it('should return a buffer', async ({ browser, server }, testInfo) => {
const page = await browser.newPage();
const outputTraceFile = testInfo.outputPath(path.join(`trace.json`));
await browser.startTracing(page, { screenshots: true, path: outputTraceFile });
await page.goto(server.PREFIX + '/grid.html');
const trace = await browser.stopTracing();
const buf = fs.readFileSync(outputTraceFile);
expect(trace.toString()).toEqual(buf.toString());
await page.close();
});
it('should work without options', async ({ browser, server }) => {
const page = await browser.newPage();
await browser.startTracing(page);
await page.goto(server.PREFIX + '/grid.html');
const trace = await browser.stopTracing();
expect(trace).toBeTruthy();
await page.close();
});
it('should support a buffer without a path', async ({ browser, server }) => {
const page = await browser.newPage();
await browser.startTracing(page, { screenshots: true });
await page.goto(server.PREFIX + '/grid.html');
const trace = await browser.stopTracing();
expect(trace.toString()).toContain('screenshot');
await page.close();
});