28797dee41
This CL migrates all the tests to TypeScript. The main benefits of this is that we start consuming our TypeScript definitions and therefore find errors in them. The act of migrating found some bugs in our definitions and now we can be sure to avoid them going forwards. You'll notice the addition of some `TODO`s in the code; I didn't want this CL to get any bigger than it already is but I intend to follow those up once this lands. It's mostly figuring out how to extend the `expect` types with our `toBeGolden` helpers and some other slight confusions with types that the tests exposed. Co-authored-by: Mathias Bynens <mathias@qiwi.be>
122 lines
3.8 KiB
TypeScript
122 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 fs from 'fs';
|
|
import path from 'path';
|
|
import expect from 'expect';
|
|
import { getTestState, describeChromeOnly } from './mocha-utils';
|
|
|
|
describeChromeOnly('Tracing', function () {
|
|
let outputFile;
|
|
let browser;
|
|
let page;
|
|
|
|
/* we manually manage the browser here as we want a new browser for each
|
|
* individual test, which isn't the default behaviour of getTestState()
|
|
*/
|
|
|
|
beforeEach(async () => {
|
|
const { defaultBrowserOptions, puppeteer } = getTestState();
|
|
browser = await puppeteer.launch(defaultBrowserOptions);
|
|
page = await browser.newPage();
|
|
outputFile = path.join(__dirname, 'assets', 'trace.json');
|
|
});
|
|
|
|
afterEach(async () => {
|
|
await browser.close();
|
|
browser = null;
|
|
page = null;
|
|
if (fs.existsSync(outputFile)) {
|
|
fs.unlinkSync(outputFile);
|
|
outputFile = null;
|
|
}
|
|
});
|
|
it('should output a trace', async () => {
|
|
const { server } = getTestState();
|
|
|
|
await page.tracing.start({ screenshots: true, path: outputFile });
|
|
await page.goto(server.PREFIX + '/grid.html');
|
|
await page.tracing.stop();
|
|
expect(fs.existsSync(outputFile)).toBe(true);
|
|
});
|
|
|
|
it('should run with custom categories if provided', async () => {
|
|
await page.tracing.start({
|
|
path: outputFile,
|
|
categories: ['disabled-by-default-v8.cpu_profiler.hires'],
|
|
});
|
|
await page.tracing.stop();
|
|
|
|
const traceJson = JSON.parse(
|
|
fs.readFileSync(outputFile, { encoding: 'utf8' })
|
|
);
|
|
expect(traceJson.metadata['trace-config']).toContain(
|
|
'disabled-by-default-v8.cpu_profiler.hires'
|
|
);
|
|
});
|
|
it('should throw if tracing on two pages', async () => {
|
|
await page.tracing.start({ path: outputFile });
|
|
const newPage = await browser.newPage();
|
|
let error = null;
|
|
await newPage.tracing
|
|
.start({ path: outputFile })
|
|
.catch((error_) => (error = error_));
|
|
await newPage.close();
|
|
expect(error).toBeTruthy();
|
|
await page.tracing.stop();
|
|
});
|
|
it('should return a buffer', async () => {
|
|
const { server } = getTestState();
|
|
|
|
await page.tracing.start({ screenshots: true, path: outputFile });
|
|
await page.goto(server.PREFIX + '/grid.html');
|
|
const trace = await page.tracing.stop();
|
|
const buf = fs.readFileSync(outputFile);
|
|
expect(trace.toString()).toEqual(buf.toString());
|
|
});
|
|
it('should work without options', async () => {
|
|
const { server } = getTestState();
|
|
|
|
await page.tracing.start();
|
|
await page.goto(server.PREFIX + '/grid.html');
|
|
const trace = await page.tracing.stop();
|
|
expect(trace).toBeTruthy();
|
|
});
|
|
|
|
it('should return null in case of Buffer error', async () => {
|
|
const { server } = getTestState();
|
|
|
|
await page.tracing.start({ screenshots: true });
|
|
await page.goto(server.PREFIX + '/grid.html');
|
|
const oldBufferConcat = Buffer.concat;
|
|
Buffer.concat = () => {
|
|
throw 'error';
|
|
};
|
|
const trace = await page.tracing.stop();
|
|
expect(trace).toEqual(null);
|
|
Buffer.concat = oldBufferConcat;
|
|
});
|
|
|
|
it('should support a buffer without a path', async () => {
|
|
const { server } = getTestState();
|
|
|
|
await page.tracing.start({ screenshots: true });
|
|
await page.goto(server.PREFIX + '/grid.html');
|
|
const trace = await page.tracing.stop();
|
|
expect(trace.toString()).toContain('screenshot');
|
|
});
|
|
});
|