playwright/tests/tracing.spec.ts

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/**
* 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.
*/
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import { expect, contextTest as test, browserTest } from './config/browserTest';
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import { ZipFileSystem } from 'playwright-core/lib/utils/vfs';
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import jpeg from 'jpeg-js';
test.skip(({ trace }) => !!trace);
test('should collect trace with resources, but no js', async ({ context, page, server }, testInfo) => {
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await context.tracing.start({ screenshots: true, snapshots: true });
await page.goto(server.PREFIX + '/frames/frame.html');
await page.setContent('<button>Click</button>');
await page.click('"Click"');
await page.mouse.move(20, 20);
await page.mouse.dblclick(30, 30);
await page.keyboard.insertText('abc');
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await page.waitForTimeout(2000); // Give it some time to produce screenshots.
await page.close();
await context.tracing.stop({ path: testInfo.outputPath('trace.zip') });
const { events } = await parseTrace(testInfo.outputPath('trace.zip'));
expect(events[0].type).toBe('context-options');
expect(events.find(e => e.metadata?.apiName === 'page.goto')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'page.setContent')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'page.click')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'mouse.move')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'mouse.dblclick')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'keyboard.insertText')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'page.close')).toBeTruthy();
expect(events.some(e => e.type === 'frame-snapshot')).toBeTruthy();
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expect(events.some(e => e.type === 'screencast-frame')).toBeTruthy();
const style = events.find(e => e.type === 'resource-snapshot' && e.snapshot.request.url.endsWith('style.css'));
expect(style).toBeTruthy();
expect(style.snapshot.response.content._sha1).toBeTruthy();
const script = events.find(e => e.type === 'resource-snapshot' && e.snapshot.request.url.endsWith('script.js'));
expect(script).toBeTruthy();
expect(script.snapshot.response.content._sha1).toBe(undefined);
});
test('should not collect snapshots by default', async ({ context, page, server }, testInfo) => {
await context.tracing.start();
await page.goto(server.EMPTY_PAGE);
await page.setContent('<button>Click</button>');
await page.click('"Click"');
await page.close();
await context.tracing.stop({ path: testInfo.outputPath('trace.zip') });
const { events } = await parseTrace(testInfo.outputPath('trace.zip'));
expect(events.some(e => e.type === 'frame-snapshot')).toBeFalsy();
expect(events.some(e => e.type === 'resource-snapshot')).toBeFalsy();
});
test('should exclude internal pages', async ({ browserName, context, page, server }, testInfo) => {
test.fixme(true, 'https://github.com/microsoft/playwright/issues/6743');
await page.goto(server.EMPTY_PAGE);
await context.tracing.start();
await context.storageState();
await page.close();
await context.tracing.stop({ path: testInfo.outputPath('trace.zip') });
const trace = await parseTrace(testInfo.outputPath('trace.zip'));
const pageIds = new Set();
trace.events.forEach(e => {
const pageId = e.metadata?.pageId;
if (pageId)
pageIds.add(pageId);
});
expect(pageIds.size).toBe(1);
});
test('should collect two traces', async ({ context, page, server }, testInfo) => {
await context.tracing.start({ screenshots: true, snapshots: true });
await page.goto(server.EMPTY_PAGE);
await page.setContent('<button>Click</button>');
await page.click('"Click"');
await context.tracing.stop({ path: testInfo.outputPath('trace1.zip') });
await context.tracing.start({ screenshots: true, snapshots: true });
await page.dblclick('"Click"');
await page.close();
await context.tracing.stop({ path: testInfo.outputPath('trace2.zip') });
{
const { events } = await parseTrace(testInfo.outputPath('trace1.zip'));
expect(events[0].type).toBe('context-options');
expect(events.find(e => e.metadata?.apiName === 'page.goto')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'page.setContent')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'page.click')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'page.dblclick')).toBeFalsy();
expect(events.find(e => e.metadata?.apiName === 'page.close')).toBeFalsy();
}
{
const { events } = await parseTrace(testInfo.outputPath('trace2.zip'));
expect(events[0].type).toBe('context-options');
expect(events.find(e => e.metadata?.apiName === 'page.goto')).toBeFalsy();
expect(events.find(e => e.metadata?.apiName === 'page.setContent')).toBeFalsy();
expect(events.find(e => e.metadata?.apiName === 'page.click')).toBeFalsy();
expect(events.find(e => e.metadata?.apiName === 'page.dblclick')).toBeTruthy();
expect(events.find(e => e.metadata?.apiName === 'page.close')).toBeTruthy();
}
});
test('should not stall on dialogs', async ({ page, context, server }) => {
await context.tracing.start({ screenshots: true, snapshots: true });
await page.goto(server.EMPTY_PAGE);
page.on('dialog', async dialog => {
await dialog.accept();
});
await page.evaluate(() => {
confirm('are you sure');
});
await context.tracing.stop();
});
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for (const params of [
{
id: 'fit',
width: 500,
height: 500,
},
{
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id: 'crop',
width: 400, // Less than 450 to test firefox
height: 800,
},
{
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id: 'scale',
width: 1024,
height: 768,
}
]) {
browserTest(`should produce screencast frames ${params.id}`, async ({ video, contextFactory, browserName, platform, headless }, testInfo) => {
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browserTest.fixme(browserName === 'chromium' && video, 'Same screencast resolution conflicts');
browserTest.fixme(browserName === 'chromium' && !headless, 'Chromium screencast on headed has a min width issue');
browserTest.fixme(params.id === 'fit' && browserName === 'chromium' && platform === 'darwin', 'High DPI maxes image at 600x600');
browserTest.fixme(params.id === 'fit' && browserName === 'webkit' && platform === 'linux', 'Image size is flaky');
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const scale = Math.min(800 / params.width, 600 / params.height, 1);
const previewWidth = params.width * scale;
const previewHeight = params.height * scale;
const context = await contextFactory({ viewport: { width: params.width, height: params.height } });
await context.tracing.start({ screenshots: true, snapshots: true });
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const page = await context.newPage();
// Make sure we have a chance to paint.
for (let i = 0; i < 10; ++i) {
await page.setContent('<body style="box-sizing: border-box; width: 100%; height: 100%; margin:0; background: red; border: 50px solid blue"></body>');
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await page.evaluate(() => new Promise(requestAnimationFrame));
}
await context.tracing.stop({ path: testInfo.outputPath('trace.zip') });
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const { events, resources } = await parseTrace(testInfo.outputPath('trace.zip'));
const frames = events.filter(e => e.type === 'screencast-frame');
// Check all frame sizes.
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for (const frame of frames) {
expect(frame.width).toBe(params.width);
expect(frame.height).toBe(params.height);
const buffer = resources.get('resources/' + frame.sha1);
const image = jpeg.decode(buffer);
expect(image.width).toBe(previewWidth);
expect(image.height).toBe(previewHeight);
}
const frame = frames[frames.length - 1]; // pick last frame.
const buffer = resources.get('resources/' + frame.sha1);
const image = jpeg.decode(buffer);
expect(image.data.byteLength).toBe(previewWidth * previewHeight * 4);
expectRed(image.data, previewWidth * previewHeight * 4 / 2 + previewWidth * 4 / 2); // center is red
expectBlue(image.data, previewWidth * 5 * 4 + previewWidth * 4 / 2); // top
expectBlue(image.data, previewWidth * (previewHeight - 5) * 4 + previewWidth * 4 / 2); // bottom
expectBlue(image.data, previewWidth * previewHeight * 4 / 2 + 5 * 4); // left
expectBlue(image.data, previewWidth * previewHeight * 4 / 2 + (previewWidth - 5) * 4); // right
});
}
test('should include interrupted actions', async ({ context, page, server }, testInfo) => {
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await context.tracing.start({ screenshots: true, snapshots: true });
await page.goto(server.EMPTY_PAGE);
await page.setContent('<button>Click</button>');
page.click('"ClickNoButton"').catch(() => {});
await context.tracing.stop({ path: testInfo.outputPath('trace.zip') });
await context.close();
const { events } = await parseTrace(testInfo.outputPath('trace.zip'));
const clickEvent = events.find(e => e.metadata?.apiName === 'page.click');
expect(clickEvent).toBeTruthy();
expect(clickEvent.metadata.error.error.message).toBe('Action was interrupted');
});
test('should throw when starting with different options', async ({ context }) => {
await context.tracing.start({ screenshots: true, snapshots: true });
const error = await context.tracing.start({ screenshots: false, snapshots: false }).catch(e => e);
expect(error.message).toContain('Tracing has been already started with different options');
});
test('should throw when stopping without start', async ({ context }, testInfo) => {
const error = await context.tracing.stop({ path: testInfo.outputPath('trace.zip') }).catch(e => e);
expect(error.message).toContain('Must start tracing before stopping');
});
test('should not throw when stopping without start but not exporting', async ({ context }, testInfo) => {
await context.tracing.stop();
});
test('should work with multiple chunks', async ({ context, page, server }, testInfo) => {
await context.tracing.start({ screenshots: true, snapshots: true });
await page.goto(server.PREFIX + '/frames/frame.html');
await context.tracing.startChunk();
await page.setContent('<button>Click</button>');
await page.click('"Click"');
page.click('"ClickNoButton"').catch(() => {});
await context.tracing.stopChunk({ path: testInfo.outputPath('trace.zip') });
await context.tracing.startChunk();
await page.hover('"Click"');
await context.tracing.stopChunk({ path: testInfo.outputPath('trace2.zip') });
const trace1 = await parseTrace(testInfo.outputPath('trace.zip'));
expect(trace1.events[0].type).toBe('context-options');
expect(trace1.events.find(e => e.metadata?.apiName === 'page.goto')).toBeFalsy();
expect(trace1.events.find(e => e.metadata?.apiName === 'page.setContent')).toBeTruthy();
expect(trace1.events.find(e => e.metadata?.apiName === 'page.click' && !!e.metadata.error)).toBeTruthy();
expect(trace1.events.find(e => e.metadata?.apiName === 'page.hover')).toBeFalsy();
expect(trace1.events.find(e => e.metadata?.apiName === 'page.click' && e.metadata?.error?.error?.message === 'Action was interrupted')).toBeTruthy();
expect(trace1.events.some(e => e.type === 'frame-snapshot')).toBeTruthy();
expect(trace1.events.some(e => e.type === 'resource-snapshot' && e.snapshot.request.url.endsWith('style.css'))).toBeTruthy();
const trace2 = await parseTrace(testInfo.outputPath('trace2.zip'));
expect(trace2.events[0].type).toBe('context-options');
expect(trace2.events.find(e => e.metadata?.apiName === 'page.goto')).toBeFalsy();
expect(trace2.events.find(e => e.metadata?.apiName === 'page.setContent')).toBeFalsy();
expect(trace2.events.find(e => e.metadata?.apiName === 'page.click')).toBeFalsy();
expect(trace2.events.find(e => e.metadata?.apiName === 'page.hover')).toBeTruthy();
expect(trace2.events.some(e => e.type === 'frame-snapshot')).toBeTruthy();
expect(trace2.events.some(e => e.type === 'resource-snapshot' && e.snapshot.request.url.endsWith('style.css'))).toBeTruthy();
});
test('should export trace concurrently to second navigation', async ({ context, page, server }, testInfo) => {
for (let timeout = 0; timeout < 200; timeout += 20) {
await context.tracing.start({ screenshots: true, snapshots: true });
await page.goto(server.PREFIX + '/grid.html');
// Navigate to the same page to produce the same trace resources
// that might be concurrently exported.
const promise = page.goto(server.PREFIX + '/grid.html');
await page.waitForTimeout(timeout);
await Promise.all([
promise,
context.tracing.stop({ path: testInfo.outputPath('trace.zip') }),
]);
}
});
test('should not hang for clicks that open dialogs', async ({ context, page }) => {
await context.tracing.start({ screenshots: true, snapshots: true });
const dialogPromise = page.waitForEvent('dialog');
await page.setContent(`<div onclick='window.alert(123)'>Click me</div>`);
await page.click('div', { timeout: 2000 }).catch(() => {});
const dialog = await dialogPromise;
await dialog.dismiss();
await context.tracing.stop();
});
async function parseTrace(file: string): Promise<{ events: any[], resources: Map<string, Buffer> }> {
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const zipFS = new ZipFileSystem(file);
const resources = new Map<string, Buffer>();
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for (const entry of await zipFS.entries())
resources.set(entry, await zipFS.read(entry));
zipFS.close();
const events = [];
for (const line of resources.get('trace.trace').toString().split('\n')) {
if (line)
events.push(JSON.parse(line));
}
for (const line of resources.get('trace.network').toString().split('\n')) {
if (line)
events.push(JSON.parse(line));
}
return {
events,
resources,
};
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}
function expectRed(pixels: Buffer, offset: number) {
const r = pixels.readUInt8(offset);
const g = pixels.readUInt8(offset + 1);
const b = pixels.readUInt8(offset + 2);
const a = pixels.readUInt8(offset + 3);
expect(r).toBeGreaterThan(200);
expect(g).toBeLessThan(70);
expect(b).toBeLessThan(70);
expect(a).toBe(255);
}
function expectBlue(pixels: Buffer, offset: number) {
const r = pixels.readUInt8(offset);
const g = pixels.readUInt8(offset + 1);
const b = pixels.readUInt8(offset + 2);
const a = pixels.readUInt8(offset + 3);
expect(r).toBeLessThan(70);
expect(g).toBeLessThan(70);
expect(b).toBeGreaterThan(200);
expect(a).toBe(255);
}