mirror of
https://github.com/microsoft/playwright.git
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266 lines
12 KiB
TypeScript
266 lines
12 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { contextTest, expect } from '../config/browserTest';
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import { InMemorySnapshotter } from '../../packages/playwright-core/lib/server/trace/test/inMemorySnapshotter';
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const it = contextTest.extend<{ snapshotter: InMemorySnapshotter }>({
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snapshotter: async ({ toImpl, context }, run) => {
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const snapshotter = new InMemorySnapshotter(toImpl(context));
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await snapshotter.initialize();
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await run(snapshotter);
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await snapshotter.dispose();
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},
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});
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it.describe('snapshots', () => {
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it('should collect snapshot', async ({ page, toImpl, snapshotter }) => {
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await page.setContent('<button>Hello</button>');
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot');
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expect(distillSnapshot(snapshot)).toBe('<BUTTON>Hello</BUTTON>');
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});
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it('should preserve BASE and other content on reset', async ({ page, toImpl, snapshotter, server }) => {
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await page.goto(server.EMPTY_PAGE);
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const snapshot1 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot1');
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const html1 = snapshot1.render().html;
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expect(html1).toContain(`<BASE href="${server.EMPTY_PAGE}"`);
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await snapshotter.reset();
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const snapshot2 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot2');
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const html2 = snapshot2.render().html;
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expect(html2.replace(`"snapshot2"`, `"snapshot1"`)).toEqual(html1);
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});
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it('should capture resources', async ({ page, toImpl, server, snapshotter }) => {
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await page.goto(server.EMPTY_PAGE);
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await page.route('**/style.css', route => {
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route.fulfill({ body: 'button { color: red; }', }).catch(() => {});
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});
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await page.setContent('<link rel="stylesheet" href="style.css"><button>Hello</button>');
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot');
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const resource = snapshot.resourceByUrl(`http://localhost:${server.PORT}/style.css`);
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expect(resource).toBeTruthy();
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});
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it('should collect multiple', async ({ page, toImpl, snapshotter }) => {
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await page.setContent('<button>Hello</button>');
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const snapshots = [];
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snapshotter.onSnapshotEvent(snapshot => snapshots.push(snapshot));
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await snapshotter.captureSnapshot(toImpl(page), 'snapshot1');
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await snapshotter.captureSnapshot(toImpl(page), 'snapshot2');
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expect(snapshots.length).toBe(2);
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});
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it('should respect inline CSSOM change', async ({ page, toImpl, snapshotter }) => {
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await page.setContent('<style>button { color: red; }</style><button>Hello</button>');
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const snapshot1 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot1');
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expect(distillSnapshot(snapshot1)).toBe('<STYLE>button { color: red; }</STYLE><BUTTON>Hello</BUTTON>');
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await page.evaluate(() => { (document.styleSheets[0].cssRules[0] as any).style.color = 'blue'; });
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const snapshot2 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot2');
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expect(distillSnapshot(snapshot2)).toBe('<STYLE>button { color: blue; }</STYLE><BUTTON>Hello</BUTTON>');
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});
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it('should respect node removal', async ({ page, toImpl, snapshotter }) => {
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await page.setContent('<div><button id="button1"></button><button id="button2"></button></div>');
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const snapshot1 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot1');
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expect(distillSnapshot(snapshot1)).toBe('<DIV><BUTTON id=\"button1\"></BUTTON><BUTTON id=\"button2\"></BUTTON></DIV>');
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await page.evaluate(() => document.getElementById('button2').remove());
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const snapshot2 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot2');
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expect(distillSnapshot(snapshot2)).toBe('<DIV><BUTTON id=\"button1\"></BUTTON></DIV>');
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});
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it('should respect attr removal', async ({ page, toImpl, snapshotter }) => {
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await page.setContent('<div id="div" attr1="1" attr2="2"></div>');
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const snapshot1 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot1');
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expect(distillSnapshot(snapshot1)).toBe('<DIV id=\"div\" attr1=\"1\" attr2=\"2\"></DIV>');
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await page.evaluate(() => document.getElementById('div').removeAttribute('attr2'));
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const snapshot2 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot2');
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expect(distillSnapshot(snapshot2)).toBe('<DIV id=\"div\" attr1=\"1\"></DIV>');
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});
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it('should have a custom doctype', async ({ page, server, toImpl, snapshotter }) => {
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await page.goto(server.EMPTY_PAGE);
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await page.setContent('<!DOCTYPE foo><body>hi</body>');
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot');
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expect(distillSnapshot(snapshot)).toBe('<!DOCTYPE foo>hi');
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});
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it('should replace meta charset attr that specifies charset', async ({ page, server, toImpl, snapshotter }) => {
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await page.goto(server.EMPTY_PAGE);
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await page.setContent('<meta charset="shift-jis" />');
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot');
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expect(distillSnapshot(snapshot)).toBe('<META charset="utf-8">');
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});
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it('should replace meta content attr that specifies charset', async ({ page, server, toImpl, snapshotter }) => {
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await page.goto(server.EMPTY_PAGE);
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await page.setContent('<meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS">');
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot');
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expect(distillSnapshot(snapshot)).toBe('<META http-equiv="Content-Type" content="text/html; charset=utf-8">');
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});
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it('should respect subresource CSSOM change', async ({ page, server, toImpl, snapshotter }) => {
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await page.goto(server.EMPTY_PAGE);
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await page.route('**/style.css', route => {
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route.fulfill({ body: 'button { color: red; }', }).catch(() => {});
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});
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await page.setContent('<link rel="stylesheet" href="style.css"><button>Hello</button>');
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const snapshot1 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot1');
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expect(distillSnapshot(snapshot1)).toBe('<LINK rel=\"stylesheet\" href=\"style.css\"><BUTTON>Hello</BUTTON>');
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await page.evaluate(() => { (document.styleSheets[0].cssRules[0] as any).style.color = 'blue'; });
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const snapshot2 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot1');
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const resource = snapshot2.resourceByUrl(`http://localhost:${server.PORT}/style.css`);
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expect((await snapshotter.resourceContentForTest(resource.response.content._sha1)).toString()).toBe('button { color: blue; }');
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});
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it('should capture frame', async ({ page, server, toImpl, browserName, snapshotter }) => {
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it.skip(browserName === 'firefox');
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await page.route('**/empty.html', route => {
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route.fulfill({
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body: '<frameset><frame src="frame.html"></frameset>',
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contentType: 'text/html'
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}).catch(() => {});
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});
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await page.route('**/frame.html', route => {
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route.fulfill({
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body: '<html><button>Hello iframe</button></html>',
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contentType: 'text/html'
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}).catch(() => {});
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});
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await page.goto(server.EMPTY_PAGE);
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for (let counter = 0; ; ++counter) {
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot' + counter);
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const text = distillSnapshot(snapshot).replace(/frame@[^"]+["]/, '<id>"');
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if (text === '<FRAMESET><FRAME __playwright_src__=\"/snapshot/<id>\"></FRAME></FRAMESET>')
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break;
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await page.waitForTimeout(250);
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}
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});
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it('should capture iframe', async ({ page, server, toImpl, browserName, snapshotter }) => {
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it.skip(browserName === 'firefox');
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await page.route('**/empty.html', route => {
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route.fulfill({
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body: '<iframe src="iframe.html"></iframe>',
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contentType: 'text/html'
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}).catch(() => {});
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});
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await page.route('**/iframe.html', route => {
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route.fulfill({
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body: '<html><button>Hello iframe</button></html>',
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contentType: 'text/html'
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}).catch(() => {});
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});
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await page.goto(server.EMPTY_PAGE);
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// Marking iframe hierarchy is racy, do not expect snapshot, wait for it.
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for (let counter = 0; ; ++counter) {
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot' + counter);
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const text = distillSnapshot(snapshot).replace(/frame@[^"]+["]/, '<id>"');
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if (text === '<IFRAME __playwright_src__=\"/snapshot/<id>\"></IFRAME>')
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break;
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await page.waitForTimeout(250);
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}
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});
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it('should capture snapshot target', async ({ page, toImpl, snapshotter }) => {
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await page.setContent('<button>Hello</button><button>World</button>');
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{
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const handle = await page.$('text=Hello');
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot', toImpl(handle));
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expect(distillSnapshot(snapshot, false /* distillTarget */)).toBe('<BUTTON __playwright_target__=\"snapshot\">Hello</BUTTON><BUTTON>World</BUTTON>');
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}
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{
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const handle = await page.$('text=World');
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot2', toImpl(handle));
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expect(distillSnapshot(snapshot, false /* distillTarget */)).toBe('<BUTTON __playwright_target__=\"snapshot\">Hello</BUTTON><BUTTON __playwright_target__=\"snapshot2\">World</BUTTON>');
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}
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});
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it('should collect on attribute change', async ({ page, toImpl, snapshotter }) => {
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await page.setContent('<button>Hello</button>');
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{
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot');
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expect(distillSnapshot(snapshot)).toBe('<BUTTON>Hello</BUTTON>');
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}
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const handle = await page.$('text=Hello')!;
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await handle.evaluate(element => element.setAttribute('data', 'one'));
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{
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot2');
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expect(distillSnapshot(snapshot)).toBe('<BUTTON data="one">Hello</BUTTON>');
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}
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await handle.evaluate(element => element.setAttribute('data', 'two'));
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{
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const snapshot = await snapshotter.captureSnapshot(toImpl(page), 'snapshot2');
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expect(distillSnapshot(snapshot)).toBe('<BUTTON data="two">Hello</BUTTON>');
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}
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});
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it('empty adopted style sheets should not prevent node refs', async ({ page, toImpl, snapshotter, browserName }) => {
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it.skip(browserName !== 'chromium', 'Constructed stylesheets are only in Chromium.');
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await page.setContent('<button>Hello</button>');
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await page.evaluate(() => {
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const sheet = new CSSStyleSheet();
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(document as any).adoptedStyleSheets = [sheet];
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const sheet2 = new CSSStyleSheet();
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for (const element of [document.createElement('div'), document.createElement('span')]) {
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const root = element.attachShadow({
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mode: 'open'
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});
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root.append('foo');
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(root as any).adoptedStyleSheets = [sheet2];
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document.body.appendChild(element);
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}
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});
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const renderer1 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot1');
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// Expect some adopted style sheets.
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expect(distillSnapshot(renderer1)).toContain('__playwright_style_sheet_');
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const renderer2 = await snapshotter.captureSnapshot(toImpl(page), 'snapshot2');
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const snapshot2 = renderer2.snapshot();
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// Second snapshot should be just a copy of the first one.
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expect(snapshot2.html).toEqual([[1, 13]]);
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});
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});
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function distillSnapshot(snapshot, distillTarget = true) {
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let { html } = snapshot.render();
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if (distillTarget)
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html = html.replace(/\s__playwright_target__="[^"]+"/g, '');
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return html
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.replace(/<style>\*,\*::before,\*::after { visibility: hidden }<\/style>/, '')
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.replace(/<script>[.\s\S]+<\/script>/, '')
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.replace(/<style>.*__playwright_target__.*?<\/style>/, '')
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.replace(/<BASE href="about:blank">/, '')
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.replace(/<BASE href="http:\/\/localhost:[\d]+\/empty.html">/, '')
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.replace(/<HTML>/, '')
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.replace(/<\/HTML>/, '')
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.replace(/<HEAD>/, '')
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.replace(/<\/HEAD>/, '')
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.replace(/<BODY>/, '')
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.replace(/<\/BODY>/, '').trim();
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}
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