mirror of
https://github.com/microsoft/playwright.git
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142 lines
6.4 KiB
TypeScript
142 lines
6.4 KiB
TypeScript
/**
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* Copyright 2018 Google Inc. All rights reserved.
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* Modifications 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 { test as it, expect } from './pageTest';
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it.skip(({ isAndroid }) => isAndroid);
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it('should emulate type', async ({ page }) => {
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expect(await page.evaluate(() => matchMedia('screen').matches)).toBe(true);
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expect(await page.evaluate(() => matchMedia('print').matches)).toBe(false);
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await page.emulateMedia({ media: 'print' });
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expect(await page.evaluate(() => matchMedia('screen').matches)).toBe(false);
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expect(await page.evaluate(() => matchMedia('print').matches)).toBe(true);
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await page.emulateMedia({});
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expect(await page.evaluate(() => matchMedia('screen').matches)).toBe(false);
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expect(await page.evaluate(() => matchMedia('print').matches)).toBe(true);
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await page.emulateMedia({ media: null });
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expect(await page.evaluate(() => matchMedia('screen').matches)).toBe(true);
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expect(await page.evaluate(() => matchMedia('print').matches)).toBe(false);
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});
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it('should throw in case of bad media argument', async ({ page }) => {
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let error = null;
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// @ts-expect-error 'bad' is not a valid media type
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await page.emulateMedia({ media: 'bad' }).catch(e => error = e);
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expect(error.message).toContain('media: expected one of (screen|print|null)');
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});
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it('should emulate colorScheme should work', async ({ page }) => {
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await page.emulateMedia({ colorScheme: 'light' });
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches)).toBe(true);
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches)).toBe(false);
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await page.emulateMedia({ colorScheme: 'dark' });
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches)).toBe(true);
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches)).toBe(false);
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});
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it('should default to light', async ({ page }) => {
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches)).toBe(true);
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches)).toBe(false);
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await page.emulateMedia({ colorScheme: 'dark' });
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches)).toBe(true);
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches)).toBe(false);
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await page.emulateMedia({ colorScheme: null });
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches)).toBe(false);
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches)).toBe(true);
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});
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it('should throw in case of bad colorScheme argument', async ({ page }) => {
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let error = null;
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// @ts-expect-error 'bad' is not a valid media type
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await page.emulateMedia({ colorScheme: 'bad' }).catch(e => error = e);
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expect(error.message).toContain('colorScheme: expected one of (dark|light|no-preference|null)');
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});
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it('should work during navigation', async ({ page, server }) => {
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await page.emulateMedia({ colorScheme: 'light' });
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const navigated = page.goto(server.EMPTY_PAGE);
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for (let i = 0; i < 9; i++) {
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await Promise.all([
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page.emulateMedia({ colorScheme: (['dark', 'light'] as const)[i & 1] }),
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new Promise(f => setTimeout(f, 1)),
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]);
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}
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await navigated;
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expect(await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches)).toBe(true);
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});
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it('should change the actual colors in css', async ({ page }) => {
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await page.setContent(`
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<style>
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@media (prefers-color-scheme: dark) {
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div {
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background: black;
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color: white;
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}
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}
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@media (prefers-color-scheme: light) {
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div {
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background: white;
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color: black;
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}
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}
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</style>
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<div>Hello</div>
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`);
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function getBackgroundColor() {
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return page.$eval('div', div => window.getComputedStyle(div).backgroundColor);
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}
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await page.emulateMedia({ colorScheme: 'light' });
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expect(await getBackgroundColor()).toBe('rgb(255, 255, 255)');
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await page.emulateMedia({ colorScheme: 'dark' });
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expect(await getBackgroundColor()).toBe('rgb(0, 0, 0)');
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await page.emulateMedia({ colorScheme: 'light' });
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expect(await getBackgroundColor()).toBe('rgb(255, 255, 255)');
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});
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it('should emulate reduced motion', async ({ page }) => {
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expect(await page.evaluate(() => matchMedia('(prefers-reduced-motion: no-preference)').matches)).toBe(true);
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await page.emulateMedia({ reducedMotion: 'reduce' });
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expect(await page.evaluate(() => matchMedia('(prefers-reduced-motion: reduce)').matches)).toBe(true);
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expect(await page.evaluate(() => matchMedia('(prefers-reduced-motion: no-preference)').matches)).toBe(false);
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await page.emulateMedia({ reducedMotion: 'no-preference' });
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expect(await page.evaluate(() => matchMedia('(prefers-reduced-motion: reduce)').matches)).toBe(false);
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expect(await page.evaluate(() => matchMedia('(prefers-reduced-motion: no-preference)').matches)).toBe(true);
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await page.emulateMedia({ reducedMotion: null });
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});
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it('should emulate forcedColors ', async ({ page, browserName, isElectron }) => {
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it.skip(browserName === 'webkit', 'https://bugs.webkit.org/show_bug.cgi?id=225281');
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it.fixme(isElectron);
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expect(await page.evaluate(() => matchMedia('(forced-colors: none)').matches)).toBe(true);
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await page.emulateMedia({ forcedColors: 'none' });
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expect(await page.evaluate(() => matchMedia('(forced-colors: none)').matches)).toBe(true);
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expect(await page.evaluate(() => matchMedia('(forced-colors: active)').matches)).toBe(false);
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await page.emulateMedia({ forcedColors: 'active' });
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expect(await page.evaluate(() => matchMedia('(forced-colors: none)').matches)).toBe(false);
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expect(await page.evaluate(() => matchMedia('(forced-colors: active)').matches)).toBe(true);
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await page.emulateMedia({ forcedColors: null });
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expect(await page.evaluate(() => matchMedia('(forced-colors: none)').matches)).toBe(true);
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});
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