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294 lines
11 KiB
TypeScript
294 lines
11 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 { it, expect, describe } from './fixtures';
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import { verifyViewport } from './utils';
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import path from 'path';
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import fs from 'fs';
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// Firefox headful produces a different image.
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describe('page screenshot', (suite, { browserName, headful }) => {
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suite.skip(browserName === 'firefox' && headful);
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}, () => {
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it('should work', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const screenshot = await page.screenshot();
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expect(screenshot).toMatchImage('screenshot-sanity.png');
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});
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it('should clip rect', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const screenshot = await page.screenshot({
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clip: {
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x: 50,
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y: 100,
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width: 150,
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height: 100
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}
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});
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expect(screenshot).toMatchImage('screenshot-clip-rect.png');
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});
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it('should clip rect with fullPage', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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await page.evaluate(() => window.scrollBy(150, 200));
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const screenshot = await page.screenshot({
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fullPage: true,
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clip: {
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x: 50,
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y: 100,
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width: 150,
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height: 100,
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},
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});
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expect(screenshot).toMatchImage('screenshot-clip-rect.png');
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});
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it('should clip elements to the viewport', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const screenshot = await page.screenshot({
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clip: {
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x: 50,
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y: 450,
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width: 1000,
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height: 100
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}
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});
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expect(screenshot).toMatchImage('screenshot-offscreen-clip.png');
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});
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it('should throw on clip outside the viewport', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const screenshotError = await page.screenshot({
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clip: {
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x: 50,
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y: 650,
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width: 100,
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height: 100
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}
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}).catch(error => error);
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expect(screenshotError.message).toContain('Clipped area is either empty or outside the resulting image');
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});
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it('should run in parallel', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const promises = [];
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for (let i = 0; i < 3; ++i) {
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promises.push(page.screenshot({
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clip: {
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x: 50 * i,
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y: 0,
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width: 50,
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height: 50
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}
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}));
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}
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const screenshots = await Promise.all(promises);
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expect(screenshots[1]).toMatchImage('grid-cell-1.png');
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});
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it('should take fullPage screenshots', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const screenshot = await page.screenshot({
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fullPage: true
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});
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expect(screenshot).toMatchImage('screenshot-grid-fullpage.png');
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});
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it('should restore viewport after fullPage screenshot', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const screenshot = await page.screenshot({ fullPage: true });
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expect(screenshot).toBeInstanceOf(Buffer);
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await verifyViewport(page, 500, 500);
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});
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it('should run in parallel in multiple pages', async ({server, context}) => {
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const N = 5;
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const pages = await Promise.all(Array(N).fill(0).map(async () => {
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const page = await context.newPage();
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await page.goto(server.PREFIX + '/grid.html');
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return page;
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}));
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const promises = [];
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for (let i = 0; i < N; ++i)
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promises.push(pages[i].screenshot({ clip: { x: 50 * (i % 2), y: 0, width: 50, height: 50 } }));
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const screenshots = await Promise.all(promises);
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for (let i = 0; i < N; ++i)
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expect(screenshots[i]).toMatchImage(`grid-cell-${i % 2}.png`);
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await Promise.all(pages.map(page => page.close()));
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});
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it('should allow transparency', (test, { browserName }) => {
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test.fail(browserName === 'firefox');
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}, async ({page}) => {
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await page.setViewportSize({ width: 50, height: 150 });
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await page.setContent(`
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<style>
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body { margin: 0 }
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div { width: 50px; height: 50px; }
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</style>
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<div style="background:black"></div>
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<div style="background:white"></div>
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<div style="background:transparent"></div>
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`);
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const screenshot = await page.screenshot({omitBackground: true});
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expect(screenshot).toMatchImage('transparent.png');
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});
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it('should render white background on jpeg file', async ({page, server}) => {
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await page.setViewportSize({ width: 100, height: 100 });
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await page.goto(server.EMPTY_PAGE);
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const screenshot = await page.screenshot({omitBackground: true, type: 'jpeg'});
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expect(screenshot).toMatchImage('white.jpg');
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});
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it('should work with odd clip size on Retina displays', async ({page}) => {
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const screenshot = await page.screenshot({
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clip: {
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x: 0,
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y: 0,
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width: 11,
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height: 11,
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}
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});
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expect(screenshot).toMatchImage('screenshot-clip-odd-size.png');
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});
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it('should work with a mobile viewport', (test, { browserName }) => {
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test.skip(browserName === 'firefox');
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}, async ({browser, server}) => {
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const context = await browser.newContext({ viewport: { width: 320, height: 480 }, isMobile: true });
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const page = await context.newPage();
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await page.goto(server.PREFIX + '/overflow.html');
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const screenshot = await page.screenshot();
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expect(screenshot).toMatchImage('screenshot-mobile.png');
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await context.close();
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});
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it('should work with a mobile viewport and clip', (test, { browserName }) => {
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test.skip(browserName === 'firefox');
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}, async ({browser, server}) => {
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const context = await browser.newContext({viewport: { width: 320, height: 480 }, isMobile: true});
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const page = await context.newPage();
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await page.goto(server.PREFIX + '/overflow.html');
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const screenshot = await page.screenshot({ clip: { x: 10, y: 10, width: 100, height: 150 } });
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expect(screenshot).toMatchImage('screenshot-mobile-clip.png');
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await context.close();
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});
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it('should work with a mobile viewport and fullPage', (test, { browserName }) => {
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test.skip(browserName === 'firefox');
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}, async ({browser, server}) => {
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const context = await browser.newContext({viewport: { width: 320, height: 480 }, isMobile: true});
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const page = await context.newPage();
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await page.goto(server.PREFIX + '/overflow-large.html');
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const screenshot = await page.screenshot({ fullPage: true });
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expect(screenshot).toMatchImage('screenshot-mobile-fullpage.png');
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await context.close();
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});
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it('should work for canvas', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/screenshots/canvas.html');
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const screenshot = await page.screenshot();
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expect(screenshot).toMatchImage('screenshot-canvas.png', { threshold: 0.3 });
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});
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it('should work for webgl', (test, { browserName }) => {
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test.fixme(browserName === 'firefox' || browserName === 'webkit');
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}, async ({page, server}) => {
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await page.setViewportSize({width: 640, height: 480});
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await page.goto(server.PREFIX + '/screenshots/webgl.html');
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const screenshot = await page.screenshot();
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expect(screenshot).toMatchImage('screenshot-webgl.png');
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});
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it('should work for translateZ', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/screenshots/translateZ.html');
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const screenshot = await page.screenshot();
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expect(screenshot).toMatchImage('screenshot-translateZ.png');
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});
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it('should work while navigating', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/redirectloop1.html');
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for (let i = 0; i < 10; i++) {
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const screenshot = await page.screenshot({ fullPage: true }).catch(e => {
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if (e.message.includes('Cannot take a screenshot while page is navigating'))
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return Buffer.from('');
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throw e;
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});
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expect(screenshot).toBeInstanceOf(Buffer);
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}
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});
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it('should work with device scale factor', async ({browser, server}) => {
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const context = await browser.newContext({ viewport: { width: 320, height: 480 }, deviceScaleFactor: 2 });
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const page = await context.newPage();
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await page.goto(server.PREFIX + '/grid.html');
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const screenshot = await page.screenshot();
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expect(screenshot).toMatchImage('screenshot-device-scale-factor.png');
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await context.close();
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});
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it('should work with iframe in shadow', async ({page, server}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid-iframe-in-shadow.html');
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expect(await page.screenshot()).toMatchImage('screenshot-iframe.png');
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});
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it('path option should work', async ({page, server, testInfo}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const outputPath = testInfo.outputPath('screenshot.png');
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await page.screenshot({path: outputPath});
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expect(await fs.promises.readFile(outputPath)).toMatchImage('screenshot-sanity.png');
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});
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it('path option should create subdirectories', async ({page, server, testInfo}) => {
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await page.setViewportSize({width: 500, height: 500});
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await page.goto(server.PREFIX + '/grid.html');
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const outputPath = testInfo.outputPath(path.join('these', 'are', 'directories', 'screenshot.png'));
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await page.screenshot({path: outputPath});
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expect(await fs.promises.readFile(outputPath)).toMatchImage('screenshot-sanity.png');
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});
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it('path option should detect jpeg', async ({page, server, testInfo}) => {
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await page.setViewportSize({ width: 100, height: 100 });
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await page.goto(server.EMPTY_PAGE);
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const outputPath = testInfo.outputPath('screenshot.jpg');
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const screenshot = await page.screenshot({omitBackground: true, path: outputPath});
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expect(await fs.promises.readFile(outputPath)).toMatchImage('white.jpg');
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expect(screenshot).toMatchImage('white.jpg');
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});
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it('path option should throw for unsupported mime type', async ({page}) => {
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const error = await page.screenshot({ path: 'file.txt' }).catch(e => e);
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expect(error.message).toContain('path: unsupported mime type "text/plain"');
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});
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});
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