How to use createWhiteImage method in Playwright Internal

Best JavaScript code snippet using playwright-internal

lab1.js

Source: lab1.js Github

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...21 .fill()22 .grayscale();23 return blackImage;24 }25 #createWhiteImage() {26 const whiteImage = createImage("White");27 const whiteImageCtx = whiteImage.getContext("2d");28 const paintbrush = new Paintbrush(whiteImageCtx);29 paintbrush30 .fill(new Color(255, 255, 255))31 .grayscale();32 return whiteImage;33 }34 #createRedImage() {35 const redImage = createImage("Red");36 const redImageCtx = redImage.getContext("2d");37 const paintbrush = new Paintbrush(redImageCtx);38 paintbrush39 .fill(new Color(255, 0, 0));40 return redImage;41 }42 #createGradientImage() {43 const gradientImage = createImage("Gradient");44 const gradientImageCtx = gradientImage.getContext("2d");45 const paintbrush = new Paintbrush(gradientImageCtx);46 paintbrush47 .gradient();48 return gradientImage;49 }50 #createStarImages() {51 const starImage1 = createImage("Star 1");52 const starImage1Ctx = starImage1.getContext("2d");53 const lineDrawerV1 = new LineDrawerV1(starImage1Ctx);54 drawStar(lineDrawerV1);55 const starImage2 = createImage("Star 2");56 const starImage2Ctx = starImage2.getContext("2d");57 const lineDrawerV2 = new LineDrawerV2(starImage2Ctx);58 drawStar(lineDrawerV2);59 const starImage3 = createImage("Star 3");60 const starImage3Ctx = starImage3.getContext("2d");61 const lineDrawerV3 = new LineDrawerV3(starImage3Ctx);62 drawStar(lineDrawerV3);63 const starImage4 = createImage("Star 4");64 const starImage4Ctx = starImage4.getContext("2d");65 const lineDrawerV4 = new LineDrawerV4(starImage4Ctx);66 drawStar(lineDrawerV4);67 return [68 starImage1,69 starImage2,70 starImage3,71 starImage472 ]73 }74 #createVertexImage(objModel, config) {75 const vertexImage = createImage("Vertex Image", config.imageSize, config.imageSize);76 const vertexImageCtx = vertexImage.getContext("2d");77 const lineDrawerV4 = new LineDrawerV4(vertexImageCtx);78 drawVertexImage(79 lineDrawerV4,80 objModel,81 new BasicCoordTransformer(config)82 );83 return vertexImage;84 }85 #createPolygonImage(objModel, config) {86 const polygonImage = createImage("Polygon Image", config.imageSize, config.imageSize);87 const polygonImageCtx = polygonImage.getContext("2d");88 const lineDrawerV4 = new LineDrawerV4(polygonImageCtx);89 drawPolygonImage(90 lineDrawerV4,91 objModel,92 new BasicCoordTransformer(config)93 );94 return polygonImage;95 }96 run() {97 const handle = (objModel, config) => [98 this.#createVertexImage(objModel, config),99 this.#createPolygonImage(objModel, config)100 ];101 new ObjFileHandler(handle);102 this.#createBlackImage();103 this.#createWhiteImage();104 this.#createRedImage();105 this.#createGradientImage();106 this.#createStarImages();107 }...

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Using AI Code Generation

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1const { createWhiteImage } = require('playwright/​lib/​server/​chromium/​crPage');2const fs = require('fs');3(async () => {4 const image = await createWhiteImage(100, 100);5 fs.writeFileSync('white.png', image);6})();7const { createBlackImage } = require('playwright/​lib/​server/​chromium/​crPage');8const fs = require('fs');9(async () => {10 const image = await createBlackImage(100, 100);11 fs.writeFileSync('black.png', image);12})();13const { createTransparentImage } = require('playwright/​lib/​server/​chromium/​crPage');14const fs = require('fs');15(async () => {16 const image = await createTransparentImage(100, 100);17 fs.writeFileSync('transparent.png', image);18})();19const { createBlueImage } = require('playwright/​lib/​server/​chromium/​crPage');20const fs = require('fs');21(async () => {22 const image = await createBlueImage(100, 100);23 fs.writeFileSync('blue.png', image);24})();25const { createImage } = require('playwright/​lib/​server/​chromium/​crPage');26const fs = require('fs');27(async () => {28 const image = await createImage(100, 100, { color: { r: 255, g: 0, b: 0, a:

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Using AI Code Generation

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1const { createWhiteImage } = require('playwright/​lib/​server/​supplements/​recorder/​recorderApp');2const { PNG } = require('pngjs');3const fs = require('fs');4(async () => {5 const png = await createWhiteImage(100, 100);6 const image = PNG.sync.read(png);7 fs.writeFileSync('test.png', PNG.sync.write(image));8})();

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Using AI Code Generation

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1const { createWhiteImage } = require('playwright/​lib/​server/​supplements/​recorder/​recorderApp');2const path = require('path');3(async () => {4 const image = await createWhiteImage(100, 100);5 await image.write(path.join(__dirname, 'white.png'));6})();

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Using AI Code Generation

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1const { createWhiteImage } = require('playwright/​lib/​server/​browserContext');2const fs = require('fs');3(async () => {4 const image = await createWhiteImage(100, 100);5 fs.writeFileSync('image.png', image);6})();

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Using AI Code Generation

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1const { createWhiteImage } = require('playwright-core/​lib/​server/​supplements/​recorder/​recorderApp');2const fs = require('fs');3(async () => {4 const image = await createWhiteImage(300, 300);5 fs.writeFileSync('test.png', image);6})();

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Using AI Code Generation

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1const { createWhiteImage } = require('playwright/​lib/​server/​supplements/​recorder/​recorderUtils');2const fs = require('fs');3const path = require('path');4const imageBuffer = createWhiteImage(100, 100);5fs.writeFileSync(path.join(__dirname, 'white.png'), imageBuffer);6const { createWhiteImage } = require('playwright/​lib/​server/​supplements/​recorder/​recorderUtils');7const fs = require('fs');8const path = require('path');9const imageBuffer = createWhiteImage(100, 100);10fs.writeFileSync(path.join(__dirname, 'white.png'), imageBuffer);11const { createWhiteImage } = require('playwright/​lib/​server/​supplements/​recorder/​recorderUtils');12const fs = require('fs');13const path = require('path');14const imageBuffer = createWhiteImage(100, 100);15fs.writeFileSync(path.join(__dirname, 'white.png'), imageBuffer);16const { createWhiteImage } = require('playwright/​lib/​server/​supplements/​recorder/​recorderUtils');17const fs = require('fs');18const path = require('path');19const imageBuffer = createWhiteImage(100, 100);20fs.writeFileSync(path.join(__dirname, 'white.png'), imageBuffer);

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Using AI Code Generation

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1const { createWhiteImage } = require('playwright/​lib/​server/​screencast/​screencastFramesCollector');2const whiteImage = await createWhiteImage({ width: 100, height: 100 });3await page.screenshot({ path: 'white.png', clip: { x: 0, y: 0, width: 100, height: 100 } });4const page = await context.newPage();5await page.screenshot({ path: 'playwright.png' });6const context = await browser.newContext();7const browser = await playwright.chromium.launch();8const playwright = require('playwright');9const { test, expect } = require('@playwright/​test');10const { test, expect } = require('@playwright/​test');11const { chromium } = require('playwright');12test.use({ browserName: 'chromium', headless: false });13const { test, expect } = require('@playwright/​test');14const { chromium } = require('playwright');15test.use({ browserName: 'chromium', headless: false });16test.describe('Playwright', () => {17 test('should be able to launch a browser', async ({ page }) => {18 expect(await page.title()).toBe('Playwright');19 });20});

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StackOverFlow community discussions

Questions
Discussion

Jest + Playwright - Test callbacks of event-based DOM library

firefox browser does not start in playwright

Is it possible to get the selector from a locator object in playwright?

How to run a list of test suites in a single file concurrently in jest?

Running Playwright in Azure Function

firefox browser does not start in playwright

This question is quite close to a "need more focus" question. But let's try to give it some focus:

Does Playwright has access to the cPicker object on the page? Does it has access to the window object?

Yes, you can access both cPicker and the window object inside an evaluate call.

Should I trigger the events from the HTML file itself, and in the callbacks, print in the DOM the result, in some dummy-element, and then infer from that dummy element text that the callbacks fired?

Exactly, or you can assign values to a javascript variable:

const cPicker = new ColorPicker({
  onClickOutside(e){
  },
  onInput(color){
    window['color'] = color;
  },
  onChange(color){
    window['result'] = color;
  }
})

And then

it('Should call all callbacks with correct arguments', async() => {
    await page.goto(`http://localhost:5000/tests/visual/basic.html`, {waitUntil:'load'})

    // Wait until the next frame
    await page.evaluate(() => new Promise(requestAnimationFrame))

    // Act
   
    // Assert
    const result = await page.evaluate(() => window['color']);
    // Check the value
})
https://stackoverflow.com/questions/65477895/jest-playwright-test-callbacks-of-event-based-dom-library

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