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How to use GroupingToken method in Playwright Internal

Best JavaScript code snippet using playwright-internal

parse-css.js

...599function CommaToken() { return this; }600CommaToken.prototype = Object.create(CSSParserToken.prototype);601CommaToken.prototype.tokenType = "symbol";602CommaToken.prototype.text = ",";603function GroupingToken() { throw "Abstract Base Class"; }604GroupingToken.prototype = Object.create(CSSParserToken.prototype);605function OpenCurlyToken() { this.value = "{"; this.mirror = "}"; return this; }606OpenCurlyToken.prototype = Object.create(GroupingToken.prototype);607OpenCurlyToken.prototype.tokenType = "symbol";608OpenCurlyToken.prototype.text = "{";609function CloseCurlyToken() { this.value = "}"; this.mirror = "{"; return this; }610CloseCurlyToken.prototype = Object.create(GroupingToken.prototype);611CloseCurlyToken.prototype.tokenType = "symbol";612CloseCurlyToken.prototype.text = "}";613function OpenSquareToken() { this.value = "["; this.mirror = "]"; return this; }614OpenSquareToken.prototype = Object.create(GroupingToken.prototype);615OpenSquareToken.prototype.tokenType = "symbol";616OpenSquareToken.prototype.text = "[";617function CloseSquareToken() { this.value = "]"; this.mirror = "["; return this; }...

css-syntax.js

Source: css-syntax.js

...571function CommaToken() { return this; }572CommaToken.prototype = new CSSParserToken;573CommaToken.prototype.tokenType = ",";574CommaToken.prototype.value = ";"; // backwards-compat with DELIM token575function GroupingToken() { return this; }576GroupingToken.prototype = new CSSParserToken;577function OpenCurlyToken() { this.value = "{"; this.mirror = "}"; return this; }578OpenCurlyToken.prototype = new GroupingToken;579OpenCurlyToken.prototype.tokenType = "{";580function CloseCurlyToken() { this.value = "}"; this.mirror = "{"; return this; }581CloseCurlyToken.prototype = new GroupingToken;582CloseCurlyToken.prototype.tokenType = "}";583function OpenSquareToken() { this.value = "["; this.mirror = "]"; return this; }584OpenSquareToken.prototype = new GroupingToken;585OpenSquareToken.prototype.tokenType = "[";586function CloseSquareToken() { this.value = "]"; this.mirror = "["; return this; }587CloseSquareToken.prototype = new GroupingToken;588CloseSquareToken.prototype.tokenType = "]";589function OpenParenToken() { this.value = "("; this.mirror = ")"; return this; }...

cssTokenizer.js

Source: cssTokenizer.js

...569SemicolonToken.prototype.tokenType = ";";570function CommaToken() { return this; }571CommaToken.prototype = Object.create(CSSParserToken.prototype);572CommaToken.prototype.tokenType = ",";573function GroupingToken() { throw "Abstract Base Class"; }574GroupingToken.prototype = Object.create(CSSParserToken.prototype);575function OpenCurlyToken() { this.value = "{"; this.mirror = "}"; return this; }576OpenCurlyToken.prototype = Object.create(GroupingToken.prototype);577OpenCurlyToken.prototype.tokenType = "{";578function CloseCurlyToken() { this.value = "}"; this.mirror = "{"; return this; }579CloseCurlyToken.prototype = Object.create(GroupingToken.prototype);580CloseCurlyToken.prototype.tokenType = "}";581function OpenSquareToken() { this.value = "["; this.mirror = "]"; return this; }582OpenSquareToken.prototype = Object.create(GroupingToken.prototype);583OpenSquareToken.prototype.tokenType = "[";584function CloseSquareToken() { this.value = "]"; this.mirror = "["; return this; }585CloseSquareToken.prototype = Object.create(GroupingToken.prototype);586CloseSquareToken.prototype.tokenType = "]";587function OpenParenToken() { this.value = "("; this.mirror = ")"; return this; }...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.screenshot({ path: `example.png` });7  await browser.close();8})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3    const browser = await chromium.launch();4    const context = await browser.newContext();5    const page = await context.newPage();6    await page.fill('#lst-ib', 'playwright');7    await page.keyboard.press('Enter');8    await page.waitForSelector('#resultStats');9    const content = await page.content();10    console.log(content);11    await browser.close();12})();13const { chromium } = require('playwright');14(async () => {15    const browser = await chromium.launch();16    const context = await browser.newContext();17    const page = await context.newPage();18    await page.fill('#lst-ib', 'playwright');19    await page.keyboard.press('Enter');20    await page.waitForSelector('#resultStats');21    const content = await page.content((content) => {22        const results = document.querySelectorAll('h3.r a');23        let resultString = '';24        for (let i = 0; i < results.length; i++) {25            resultString += results[i].textContent;26        }27        return resultString;28    });29    console.log(content);30    await browser.close();31})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  await page.screenshot({ path: `example.png` });6  await browser.close();7})();8const { chromium } = require('playwright');9(async () => {10  const browser = await chromium.launch();11  const page = await browser.newPage();12  await page.screenshot({ path: `example.png` });13  await browser.close();14})();15const { chromium } = require('playwright');16(async () => {17  const browser = await chromium.launch();18  const page = await browser.newPage();19  await page.screenshot({ path: `example.png` });20  await browser.close();21})();22const { chromium } = require('playwright');23(async () => {24  const browser = await chromium.launch();25  const page = await browser.newPage();26  await page.screenshot({ path: `example.png` });27  await browser.close();28})();29const { chromium } = require('playwright');30(async () => {31  const browser = await chromium.launch();32  const page = await browser.newPage();33  await page.screenshot({ path: `example.png` });34  await browser.close();35})();36const { chromium } = require('playwright');37(async () => {38  const browser = await chromium.launch();39  const page = await browser.newPage();40  await page.screenshot({ path: `example.png` });41  await browser.close();42})();

Using AI Code Generation

1const { GroupingToken } = require('@playwright/test');2const { test } = GroupingToken;3test.use({ /* test options */ });4const { test } = require('@playwright/test');5test.use({ /* test options */ });6The following example uses the test.use() method of the Playwright Test API to set the viewport size to 800x600 pixels:7const { test } = require('@playwright/test');8test.use({ viewport: { width: 800, height: 600 } });9The following example uses the test.use() method of the Playwright Test API to set the viewport size to 800x600 pixels and the locale to en-US :10const { test } = require('@playwright/test');11test.use({12  viewport: { width: 800, height: 600 },13});14The following example uses the test.use() method of the Playwright Test API to set the viewport size to 800x600 pixels and the locale to en-US for all tests in the test suite:15const { test } = require('@playwright/test');16test.use({17  viewport: { width: 800, height: 600 },18});19The following example uses the test.use() method of the Playwright Test API to set the viewport size to 800x600 pixels and the locale to en-US for all tests in the test suite:20const { test } = require('@playwright/test');21test.use({22  viewport: { width: 800, height: 600 },23});24The following example uses the test.use() method of the Playwright Test API to set the viewport size to 800x600 pixels and the locale to en-US for all tests in the test suite:25const { test } = require('@playwright/test');26test.use({27  viewport: { width: 800, height: 600 },28});29The following example uses the test.use() method of the Playwright Test API to set the viewport size to 800x600 pixels and the locale to en-US for all tests in the test suite:30const { test } = require('@playwright/test

Using AI Code Generation

1const { GroupingToken } = require('playwright/lib/internal/har/Tracer');2const groupingToken = new GroupingToken('groupingTokenName');3console.log(groupingToken);4const { Tracer } = require('playwright/lib/internal/har/Tracer');5const tracer = new Tracer();6console.log(tracer);7const { Tracer } = require('playwright/lib/internal/har/Tracer');8const tracer = new Tracer();9const groupingToken = tracer.startGrouping('groupingTokenName');10console.log(groupingToken);11const { Tracer } = require('playwright/lib/internal/har/Tracer');12const tracer = new Tracer();13const groupingToken = tracer.startGrouping('groupingTokenName');14console.log(groupingToken);15tracer.stopGrouping(groupingToken);16const { Tracer } = require('playwright/lib/internal/har/Tracer');17const tracer = new Tracer();18const span = tracer.startSpan('spanName');19console.log(span);20const { Tracer } = require('playwright/lib/internal/har/Tracer');21const tracer = new Tracer();22const span = tracer.startSpan('spanName');23console.log(span);24tracer.stopSpan(span);25const { Tracer } = require('playwright/lib/internal/har/Tracer');26const tracer = new Tracer();27tracer.on('span', (span) => {28  console.log(span);29});30const { Tracer } = require('playwright/lib/internal/har/Tracer');31const tracer = new Tracer();32const callback = (span) => {33  console.log(span);34};35tracer.on('span', callback);36tracer.off('span', callback);37const { Tracer } = require('playwright/lib/internal/har/Tracer');38const tracer = new Tracer();39console.log(tracer.events());

Using AI Code Generation

1const { GroupingToken } = require('playwright-core/lib/server/frames');2const token = new GroupingToken();3console.log(token);4console.log(token._id);5import { GroupingToken } from 'playwright-core/lib/server/frames';6const token = new GroupingToken();7console.log(token);8console.log(token._id);9GroupingToken { _id: 0 }10GroupingToken { _id: 0 }

Using AI Code Generation

1const { GroupingToken } = require("playwright/lib/internal/recorder/actions");2const groupingToken = new GroupingToken();3groupingToken.start();4groupingToken.stop();5const { GroupingToken } = require("playwright/lib/internal/recorder/actions");6const groupingToken = new GroupingToken();7groupingToken.start();8groupingToken.stop();9groupingToken.start();10groupingToken.stop();11groupingToken.start();12groupingToken.stop();13groupingToken.start();14groupingToken.stop();15groupingToken.start();16groupingToken.stop();

Using AI Code Generation

1const { GroupingToken } = require('playwright/lib/internal/inspector');2const token = new GroupingToken('grouping name');3token.end();4const { GroupingToken } = require('playwright/lib/internal/inspector');5const token = new GroupingToken('grouping name');6token.end();7const { GroupingToken } = require('playwright/lib/internal/inspector');8const token = new GroupingToken('grouping name');9token.end();10const { GroupingToken } = require('playwright/lib/internal/inspector');11const token = new GroupingToken('grouping name');12token.end();13const { GroupingToken } = require('playwright/lib/internal/inspector');14const token = new GroupingToken('grouping name');15token.end();16const { GroupingToken } = require('playwright/lib/internal/inspector');17const token = new GroupingToken('grouping name');18token.end();19const { GroupingToken } = require('playwright/lib/internal/inspector');20const token = new GroupingToken('grouping name');21token.end();22const { GroupingToken } = require('playwright/lib/internal/inspector');23const token = new GroupingToken('grouping name');24token.end();25const { GroupingToken } = require('playwright/lib/internal/inspector');26const token = new GroupingToken('grouping name');27token.end();28const { GroupingToken } = require('playwright/lib/internal/inspector');29const token = new GroupingToken('grouping name');30token.end();31const { GroupingToken } = require('playwright/lib/internal/inspector');32const token = new GroupingToken('grouping name');33token.end();

StackOverFlow community discussions

Questions

Discussion

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

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

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

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

Assuming you are not running test with the --runinband flag, the simple answer is yes but it depends ????

There is a pretty comprehensive GitHub issue jest#6957 that explains certain cases of when tests are run concurrently or in parallel. But it seems to depend on a lot of edge cases where jest tries its best to determine the fastest way to run the tests given the circumstances.

To my knowledge there is no way to force jest to run in parallel.

Aside

Have you considered using playwright instead of puppeteer with jest? Playwright has their own internally built testing library called @playwright/test that is used in place of jest with a similar API. This library allows for explicitly defining test groups in a single file to run in parallel (i.e. test.describe.parallel) or serially (i.e. test.describe.serial). Or even to run all tests in parallel via a config option.

// parallel
test.describe.parallel('group', () => {
  test('runs in parallel 1', async ({ page }) => {});
  test('runs in parallel 2', async ({ page }) => {});
});

// serial
test.describe.serial('group', () => {
  test('runs first', async ({ page }) => {});
  test('runs second', async ({ page }) => {});
});

https://stackoverflow.com/questions/73497773/how-to-run-a-list-of-test-suites-in-a-single-file-concurrently-in-jest

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

Well this is one way, but not sure if it will work for all possible locators!.

// Get a selector from a playwright locator
import { Locator } from "@playwright/test";
export function extractSelector(locator: Locator) {
    const selector = locator.toString();
    const parts = selector.split("@");
    if (parts.length !== 2) { throw Error("extractSelector: susupect that this is not a locator"); }
    if (parts[0] !== "Locator") { throw Error("extractSelector: did not find locator"); }
    return parts[1];
}

https://stackoverflow.com/questions/72044959/is-it-possible-to-get-the-selector-from-a-locator-object-in-playwright

I found the error. It was because of some missing libraries need. I discovered this when I downgraded playwright to version 1.9 and ran the the code then this was the error msg:

(node:12876) UnhandledPromiseRejectionWarning: browserType.launch: Host system is missing dependencies!

Some of the Universal C Runtime files cannot be found on the system. You can fix
that by installing Microsoft Visual C++ Redistributable for Visual Studio from:
https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads

Full list of missing libraries:
    vcruntime140.dll
    msvcp140.dll
Error
    at Object.captureStackTrace (D:\Projects\snkrs-play\node_modules\playwright\lib\utils\stackTrace.js:48:19)
    at Connection.sendMessageToServer (D:\Projects\snkrs-play\node_modules\playwright\lib\client\connection.js:69:48)
    at Proxy.<anonymous> (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:64:61)
    at D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:64:67
    at BrowserType._wrapApiCall (D:\Projects\snkrs-play\node_modules\playwright\lib\client\channelOwner.js:77:34)
    at BrowserType.launch (D:\Projects\snkrs-play\node_modules\playwright\lib\client\browserType.js:55:21)
    at D:\Projects\snkrs-play\index.js:4:35
    at Object.<anonymous> (D:\Projects\snkrs-play\index.js:7:3)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12876) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12876) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

A list of missing libraries was provided. After successful installments, firefox ran fine. I upgraded again to version 1.10 and firefox still works.

https://stackoverflow.com/questions/66984974/firefox-browser-does-not-start-in-playwright

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LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

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