KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use extractPropsFromVNodeData method in Playwright Internal

Best JavaScript code snippet using playwright-internal

createElement.js

...49  // è·åå°åç»ä»¶çpropsçå¼50  console.log(Ctor.options.props)51  console.log(data, 'xxxxxxx')52  // åå»ºèæèç¹çæ¶å  å°±éè¦è·åå½åçå¼äº53  const propsData = extractPropsFromVNodeData(data, Ctor)54  console.log(propsData, 'propsData')55  // -${Ctor.cid} è¿ä¸ªæ ä»·çä¸çä¸56  // propsData ä¼ä½ä¸ºcomponentOptionsçä¸ä¸ªåæ°ä¼ éè¿å»57  return vnode(`vue-coponent-${Ctor.cid}-${tag}`, data, key, undefined, undefined, { Ctor, children, propsData })58}59export function createTextNode(vm, text) {60  // console.log(text, 'text')61  // ææ¬çèæèç¹62  return vnode(undefined, undefined, undefined, undefined, text)63}64// èæèç¹  å°±æ¯éè¿ _c _v å®ç°ç¨å¯¹è±¡æ¥æè¿°domçæä½65// componentOptions propsä¼ä½ä¸ºè¿ä¸ªçä¸ä¸ªåæ°ä¼ å¥ è¿è¡åå»ºvnode66function vnode(tag, data, key, children, text, componentOptions) {67  return {...

vnode.js

Source: vnode.js

...78      context: this,79      componentOptions: {80        Ctor,81        data,82        propsData: extractPropsFromVNodeData(data, Ctor),83        children,84      },85    });86  }8788  static createVNode(tag, data, children) {89    let vnode;90    // å¤æå¤ç91    if (!children) {92      children = data;93    }94    children = normalizeChildren(children);95    if (typeof tag === "string") {96      // åå»ºæ®évnode
...

create-component.js

Source: create-component.js

...26  // if (isDef(data.model)) {27  //   transformModel(Ctor.options, data)28  // }29  // extract props30  const propsData = extractPropsFromVNodeData(data, Ctor, tag)31  // // functional component32  // if (isTrue(Ctor.options.functional)) {33  //   return createFunctionalComponent(Ctor, propsData, data, context, children)34  // }35  // extract listeners, since these needs to be treated as36  // child component listeners instead of DOM listeners37  const listeners = data.on38  // replace with listeners with .native modifier39  data.on = data.nativeOn40  // if (isTrue(Ctor.options.abstract)) {41  //   // abstract components do not keep anything42  //   // other than props & listeners43  //   data = {}44  // }...

props.html.89fb2e08.js

Source: props.html.89fb2e08.js

1const data = {2  "key": "v-53e26c6a",3  "path": "/vue/source-study/instance/state/props.html",4  "title": "props",5  "lang": "en-US",6  "frontmatter": {},7  "excerpt": "",8  "headers": [9    {10      "level": 2,11      "title": "\u63D0\u53D6 propsData",12      "slug": "\u63D0\u53D6-propsdata",13      "children": [14        {15          "level": 3,16          "title": "extractPropsFromVNodeData",17          "slug": "extractpropsfromvnodedata",18          "children": []19        }20      ]21    },22    {23      "level": 2,24      "title": "initProps",25      "slug": "initprops",26      "children": [27        {28          "level": 3,29          "title": "prop \u6302\u8F7D\u5230 vm \u4E0A\u4FBF\u6377\u8BBF\u95EE",30          "slug": "prop-\u6302\u8F7D\u5230-vm-\u4E0A\u4FBF\u6377\u8BBF\u95EE",31          "children": []32        }33      ]34    },35    {36      "level": 2,37      "title": "prop \u7684\u6821\u9A8C\u4E0E\u6C42\u503C",38      "slug": "prop-\u7684\u6821\u9A8C\u4E0E\u6C42\u503C",39      "children": [40        {41          "level": 3,42          "title": "Boolean \u7C7B\u578B\u7279\u6B8A\u5904\u7406",43          "slug": "boolean-\u7C7B\u578B\u7279\u6B8A\u5904\u7406",44          "children": []45        },46        {47          "level": 3,48          "title": "\u83B7\u53D6\u9ED8\u8BA4\u503C && \u521B\u5EFA\u89C2\u5BDF\u8005\u5BF9\u8C61",49          "slug": "\u83B7\u53D6\u9ED8\u8BA4\u503C-\u521B\u5EFA\u89C2\u5BDF\u8005\u5BF9\u8C61",50          "children": []51        },52        {53          "level": 3,54          "title": "\u9A8C\u8BC1",55          "slug": "\u9A8C\u8BC1",56          "children": []57        }58      ]59    },60    {61      "level": 2,62      "title": "\u91CA\u7591",63      "slug": "\u91CA\u7591",64      "children": [65        {66          "level": 3,67          "title": "initProps \u51FD\u6570\u91CC\u7684 defineReactive(props, key, value) \u548C validateProp \u51FD\u6570\u91CC observe(value) \u6709\u4EC0\u4E48\u533A\u522B\uFF1F",68          "slug": "initprops-\u51FD\u6570\u91CC\u7684-definereactive-props-key-value-\u548C-validateprop-\u51FD\u6570\u91CC-observe-value-\u6709\u4EC0\u4E48\u533A\u522B",69          "children": []70        }71      ]72    }73  ],74  "filePathRelative": "vue/source-study/instance/state/props.md"75};...

vm.js

Source: vm.js

1import { isDef, isUndef } from "./index";2/**3 * å°propsé»è®¤æ°æ®ä»ç»ä»¶é»è®¤éç½®ä¸ æååºæ¥4 * å¹¶åå¹¶ä¼ å¥çpropså¼5 * @param data ä¼ å¥ç»vnodeçéç½®6 * @param ctor ç»ä»¶é»è®¤éç½®7 * @param tag8 */9export const extractPropsFromVNodeData = function(data, ctor) {10  const propOptions = ctor.options.props;11  if (isUndef(propOptions)) {12    return;13  }14  const result = {};15  const { props } = data;16  if (isDef(attrs)) {17    for (key of propOptions) {18      if (props[key]) {19        result[key] = props[key];20      }21    }22  }23  return result;
...

extract-props.js

Source: extract-props.js

1export function extractPropsFromVNodeData(2 data,3 Ctor,4 tag5) {...

Using AI Code Generation

1const { extractPropsFromVNodeData } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const { createVNode } = require('playwright/lib/server/supplements/recorder/vNode.js');3const vNode = createVNode('div', { id: 'test', 'data-testid': 'test' });4const props = extractPropsFromVNodeData(vNode);5console.log(props);6const { extractPropsFromVNodeData } = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');7const { createVNode } = require('playwright/lib/server/supplements/recorder/vNode.js');8const vNode = createVNode('div', { id: 'test', 'data-testid': 'test' });9const props = extractPropsFromVNodeData(vNode);10console.log(props);

Using AI Code Generation

1const { extractPropsFromVNodeData } = require('playwright-core/lib/server/supplements/utils/vnode');2const { parse: parseHTML } = require('playwright-core/lib/server/supplements/utils/htmlparser2');3const { parse: parseCSS } = require('playwright-core/lib/server/supplements/utils/cssparser');4const html = `<div style="background: #000000; color: #ffffff; font-size: 10px; font-family: 'Times New Roman'">Hello World!</div>`;5const css = `div { background: #000000; color: #ffffff; font-size: 10px; font-family: 'Times New Roman' }`;6const dom = parseHTML(html);7const style = parseCSS(css);8const props = extractPropsFromVNodeData(dom[0].data, style);

Using AI Code Generation

1const { extractPropsFromVNodeData } = require('playwright-core/lib/server/dom.js');2const { parse } = require('playwright-core/lib/server/common/html.js');3const html = '<div data-testid="test1" data-test2="test2" class="testClass"></div>';4const doc = parse(html);5const props = extractPropsFromVNodeData(doc.firstChild);6console.log(props);

Using AI Code Generation

1const { extractPropsFromVNodeData } = require('playwright/lib/server/dom');2const props = extractPropsFromVNodeData({ props: { 'data-testid': 'test' } });3console.log(props);4const { extractPropsFromVNodeData } = require('playwright/lib/server/dom');5const props = extractPropsFromVNodeData({ props: { 'data-testid': 'test', 'data-test': 'test' } });6console.log(props);7const { extractPropsFromVNodeData } = require('playwright/lib/server/dom');8const props = extractPropsFromVNodeData({ props: { 'data-testid': 'test', 'data-test': 'test', 'data-test-id': 'test' } });9console.log(props);10const { extractPropsFromVNodeData } = require('playwright/lib/server/dom');11const props = extractPropsFromVNodeData({ props: { 'data-testid': 'test', 'data-test': 'test', 'data-test-id': 'test', 'data-test-id-1': 'test' } });12console.log(props);13const { extractPropsFromVNodeData } = require('playwright/lib/server/dom');14const props = extractPropsFromVNodeData({ props: { 'data-testid': 'test', 'data-test': 'test', 'data-test-id': 'test', 'data-test-id-1': 'test', 'data-test-id-2': 'test' } });15console.log(props);

Using AI Code Generation

1const { extractPropsFromVNodeData } = require('../../lib/server/playwright');2const { parse } = require('path-to-regexp');3const pathToRegexp = require('path-to-regexp');4const path = '/user/:id';5const keys = [];6const regexp = pathToRegexp(path, keys);7const match = regexp.exec('/user/123');8const params = Object.fromEntries(keys.map((key, i) => [key.name, match[i + 1]]));9console.log(extractPropsFromVNodeData(params));10console.log(params);11{ id: '123' }12{ id: '123' }

Using AI Code Generation

1const { extractPropsFromVNodeData } = require ( 'playwright/lib/server/common/impl' );2const data = {3  attrs: {4  }5};6const props = extractPropsFromVNodeData ( data );7console .log ( props ) ;8const { extractPropsFromVNodeData } = require ( 'playwright/lib/server/common/impl' );9const data = {10  attrs: {11  }12};13const props = extractPropsFromVNodeData ( data );14console .log ( props ) ;15const { extractPropsFromVNodeData } = require ( 'playwright/lib/server/common/impl' );16const data = {17  attrs: {18  }19};20const props = extractPropsFromVNodeData ( data );21console .log ( props ) ;22const { extractPropsFromVNodeData } = require ( 'playwright/lib/server/common/impl' );23const data = {24  attrs: {25  }26};27const props = extractPropsFromVNodeData ( data );28console .log ( props ) ;29const { extractPropsFromVNodeData } =

StackOverFlow community discussions

Questions

Discussion

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

firefox browser does not start in playwright

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

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

Running Playwright in Azure Function

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

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

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

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

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

Blogs

Check out the latest blogs from LambdaTest on this topic:

Desired Capabilities in Selenium Webdriver

Desired Capabilities is a class used to declare a set of basic requirements such as combinations of browsers, operating systems, browser versions, etc. to perform automated cross browser testing of a web application.

Rebuild Confidence in Your Test Automation

These days, development teams depend heavily on feedback from automated tests to evaluate the quality of the system they are working on.

How To Identify Locators In Appium [With Examples]

Nowadays, automation is becoming integral to the overall quality of the products being developed. Especially for mobile applications, it’s even more important to implement automation robustly.

Test Optimization for Continuous Integration

“Test frequently and early.” If you’ve been following my testing agenda, you’re probably sick of hearing me repeat that. However, it is making sense that if your tests detect an issue soon after it occurs, it will be easier to resolve. This is one of the guiding concepts that makes continuous integration such an effective method. I’ve encountered several teams who have a lot of automated tests but don’t use them as part of a continuous integration approach. There are frequently various reasons why the team believes these tests cannot be used with continuous integration. Perhaps the tests take too long to run, or they are not dependable enough to provide correct results on their own, necessitating human interpretation.

Six Agile Team Behaviors to Consider

Are members of agile teams different from members of other teams? Both yes and no. Yes, because some of the behaviors we observe in agile teams are more distinct than in non-agile teams. And no, because we are talking about individuals!

Playwright tutorial

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.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.