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How to use removeAndInvokeRemoveHook method in Playwright Internal

Best JavaScript code snippet using playwright-internal

patch.js

...75    for (; startIdx <= endIdx; ++startIdx) {76        const ch = vnodes[startIdx]77        if (isDef(ch)) {78          if (isDef(ch.tag)) {79            removeAndInvokeRemoveHook(ch)80            invokeDestroyHook(ch)81          } else { // Text node82            removeNode(ch.elm)83          }84        }85      }86} 87const removeAndInvokeRemoveHook = (vnode, rm) => {88    if (isDef(rm) || isDef(vnode.data)) {89      let i90      const listeners = cbs.remove.length + 191      if (isDef(rm)) {92        // we have a recursively passed down rm callback93        // increase the listeners count94        rm.listeners += listeners95      } else {96        // directly removing97        rm = createRmCb(vnode.elm, listeners)98      }99      // recursively invoke hooks on child component root node100      if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {101        removeAndInvokeRemoveHook(i, rm)102      }103      for (i = 0; i < cbs.remove.length; ++i) {104        cbs.remove[i](vnode, rm)105      }106      if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {107        i(vnode, rm)108      } else {109        rm()110      }111    } else {112      removeNode(vnode.elm)113    }114  }115const patchVnode = (oldVnode, vnode, insertedVnodeQueue, ownerArray, index, removeOnly) => {...

patch-fn.html.a0f5ac45.js

Source: patch-fn.html.a0f5ac45.js

1const data = {2  "key": "v-4b651e1f",3  "path": "/vue/source-study/vdom/patch-fn.html",4  "title": "patch \u8F85\u52A9\u51FD\u6570",5  "lang": "en-US",6  "frontmatter": {},7  "excerpt": "",8  "headers": [9    {10      "level": 2,11      "title": "VNode/DOM \u64CD\u4F5C\u76F8\u5173",12      "slug": "vnode-dom-\u64CD\u4F5C\u76F8\u5173",13      "children": [14        {15          "level": 3,16          "title": "sameVnode",17          "slug": "samevnode",18          "children": []19        },20        {21          "level": 3,22          "title": "removeVnodes\uFF1A\u79FB\u9664\u5B50 VNode \u53CA\u5176 DOM \u5143\u7D20\u8282\u70B9",23          "slug": "removevnodes-\u79FB\u9664\u5B50-vnode-\u53CA\u5176-dom-\u5143\u7D20\u8282\u70B9",24          "children": []25        },26        {27          "level": 3,28          "title": "removeAndInvokeRemoveHook\uFF1A\u79FB\u9664 VNode \u5BF9\u5E94\u7684 DOM \u5143\u7D20\u8282\u70B9",29          "slug": "removeandinvokeremovehook-\u79FB\u9664-vnode-\u5BF9\u5E94\u7684-dom-\u5143\u7D20\u8282\u70B9",30          "children": []31        },32        {33          "level": 3,34          "title": "removeNode\uFF1A\u79FB\u9664 DOM \u5143\u7D20\u8282\u70B9",35          "slug": "removenode-\u79FB\u9664-dom-\u5143\u7D20\u8282\u70B9",36          "children": []37        }38      ]39    },40    {41      "level": 2,42      "title": "\u94A9\u5B50\u51FD\u6570",43      "slug": "\u94A9\u5B50\u51FD\u6570",44      "children": [45        {46          "level": 3,47          "title": "invokeCreateHooks",48          "slug": "invokecreatehooks",49          "children": []50        },51        {52          "level": 3,53          "title": "invokeDestroyHook\uFF1A\u9500\u6BC1 VNode",54          "slug": "invokedestroyhook-\u9500\u6BC1-vnode",55          "children": []56        }57      ]58    }59  ],60  "filePathRelative": "vue/source-study/vdom/patch-fn.md"61};...

createPatchFunction.flat2.removeAndInvokeRemoveHook.js

Source: createPatchFunction.flat2.removeAndInvokeRemoveHook.js

...15        rm = createRmCb(vnode.elm, listeners)16      }17      // å¯¹ç»ä»¶(vnode.componentInstance._vnode.data)éå½è°ç¨18      if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {19        removeAndInvokeRemoveHook(i, rm)20      }21      // è°ç¨ remove é©å22      for (i = 0; i < cbs.remove.length; ++i) {23        cbs.remove[i](vnode, rm)24      }25      if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {26        // è°ç¨ vnode.data.hook.remove é©å27        i(vnode, rm)28      } else {29        // ææ¯è°ç¨ rm ç§»é¤èç¹30        rm()31      }32    } else {33      // ç®åç§»é¤èç¹...

9814.js

Source: 9814.js

2  for (; startIdx <= endIdx; ++startIdx) {3    var ch = vnodes[startIdx];4    if (isDef(ch)) {5      if (isDef(ch.tag)) {6        removeAndInvokeRemoveHook(ch);7        invokeDestroyHook(ch);8      } else {9        removeNode(ch.elm);10      }11    }12  }...

12434.js

Source: 12434.js

2  for (; startIdx <= endIdx; ++startIdx) {3    var ch = vnodes[startIdx];4    if (isDef(ch)) {5      if (isDef(ch.tag)) {6        removeAndInvokeRemoveHook(ch);7        invokeDestroyHook(ch);8      } else {9        removeNode(ch.elm);10      }11    }12  }...

8758.js

Source: 8758.js

2  for (; startIdx <= endIdx; ++startIdx) {3    var ch = vnodes[startIdx];4    if (isDef(ch)) {5      if (isDef(ch.tag)) {6        removeAndInvokeRemoveHook(ch);7        invokeDestroyHook(ch);8      } else {9        removeNode(ch.elm);10      }11    }12  }...

10247.js

Source: 10247.js

2  for (; startIdx <= endIdx; ++startIdx) {3    var ch = vnodes[startIdx];4    if (isDef(ch)) {5      if (isDef(ch.tag)) {6        removeAndInvokeRemoveHook(ch);7        invokeDestroyHook(ch);8      } else {9        removeNode(ch.elm);10      }11    }12  }...

8187.js

Source: 8187.js

2  for (; startIdx <= endIdx; ++startIdx) {3    var ch = vnodes[startIdx];4    if (isDef(ch)) {5      if (isDef(ch.tag)) {6        removeAndInvokeRemoveHook(ch);7        invokeDestroyHook(ch);8      } else {9        removeNode(ch.elm);10      }11    }12  }...

Using AI Code Generation

1const { removeAndInvokeRemoveHook } = require('playwright/lib/server/browserContext');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await removeAndInvokeRemoveHook(context);8  await browser.close();9})();10const { removeAndInvokeRemoveHook } = require('playwright/lib/server/browserContext');11const { chromium } = require('playwright');12(async () => {13  const browser = await chromium.launch();14  const context = await browser.newContext();15  const page = await context.newPage();16  await removeAndInvokeRemoveHook(context);17  await browser.close();18})();

Using AI Code Generation

1const { removeAndInvokeRemoveHook } = require('playwright/lib/server/supplements/recorder/recorderSupplement');2const { RecorderSupplement } = require('playwright/lib/server/supplements/recorder/recorderSupplement');3const { Playwright } = require('playwright');4const { chromium } = Playwright;5const { RecorderController } = require('playwright/lib/server/supplements/recorder/recorderSupplement');6const { Page } = require('playwright/lib/server/page');7const { Frame } = require('playwright/lib/server/frame');8const { ElementHandle } = require('playwright/lib/server/dom');9const browser = await chromium.launch();10const context = await browser.newContext();11const page = await context.newPage();12const controller = new RecorderController();13const recorderSupplement = new RecorderSupplement(page, controller);14await recorderSupplement.install();15await page.click('text=English');16await page.click('text=Deutsch');17await page.click('text=English');18await page.click('text=Deutsch');19await page.click('text=English');20await page.click('text=Deutsch');21await page.click('text=English');22await page.click('text=Deutsch');23await page.click('text=English');24await page.click('text=Deutsch');25await page.click('text=English');26await page.click('text=Deutsch');27await page.click('text=English');28await page.click('text=Deutsch');29await page.click('text=English');30await page.click('text=Deutsch');31await page.click('text=English');32await page.click('text=Deutsch');33await page.click('text=English');34await page.click('text=Deutsch');35await page.click('text=English');36await page.click('text=Deutsch');37await page.click('text=English');38await page.click('text=Deutsch');39await page.click('text=English');40await page.click('text=Deutsch');41await page.click('text=English');42await page.click('text=Deutsch');43await page.click('text=English');44await page.click('text=Deutsch');45await page.click('text=English');46await page.click('text=Deutsch');47await page.click('text=English');48await page.click('text=Deutsch');49await page.click('text=English');50await page.click('text=Deutsch');

Using AI Code Generation

1const { removeAndInvokeRemoveHook } = require('playwright/lib/utils/utils');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  removeAndInvokeRemoveHook(browser);6  await browser.close();7})()

Using AI Code Generation

1const { removeAndInvokeRemoveHook } = require('playwright/lib/server/supplements/har/harTracer');2const { createHarTracer } = require('playwright/lib/server/supplements/har/harTracer');3const { Context } = require('playwright/lib/server/chromium/crBrowser');4const { Page } = require('playwright/lib/server/chromium/crPage');5const context = new Context();6const page = new Page(context, null, null, null, null);7const harTracer = createHarTracer(page);8console.log('Before removing a request', harTracer.harLog.pages[0].entries.length);9removeAndInvokeRemoveHook(harTracer, 3);10console.log('After removing a request', harTracer.harLog.pages[0].entries.length);11const { removeAndInvokeRemoveHook } = require('playwright/lib/server/supplements/har/harTracer');12const { createHarTracer } = require('playwright/lib/server/supplements/har/harTracer');13const { Context } = require('playwright/lib/server/chromium/crBrowser');14const { Page } = require('playwright/lib/server/chromium/crPage');15const context = new Context();16const page = new Page(context, null, null, null, null);17const harTracer = createHarTracer(page);

Using AI Code Generation

1const { removeAndInvokeRemoveHook } = require('playwright/lib/server/browserContext.js')2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  removeAndInvokeRemoveHook(context._browserContext);7  await browser.close();8})();

Using AI Code Generation

1const playwright = require('playwright');2const { removeAndInvokeRemoveHook } = playwright._impl;3removeAndInvokeRemoveHook();4const { test, expect } = require('@playwright/test');5test('test', async ({ page }) => {6  const title = page.locator('text=Playwright');7  await expect(title).toBeVisible();8});9const { test, expect } = require('@playwright/test');10test('test', async ({ page }) => {11  const title = page.locator('text=Playwright');12  await expect(title).toBeVisible();13});14const { test, expect } = require('@playwright/test');15test('test', async ({ page }) => {16  const title = page.locator('text=Playwright');17  await expect(title).toBeVisible();18});19const { test, expect } = require('@playwright/test');20test('test', async ({ page }) => {21  const title = page.locator('text=Playwright');22  await expect(title).toBeVisible();23});24const { test, expect } = require('@playwright/test');25test('test', async ({ page }) => {26  const title = page.locator('text=Playwright');27  await expect(title).toBeVisible();28});29const { test, expect } = require('@playwright/test');30test('test', async ({ page }) => {31  const title = page.locator('text=Playwright');32  await expect(title).toBeVisible();33});34const { test, expect } = require('@playwright/test');35test('test', async ({ page }) => {36  const title = page.locator('text=Playwright');37  await expect(title).toBeVisible();38});39const { test, expect } = require('@playwright/test');40test('test', async ({ page }) =>

Using AI Code Generation

1const { removeAndInvokeRemoveHook } = require('playwright/lib/server/instrumentation');2removeAndInvokeRemoveHook();3const { removeHook } = require('playwright/lib/server/instrumentation');4removeHook();5const { removeHook } = require('playwright/lib/server/instrumentation');6removeHook();7function removeHook() {8  if (hooked) {9    hooked = false;10    removeListener('uncaughtException', onUncaughtException);11  }12}

Using AI Code Generation

1const { TestServer } = require('./utils/testserver/');2const { removeAndInvokeRemoveHook } = require('./utils/testserver/PlaywrightInternalAPI');3const path = require('path');4const {chromium} = require('playwright');5const { expect } = require('chai');6const { describe, it, beforeAll, afterAll, afterEach } = require('mocha');7describe('Test', () => {8    let server;9    let browser;10    let page;11    beforeAll(async () => {12        server = await TestServer.create(0);13        server.enableHTTPCache = false;14        browser = await chromium.launch();15        page = await browser.newPage();16    });17    afterAll(async () => {18        server.destroy();19        await browser.close();20    });21    afterEach(async () => {22        await removeAndInvokeRemoveHook(page);23    });24    it('should load', async () => {25        await page.goto(server.EMPTY_PAGE);26        await page.setContent(`<script src="${server.PREFIX}/injectedfile.js"></script>`);27        await page.waitForTimeout(1000);28        expect(await page.evaluate(() => window['injected'])).to.equal('injected');29    });30});31const path = require('path');32const { chromium } = require('playwright');33const { expect } = require('chai');34const { describe, it, beforeAll, afterAll, afterEach } = require('mocha');35const { TestServer } = require('./utils/testserver/');36describe('Playwright Internal API', () => {37    let server;38    let browser;39    let page;40    beforeAll(async () => {41        server = await TestServer.create(0);42        server.enableHTTPCache = false;43        browser = await chromium.launch();44        page = await browser.newPage();45    });46    afterAll(async () => {47        server.destroy();48        await browser.close();49    });50    afterEach(async () => {51        await removeAndInvokeRemoveHook(page);52    });53    it('should load', async () => {54        await page.goto(server.EMPTY_PAGE);55        await page.setContent(`<script src="${server.PREFIX}/injectedfile.js"></script>`);56        await page.waitForTimeout(1000);57        expect(await page.evaluate(() => window['injected'])).to.equal('injected');58    });59});

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

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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.