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How to use activateChildComponent method in Playwright Internal

Best JavaScript code snippet using playwright-internal

create-component.js

...32      // å·²ç»æè½½çkeep-aliveç»ä»¶å¯è½ä¼åºé  è¿éåä¸ä¸ªå¤ç33      if (context._isMounted) {34        queueActivatedComponent(componentInstance)35      } else {36        activateChildComponent(componentInstance, true)37      }38    }39  },40  prepatch(oldVnode, vnode){41    // ååºç»ä»¶éç½®42    const options = vnode.componentOptions43    // ååºèèç¹å®ä¾44    const child = vnode.componentInstance = oldVnode.componentInstance45    updateChildComponent(child, options.propsData, options.listeners, vnode, options.children)46  },47  destroy () {48    const { componentInstance } = vnode49    if (!componentInstance._isDestroyed) {50      // æ®éç»ä»¶ç´æ¥è°ç¨destory51      if (!vnode.data.keepAlive) {52        componentInstance.$destroy()53      } else { // keep-alive è°ç¨deactivateChildComponent54        deactivateChildComponent(componentInstance, true /* direct */)55      }56    }57  }58  59}60const hooksToMerge = Object.keys(componentVNodeHooks)61export function createComponent(Ctor, data, context, children, tag) {62  // å¦ææ²¡ææé å½æ° å³ä¸æ¯ä¸ä¸ªç»ä»¶63  if (isUndef(Ctor)) {64    return 65  }66  //ååºVueå®ä¾67  const baseCtor = context.$options._base68  //å¦æä¼ å¥çæ¯å¯¹è±¡,åè½¬æ¢æä¸ä¸ªç»ä»¶çæé å¨...

scheduler.js

Source: scheduler.js

...42function callActivatedHooks (queue) {43  // å¾ªç¯éåè°ç¨activateChildComponentå½æ°44  for (let i = 0; i < queue.length; i++) {45    queue[i]._inactive = true46    activateChildComponent(queue[i], true)47  }48}49function callUpdatedHooks (queue) {50  let i = queue.length51  while (i--) {52    const watcher = queue[i]53    const vm = watcher.vm54    // å·²ç»æè½½ ä¸æ²¡æéæ¯ é¾æ¥æ éè¯¯ è°ç¨updatedé©å55    if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {56      callHook(vm, 'updated')57    }58  }59}60export function queueActivatedComponent (vm) {61  vm._inactive = false62  // å°ç»ä»¶æå¥éå63  activatedChildren.push(vm)64}65function isInInactiveTree (vm) {66  while (vm && (vm = vm.$parent)) {67    if (vm._inactive) return true68  }69  return false70}71export function activateChildComponent (vm, direct) {72  if (direct) {73    vm._directInactive = false74    if (isInInactiveTree(vm)) {75      return76    }77  } else if (vm._directInactive) {78    return79  }80  if (vm._inactive || vm._inactive === null) {81    vm._inactive = false82    for (let i = 0; i < vm.$children.length; i++) {83      activateChildComponent(vm.$children[i])84    }85    callHook(vm, 'activated')86  }87}88export function queueWatcher(watcher) { //å¯¹éå¤çwatcherè¿è¡è¿æ»¤æä½89  let id = watcher.id90  if (has[id] == null) {91    has[id] = true92    if (!flushing) {93      queue.push(watcher) // ç¸åwatcheråªä¼åä¸ä¸ªå°queueä¸      94    } else { // å¦æflushSchedulerQueueå·²ç»å¼å§æ§è¡ æ¤æ¶åæwatcherå å¥è¿æ¥95      let i = queue.length - 196      while (i > index && queue[i].id > watcher.id) {97        i--...

call-activated-hook.js

Source: call-activated-hook.js

...10        }11    }12    return false;13}14function deactivateChildComponent(vm, direct) {15    if (direct) {16        vm._directInactive = true;17        if (isInInactiveTree(vm)) {18            return;19        }20    }21    if (!vm._inactive) {22        vm._inactive = true;23        if (vm.children24            && vm.children.length) {25            for (let i = 0; i < vm.children.length; i++) {26                if (vm.children[i].nodeType === NodeType.CMPT) {27                    deactivateChildComponent(vm.children[i]);28                }29            }30        }31        vm._toPhase('deactivated');32    }33}34function activateChildComponent(vm, direct) {35    if (direct) {36        vm._directInactive = false;37        if (isInInactiveTree(vm)) {38            return;39        }40    }41    else if (vm._directInactive) {42        return;43    }44    if (vm._inactive || vm._inactive === undefined) {45        vm._inactive = false;46        if (vm.children47            && vm.children.length) {48            for (let i = 0; i < vm.children.length; i++) {49                if (vm.children[i].nodeType === NodeType.CMPT) {50                    activateChildComponent(vm.children[i]);51                }52            }53        }54        vm._toPhase('activated');55    }56}57function createCallFactory(name) {58    return function call(direct) {59        if (name === 'deactivited') {60            deactivateChildComponent(this, direct);61        }62        else {63            activateChildComponent(this, direct);64        }65    };66}67export const callActivited = createCallFactory('activited');...

active.js

Source: active.js

...18    }19    if (gm._inactive || gm._inactive === null) {20      gm._inactive = false21      for (let i = 0; i < gm.$children.length; i++) {22        activateChildComponent(gm.$children[i])23      }24      callHook(gm, 'activated')25    }26  }27  28export function deactivateChildComponent (gm, direct) {29    if (direct) {30      gm._directInactive = true31      if (isInInactiveTree(gm)) {32        return33      }34    }35    if (!gm._inactive) {36      gm._inactive = true37      for (let i = 0; i < gm.$children.length; i++) {38        deactivateChildComponent(gm.$children[i])39      }40      callHook(gm, 'deactivated')41    }42  }43  44export function callHook (gm, hook) {45    // #7573 disable dep collection when invoking lifecycle hooks46    pushTarget()47    const handlers = gm.$options[hook]48    const info = `${hook} hook`49    if (handlers) {50      for (let i = 0, j = handlers.length; i < j; i++) {51        invokeWithErrorHandling(handlers[i], gm, null, gm, info)52      }...

lifecycle.js

Source: lifecycle.js

...16  }17  if (vm._inactive || vm._inactive === null) {18    vm._inactive = false19    for (let i = 0; i < vm.$children.length; i++) {20      activateChildComponent(vm.$children[i])21    }22    callHook(vm, 'activated')23  }24}25export function deactivateChildComponent (vm, direct) {26  if (direct) {27    vm._directInactive = true28    if (isInInactiveTree(vm)) {29      return30    }31  }32  if (!vm._inactive) {33    vm._inactive = true34    for (let i = 0; i < vm.$children.length; i++) {35      deactivateChildComponent(vm.$children[i])36    }37    callHook(vm, 'deactivated')38  }39}40export function callHook (vm, hook) {41  const handlers = vm.$options[hook]42  if (handlers) {43    for (let i = 0, j = handlers.length; i < j; i++) {44      try {45        handlers[i].call(vm)46      } catch (e) {47        handleError(e, vm, `${hook} hook`)48      }49    }...

Using AI Code Generation

1import { activateChildComponent } from 'playwright-core/lib/server/chromium/crPage';2import { chromium } from 'playwright-core';3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.waitForSelector('#iframeResult');8  const frame = await page.frame({ name: 'iframeResult' });9  await frame.waitForSelector('input[type="submit"]');10  await activateChildComponent(frame, 'input[type="submit"]', 'click');11  await browser.close();12})();

Using AI Code Generation

1const { activateChildComponent } = require('playwright-core/lib/server/dom.js');2const { chromium } = require('playwright-core');3const { test } = require('@playwright/test');4test('test', async ({ page }) => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page2 = await context.newPage();

StackOverFlow community discussions

Questions

Discussion

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?

firefox browser does not start in playwright

Running Playwright in Azure Function

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

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

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

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

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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