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How to use enqueueCapturedUpdate method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberThrow.old.js

...339        workInProgress.flags |= ShouldCapture;340        const lane = pickArbitraryLane(rootRenderLanes);341        workInProgress.lanes = mergeLanes(workInProgress.lanes, lane);342        const update = createRootErrorUpdate(workInProgress, errorInfo, lane);343        enqueueCapturedUpdate(workInProgress, update);344        return;345      }346      case ClassComponent:347        // Capture and retry348        const errorInfo = value;349        const ctor = workInProgress.type;350        const instance = workInProgress.stateNode;351        if (352          (workInProgress.flags & DidCapture) === NoFlags &&353          (typeof ctor.getDerivedStateFromError === 'function' ||354            (instance !== null &&355              typeof instance.componentDidCatch === 'function' &&356              !isAlreadyFailedLegacyErrorBoundary(instance)))357        ) {358          workInProgress.flags |= ShouldCapture;359          const lane = pickArbitraryLane(rootRenderLanes);360          workInProgress.lanes = mergeLanes(workInProgress.lanes, lane);361          // Schedule the error boundary to re-render using updated state362          const update = createClassErrorUpdate(363            workInProgress,364            errorInfo,365            lane,366          );367          enqueueCapturedUpdate(workInProgress, update);368          return;369        }370        break;371      default:372        break;373    }374    workInProgress = workInProgress.return;375  } while (workInProgress !== null);376}...

ReactFiberThrow.new.js

Source: ReactFiberThrow.new.js

...337        workInProgress.flags |= ShouldCapture;338        const lane = pickArbitraryLane(rootRenderLanes);339        workInProgress.lanes = mergeLanes(workInProgress.lanes, lane);340        const update = createRootErrorUpdate(workInProgress, errorInfo, lane);341        enqueueCapturedUpdate(workInProgress, update);342        return;343      }344      case ClassComponent:345        // Capture and retry346        const errorInfo = value;347        const ctor = workInProgress.type;348        const instance = workInProgress.stateNode;349        if (350          (workInProgress.flags & DidCapture) === NoFlags &&351          (typeof ctor.getDerivedStateFromError === 'function' ||352            (instance !== null &&353              typeof instance.componentDidCatch === 'function' &&354              !isAlreadyFailedLegacyErrorBoundary(instance)))355        ) {356          workInProgress.flags |= ShouldCapture;357          const lane = pickArbitraryLane(rootRenderLanes);358          workInProgress.lanes = mergeLanes(workInProgress.lanes, lane);359          // Schedule the error boundary to re-render using updated state360          const update = createClassErrorUpdate(361            workInProgress,362            errorInfo,363            lane,364          );365          enqueueCapturedUpdate(workInProgress, update);366          return;367        }368        break;369      default:370        break;371    }372    workInProgress = workInProgress.return;373  } while (workInProgress !== null);374}...

ReactFiberThrow.js

Source:ReactFiberThrow.js

...317          workInProgress,318          errorInfo,319          renderExpirationTime,320        );321        enqueueCapturedUpdate(workInProgress, update);322        return;323      }324      case ClassComponent:325        // Capture and retry326        const errorInfo = value;327        const ctor = workInProgress.type;328        const instance = workInProgress.stateNode;329        if (330          (workInProgress.effectTag & DidCapture) === NoEffect &&331          (typeof ctor.getDerivedStateFromError === 'function' ||332            (instance !== null &&333              typeof instance.componentDidCatch === 'function' &&334              !isAlreadyFailedLegacyErrorBoundary(instance)))335        ) {336          workInProgress.effectTag |= ShouldCapture;337          workInProgress.expirationTime = renderExpirationTime;338          // Schedule the error boundary to re-render using updated state339          const update = createClassErrorUpdate(340            workInProgress,341            errorInfo,342            renderExpirationTime,343          );344          enqueueCapturedUpdate(workInProgress, update);345          return;346        }347        break;348      default:349        break;350    }351    workInProgress = workInProgress.return;352  } while (workInProgress !== null);353}...

ReactFiberUnwindWork.js

Source: ReactFiberUnwindWork.js

...264          workInProgress,265          errorInfo,266          renderExpirationTime,267        );268        enqueueCapturedUpdate(workInProgress, update, renderExpirationTime);269        return;270      }271      case ClassComponent:272        // Capture and retry273        const errorInfo = value;274        const ctor = workInProgress.type;275        const instance = workInProgress.stateNode;276        if (277          (workInProgress.effectTag & DidCapture) === NoEffect &&278          ((typeof ctor.getDerivedStateFromCatch === 'function' &&279            enableGetDerivedStateFromCatch) ||280            (instance !== null &&281              typeof instance.componentDidCatch === 'function' &&282              !isAlreadyFailedLegacyErrorBoundary(instance)))283        ) {284          workInProgress.effectTag |= ShouldCapture;285          // Schedule the error boundary to re-render using updated state286          const update = createClassErrorUpdate(287            workInProgress,288            errorInfo,289            renderExpirationTime,290          );291          enqueueCapturedUpdate(workInProgress, update, renderExpirationTime);292          return;293        }294        break;295      default:296        break;297    }298    workInProgress = workInProgress.return;299  } while (workInProgress !== null);300}301function unwindWork(302  workInProgress: Fiber,303  renderExpirationTime: ExpirationTime,304) {305  if (enableProfilerTimer) {...

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.evaluate(() => {7    const update = {8    };9    window.__REACT_DEVTOOLS_GLOBAL_HOOK__.$0._reactInternalFiber.updateQueue.enqueueCapturedUpdate(update);10  });11  await page.screenshot({ path: 'example.png' });12  await browser.close();13})();14const { chromium } = require('playwright');15(async () => {16  const browser = await chromium.launch();17  const context = await browser.newContext();18  const page = await context.newPage();19  await page.screenshot({ path: 'example.png' });20  await browser.close();21})();

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  const element = await page.$('h1');7  await element.evaluate((element) => {8    element._context._ownerDocument._enqueueCapturedUpdate(element, 'textContent', 'Hello World');9  });10  await browser.close();11})();

Using AI Code Generation

1const { chromium } = require('playwright');2const path = require('path');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  const elementHandle = await page.$('input[name="q"]');8  await page.evaluate(element => element.value = 'Hello World', elementHandle);9  await page.evaluate(() => {10    const event = new InputEvent('input', {data: 'Hello World'});11    document.querySelector('input[name="q"]').dispatchEvent(event);12  });13  await browser.close();14})();15const { chromium } = require('playwright');16const path = require('path');17(async () => {18  const browser = await chromium.launch();19  const context = await browser.newContext();20  const page = await context.newPage();21  const elementHandle = await page.$('input[name="q"]');22  await page.evaluate(element => element.value = 'Hello World', elementHandle);23  await page.evaluate(() => {24    const event = new InputEvent('input', {data: 'Hello World'});25    document.querySelector('input[name="q"]').dispatchEvent(event);26  });27  const snapshot = await page._delegate.captureSnapshot({28    root: page.mainFrame()._delegate,29  });30  console.log(snapshot);31  await browser.close();32})();

Using AI Code Generation

1const path = require('path');2const playwright = require('playwright');3const { enqueueCapturedUpdate } = require('playwright/lib/server/supplements/recorder/recorderSupplement');4(async () => {5  const browser = await playwright.chromium.launch({ headless: false });6  const context = await browser.newContext();7  const page = await context.newPage();8  await page.evaluate(() => {9    window.addEventListener('input', event => {10      enqueueCapturedUpdate(event);11    });12    window.addEventListener('click', event => {13      enqueueCapturedUpdate(event);14    });15  });16  await page.click('input[type="text"]');17  await page.type('input[type="text"]', 'Playwright');18  await page.click('text=Playwright');19  await browser.close();20})();21{22    {23    },24    {25    },26    {27    }28}29const fs = require('fs');30const path = require('path');31const playwright = require('playwright');32const { enqueueCapturedUpdate } = require('playwright/lib/server/supplements/recorder/recorderSupplement');33(async () => {34  const browser = await playwright.chromium.launch({ headless: false });35  const context = await browser.newContext();36  const page = await context.newPage();37  await page.evaluate(() => {38    window.addEventListener('input', event => {39      enqueueCapturedUpdate(event);40    });41    window.addEventListener('click', event => {42      enqueueCapturedUpdate(event);43    });44  });45  await page.click('input[type="text"]');46  await page.type('input[type="text"]', 'Playwright');47  await page.click('text=

Using AI Code Generation

1const { contextBridge, ipcRenderer } = require('electron');2contextBridge.exposeInMainWorld('playwright', {3  enqueueCapturedUpdate: (update) => {4    ipcRenderer.send('enqueue-captured-update', update);5  }6});7const { contextBridge } = require('electron');8const playwright = require('playwright');9const { capture } = require('./capture');10contextBridge.exposeInMainWorld('playwright', {11});12const { playwright } = require('electron').remote;13const { capture } = playwright;14module.exports = { capture };15const { playwright } = require('electron').remote;16const { capture } = playwright;17capture('test.js').then(console.log);18const { app, BrowserWindow, ipcMain } = require('electron');19const path = require('path');20let mainWindow;21function createWindow() {22  mainWindow = new BrowserWindow({23    webPreferences: {24      preload: path.join(__dirname, 'preload.js'),25    }26  });27  mainWindow.loadFile('index.html');28}29app.whenReady().then(createWindow);30ipcMain.on('enqueue-captured-update', (event, update) => {31  console.log(update);32});

Using AI Code Generation

1const { enqueueCapturedUpdate } = require('react-dom/cjs/react-dom.development');2const { act } = require('react-dom/test-utils');3const { mount } = require('enzyme');4const { getTestState } = require('react-dom/cjs/react-dom-test-utils.development');5const Component = () => {6  const [count, setCount] = React.useState(0);7  return (8      <button onClick={() => setCount(count + 1)}>Increment</button>9      <span>{count}</span>10  );11};12describe('Test', () => {13  it('should work', () => {14    const wrapper = mount(<Component />);15    const button = wrapper.find('button');16    button.simulate('click');17    expect(wrapper.find('span').text()).toBe('1');18    const state = getTestState();19    enqueueCapturedUpdate(state, 0, 'setState', () => {20      setCount(2);21    });22    expect(wrapper.find('span').text()).toBe('2');23  });24});25const { act } = require('react-dom/test-utils');26const { mount } = require('enzyme');27const Component = () => {28  const [count, setCount] = React.useState(0);29  return (30      <button onClick={() => setCount(count + 1)}>Increment</button>31      <span>{count}</span>32  );33};34describe('Test', () => {35  it('should work', () => {36    const wrapper = mount(<Component />);37    const button = wrapper.find('button');38    button.simulate('click');39    expect(wrapper.find('span').text()).toBe('1');40    act(() => {41      setCount(2);42    });43    expect(wrapper.find('span').text()).toBe('2');44  });45});46const { act } = require('react-dom/test-utils');47const { mount } = require('enzyme');48const Component = () => {49  const [count, setCount] = React.useState(0);50  return (51      <button onClick={() => setCount(count + 1)}>Increment</button>52      <span>{count}</

Using AI Code Generation

1const {enqueueCapturedUpdate} = require('react-dom/cjs/react-dom.development');2enqueueCapturedUpdate({3});4const {enqueueCapturedUpdate} = require('react-dom/cjs/react-dom.development');5    at enqueueCapturedUpdate (node_modules/react-dom/cjs/react-dom.development.js:20407:32)6const {enqueueSetState} = require('react-dom/cjs/react-dom.development');7enqueueSetState({8});9const {enqueueSetState} = require('react-dom/cjs/react-dom.development');10    at enqueueSetState (node_modules/react-dom/cjs/react-dom.development.js:20471:32)11const {enqueueSetState} = require('react-dom/cjs/react-dom.development');

Using AI Code Generation

1const playwright = require('playwright');2const { enqueueCapturedUpdate } = require('playwright/lib/server/injected/injectedScript');3const { createPageInContext } = require('playwright/lib/server/browserContext');4async function main() {5  const browser = await playwright.chromium.launch({ headless: false });6  const context = await browser.newContext();7  const page = await context.newPage();8  await page.evaluate(() => {9    const { enqueueCapturedUpdate } = window['playwrightInternal'];10    const root = document.getElementById('root');11    const update = {12      payload: {13        children: [document.createElement('div')],14      },15    };16    enqueueCapturedUpdate(update);17  });18}19main();

Using AI Code Generation

1const { chromium } = require('playwright');2const { enqueueCapturedUpdate } = require('react-reconciler/cjs/react-reconciler.development');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  enqueueCapturedUpdate(page, {type: 'keydown', keyCode: 65, key: 'a'});8  await page.keyboard.press('Enter');9  await browser.close();10})();11const { enqueueCapturedUpdate } = require('react-reconciler/cjs/react-reconciler.development');12const { method } = require('playwright-core/lib/server/chromium/crBrowser');13const { method } = require('playwright-core/lib/server/chromium/crBrowser').BrowserContext;14const { method } = require('playwright-core/lib/server/chromium/crBrowser').Page;

StackOverFlow community discussions

Questions

Discussion

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

Running Playwright in Azure Function

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

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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