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How to use popProvider method in Playwright Internal

Best JavaScript code snippet using playwright-internal

ReactFiberUnwindWork.old.js

...114    case HostPortal:115      popHostContainer(workInProgress);116      return null;117    case ContextProvider:118      popProvider(workInProgress);119      return null;120    case OffscreenComponent:121    case LegacyHiddenComponent:122      popRenderLanes(workInProgress);123      return null;124    default:125      return null;126  }127}128function unwindInterruptedWork(interruptedWork: Fiber) {129  switch (interruptedWork.tag) {130    case ClassComponent: {131      const childContextTypes = interruptedWork.type.childContextTypes;132      if (childContextTypes !== null && childContextTypes !== undefined) {133        popLegacyContext(interruptedWork);134      }135      break;136    }137    case HostRoot: {138      popHostContainer(interruptedWork);139      popTopLevelLegacyContextObject(interruptedWork);140      resetMutableSourceWorkInProgressVersions();141      break;142    }143    case HostComponent: {144      popHostContext(interruptedWork);145      break;146    }147    case HostPortal:148      popHostContainer(interruptedWork);149      break;150    case SuspenseComponent:151      popSuspenseContext(interruptedWork);152      break;153    case SuspenseListComponent:154      popSuspenseContext(interruptedWork);155      break;156    case ContextProvider:157      popProvider(interruptedWork);158      break;159    case OffscreenComponent:160    case LegacyHiddenComponent:161      popRenderLanes(interruptedWork);162      break;163    default:164      break;165  }166}...

ReactFiberUnwindWork.new.js

Source: ReactFiberUnwindWork.new.js

...114    case HostPortal:115      popHostContainer(workInProgress);116      return null;117    case ContextProvider:118      popProvider(workInProgress);119      return null;120    case OffscreenComponent:121    case LegacyHiddenComponent:122      popRenderLanes(workInProgress);123      return null;124    default:125      return null;126  }127}128function unwindInterruptedWork(interruptedWork: Fiber) {129  switch (interruptedWork.tag) {130    case ClassComponent: {131      const childContextTypes = interruptedWork.type.childContextTypes;132      if (childContextTypes !== null && childContextTypes !== undefined) {133        popLegacyContext(interruptedWork);134      }135      break;136    }137    case HostRoot: {138      popHostContainer(interruptedWork);139      popTopLevelLegacyContextObject(interruptedWork);140      resetMutableSourceWorkInProgressVersions();141      break;142    }143    case HostComponent: {144      popHostContext(interruptedWork);145      break;146    }147    case HostPortal:148      popHostContainer(interruptedWork);149      break;150    case SuspenseComponent:151      popSuspenseContext(interruptedWork);152      break;153    case SuspenseListComponent:154      popSuspenseContext(interruptedWork);155      break;156    case ContextProvider:157      popProvider(interruptedWork);158      break;159    case OffscreenComponent:160    case LegacyHiddenComponent:161      popRenderLanes(interruptedWork);162      break;163    default:164      break;165  }166}...

ReactFiberUnwindWork.js

Source: ReactFiberUnwindWork.js

...95    case HostPortal:96      popHostContainer(workInProgress);97      return null;98    case ContextProvider:99      popProvider(workInProgress);100      return null;101    default:102      return null;103  }104}105function unwindInterruptedWork(interruptedWork: Fiber) {106  switch (interruptedWork.tag) {107    case ClassComponent: {108      const childContextTypes = interruptedWork.type.childContextTypes;109      if (childContextTypes !== null && childContextTypes !== undefined) {110        popLegacyContext(interruptedWork);111      }112      break;113    }114    case HostRoot: {115      popHostContainer(interruptedWork);116      popTopLevelLegacyContextObject(interruptedWork);117      break;118    }119    case HostComponent: {120      popHostContext(interruptedWork);121      break;122    }123    case HostPortal:124      popHostContainer(interruptedWork);125      break;126    case SuspenseComponent:127      popSuspenseContext(interruptedWork);128      break;129    case SuspenseListComponent:130      popSuspenseContext(interruptedWork);131      break;132    case ContextProvider:133      popProvider(interruptedWork);134      break;135    default:136      break;137  }138}...

ReactFiberNewContext.js

Source: ReactFiberNewContext.js

...11import type {StackCursor, Stack} from './ReactFiberStack';12import warning from 'fbjs/lib/warning';13export type NewContext = {14  pushProvider(providerFiber: Fiber): void,15  popProvider(providerFiber: Fiber): void,16};17export default function(stack: Stack) {18  const {createCursor, push, pop} = stack;19  const providerCursor: StackCursor<Fiber | null> = createCursor(null);20  const valueCursor: StackCursor<mixed> = createCursor(null);21  const changedBitsCursor: StackCursor<number> = createCursor(0);22  let rendererSigil;23  if (__DEV__) {24    // Use this to detect multiple renderers using the same context25    rendererSigil = {};26  }27  function pushProvider(providerFiber: Fiber): void {28    const context: ReactContext<any> = providerFiber.type.context;29    push(changedBitsCursor, context._changedBits, providerFiber);30    push(valueCursor, context._currentValue, providerFiber);31    push(providerCursor, providerFiber, providerFiber);32    context._currentValue = providerFiber.pendingProps.value;33    context._changedBits = providerFiber.stateNode;34    if (__DEV__) {35      warning(36        context._currentRenderer === null ||37          context._currentRenderer === rendererSigil,38        'Detected multiple renderers concurrently rendering the ' +39          'same context provider. This is currently unsupported.',40      );41      context._currentRenderer = rendererSigil;42    }43  }44  function popProvider(providerFiber: Fiber): void {45    const changedBits = changedBitsCursor.current;46    const currentValue = valueCursor.current;47    pop(providerCursor, providerFiber);48    pop(valueCursor, providerFiber);49    pop(changedBitsCursor, providerFiber);50    const context: ReactContext<any> = providerFiber.type.context;51    context._currentValue = currentValue;52    context._changedBits = changedBits;53  }54  return {55    pushProvider,56    popProvider,57  };58}

index.js

Source: index.js

1/********************************************************************************2 * Copyright (c) 2020 Cedalo AG3 *4 * This program and the accompanying materials are made available under the 5 * terms of the Eclipse Public License 2.0 which is available at6 * http://www.eclipse.org/legal/epl-2.0.7 *8 * SPDX-License-Identifier: EPL-2.09 *10 ********************************************************************************/11const PopProvider = require('./src/PopProvider');12const PopProviderConfiguration = require('./src/PopProviderConfiguration');13const PopConsumer = require('./src/PopConsumer');14const PopConsumerConfiguration = require('./src/PopConsumerConfiguration');15module.exports = {16	Provider: PopProvider,17	PopConsumer,18	PopConsumerConfiguration,19	PopProviderConfiguration...

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.screenshot({ path: 'example.png' });7  await browser.close();8})();9const { popProvider } = require('playwright');10popProvider().then((provider) => {11  console.log(provider);12});13const { chromium } = require('playwright');14const { popProvider } = 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  popProvider().then((provider) => {22    console.log(provider);23  });24})();

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.webkit.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  await page.screenshot({ path: `example.png` });7  await browser.close();8})();9const playwright = require('playwright');10(async () => {11  const browser = await playwright.webkit.launch();12  const context = await browser.newContext();13  const page = await context.newPage();14  await page.screenshot({ path: `example.png` });15  await browser.close();16})();17const playwright = require('playwright');18(async () => {19  const browser = await playwright.webkit.launch();20  const context = await browser.newContext();21  const page = await context.newPage();22  await page.screenshot({ path: `example.png` });23  await browser.close();24})();25const playwright = require('playwright');26(async () => {27  const browser = await playwright.webkit.launch();28  const context = await browser.newContext();29  const page = await context.newPage();30  await page.screenshot({ path: `example.png` });31  await browser.close();32})();33const playwright = require('playwright');34(async () => {35  const browser = await playwright.webkit.launch();36  const context = await browser.newContext();37  const page = await context.newPage();38  await page.screenshot({ path: `example.png` });39  await browser.close();40})();41const playwright = require('playwright');42(async () => {43  const browser = await playwright.webkit.launch();44  const context = await browser.newContext();45  const page = await context.newPage();46  await page.screenshot({ path: `example.png` });47  await browser.close();48})();49const playwright = require('

Using AI Code Generation

1const { popProvider } = require('playwright/lib/server/browserType');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  const popProviderObject = await popProvider();8  await browser.close();9})();10{11}12const { popProvider } = require('playwright/lib/server/browserType');13const popProviderObject = await popProvider();14{15}16newPage()17close()18cookies()19addCookies()20clearCookies()21grantPermissions()22clearPermissions()23setGeolocation()24setExtraHTTPHeaders()25setOffline()26setHTTPCredentials()

Using AI Code Generation

1const { popProvider } = require('playwright/lib/server/browserType');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  await context.newPage();7  await context.newPage();8  await browser.close();9  const lastBrowser = popProvider();10  console.log(lastBrowser);11})();12const { popProvider } = require('playwright/lib/server/browserType');13const { chromium } = require('playwright');14(async () => {15  const browser = await chromium.launch();16  const context = await browser.newContext();17  await context.newPage();18  await context.newPage();19  await browser.close();20  const lastBrowser = popProvider();21  console.log(lastBrowser);22})();23const { popProvider } = require('playwright/lib/server/browserType');24const { chromium } = require

Using AI Code Generation

1const { chromium } = require('playwright');2const { popProvider } = require('playwright/lib/server/browserType');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.screenshot({ path: 'example.png' });8  await browser.close();9  await browser.close()

Using AI Code Generation

1const { popProvider } = require('playwright/lib/server/browserType');2const { popProvider } = require('playwright/lib/server/browserType');3const { popProvider } = require('playwright/lib/server/browserType');4const { chromium } = require('playwright');5(async () => {6  const provider = popProvider();7  const browser = await chromium.launch();8  const context = await browser.newContext();9  const page = await context.newPage();10  await page.screenshot({ path: 'example.png' });11  await browser.close();12  provider.dispose();13})();14const { chromium } = require('playwright');15(async () => {16  const provider = popProvider();17  const browser = await chromium.launch();18  const context = await browser.newContext();19  const page = await context.newPage();20  await page.screenshot({ path: 'example.png' });21  await browser.close();22  provider.dispose();23})();24const { chromium } = require('playwright');25(async () => {26  const provider = popProvider();27  const browser = await chromium.launch();28  const context = await browser.newContext();29  const page = await context.newPage();30  await page.screenshot({ path: 'example.png' });31  await browser.close();32  provider.dispose();33})();34const { chromium } = require('playwright');35(async () => {36  const provider = popProvider();37  const browser = await chromium.launch();38  const context = await browser.newContext();39  const page = await context.newPage();40  await page.screenshot({ path: 'example.png' });41  await browser.close();42  provider.dispose();43})();44const { chromium } = require('playwright');45(async () => {46  const provider = popProvider();47  const browser = await chromium.launch();48  const context = await browser.newContext();49  const page = await context.newPage();50  await page.screenshot({ path: 'example.png' });51  await browser.close();52  provider.dispose();53})();54const { chromium } = require('playwright');55(async () => {56  const provider = popProvider();

Using AI Code Generation

1const { popProvider } = require('playwright/lib/server/browserType');2(async () => {3  const browser = await popProvider();4  const page = await browser.newPage();5  await browser.close();6})();

Using AI Code Generation

1const { popProvider } = require('playwright/lib/internal/transport/transport');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 page.screenshot({ path: 'example.png' });8  await browser.close();9  await popProvider(browser);10})();

StackOverFlow community discussions

Questions

Discussion

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

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

Running Playwright in Azure Function

firefox browser does not start in playwright

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

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

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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:

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