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How to use dedupeHooks method in Playwright Internal

Best JavaScript code snippet using playwright-internal

interceptor.js

...21      : Array.isArray(childVal)22        ? childVal : [childVal]23    : parentVal24  return res25    ? dedupeHooks(res)26    : res27}2829function dedupeHooks (hooks) {30  const res = []31  for (let i = 0; i < hooks.length; i++) {32    if (res.indexOf(hooks[i]) === -1) {33      res.push(hooks[i])34    }35  }36  return res37}3839function removeHook (hooks, hook) {
...

vue1.js

Source: vue1.js

...133          ? childVal134          : [childVal]135      : parentVal;136    return res137      ? dedupeHooks(res)138      : res139  }140  function dedupeHooks (hooks) {141    var res = [];142    for (var i = 0; i < hooks.length; i++) {143      if (res.indexOf(hooks[i]) === -1) {144        res.push(hooks[i]);145      }146    }147    console.log('res',res)148    return res149  }150function initState (vm) {151    var opts = vm.$options;...

options.js

Source: options.js

...19        ? childVal20        : [childVal]21    : parentVal22  return res23    ? dedupeHooks(res)24    : res25}26function dedupeHooks (hooks) {27  const res = []28  for (let i = 0; i < hooks.length; i++) {29    if (res.indexOf(hooks[i]) === -1) {30      res.push(hooks[i])31    }32  }33  return res34}35lifecycle.get('cml.hooks').forEach(hook => {36  strats[hook] = mergeHook37})...

merge-inverse-hooks.js

Source: merge-inverse-hooks.js

...7      ? makeSureIsArray(childVal).concat(parentVal)8      : makeSureIsArray(childVal)9    : parentVal;10  return res11    ? dedupeHooks(res)12    : res13}14const makeSureIsArray = (childVal) => Array.isArray(childVal) ? childVal : [childVal];15const dedupeHooks = (hooks) => {16  const res = []17  for (let i = 0; i < hooks.length; i++) {18    if (res.indexOf(hooks[i]) === -1) {19      res.push(hooks[i])20    }21  }22  return res...

Using AI Code Generation

1const { dedupeHooks } = require('@playwright/test/lib/test');2const { test } = require('@playwright/test');3test('test', async ({ page }) => {4});5dedupeHooks(test);6[Apache 2.0](LICENSE)

Using AI Code Generation

1const { dedupeHooks } = require('playwright-core/lib/utils/utils');2  () => console.log(1),3  () => console.log(2),4  () => console.log(3),5  () => console.log(4),6  () => console.log(5),7];8const dedupedHooks = dedupeHooks(hooks);9dedupedHooks.forEach((hook) => hook());

Using AI Code Generation

1const { Playwright } = require('playwright');2const playwright = new Playwright();3const { dedupeHooks } = playwright._internalApi;4const { Playwright } = require('playwright');5const playwright = new Playwright();6const { dedupeHooks } = playwright._internalApi;7const { test, expect } = require('@playwright/test');8const { describe, it } = test;9const { test, expect } = require('@playwright/test');10const { describe, it } = test;11describe('test', () => {12  it('should pass', async ({ page }) => {13    expect(await page.title()).toBe('Playwright');14  });15});16describe('test', () => {17  it('should pass', async ({ page }) => {18    expect(await page.title()).toBe('Playwright');19  });20});21const { Playwright } = require('playwright');22const playwright = new Playwright();23const { dedupeHooks } = playwright._internalApi;24const { Playwright } = require('playwright');25const playwright = new Playwright();26const { dedupeHooks } = playwright._internalApi;27const { test, expect } = require('@playwright/test');28const { describe, it } = test;29const { test, expect } = require('@playwright/test');30const { describe, it } = test;31describe('test', () => {32  it('should pass', async ({ page }) => {33    expect(await page.title()).toBe('Playwright');34  });35});36describe('test', () => {37  it('should pass', async ({ page }) => {38    expect(await page.title()).toBe('Playwright');39  });40});41const { Playwright } = require('playwright');42const playwright = new Playwright();43const { dedupeHooks } = playwright._internalApi;

Using AI Code Generation

1const { Playwright } = require('playwright-core/lib/server/playwright.js');2(async () => {3  const playwright = new Playwright(__dirname);4  const browserServer = await playwright.chromium.launchServer({5  });6  const browser = await playwright.chromium.connect({7    wsEndpoint: browserServer.wsEndpoint(),8  });9  const context = await browser.newContext({10  });11  const page = await context.newPage();12  await page.screenshot({ path: `google.png` });13  await browser.close();14  await browserServer.close();15})();

Using AI Code Generation

1const { dedupeHooks } = require('playwright/lib/utils/utils');2const { describe, beforeAll, afterAll, beforeEach, afterEach, test } = require('@playwright/test');3const hooks = [beforeAll, afterAll, beforeEach, afterEach];4const dedupedHooks = dedupeHooks(hooks);5console.log(dedupedHooks);6const { dedupeHooks } = require('playwright/lib/utils/utils');7const { describe, beforeAll, afterAll, beforeEach, afterEach, test } = require('@playwright/test');8const hooks = [beforeAll, afterAll, beforeEach, beforeEach, afterEach, afterEach];9const dedupedHooks = dedupeHooks(hooks);10console.log(dedupedHooks);11const { dedupeHooks } = require('playwright/lib/utils/utils');12const { describe, beforeAll, afterAll, beforeEach, afterEach, test } = require('@playwright/test');13const hooks = [beforeAll, beforeAll, afterAll, afterAll, beforeEach, beforeEach, afterEach, afterEach];14const dedupedHooks = dedupeHooks(hooks);15console.log(dedupedHooks);16const { dedupeHooks } = require('playwright/lib/utils/utils');17const { describe, beforeAll, afterAll, beforeEach, afterEach, test } = require('@playwright/test');18const hooks = [beforeAll, afterAll, beforeEach, afterEach, beforeAll, afterAll, beforeEach, afterEach];19const dedupedHooks = dedupeHooks(hooks);20console.log(dedupedHooks);21const { dedupeHooks } = require('playwright/lib/utils/utils');22const { describe, beforeAll, afterAll, beforeEach, afterEach, test } = require('@playwright/test');23const hooks = [beforeAll, afterAll, beforeEach, afterEach, beforeAll, afterAll, beforeEach, afterEach, beforeAll, afterAll, beforeEach, afterEach];24const dedupedHooks = dedupeHooks(hooks);25console.log(dedupedHooks);

Using AI Code Generation

1const { dedupeHooks } = require('playwright-core/lib/utils/utils');2const { test } = require('@playwright/test');3const { expect } = require('chai');4test.describe('Playwright Internal', () => {5  test('dedupeHooks', async ({ page }) => {6    let count = 0;7    const hook1 = async () => {8      count++;9    };10    const hook2 = async () => {11      count++;12    };13    const hook3 = async () => {14      count++;15    };16    const hook4 = async () => {17      count++;18    };19    const hook5 = async () => {20      count++;21    };22    const hook6 = async () => {23      count++;24    };25    const hook7 = async () => {26      count++;27    };28    const hook8 = async () => {29      count++;30    };31    const hook9 = async () => {32      count++;33    };34    const hook10 = async () => {35      count++;36    };37    const hook11 = async () => {38      count++;39    };40    const hook12 = async () => {41      count++;42    };43    const hook13 = async () => {44      count++;45    };46    const hook14 = async () => {47      count++;48    };49    const hook15 = async () => {50      count++;51    };52    const hook16 = async () => {53      count++;54    };55    const hook17 = async () => {56      count++;57    };58    const hook18 = async () => {59      count++;60    };61    const hook19 = async () => {62      count++;63    };64    const hook20 = async () => {65      count++;66    };67    const hook21 = async () => {68      count++;69    };70    const hook22 = async () => {71      count++;72    };73    const hook23 = async () => {74      count++;75    };76    const hook24 = async () => {77      count++;78    };79    const hook25 = async () => {80      count++;81    };82    const hook26 = async () => {83      count++;84    };85    const hook27 = async () => {86      count++;87    };88    const hook28 = async () => {89      count++;90    };91    const hook29 = async () => {92      count++;93    };94    const hook30 = async () => {95      count++;96    };97    const hook31 = async () => {98      count++;

Using AI Code Generation

1const { dedupeHooks } = require('playwright/lib/utils/utils');2const { test } = require('playwright-test');3test.describe('Hooks', () => {4  test.beforeEach(async ({ page }) => {5  });6  test('test 1', async ({ page }) => {7    await page.click('text=Get Started');8  });9  test('test 2', async ({ page }) => {10    await page.click('text=Get Started');11  });12});13test.describe('Hooks', () => {14  test.beforeEach(async ({ page }) => {15  });16  test('test 3', async ({ page }) => {17    await page.click('text=Get Started');18  });19});20test('test 4', async ({ page }) => {21  await page.click('text=Get Started');22});23test('test 5', async ({ page }) => {24  await page.click('text=Get Started');25});26dedupeHooks(test);27test.describe('Hooks', () => {28  test.beforeEach(async ({ page }) => {29  });30  test('test 1', async ({ page }) => {31    await page.click('text=Get Started');32  });33  test('test 2', async ({ page }) => {34    await page.click('text=Get Started');35  });36  test('test 3', async ({ page }) => {37    await page.click('text=Get Started');38  });39});40test('test 4', async ({ page }) => {41  await page.click('text=Get Started');42});43test('test 5', async ({ page }) => {44  await page.click('text=Get Started');45});46test.describe('Hooks', () => {47  test.beforeEach(async ({ page }) => {48  });49  test('

StackOverFlow community discussions

Questions

Discussion

Running Playwright in Azure Function

firefox browser does not start in playwright

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

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?

I played with your example for a while and I got the same errors. These are the things I found that made my example work:

It must be Linux. I know that you mentioned that you picked a Linux plan. But I found that in VS Code that part is hidden, and on the Web the default is Windows. This is important because only the Linux plan runs npm install on the server.

Make sure that you are building on the server. You can find this option in the VS Code Settings:

Make sure you set the environment variable PLAYWRIGHT_BROWSERS_PATH, before making the publish.

https://stackoverflow.com/questions/63949978/running-playwright-in-azure-function

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

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

Blogs

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24 Testing Scenarios you should not automate with Selenium

While there is a huge demand and need to run Selenium Test Automation, the experts always suggest not to automate every possible test. Exhaustive Testing is not possible, and Automating everything is not sustainable.

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.

What will come after “agile”?

I think that probably most development teams describe themselves as being “agile” and probably most development teams have standups, and meetings called retrospectives.There is also a lot of discussion about “agile”, much written about “agile”, and there are many presentations about “agile”. A question that is often asked is what comes after “agile”? Many testers work in “agile” teams so this question matters to us.

[LambdaTest Spartans Panel Discussion]: What Changed For Testing & QA Community And What Lies Ahead

The rapid shift in the use of technology has impacted testing and quality assurance significantly, especially around the cloud adoption of agile development methodologies. With this, the increasing importance of quality and automation testing has risen enough to deliver quality work.

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.
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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.