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How to use doClearPermissions method in Playwright Internal

Best JavaScript code snippet using playwright-internal

crBrowser.js

...371      browserContextId: this._browserContextId,372      permissions: filtered373    });374  }375  async doClearPermissions() {376    await this._browser._session.send('Browser.resetPermissions', {377      browserContextId: this._browserContextId378    });379  }380  async setGeolocation(geolocation) {381    (0, _browserContext.verifyGeolocation)(geolocation);382    this._options.geolocation = geolocation;383    for (const page of this.pages()) await page._delegate.updateGeolocation();384  }385  async setExtraHTTPHeaders(headers) {386    this._options.extraHTTPHeaders = headers;387    for (const page of this.pages()) await page._delegate.updateExtraHTTPHeaders();388  }389  async setOffline(offline) {...

browserContext.js

Source: browserContext.js

...154    await this.doGrantPermissions(resolvedOrigin, list);155  }156  async clearPermissions() {157    this._permissions.clear();158    await this.doClearPermissions();159  }160  setDefaultNavigationTimeout(timeout) {161    this._timeoutSettings.setDefaultNavigationTimeout(timeout);162  }163  setDefaultTimeout(timeout) {164    this._timeoutSettings.setDefaultTimeout(timeout);165  }166  async _loadDefaultContextAsIs(progress) {167    if (!this.pages().length) {168      const waitForEvent = _helper.helper.waitForEvent(progress, this, BrowserContext.Events.Page);169      progress.cleanupWhenAborted(() => waitForEvent.dispose);170      const page = await waitForEvent.promise;171      if (page._pageIsError) throw page._pageIsError;172    }...

ffBrowser.js

Source: ffBrowser.js

...289      browserContextId: this._browserContextId,290      permissions: filtered291    });292  }293  async doClearPermissions() {294    await this._browser._connection.send('Browser.resetPermissions', {295      browserContextId: this._browserContextId296    });297  }298  async setGeolocation(geolocation) {299    (0, _browserContext.verifyGeolocation)(geolocation);300    this._options.geolocation = geolocation;301    await this._browser._connection.send('Browser.setGeolocationOverride', {302      browserContextId: this._browserContextId,303      geolocation: geolocation || null304    });305  }306  async setExtraHTTPHeaders(headers) {307    this._options.extraHTTPHeaders = headers;...

wkBrowser.js

Source: wkBrowser.js

...236  }237  async doGrantPermissions(origin, permissions) {238    await Promise.all(this.pages().map(page => page._delegate._grantPermissions(origin, permissions)));239  }240  async doClearPermissions() {241    await Promise.all(this.pages().map(page => page._delegate._clearPermissions()));242  }243  async setGeolocation(geolocation) {244    (0, _browserContext.verifyGeolocation)(geolocation);245    this._options.geolocation = geolocation;246    const payload = geolocation ? { ...geolocation,247      timestamp: Date.now()248    } : undefined;249    await this._browser._browserSession.send('Playwright.setGeolocationOverride', {250      browserContextId: this._browserContextId,251      geolocation: payload252    });253  }254  async setExtraHTTPHeaders(headers) {...

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

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 { chromium } = require('playwright');10(async () => {11  const browser = await chromium.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  await context.clearPermissions();17  const browser2 = await chromium.launch();18  await browser2.close();19})();20const { chromium } = require('playwright');21(async () => {22  const browser = await chromium.launch();23  const context = await browser.newContext();24  const page = await context.newPage();25  await page.screenshot({ path: 'example.png' });26  await browser.close();27  await context.clearPermissions();28  const browser2 = await chromium.launch();29  await browser2.close();30})();31const { chromium } = require('playwright');32(async () => {33  const browser = await chromium.launch();34  const context = await browser.newContext();

Using AI Code Generation

1(async () => {2  const { chromium } = require('playwright');3  const browser = await chromium.launch();4  const context = await browser.newContext();5  await context.grantPermissions(['geolocation']);6  await context.clearPermissions();7  await browser.close();8})();9(async () => {10  const { chromium } = require('playwright');11  const browser = await chromium.launch();12  const context = await browser.newContext();13  await context.grantPermissions(['geolocation']);14  await context.clearPermissions();15  await browser.close();16})();17(async () => {18  const { chromium } = require('playwright');19  const browser = await chromium.launch();20  const context = await browser.newContext();21  await context.grantPermissions(['geolocation']);22  await context.clearPermissions();23  await browser.close();24})();25(async () => {26  const { chromium } = require('playwright');27  const browser = await chromium.launch();28  const context = await browser.newContext();29  await context.grantPermissions(['geolocation']);30  await context.clearPermissions();31  await browser.close();32})();

Using AI Code Generation

1const { doClearPermissions } = require('playwright-core/lib/server/chromium/crBrowser');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  await doClearPermissions(context);6  const page = await context.newPage();7  await browser.close();8})();

Using AI Code Generation

1const { doClearPermissions } = require('@playwright/test/lib/server/crBrowser');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 doClearPermissions(page);8  await page.close();9  await context.close();10  await browser.close();11})();

Using AI Code Generation

1const { doClearPermissions } = require('playwright/lib/server/chromium/crBrowser');2const browser = await chromium.launch();3const context = await browser.newContext();4await doClearPermissions(context);5await browser.close();6const { doGrantPermissions } = require('playwright/lib/server/chromium/crBrowser');7const browser = await chromium.launch();8const context = await browser.newContext();9await doGrantPermissions(context, ['geolocation']);10await browser.close();

Using AI Code Generation

1const { chromium } = require("playwright");2(async () => {3  const browser = await chromium.launch({ headless: false });4  const context = await browser.newContext();5  await context.clearPermissions();6  const page = await context.newPage();7  await page.screenshot({ path: "google.png" });8  await browser.close();9})();10const { chromium } = require("playwright");11(async () => {12  const browser = await chromium.launch({ headless: false });13  const context = await browser.newContext();14  const page = await context.newPage();15  await page.screenshot({ path: "google.png" });16  await browser.close();17})();18const { chromium } = require("playwright");19(async () => {20  const browser = await chromium.launch({ headless: false });21  const context = await browser.newContext();22  await context.addInitScript({ path: "/path/to/script.js" });23  const page = await context.newPage();24  await page.screenshot({ path: "google.png" });25  await browser.close();26})();27const { chromium } = require("playwright");28(async () => {29  const browser = await chromium.launch({ headless: false });

Using AI Code Generation

1const { test, expect } = require('@playwright/test');2const { doClearPermissions } = require('@playwright/test/lib/server/chromium/crBrowser');3test('test', async ({ page }) => {4  doClearPermissions(page.context());5  const title = await page.title();6  expect(title).toBe('Google');7});

Using AI Code Generation

1const { doClearPermissions } = require("playwright-core/lib/server/chromium/crBrowser");2await doClearPermissions(page);3await page.waitForTimeout(5000);4const { doGrantPermissions } = require("playwright-core/lib/server/chromium/crBrowser");5await doGrantPermissions(page, ["geolocation"]);6await page.waitForTimeout(5000);7const { doRevokePermissions } = require("playwright-core/lib/server/chromium/crBrowser");8await doRevokePermissions(page, ["geolocation"]);9await page.waitForTimeout(5000);10const { doUpdatePermissions } = require("playwright-core/lib/server/chromium/crBrowser");11await doUpdatePermissions(page, ["geolocation"]);12await page.waitForTimeout(5000);13const { doAcceptDownloads } = require("playwright-core/lib/server/chromium/crBrowser");14await doAcceptDownloads(page, true);15await page.waitForTimeout(5000);16const { doUpdateAppBanner } = require("playwright-core/lib/server/chromium/crBrowser");17await doUpdateAppBanner(page, true);18await page.waitForTimeout(5000);19const { doSetGeolocation } = require("playwright-core/lib/server/chromium/crBrowser");20await doSetGeolocation(page, { latitude: 34.0522, longitude: 118.2437 });21await page.waitForTimeout(5000);22const { doSetExtraHTTPHeaders } = require("playwright-core/lib/server/chromium/crBrowser");23await doSetExtraHTTPHeaders(page, { "foo": "bar" });

Using AI Code Generation

1const { doClearPermissions } = require('playwright-core/lib/server/browserContext');2await doClearPermissions();3await page.waitForTimeout(10000);4await browser.close();5const { chromium } = require("playwright");6(async () => {7  const browser = await chromium.launch({ headless: false });8  const context = await browser.newContext();9  await context.addInitScript({ path: "/path/to/script.js" });10  const page = await context.newPage();11  await page.screenshot({ path: "google.png" });12  await browser.close();13})();14const { chromium } = require("playwright");15(async () => {16  const browser = await chromium.launch({ headless: false });

Using AI Code Generation

1const { test, expect } = require('@playwright/test');2const { doClearPermissions } = require('@playwright/test/lib/server/chromium/crBrowser');3test('test', async ({ page }) => {4  doClearPermissions(page.context());5  const title = await page.title();6  expect(title).toBe('Google');7});

StackOverFlow community discussions

Questions

Discussion

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

firefox browser does not start in playwright

Running Playwright in Azure Function

firefox browser does not start in playwright

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?

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

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

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