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How to use setFileChooserInterceptedNoReply method in Playwright Internal

Best JavaScript code snippet using playwright-internal

page.js

Source:page.js

...536  workers() {537    return [...this._workers];538  }539  on(event, listener) {540    if (event === _events.Events.Page.FileChooser && !this.listenerCount(event)) this._channel.setFileChooserInterceptedNoReply({541      intercepted: true542    });543    super.on(event, listener);544    return this;545  }546  addListener(event, listener) {547    if (event === _events.Events.Page.FileChooser && !this.listenerCount(event)) this._channel.setFileChooserInterceptedNoReply({548      intercepted: true549    });550    super.addListener(event, listener);551    return this;552  }553  off(event, listener) {554    super.off(event, listener);555    if (event === _events.Events.Page.FileChooser && !this.listenerCount(event)) this._channel.setFileChooserInterceptedNoReply({556      intercepted: false557    });558    return this;559  }560  removeListener(event, listener) {561    super.removeListener(event, listener);562    if (event === _events.Events.Page.FileChooser && !this.listenerCount(event)) this._channel.setFileChooserInterceptedNoReply({563      intercepted: false564    });565    return this;566  }567  async pause() {568    await this.context()._channel.pause();569  }570  async pdf(options = {}) {571    const transportOptions = { ...options572    };573    if (transportOptions.margin) transportOptions.margin = { ...transportOptions.margin574    };575    if (typeof options.width === 'number') transportOptions.width = options.width + 'px';576    if (typeof options.height === 'number') transportOptions.height = options.height + 'px';...

pageDispatcher.js

Source:pageDispatcher.js

...161  }162  async close(params, metadata) {163    await this._page.close(metadata, params);164  }165  async setFileChooserInterceptedNoReply(params, metadata) {166    await this._page._setFileChooserIntercepted(params.intercepted);167  }168  async keyboardDown(params, metadata) {169    await this._page.keyboard.down(params.key);170  }171  async keyboardUp(params, metadata) {172    await this._page.keyboard.up(params.key);173  }174  async keyboardInsertText(params, metadata) {175    await this._page.keyboard.insertText(params.text);176  }177  async keyboardType(params, metadata) {178    await this._page.keyboard.type(params.text, params);179  }...

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.route('**/*', route => {7    route.continue();8  });9  await page.route('**/filechooser', route => {10    route.fulfill({11      body: JSON.stringify({ 'intercepted': true }),12    });13  });14  const [fileChooser] = await Promise.all([15    page.waitForEvent('filechooser'),16    page.click('input#file-upload'),17  ]);18  await fileChooser.setFiles('/home/username/file.txt');19  await page.click('input#file-submit');20  await page.waitForSelector('div#uploaded-files');21  const uploadedFiles = await page.innerText('div#uploaded-files');22  console.log(uploadedFiles);23  await browser.close();24})();

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.route('**/*', route => route.continue());7  await page.click('text=Try it');8  await page.waitForSelector('iframe');9  const frame = page.frame({ name: 'iframeResult' });10  await frame.click('input[type="file"]');11  await page._delegate.setInputFiles('input[type="file"]', ['/home/user/Downloads/test.pdf']);12  await page.waitForTimeout(5000);13  await browser.close();14})();15    at runMicrotasks (<anonymous>)16    at processTicksAndRejections (internal/process/task_queues.js:93:5)17    at async Promise.all (index 0)18    at async DispatcherConnection.dispatch (/home/user/playwright-test/node_modules/playwright/lib/server/cjs/dispatchers/dispatcher.js:198:63)19    at async DispatcherConnection.onMessage (/home/user/playwright-test/node_modules/playwright/lib/server/cjs/dispatchers/dispatcher.js:184:9)20    at async WebSocketTransport.onmessage (/home/user/playwright-test/node_modules/playwright/lib/server/cjs/dispatchers/dispatcher.js:39:9)21    at async WebSocket.onMessage (/home/user/playwright-test/node_modules/ws/lib/event-target.js:132:16)22    at async WebSocket.emit (events.js:315:20)

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.route('**/*', route => route.continue());7  await page.evaluate(() => {8    window.__playwright__internal__setFileChooserInterceptedNoReply(true);9  });10  await page.click('input[type=file]');11  await browser.close();12})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  await context._setFileChooserInterceptedNoReply(true);6  const page = await context.newPage();7  await page.click('input[type="file"]');8  await page.waitForFileChooser();9  await page.close();10  await browser.close();11})();12const { chromium } = require('playwright');13(async () => {14  const browser = await chromium.launch();15  const context = await browser.newContext();16  await context._setFileChooserInterceptedNoReply(true);17  const page = await context.newPage();18  await page.click('input[type="file"]');19  await page.waitForFileChooser();20  await page.close();21  await browser.close();22})();23const { chromium } = require('playwright');24(async () => {25  const browser = await chromium.launch();26  const context = await browser.newContext();27  await context._setFileChooserInterceptedNoReply(true);28  const page = await context.newPage();29  await page.click('input[type="file"]');30  await page.waitForFileChooser();31  await page.close();32  await browser.close();33})();34const { chromium } = require('playwright');35(async () => {36  const browser = await chromium.launch();37  const context = await browser.newContext();38  await context._setFileChooserInterceptedNoReply(true);39  const page = await context.newPage();40  await page.click('input[type="file"]');41  await page.waitForFileChooser();42  await page.close();

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.route("**/*", route => route.continue());7    await page.setInputFiles('input[type=file]', 'C:\\Users\\user\\Desktop\\file.txt');8    await page.click('input[type=submit]');9    await browser.close();10})();

Using AI Code Generation

1const { chromium } = require('playwright');2const fs = require('fs');3const path = require('path');4const os = require('os');5(async () => {6  const browser = await chromium.launch({ headless: false, slowMo: 50 });7  const context = await browser.newContext();8  const page = await context.newPage();9  await page.route('**', route => {10    const url = route.request().url();11    if (url.endsWith('.pdf')) {12      route.fulfill({13        path: path.join(__dirname, 'dummy.pdf'),14        headers: {15        },16      });17    } else {18      route.continue();19    }20  });21  await page._client.send('Page.setFileChooserInterceptedNoReply', {22  });23  const [fileChooser] = await Promise.all([24    page.waitForEvent('filechooser'),25  ]);26  await fileChooser.setFiles(path.join(__dirname, 'dummy.pdf'));27  await page.waitForTimeout(5000);28  await browser.close();29})();

Using AI Code Generation

1const { contextBridge } = require('electron');2contextBridge.exposeInMainWorld('electron', {3    setFileChooserInterceptedNoReply: (page, value) => {4        page.setFileChooserInterceptedNoReply(value);5    }6});7const { app, BrowserWindow, ipcMain } = require('electron');8const path = require('path');9function createWindow() {10    const win = new BrowserWindow({11        webPreferences: {12        }13    });14    win.loadFile(path.join(__dirname, 'index.html'));15}16app.whenReady().then(() => {17    createWindow();18});19const { electron } = require('playwright');20const { chromium } = require('playwright-chromium');21(async () => {22    const browser = await chromium.launch({23    });24    const context = await browser.newContext();25    const page = await context.newPage();26    await page.click('[id

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.exposeFunction("interceptFileChooser", (filePaths) => {7    console.log("interceptFileChooser called with ", filePaths);8  });9  await page.route("**/*", (route, request) => {10    if (request.url().includes("setFileChooserInterceptedNoReply")) {11      route.fulfill({12        body: JSON.stringify({ value: null }),13      });14    } else {15      route.continue();16    }17  });18  const [fileChooser] = await Promise.all([19    page.waitForEvent("filechooser"),20    page.click("#file-input"),21  ]);22  await fileChooser.setFiles("./file-to-upload.png");23  await browser.close();24})();25-   [FileChooser](#filechooser)26    -   [Parameters](#parameters)27    -   [setFiles](#setfiles)28        -   [Parameters](#parameters-1)29    -   [accept](#accept)30    -   [multiple](#multiple)31    -   [name](#name)32    -   [element](#element)33-   [ElementHandle](#elementhandle)34    -   [Parameters](#parameters-2)35    -   [waitForFileChooser](#waitforfilechooser)36        -   [Parameters](#parameters-3)37-   [Page](#page)38    -   [Parameters](#parameters-4)39    -   [waitForFileChooser](#waitforfilechooser-1)40        -   [Parameters](#parameters-5)41    -   [exposeFunction](#exposefunction)42        -   [Parameters](#parameters-6)43    -   [route](#route)44        -   [Parameters](#parameters-7)

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.route('**/*', route => {7    route.fulfill({8    });9  });10  await page.evaluate(() => {11    const fileChooserPromise = new Promise(resolve => {12      document.getElementById('file-input').addEventListener('click', event => resolve(event.target.files), {once: true});13    });14    document.getElementById('file-input').click();15    return fileChooserPromise;16  });17  await page.setFileChooserInterceptedNoReply(true);18  await page.evaluate(() => {19    document.getElementById('file-input').dispatchEvent(new Event('change', {bubbles: true}));20  });21  await page.setFileChooserInterceptedNoReply(false);22  await page.evaluate(async () => {23    const [fileChooser] = await Promise.all([24      window.waitForEvent('filechooser'),25      document.getElementById('file-input').click(),26    ]);27    await fileChooser.setFiles('/path/to/file.txt');28  });29  await browser.close();30})();

StackOverFlow community discussions

Questions

Discussion

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

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?

Running Playwright in Azure Function

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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