playwright: [BUG] page.on('dialog', ()=>{}) doesn't work when external URL handlers are opened. e.g. Telegram

Context:

Playwright Version: 1.17.1
Operating System: macOS 12.0.1
Node.js version: v17.0.1
Browser: Chromium
Extra:

const { chromium } = require('playwright');

(async () => {
  // const browser = await chromium.connectOverCDP('@todo:wsUrl');
  // const context = browser.contexts()[0];

  const context = await chromium.launch({ headless: false });

  const page = await context.newPage();
  page.on('dialog', async (dialog) => {
    console.log('dialog1', dialog.message());
    await dialog.dismiss();
  });
  await page.goto('https://t.me/wallstreetbets');
  page.on('dialog', async (dialog) => {
    console.log('dialog2', dialog.message());
    await dialog.dismiss();
  });
})();

Describe the bug Dialog still exists, and the two logs are not printed.

About this issue

Original URL
State: open
Created 3 years ago
Reactions: 11
Comments: 17 (3 by maintainers)

Most upvoted comments

@dgozman possible, you can avoid opening this type of dialog, by adding those two lines to your Dockerfile:

# to avoid a confirmation dialog for opening external URLs
RUN mkdir -p /etc/chromium/policies/managed  
RUN echo '{ "URLBlocklist": [ "<your_url_app>:*" ] }' > /etc/chromium/policies/managed/blocklist.json

in my case <your_url_app> = msteams

DarynaGrytsai on Aug 5, 2022

+1 for this bug. I recently hit this. (I think.)

I am doing this in my Javascript application code that’s run in the browser. On a mobile device in a real app, it would open the app that’s registered to handle the scheme.

document.location.href = "customscheme://whatever"

Out of the box, tests for this don’t work. This times out.

await page.waitForURL("customscheme://whatever")

I thought that I could stub it:

await page.route("customscheme://whatever", route => route.fulfill({status: 200, body: "ok"}))
await page.waitForURL("customscheme://whatever")

Stubbing does not seem to have any effect, still times out.

I wish there was a way to assert with Playwright that “navigation” to a custom URL scheme happens.

jaanus on Sep 7, 2023