Can I disable "Change back to Google?" warning during e2e Puppeteer test?

[Juraj M.]

I'm using Puppeteer to test my extension that overrides New tab page, but each time the test runs, it displays this warning:

I'm now writing a lot of new tests so I need to see what's happening or debug when needed and this warning is getting quite annoying... 

Is there some flag I could use maybe?

[Juraj M.]

I've managed to do it, but it's not exactly easy...

I've remembered I've asked a similar question before:
https://groups.google.com/a/chromium.org/g/chromium-extensions/c/c_4HY_FZF1c/m/h_vlZthBAQAJ

Where the local extensions guru wOxxOm suggested preparing folder with "Preferences" file (thank you wOxxOm!).

This time, the flag "ack_ntp_bubble" is set in the "Secure Preferences" file.

So, what I did is to run the tests, approve the message, locate the current profile folder in the OS "Temp" folder, then copy the "Secure Preferences" file in a new folder - which will be used a template.

Then each time I run the tests, I'll copy this folder into the Temp folder and instruct Puppeteer to use this folder as profile.

In code it looks something like this:

const pathToExtension = path.join(process.cwd(), 'chrome_dev');
const templateProfilePath = 'C:\\tmp\\chrome_dev_profile';
const tempProfilePath = path.join(tmpdir(), `gsd_chrome_dev_profile_${Date.now()}`);
await cp(templateProfilePath, tempProfilePath, {recursive: true});
this.browser = await puppeteer.launch({
  userDataDir: tempProfilePath, // this works, but it's persistent (also it changes the profile!)
  headless: false,
  devtools,
  slowMo,
  executablePath: 'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe',
  args: [
    `--disable-extensions-except=${pathToExtension}`,
    `--load-extension=${pathToExtension}`,
    // `--user-data-dir=C:\\tmp\\chrome_dev_profile`,
  ],
});
this.browser.on('disconnected', async () => {
  await timeoutPromise(1e3);
  await rm(tempProfilePath, {recursive: true, force: true})
});
this.extPage = await this.browser.newPage();