Is there a way to set site permissions?

[brian-kephart]

Thanks for this great library!

My specific use case for altering site permissions is that I am testing a subscription workflow for push notifications, and I would like to test the user experience when the value of Notification.permission is "default", "granted", or "denied".

# in headless mode
browser.evaluate("Notification.permission") # => "denied"

# in non-headless mode
browser.evaluate("Notification.permission") # => "default"

I'm wondering if there is a way to set this value to "granted", or to modify site permissions in general. I could not find anything relevant to this in the README, the code, or the command line args.

[route]

@brian-kephart hey, you could try set permissions with https://chromedevtools.github.io/devtools-protocol/tot/Browser/#method-grantPermissions

browser.command("Browser.grantPermissions", permissions: ['notifications'], origin: 'https://example.com')

If that works please leave feedback or maybe send a PR ;)

[brian-kephart]

Thanks for the tip! I still can't change the permissions, though.

Something is happening, because the commands I tried (grantPermissions, setPermission, and resetPermissions) raise exceptions unless the arguments conform to the spec at the link you showed. However, even when the commands are accepted, the permission available in the browser still does not change.

browser.command "Browser.grantPermissions", permissions: ["notifications"] # returns {}
browser.evaluate "Notification.permission" # still "denied"

[route]

looks like a Chrome issue

puppeteer/puppeteer#3279
puppeteer/puppeteer#3241

[apmiller108]

I'm attempting to do something similar, but with clipboardReadWrite

page.driver.browser.command('Browser.grantPermissions', origin: page.server_url, permissions: ['clipboardReadWrite'])

This, however throws the following error:

Failure/Error: page.driver.browser.command('Browser.grantPermissions', origin: page.server_url, permissions: ['clipboardReadWrite'])
     
Ferrum::BrowserError:
   Permissions can't be granted in current context.

[route]

Apparently it's not fixed upstream