How to open multiple isolated windows using Selenium?

[zedtux]

We have a test where we need to open 3 parallel sessions, which I tried to do using open_new_window(:window) and a driver configuring a remote Chrome (running in docker) in incognito mode (which I was wrongly supposing it would prevent windows to share session cookies).

I tried to use chrome profiles and wanted to open each window with a different profile, but I couldn't make it working because the test execution hangs when Capybara tries to open a new window (therefore it tries to create a new session on Selenium Grid).
When I kill the test, selenium takes the request and open the new Chrome window but it's too late.

Is there a way to open isolated windows with Capybara and Selenium?

[crawler]

@zedtux

I think you just need to create another Session instance, that's it. It behaves like documented in the Capybara::Session class

Example

describe 'Home page', :js do
  let(:another_session) { Capybara::Session.new(Capybara.current_session.mode, Capybara.current_session.app) }

  before {
    visit 'chrome://new-tab-page'
    another_session.visit 'chrome://new-tab-page'
  }

  it "same for all users" do
    evaluate_script("console.log(1, sessionStorage.setItem('thing','1'))")
    evaluate_script("console.log(1, sessionStorage.getItem('thing'))")
    another_session.evaluate_script("console.log(2, sessionStorage.getItem('thing'))")
    puts "--------------------------------"
    puts "PRIMARY SESSION", page.driver.browser.logs.get(:browser)
    puts "--------------------------------"
    puts
    puts "--------------------------------"
    puts "ANOTHER SESSION", another_session.driver.browser.logs.get(:browser)
    puts "--------------------------------"
    another_session.evaluate_script("console.log(2, sessionStorage.setItem('thing','2'))")
    another_session.evaluate_script("console.log(2, sessionStorage.getItem('thing'))")
    evaluate_script("console.log(1, sessionStorage.getItem('thing'))")
    puts "--------------------------------"
    puts "PRIMARY SESSION", page.driver.browser.logs.get(:browser)
    puts "--------------------------------"
    puts
    puts "--------------------------------"
    puts "ANOTHER SESSION", another_session.driver.browser.logs.get(:browser)
    puts "--------------------------------"

    expect(page).to have_text(/.*/)
    expect(another_session).to have_text(/.*/)
  end
end

Output:

Home page
Capybara starting Puma...
* Version 6.5.0, codename: Sky's Version
* Min threads: 0, max threads: 4
* Listening on http://0.0.0.0:43300
--------------------------------
PRIMARY SESSION
2025-05-01 19:28:29 +0300 INFO: console-api 2:39 1 undefined
2025-05-01 19:28:29 +0300 INFO: console-api 2:39 1 "1"
--------------------------------

--------------------------------
ANOTHER SESSION
2025-05-01 19:28:29 +0300 INFO: console-api 2:39 2 null
--------------------------------
--------------------------------
PRIMARY SESSION
2025-05-01 19:28:29 +0300 INFO: console-api 2:39 1 "1"
--------------------------------

--------------------------------
ANOTHER SESSION
2025-05-01 19:28:29 +0300 INFO: console-api 2:39 2 undefined
2025-05-01 19:28:29 +0300 INFO: console-api 2:39 2 "2"
--------------------------------
  same for all users

Finished in 2.22 seconds (files took 0.23616 seconds to load)
1 example, 0 failures

as you can see browser's sessionStorage isolated

[zedtux]

Thank you @crawler I will give it a try!