Rails integration test with selenium as webdriver - can't sign_in

Question

I have a very simple integration test

require 'integration_test_helper'

Capybara.current_driver = :rack_test

class AdminSignsInTest < ActionDispatch::IntegrationTest

  test 'can sign in' do

    email = '[email protected]'

    password = 'secret_password'

    Admin.create email: email, password: password

    visit new_admin_session_path

    fill_in 'admin_email', with: email

    fill_in 'admin_password', with: password

    click_button I18n.t('devise.views.sign_in')

    assert_equal I18n.t('devise.sessions.signed_in'), find('p.notice').text

  end

end

When I set the Capybara driver to rack_test test passes, but when I set it to selenium, it fails with 'Invalid email or password.' on the login page (I'm using Devise). What am I doing wrong?

Answer 1

You'll have to check use_transactional_fixtures. When using transactional fixtures, because Selenium (or, any of the external drivers, which aren't Rack::Test) do not have access to information that has been written to the database. (as the transaction hasn't been "Committed")

You can resolve this within your test_helper.rb using the below code snippet:

 class ActionDispatch::IntegrationTest

self.use_transactional_fixtures = false

end

At the same time, you may want to look into something like Database Cleaner, as without transactional fixtures, your database will become untidy.