Rails 8 authentication setup for controller test

controller_test_login_as.rb

# test/test_helper.rb

def login
  post session_url, params: { email_address: users(:one).email_address, password: "password" }
end

# test/controllers/campaigns_controller_test.rb

class CampaignsControllerTest < ActionDispatch::IntegrationTest
  setup do
    login
    @campaign = campaigns(:one)
  end
end