Unable to set session hash in Rails 5 controller test

Question

According to the Rails Edge Guide all ActionDispatch::IntegrationTest HTTP requests take optional named keyword arguments:

get post_url, params: { id: 12 }, se

Answer 1

In Rails 5 it is no longer possible to access session in controller tests: http://blog.napcs.com/2016/07/03/upgrading-rails-5-controller-tests/. The suggestion is to access the controller method that would set the appropriate session value for you. This comment shows and example of how you might work around this limitation: https://github.com/rails/rails/issues/23386#issuecomment-192954569

  # helper method
  def sign_in_as(name)
    post login_url, params: { sig: users(name).perishable_signature )
  end

class SomeControllerTest
  setup { sign_in_as 'david' }

  test 'the truth' do
  ..