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

I think you can do as this:

delete cart_url(@cart), params: { 'session' => { :cart_id => @cart.id }}

Answer 2

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
  ..

Answer 3

It turns out that controller tests now inherit from ActionDispatch::IntegrationTest by default and the code that handles the behaviour I wanted sits in ActionController::TestCase.

So the fix for now is to do the following:

1 - modify your controller test to inherit from ActionController::TestCase

class SessionsControllerTest < ActionController::TestCase

2 - modify all of your http request calls to use symbolized action names instead of urls:

# so change this
get login_url

# to this
get :new

And then you should be able to use the new kw_args in your requests like so:

# now this will work fine
get :new, session: { user_id: user.id }

# and so will this
session[:user_id] = user.id

I'm going to open an issue on github later on as I imagine this behaviour is not intended. Thanks to @BoraMa for leading me to the answer

Answer 4

Try set session through open_session method

open_session do |sess|
  sess.get "/login", user_id: users(:stephen).id
  assert_redirected_to root_url, 'Expected redirect to root'
end