Auto-generated controller test failing in new Rails app

rubyonrails-talk
1

Howdy :wave:

I’ve recently started learning Rails by using it for a personal project. I’m running into an issue with a Controller test that was autogenerated (when I created the model, I think?) Here’s the test:

require "test_helper"

class DaysControllerTest < ActionDispatch::IntegrationTest
  test "should get index" do
    get days_index_url
    assert_response :success
  end
end

However, when I run the test, I get the following error:

Error:
DaysControllerTest#test_should_get_index:
NameError: undefined local variable or method `days_index_url' for an instance of DaysControllerTest

This is in spite of the fact that I have defined a days#index method and included resources :days in my routes.rb file.

All of my attempts to find an explanation for why this might be happening have come up short. Any help would be greatly appreciated! :pray:

2

If you run rails routes in your terminal, it should list all the valid route helpers you have. It seems that for some reason the route got misnamed into days_index_url where it should probably be called days_url.

1 Like
3

(sending this again from the Web interface, because my e-mail reply got flagged as “machine-generated” by Discourse…)

If your controller is named day_controller.rb rather than days_controller.rb that’s a strong clue that it would need the index part in the route name. Check the actual model name of the controller. DayController vs DaysController. Which one do you have?

Walter

1 Like
4

Thank you both for taking the time to help! @walterdavis The file name is days_controller.rb with the class name DaysController. Does that sound right to you?

@hakunin bin/rails routes -c Day gives the following output:

  Prefix Verb   URI Pattern              Controller#Action
    days GET    /days(.:format)          days#index
         POST   /days(.:format)          days#create
 new_day GET    /days/new(.:format)      days#new
edit_day GET    /days/:id/edit(.:format) days#edit
     day GET    /days/:id(.:format)      days#show
         PATCH  /days/:id(.:format)      days#update
         PUT    /days/:id(.:format)      days#update
         DELETE /days/:id(.:format)      days#destroy
  search GET    /search(.:format)        days#index
    root GET    /                        days#index
5

Right, the output is telling you is that the helper to get the days#index route is days_url, not days_index_url. So your test should say:

require "test_helper"

class DaysControllerTest < ActionDispatch::IntegrationTest
  test "should get index" do
    get days_url # <== fix this line
    assert_response :success
  end
end
6

Ah, that makes sense. Thank you again for all your help!