Why rspec-rails not rendering my custom error pages ?

[Arup Rakshit]

Hi,

I am driving my own custom pages. I have followed exactly what is mentioned here: http://makandracards.com/makandra/12807-custom-error-pages-in-rails-3-2 .

Below is my controller :

class ErrorsController < ApplicationController
  def not_found
    respond_to do |format|
      format.html { render status: 404 }
      format.all  { render nothing: true, status: 404 }
    end
  end
   #..
end

# in developmen.rb I have below to test this behaviour
#   config.consider_all_requests_local = false
# Now when I am hiting this url: http://localhost:3000/users/55  getting the log

And here goes my spec :

require 'rails_helper'

describe ErrorsController, type: :controller do
  let(:user) { create :user }
  let(:login_with) { user }
  login_user

  before :each do
    Rails.application.config.consider_all_requests_local = false
    Rails.application.config.action_dispatch.show_exceptions = true
  end

  after :each do
    Rails.application.config.consider_all_requests_local = true
    Rails.application.config.action_dispatch.show_exceptions = false
  end

  describe 'GET #not_found' do
    it 'responds with 404 page' do
      @controller = UsersController.new
      user = create(:user)

      get :show, id: user.to_param.next

      expect(response).to have_http_status(404)
    end
  end
end

# now if you see the test log, the error page is not getting rendered. 

Processing by UsersController#show as HTML
  Parameters: {"id"=>"3"}
  User Load (0.5ms)  SELECT  "users".* FROM "users" WHERE "users"."deleted_at" IS NULL AND "users"."id" = $1  ORDER BY "users"."id" ASC LIMIT 1  [["id", 1]]
  User Load (0.4ms)  SELECT  "users".* FROM "users" WHERE "users"."deleted_at" IS NULL AND "users"."id" = $1 LIMIT 1  [["id", 3]]
Completed 404 Not Found in 5ms (ActiveRecord: 0.9ms)
   (0.2ms)  ROLLBACK

----

$ rspec spec/controllers/errors_controller_spec.rb
F

Failures:

  1) ErrorsController GET #not_found responds with 404 page
     Failure/Error: @user = User.find(params[:id])
     
     ActiveRecord::RecordNotFound:
       Couldn't find User with 'id'=3 [WHERE "users"."deleted_at" IS NULL]
     # ./app/controllers/users_controller.rb:25:in `show'
     # /Users/arup/.rvm/gems/ruby-2.2.2@teradial/gems/devise-3.5.2/lib/devise/test_helpers.rb:19:in `block in process'
     # /Users/arup/.rvm/gems/ruby-2.2.2@teradial/gems/devise-3.5.2/lib/devise/test_helpers.rb:72:in `catch'
     # /Users/arup/.rvm/gems/ruby-2.2.2@teradial/gems/devise-3.5.2/lib/devise/test_helpers.rb:72:in `_catch_warden'
     # /Users/arup/.rvm/gems/ruby-2.2.2@teradial/gems/devise-3.5.2/lib/devise/test_helpers.rb:19:in `process'
     # ./spec/controllers/errors_controller_spec.rb:23:in `block (3 levels) in <top (required)>'

Finished in 0.14492 seconds (files took 1.79 seconds to load)
1 example, 1 failure

Failed examples:

rspec ./spec/controllers/errors_controller_spec.rb:19 # ErrorsController GET #not_found responds with 404 page


Now, if when I hit the same non exiting route in development.rb, all works as expected :

Started GET "/users/55" for ::1 at 2015-12-20 21:06:12 +0530
Processing by UsersController#show as HTML
  Parameters: {"id"=>"55"}
  User Load (0.4ms)  SELECT  "users".* FROM "users" WHERE "users"."deleted_at" IS NULL AND "users"."id" = $1  ORDER BY "users"."id" ASC LIMIT 1  [["id", 2]]
  User Load (0.4ms)  SELECT  "users".* FROM "users" WHERE "users"."deleted_at" IS NULL AND "users"."id" = $1 LIMIT 1  [["id", 55]]
Completed 404 Not Found in 3ms (ActiveRecord: 0.8ms)

ActiveRecord::RecordNotFound (Couldn't find User with 'id'=55 [WHERE "users"."deleted_at" IS NULL]):
  app/controllers/users_controller.rb:25:in `show'


Processing by ErrorsController#not_found as HTML
  Parameters: {"id"=>"55"}
  Rendered errors/not_found.html.erb within layouts/errors (0.0ms)
Completed 404 Not Found in 141ms (Views: 141.0ms | ActiveRecord: 0.0ms)


----

What configuration I am missing from Rspec point of view ?