Rails4 Rspec Controller Tests No route matches

Question

All. I am a beginner developer of Ruby on Rails. There is an error that I have been struggling and not been able to solve.

I am trying to see if an variable @chat_group declared in messages_controller.rb matches another variable declared in message_controller_spec.rb . I have not had any clue to solve this error because I am 100% positive that I am giving what I am supposed to give to as a parameter, which is chat_group_id as the route says.

Does anyone have any insight to solve this problem? Or has anyone encountered a similar issue before?

If you does or has, could you please give a way of solving this problem? Any advice would be appreciated! Thanks in advnace!

1) MessagesController#GET index when the user logs in Checking if the variable in index action matches
 Failure/Error: get :index, params: index_params
 ActionController::UrlGenerationError:
   No route matches {:action=>"index", :controller=>"messages", :params=>{:chat_group_id=>"522"}}
 # ./spec/controllers/messages_controller_spec.rb:13:in `block (4 levels) in <top (required)>'

messages_controller_spec.rb

RSpec.describe MessagesController, type: :controller do
  let(:chat_group)    { create(:chat_group) }
  let(:message)       { create(:message) }
  let(:index_params)  { { chat_group_id: chat_group } }

  describe '#GET index' do
    context 'when the user logs in' do
      login_user
      it 'Checking if the variable in index action matches' do
        get :index, params: index_params
        expect(assigns(:chat_group)).to eq chat_group
      end
    end
  end
end

Route.rb

   chat_group_messages GET    /chat_groups/:chat_group_id/messages(.:format) messages#index
                     POST   /chat_groups/:chat_group_id/messages(.:format) messages#create
         chat_groups GET    /chat_groups(.:format)                         chat_groups#index
                     POST   /chat_groups(.:format)                         chat_groups#create
      new_chat_group GET    /chat_groups/new(.:format)                     chat_groups#new
     edit_chat_group GET    /chat_groups/:id/edit(.:format)                chat_groups#edit
          chat_group PATCH  /chat_groups/:id(.:format)                     chat_groups#update
                     PUT    /chat_groups/:id(.:format)                     chat_groups#update

MessageController.rb

class MessagesController < ApplicationController
  before_action :set_chat_group

  def index
   @chat_groups = current_user.chat_groups
   @messages = @chat_group.messages
   @message = Message.new

   respond_to do |format|
      format.html { render :index }
      format.json { render json: 
       @chat_group.messages.includes(:user).map{|x| x.json_api} }
     end
   end

  private
  def set_chat_group
    @chat_group = ChatGroup.find(params[:chat_group_id])
  end
end

Update

I solved the error! I put the way of solving it in the comments below!

Answer 1

I am so sorry. I was looking at a documentation for Rails5 instead of Rails4.

It says that I should pass the chat_group_id by writing like below.

Rails4

before do
  get :index, { chat_group_id: chat_group }
end

Not Like this

before do
  get :index, params: { chat_group_id: chat_group }
end 

This error made me realize how important it is to read the documentation... For those who put comments and tried to do so, THANK YOU VERY MUCH!

Answer 2

try to change type: controller to type: request ?

Also you can use, request type and specify path:

get chat_group_messages_path(chat_group.id), index_params

Cheers

Answer 3

I think You are doing everything right.

but this line : expect(assigns(:group)).to eq group

you expected assigns(:group) but i can't see any variable named group in your index action that you are testing.

also you are expecting that to equal group " eq group ", but in your let blocks in the example above no variable named group exists.

So try to do expect(assigns(:chat_groups)).to eq chat_group

the assigns(:chat_groups) uses the same name of the instance variable inside your action, and the eq chat_group uses the name of the variable in the let block