Add index action to rooms controller

Gemfile

@@ -21,6 +21,7 @@ gem 'uglifier', '>= 1.3.0'
 group :development, :test do
   gem 'byebug', platform: :mri
   gem 'factory_girl_rails'
+  gem 'rails-controller-testing'
   gem 'rspec-rails'
 end
 

Gemfile.lock

@@ -171,6 +171,10 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 5.0.1)
       sprockets-rails (>= 2.0.0)
+    rails-controller-testing (1.0.1)
+      actionpack (~> 5.x)
+      actionview (~> 5.x)
+      activesupport (~> 5.x)
     rails-dom-testing (2.0.2)
       activesupport (>= 4.2.0, < 6.0)
       nokogiri (~> 1.6)
@@ -311,6 +315,7 @@ DEPENDENCIES
   pg (~> 0.18)
   puma (~> 3.0)
   rails (~> 5.0.1)
+  rails-controller-testing
   rainbow (>= 2.1.0, < 2.2.0)
   reek
   rspec-rails

app/controllers/rooms_controller.rb

@@ -1,7 +1,9 @@
 class RoomsController < ApplicationController
   before_action :authenticate_user!
 
-  def index; end
+  def index
+    @rooms = Room.includes(:users).all
+  end
 
   def new
     @room = Room.new

app/views/pages/user_has_no_room.html.slim

@@ -1,3 +1,5 @@
 h1 Welcome to room538
-
-= link_to 'Create new room', new_room_path
+p
+  = link_to 'Create new room', new_room_path
+p
+  = link_to 'All rooms', rooms_path

app/views/rooms/_room.html.slim

@@ -0,0 +1,4 @@
+.room
+  h3 = room.name
+  - room.users.each do |user|
+    p = user.name

app/views/rooms/index.html.slim

@@ -1,2 +1,2 @@
-h1 Rooms#index
-p Find me in app/views/rooms/index.html.slim
+h1 All rooms
+= render @rooms

spec/controllers/rooms_controller_spec.rb

@@ -0,0 +1,22 @@
+RSpec.describe RoomsController, type: :controller do
+  include Devise::Test::ControllerHelpers
+
+  context 'when user signed in' do
+    let(:user) { create(:user) }
+    before(:each) do
+      sign_in user
+    end
+
+    describe 'GET #index' do
+      it 'returns http success' do
+        create_list(:room, 5, users: create_list(:user, 4))
+
+        get :index
+
+        expect(response).to have_http_status(:success)
+        expect(response).to render_template(:index)
+        expect(assigns(:rooms).length).to eq 5
+      end
+    end
+  end
+end

spec/factories/rooms.rb

@@ -1,5 +1,5 @@
 FactoryGirl.define do
   factory :room do
-    name { Faker::Hipster.sentence(2) }
+    name { Faker::Hipster.word }
   end
 end

spec/features/rooms_spec.rb

@@ -1,14 +1,30 @@
 RSpec.feature 'Rooms' do
   let(:user) { create(:user) }
 
-  scenario 'User creates new room' do
+  background do
     sign_in user
     visit root_path
+  end
+
+  scenario 'User creates new room' do
     click_link 'Create new room'
 
     fill_in 'Name', with: 'My room'
     click_on 'Create room'
 
     expect(page).to have_content 'You successfully created new room "My room"'
   end
+
+  scenario 'User looks at all rooms' do
+    rooms = create_list(:room, 3, users: create_list(:user, 3))
+
+    click_link 'All rooms'
+
+    rooms.each do |room|
+      expect(page).to have_content room.name
+      room.users.each do |user|
+        expect(page).to have_content user.name
+      end
+    end
+  end
 end