games_controller_spec.rb

require 'spec_helper'

describe GamesController do

  describe 'GET#index' do
      before do
        @fake_games = [ double('game1'), double('game2'), double('game3') ]
      end
      it 'gets all games' do
        Game.should_receive(:all).and_return(@fake_games)
        expect(@fake_games.count).to eq(3)
        get :index
      end
      it 'assigns all games for rendering' do
        Game.stub(:all).and_return(@fake_games)
        get :index
        expect(assigns :games).to eq(@fake_games)
      end
      it 'responds successfully' do
        expect(response).to be_success
      end
      it 'renders the All Games template' do
        Game.stub(:all).and_return(@fake_games)
        get :index
        expect(response).to render_template :index
      end
  end

  describe 'GET#new' do
      it 'builds a new game to provide initial values to @game' do
        @fake_game = FactoryGirl.build(:game)
        get :new
        @fake_game.title.should eq('A Fake Title')
      end
      it 'makes new game available to New Game template' do
        @fake_game = double('fake_game')
        Game.stub(:new).and_return(@fake_game)
        get :new
        expect(assigns :games).to eq(@fake_game)
      end
      it 'responds successfully' do
        expect(response).to be_success
      end
      it 'renders the New Game template' do
        get :new
        expect(response).to render_template :new
      end
    end

  describe 'GET#show' do
    before do
      @fake_game = FactoryGirl.create(:game)
      get :show, id: @fake_game.id
    end
      it 'finds game by id' do
        Game.stub find: @fake_game
        get :show, id: @fake_game
        expect(Game).to have_received(:find).with(@fake_game.id.to_s)
      end
      it 'assigns the requested game to @game' do
        expect(assigns :game).to eq(@fake_game)
      end
      it 'responds successfully' do
        expect(response).to be_success
      end
      it 'renders the #show view' do
        expect(response).to render_template :show
      end
  end

  describe 'GET#edit' do
      before do
        @fake_game = FactoryGirl.create(:game)
        get :edit, id: @fake_game.id
      end
        it 'finds game by id' do
          Game.stub find: @fake_game
          get :edit, id: @fake_game
          expect(Game).to have_received(:find).with(@fake_game.id.to_s)
        end
        it 'assigns the requested game to @game' do
          expect(assigns :game).to eq(@fake_game)
        end
        it 'responds successfully' do
          expect(response).to be_success
        end
        it 'renders the #edit view' do
          expect(response).to render_template :edit
        end
    end

  describe 'POST#create' do
    context 'POST#create game saves successfully' do
      it 'creates a new game' do
        @fake_game = mock_model(Game, :save => true)
        Game.stub(:create).and_return(@fake_game)  #explicit return syntax. Compare to 'POST#create game fails to save'
        post :create, :game => { :title => 'History of the Game Part 1' }
      end
      it 'sets a flash[:notice] message' do
        Game.stub(:create).and_return(FactoryGirl.build(:game))
        post :create, :game => { :title => 'History of the Game Part 1' }
        expect(flash[:notice]).not_to be_empty
        end
      it 'sets correct flash[:notice] message' do
        @fake_game = FactoryGirl.build(:game)
        Game.stub(:create).and_return(@fake_game)
        post :create, :game => { :title => @fake_game.title }
        expect(flash[:notice]).to eq("#{@fake_game.title} was successfully created.")
      end
      it 'redirects to the page of newly created game' do
        post :create, game: FactoryGirl.attributes_for(:game)
        expect(response).to redirect_to Game.last
      end
      it 'makes newly created game available to game template' do
        @fake_game = FactoryGirl.build(:game)
        Game.stub(:create).and_return(@fake_game)
        post :create, :game => @fake_game.attributes
        expect(assigns :game).to eq(@fake_game)
      end
    end

    context 'POST#create game fails to save' do
      it 'does not create a game' do
        @fake_game = mock_model(Game, :save => false)
        Game.stub(:create) {@fake_game} #returns @fake_game, different syntax. Compare to 'POST#create game saves successfully'
        post :create, :game => { :title => 'History of the Game Part 1' }
      end
      it 'makes the attempted created game available to game template' do
        expect(assigns :game).to eq(@fake_game)
        end
      it 'renders the #new template' do
        @fake_game = mock_model(Game, :save => false)
        Game.stub(:create) {@fake_game}
        post :create, :game => { :title => 'History of the Game Part 1' }
        expect(response).to render_template :new
      end
      end
    end

  describe 'PUT#update' do
    before :each do
      @game = FactoryGirl.create(:game )
    end
    context 'PUT#update game updates successfully' do
      it 'locates the requested @game' do
       # @game = Game.stub(:update).and_return(:game => FactoryGirl.attributes_for(:game))
        put :update, :id => @game.id, :game => FactoryGirl.attributes_for(:game)
        expect(assigns :game).to eq(@game)
      end
      it 'changes @games attributes' do
        put :update, :id => @game.id, game: FactoryGirl.attributes_for(:game, :title => 'Of Arabia', :description => 'Larry in the Desert', :minimum_players => 2, :maximum_players => 4 )
        @game.reload
        @game.title.should eq('Of Arabia')
        @game.description.should eq('Larry in the Desert')
        @game.minimum_players.should eq(2)
        @game.maximum_players.should eq(4)
      end
      it 'redirects to the updated game' do
        put :update, id: @game.id, game: FactoryGirl.attributes_for(:game)
        expect(response).to redirect_to :game
      end
    end

    context 'PUT#update game does not successfully update due to invalid attributes' do
      it 'locates the requested @game' do
        put :update, :id => @game.id, game: FactoryGirl.attributes_for(:game)
        expect(assigns :game).to eq(@game)
      end
      it 'does not change @game attributes' do
        put :update, :id => @game.id, game: FactoryGirl.attributes_for(:game, :title => nil, :description => "Larry in the Desert", :minimum_players => 2, :maximum_players => 2 )
        @game.reload
        @game.description.should_not eq("Larry in the Desert")
        @game.minimum_players.should_not eq("2")
        @game.maximum_players.should_not eq("2")
      end
      it 're-renders the edit page' do
        put :update, :id => @game.id, game: FactoryGirl.attributes_for(:game, :title => nil, :description => "Larry in the Desert", :minimum_players => 2, :maximum_players => 2 )
        expect(response).to render_template :edit
      end
    end
  end

  describe 'PATCH#update' do
      before :each do
        @game = FactoryGirl.create(:game )
      end
      context 'PATCH#update game updates successfully' do
        it 'locates the requested @game' do
          patch :update, :id => @game.id, :game => FactoryGirl.attributes_for(:game)
          expect(assigns :game).to eq(@game)
        end
        it 'changes @games attributes' do
          patch :update, :id => @game.id, game: FactoryGirl.attributes_for(:game, :title => 'Of Arabia', :description => 'Larry in the Desert', :minimum_players => 2, :maximum_players => 4 )
          @game.reload
          @game.title.should eq('Of Arabia')
          @game.description.should eq('Larry in the Desert')
          @game.minimum_players.should eq(2)
          @game.maximum_players.should eq(4)
        end
        it 'redirects to the updated game' do
          patch :update, id: @game.id, game: FactoryGirl.attributes_for(:game)
          expect(response).to redirect_to :game
        end
      end

      context 'PATCH#update game does not successfully update due to invalid attributes' do
        it 'locates the requested @game' do
          patch :update, :id => @game.id, game: FactoryGirl.attributes_for(:game)
          expect(assigns :game).to eq(@game)
        end
        it 'does not change @game attributes' do
          patch :update, :id => @game.id, game: FactoryGirl.attributes_for(:game, :title => nil, :description => "Larry in the Desert", :minimum_players => 2, :maximum_players => 2 )
          @game.reload
          @game.description.should_not eq("Larry in the Desert")
          @game.minimum_players.should_not eq("2")
          @game.maximum_players.should_not eq("2")
        end
        it 're-renders the edit page' do
          patch :update, :id => @game.id, game: FactoryGirl.attributes_for(:game, :title => nil, :description => "Larry in the Desert", :minimum_players => 2, :maximum_players => 2 )
          expect(response).to render_template :edit
        end
      end
    end

  describe 'DELETE#destroy' do
    before do
      @fake_game = FactoryGirl.create(:game)
    end
      it 'finds the game by id' do
        Game.stub find: @fake_game
        delete :destroy, id: @fake_game
        expect(Game).to have_received(:find).with(@fake_game.id.to_s)
      end
      it 'calls #destroy on the game' do
        Game.stub find: @fake_game
        @fake_game.stub destroy: true
        delete :destroy, id: @fake_game
        expect(@fake_game).to have_received(:destroy)
      end
      it "destroys the game" do
        expect{ delete :destroy, id: @fake_game }.to change(Game,:count).by(-1)
      end
      it 'redirects to All Games' do
        delete :destroy, id: @fake_game
        expect(response).to redirect_to(games_path)
      end
  end
end