osem/spec/controllers/conferences_controller_spec.rb

require 'spec_helper'

describe Admin::ConferenceController do

  # It is necessary to use bang version of let to build roles before user
  let!(:organizer_role) { create(:organizer_role) }
  let!(:participant_role) { create(:participant_role) }
  let!(:admin_role) { create(:admin_role) }

  let(:conference) { create(:conference) }
  let(:admin) { create(:admin) }
  let(:organizer) { create(:organizer) }
  let(:participant) { create(:participant) }

  shared_examples 'access as administration or organizer' do
    describe 'PATCH #update' do
      context 'valid attributes' do
        it 'locates the requested conference' do
          patch :update, id: conference.short_title, conference:
              attributes_for(:conference, title: 'Example Con')

          expect(assigns(:conference)).to eq(conference)
        end

        it 'changes conference attributes' do
          patch :update, id: conference.short_title, conference:
              attributes_for(:conference, title: 'Example Con',
                             short_title: 'ExCon')

          conference.reload
          expect(conference.title).to eq('Example Con')
          expect(conference.short_title).to eq('ExCon')
        end

        it 'redirects to the updated conference' do
          patch :update, id: conference.short_title, conference:
              attributes_for(:conference, title: 'Example Con')
              conference.reload
          expect(response).to redirect_to admin_conference_path(
                                              conference.short_title)
        end
      end

      context 'invalid attributes' do
        it 'does not change conference attributes' do
          patch :update, id: conference.short_title, conference:
              attributes_for(:conference, title: 'Example Con',
                             short_title: nil)

          conference.reload
          expect(flash[:alert]).
              to eq("Updating conference failed. Short title can't be blank.")
          expect(conference.title).to eq('The dog and pony show')
          expect(conference.short_title).to eq("#{conference.short_title}")
        end

        it 're-renders the #show template' do
          patch :update, id: conference.short_title, conference:
              attributes_for(:conference, title: 'Example Con',
                             short_title: nil)

          expect(flash[:alert]).
              to eq("Updating conference failed. Short title can't be blank.")
          expect(response).to redirect_to admin_conference_path(
                                              conference.short_title)
        end
      end
    end

    describe 'POST #create' do
      context 'with valid attributes' do
        it 'saves the conference to the database' do
          expected = expect do
            post :create, conference:
                attributes_for(:conference, short_title: 'dps15')
          end
          expected.to change { Conference.count }.by 1
        end

        it 'redirects to conference#show' do
          post :create, conference:
              attributes_for(:conference, short_title: 'dps15')

          expect(response).to redirect_to admin_conference_path(
                                              assigns[:conference].short_title)
        end
      end

      context 'with invalid attributes' do
        it 'does not save the conference to the database' do
          expected = expect do
            post :create, conference:
                attributes_for(:conference, short_title: nil)
          end
          expected.to_not change { Conference.count }
        end

        it 're-renders the new template' do
          post :create, conference:
              attributes_for(:conference, short_title: nil)
          expect(response).to redirect_to new_admin_conference_path
        end
      end

      context 'with duplicate conference short title' do
        it 'does not save the conference to the database' do
          conference
          expected = expect do
            post :create, conference:
                attributes_for(:conference, short_title: conference.short_title)
          end
          expected.to_not change { Conference.count }
        end

        it 're-renders the new template' do
          conference
          post :create, conference: attributes_for(:conference, short_title: conference.short_title)
          expect(response).to redirect_to new_admin_conference_path
        end
      end
    end

    describe 'GET #show' do
      it 'assigns the requested conference to conference' do
        get :show, id: conference.short_title
        expect(assigns(:conference)).to eq conference
      end

      it 'renders the show template' do
        get :show, id: conference.short_title
        expect(response).to render_template :show
      end
    end

    describe 'GET #index' do
      context 'with more than 0 conferences' do
        it 'populates an array with conferences' do
          con2 = create(:conference)
          get :index
          expect(assigns(:conferences)).to match_array([conference, con2])
        end

        it 'renders the index template' do
          conference
          get :index
          expect(response).to render_template :index
        end
      end

      context 'no conferences' do
        it 'redirect to new conference' do
          get :index
          expect(response).to redirect_to(redirect_to new_admin_conference_path)
        end
      end
    end

    describe 'GET #new' do
      it 'assigns a new conference to conference' do
        get :new
        expect(assigns(:conference)).to be_a_new(Conference)
      end

      it 'renders the :new template' do
        get :new
        expect(response).to render_template :new
      end
    end
  end

  describe 'administrator access' do

    before(:each) do
      sign_in(admin)
    end

    it_behaves_like 'access as administration or organizer'

  end

  describe 'organizer access' do

    before(:each) do
      sign_in(organizer)
    end

    it_behaves_like 'access as administration or organizer'

  end

  shared_examples 'access as participant or guest' do |success_path|
    describe 'GET #show' do
      it 'requires admin privileges' do
        get :show, id: conference.short_title
        expect(response).to redirect_to(send(success_path))
      end
    end

    describe 'GET #index' do
      it 'requires admin privileges' do
        get :index
        expect(response).to redirect_to(send(success_path))
      end
    end

    describe 'GET #new' do
      it 'requires admin privileges' do
        get :new
        expect(response).to redirect_to(send(success_path))
      end
    end

    describe 'POST #create' do
      it 'requires admin privileges' do
        post :create, conference: attributes_for(:conference,
                                                 short_title: 'ExCon')
        expect(response).to redirect_to(send(success_path))
      end
    end

    describe 'PATCH #update' do
      it 'requires admin privileges' do
        patch :update, id: conference.short_title,
              conference: attributes_for(:conference,
                                         short_title: 'ExCon')
        expect(response).to redirect_to(send(success_path))
      end
    end
  end

  describe 'participant access' do
    before(:each) do
      sign_in(participant)
    end

    it_behaves_like 'access as participant or guest', :root_path

  end

  describe 'guest access' do

    it_behaves_like 'access as participant or guest', :new_user_session_path

  end
end