shared_example_spec.rb

context 'role: user' do

  let(:user1) { FactoryGirl.create(:user) }
  let(:user2) { FactoryGirl.create(:user) }
  let(:admin_user) { FactoryGirl.create(:admin) }

  shared_example :ok do
    it 'allows access' do
      expect { visit path }.to_not raise_error(CanCan::AccessDenied)
    end
  end
  shared_example :fail do
    it 'allows access' do
      expect { visit path }.to_not raise_error(CanCan::AccessDenied)
    end
  end

  before do
    login(current_user)
  end

  context 'time_sheet_path of user1' do
    let(:path) { time_sheet_path(user.current_time_sheet) }

    context 'the user itself' do
      let(:current_user) { user1 }

      include_examples :ok
    end

    context 'other user' do
      let(:current_user) { user2 }

      include_examples :fail
    end

    context 'as admin user' do
      let(:current_user) { admin_user }
      include_examples :ok
    end
  end


end