new_test_desing_pattern.rb

RSpec.describe PagesController, type: :controller do

  describe '#destroy' do
    context 'when invalid scenario' do
      context 'and resource is not found' do
        # setup...
        let() {...}
        let() {...}
        let() {...}
        subject {}

        # exercise....
        before do
        end

        it '...' do
          # verify.....
          expect(suject).to ....
        end

        it '...' do
          # verify.....
          expect(suject).to ....
        end

        # teardown....
        after do
          ...
        end

      end

    end

    context 'when valid scenario' do

      context 'and resource is found' do
        it '....' do
          expect().to ....
        end

      end

    end

  end # #destroy

end