Retrieve only once example

only_retrieve_once_example.rb

RSpec.describe 'example' do
  kinds.each do |kind|
    context kind.to_s, vcr: true do
      let(:helper) do
        helper = HTTP.get("http://#{kind}.com/")
        helper
      end
      
      # retrieves here
      it "ok?" do
        expect(helper.code).to eq 200
      end
      
      # re-retrieves here
      it 'has_items' do
         expect(helper.items.length).to be > 0
      end
    end
  end
end