こんな感じでAPIのspecを楽に書きたいんだけど

gistfile1.rb

describe_jsonapi 'GET /users/:id' do
  let(:id) { 1 }
  
  context 'when user exists' do
    before(:all) do
      User.make(:id => id)
      Article.make(:user_id => id, :article_id => 1)
    end
    after(:all) { DatabaseCleaner.clean }

    it { status_code.should be_ok }

    response_headers do
      #its(['Contnet-Type']) { should =~ %r(^application/json) }
    end

    response_body do
      its(:id) { should == 1 }
      # its('id') { should == 1 }  # also ok
      # its([:id]) { should == 1 }
      
      member :articles do
        its(:size) { should == 1 }
        element :first do
          its(:article_id) { should == 1 }
        end
      end
    end
  end

  context 'when user does not exist' do
    it { status_code.should be_not_found }
    response_headers { }

    reponse_body do
      member :errors do
        element :first do
          its(:message) { should == 'user not found' }
        end
      end
    end
  end
end

__EOF__

GET /users/:id
  when user exists
    status code should be 200 OK
    in response headers
      Content-Type should start with application/json # auto-gen by response_headers
    in response body
      member id should == 1
      member articles
        its size should == 1
        should be an array   # auto-gen by element
        .first
          article_id should == 1
  when user does not exist
    status code should be 404 Not Found
    in response headers
      Content-Type should start with application/json
    in response body
      member errors
        should be an aray
        .first
          mesage should == 'user not found'