answering to link names

lib/restfulie/client/http/marshal.rb

@@ -3,6 +3,17 @@ module Restfulie::Client::HTTP
 
   module ResponseHolder
     attr_accessor :response
+
+    def respond_to?(symbol)
+      respond_to_rel?(symbol.to_s) || super(symbol)
+    end
+
+    private
+    # whether this response contains specific relations
+    def respond_to_rel?(rel)
+      links.any? { |link| link.rel==rel }
+    end
+
   end
 
   module RequestMarshaller

spec/units/client/http/marshal_spec.rb

@@ -17,5 +17,27 @@
     raw_response.response.code.should == 200
     raw_response.response.body.should == response_data( 'atoms', 'songs' )
   end 
+
+  class Link
+    attr_reader :rel
+    def initialize(rel)
+      @rel = rel
+    end
+  end
+  class Linked
+    attr_reader :links
+    def initialize(links)
+      @links = []
+      links.each do |l|
+        @links << Link.new(l)
+      end
+    end
+  end
+  it 'respond whether a resource contains a rel link' do
+    result = Linked.new(["first", "payment"])
+    result.extend Restfulie::Client::HTTP::ResponseHolder
+    result.respond_to?("search").should be_false
+    result.respond_to?("payment").should be_true
+  end
 
 end