get described_class to point to the right thing

lib/rspec/core/example.rb

@@ -13,10 +13,6 @@ def description
         @metadata[:description]
       end
 
-      def described_class
-        @metadata[:describes]
-      end
-
       def record_results(results={})
         @metadata[:execution_result].update(results)
       end

lib/rspec/core/example_group.rb

@@ -209,6 +209,10 @@ def assignments
         @assignments ||= {}
       end
 
+      def described_class
+        running_example.metadata[:behaviour][:describes]
+      end
+
       def __reset__
         instance_variables.each { |ivar| remove_instance_variable(ivar) }
         assignments.clear

spec/rspec/core/example_spec.rb

@@ -43,8 +43,8 @@
   end
 
   describe '#described_class' do
-    it "is a shortcut to ...." do
-      @example.described_class.should == @example.metadata[:describes]
+    it "returns the class (if any) of the outermost example group" do
+      described_class.should == Rspec::Core::Example
     end
   end