fix comment helper specs

spec/helpers/comments_helper_spec.rb

@@ -22,21 +22,36 @@ describe CommentsHelper do
   end
 
   describe 'commenting_disabled?' do
+    include Devise::TestHelpers
+    before do
+      sign_in alice
+      def user_signed_in? 
+        true
+      end
+    end
+
+    it 'returns true if no user is signed in' do
+      def user_signed_in? 
+        false 
+      end
+      commenting_disabled?(stub).should == true
+    end
+
     it 'returns true if @commenting_disabled is set' do
       @commenting_disabled = true
-      commenting_disabled?(stub).should_be true
+      commenting_disabled?(stub).should == true
       @commenting_disabled = false
-      commenting_disabled?(stub).should_be false 
+      commenting_disabled?(stub).should == false 
     end
 
     it 'returns @stream.can_comment? if @stream is set' do
       post = stub
       @stream = stub
       @stream.should_receive(:can_comment?).with(post).and_return(true)
-      commenting_disabled?(post).should_be true
+      commenting_disabled?(post).should == false
 
       @stream.should_receive(:can_comment?).with(post).and_return(false)
-      commenting_disabled?(post).should_be false 
+      commenting_disabled?(post).should == true
     end
   end
 end