Create new diary entry records instead of cloning the fixture

Cloning fixtures doesn't seem to do a deep copy in rails 3.1 so the
attribute changes persist into other future cloned copies of the same
fixture. The fix is to create completely new records for each test.

test/unit/diary_entry_test.rb

@@ -25,9 +25,8 @@ class DiaryEntryTest < ActiveSupport::TestCase
   end
   
   def diary_entry_valid(attrs, result = true)
-    entry = diary_entries(:normal_user_entry_1).clone
+    entry = DiaryEntry.new(diary_entries(:normal_user_entry_1).attributes)
     entry.attributes = attrs
     assert_equal result, entry.valid?, "Expected #{attrs.inspect} to be #{result}"
-  end
-  
+  end  
 end