Fixed #6611 -- When copying a SortedDict, make a new copy of the keys list.

Thanks, Jeremy Dunck.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7129 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/utils/datastructures.py

@@ -145,7 +145,7 @@ class SortedDict(dict):
         """Returns a copy of this object."""
         # This way of initializing the copy means it works for subclasses, too.
         obj = self.__class__(self)
-        obj.keyOrder = self.keyOrder
+        obj.keyOrder = self.keyOrder[:]
         return obj
 
     def __repr__(self):

tests/regressiontests/datastructures/tests.py

@@ -77,6 +77,8 @@ MultiValueDictKeyError: "Key 'lastname' not found in <MultiValueDict: {'position
 'not one'
 >>> d.keys() == d.copy().keys()
 True
+>>> d2 = d.copy()
+>>> d2['four'] = 'four'
 >>> print repr(d)
 {'one': 'not one', 'two': 'two', 'three': 'three'}
 >>> d.pop('one', 'missing')