fix py3x tests

persistent/tests/test_persistence.py

@@ -985,14 +985,14 @@ class _Persistent_Base(object):
             key2 = list(inst2.__dict__.keys())[0]
             self.assertTrue(key1 is key2)
 
-            import UserDict
+            from persistent._compat import IterableUserDict
             inst1 = Derived()
             inst2 = Derived()
             key1 = 'key'
             key2 = 'ke'; key2 += 'y'  # construct in a way that won't intern the literal
             self.assertFalse(key1 is key2)
-            state1 = UserDict.IterableUserDict({key1: 1})
-            state2 = UserDict.IterableUserDict({key2: 2})
+            state1 = IterableUserDict({key1: 1})
+            state2 = IterableUserDict({key2: 2})
             k1 = list(state1.keys())[0]
             k2 = list(state2.keys())[0]
             self.assertFalse(k1 is k2)  # verify
@@ -1002,7 +1002,6 @@ class _Persistent_Base(object):
             key2 = list(inst2.__dict__.keys())[0]
             self.assertTrue(key1 is key2)
 
-
     def test___setstate___doesnt_fail_on_non_string_keys(self):
         class Derived(self._getTargetClass()):
             pass
@@ -1021,8 +1020,8 @@ class _Persistent_Base(object):
             pass
         inst1 = Derived()
 
-        import UserDict
-        state = UserDict.IterableUserDict({'foobar': [1, 2]})
+        from persistent._compat import IterableUserDict
+        state = IterableUserDict({'foobar': [1, 2]})
 
         inst1.__setstate__(state)
         self.assertTrue(hasattr(inst1, 'foobar'))