Issue python#28735: Fixed the comparison of mock.MagickMock with mock.ANY.

Author: serhiy-storchaka

Lib/unittest/mock.py

@@ -1749,14 +1749,18 @@ def __eq__(other):
         ret_val = self.__eq__._mock_return_value
         if ret_val is not DEFAULT:
             return ret_val
-        return self is other
+        if self is other:
+            return True
+        return NotImplemented
     return __eq__
 
 def _get_ne(self):
     def __ne__(other):
         if self.__ne__._mock_return_value is not DEFAULT:
             return DEFAULT
-        return self is not other
+        if self is other:
+            return False
+        return NotImplemented
     return __ne__
 
 def _get_iter(self):

Lib/unittest/test/testmock/testmock.py

@@ -306,13 +306,24 @@ def test_call_args_comparison(self):
 
 
     def test_calls_equal_with_any(self):
-        call1 = mock.call(mock.MagicMock())
-        call2 = mock.call(mock.ANY)
-
         # Check that equality and non-equality is consistent even when
         # comparing with mock.ANY
+        mm = mock.MagicMock()
+        self.assertTrue(mm == mm)
+        self.assertFalse(mm != mm)
+        self.assertFalse(mm == mock.MagicMock())
+        self.assertTrue(mm != mock.MagicMock())
+        self.assertTrue(mm == mock.ANY)
+        self.assertFalse(mm != mock.ANY)
+        self.assertTrue(mock.ANY == mm)
+        self.assertFalse(mock.ANY != mm)
+
+        call1 = mock.call(mock.MagicMock())
+        call2 = mock.call(mock.ANY)
         self.assertTrue(call1 == call2)
         self.assertFalse(call1 != call2)
+        self.assertTrue(call2 == call1)
+        self.assertFalse(call2 != call1)
 
 
     def test_assert_called_with(self):

Misc/NEWS

@@ -13,6 +13,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #28735: Fixed the comparison of mock.MagickMock with mock.ANY.
+
 - Issue #29011:  Fix an important omission by adding Deque to the typing module.
 
 - Issue #29219: Fixed infinite recursion in the repr of uninitialized