[fix] metaclass conflict for class_deprecated

Actually the old compatibility code actually prevented this bug so back it up.

1 files changed, 11 insertions, 0 deletions

diff --git a/test/test_deprecation.py b/test/test_deprecation.py
index 78b2256..65ef8fd 100644
--- a/test/test_deprecation.py
+++ b/test/test_deprecation.py
@@ -63,6 +63,17 @@ class RawInputTC(TestCase):
             self.messages, ["[test_deprecation] OldClass is deprecated, use AnyClass instead"]
         )
 
+    def test_class_renamed_conflict_metaclass(self):
+        class SomeMetaClass(type):
+            pass
+
+        class AnyClass(metaclass=SomeMetaClass):
+            pass
+
+        # make sure the "metaclass conflict: the metaclass of a derived class # must be a
+        # (non-strict) subclass of the metaclasses of all its bases" exception won't be raised
+        deprecation.class_renamed("OldClass", AnyClass)
+
     def test_class_moved(self):
         class AnyClass(object):
             pass