Fix issue 1747: allow classic classes to be checked for being subclasses of
ABCs.
diff --git a/Lib/test/test_abc.py b/Lib/test/test_abc.py
index c760356..272f61d 100644
--- a/Lib/test/test_abc.py
+++ b/Lib/test/test_abc.py
@@ -8,7 +8,6 @@
from test import test_support
import abc
-__metaclass__ = type
class TestABC(unittest.TestCase):
@@ -59,10 +58,18 @@
self.assertEqual(F.__abstractmethods__, set(["bar"]))
self.assertRaises(TypeError, F) # because bar is abstract now
+ def test_subclass_oldstyle_class(self):
+ class A:
+ __metaclass__ = abc.ABCMeta
+ class OldstyleClass:
+ pass
+ self.assertFalse(issubclass(OldstyleClass, A))
+ self.assertFalse(issubclass(A, OldstyleClass))
+
def test_registration_basics(self):
class A:
__metaclass__ = abc.ABCMeta
- class B:
+ class B(object):
pass
b = B()
self.assertEqual(issubclass(B, A), False)
@@ -95,7 +102,7 @@
class A1(A):
pass
self.assertRaises(RuntimeError, A1.register, A) # cycles not allowed
- class B:
+ class B(object):
pass
A1.register(B) # ok
A1.register(B) # should pass silently
@@ -136,7 +143,7 @@
def test_all_new_methods_are_called(self):
class A:
__metaclass__ = abc.ABCMeta
- class B:
+ class B(object):
counter = 0
def __new__(cls):
B.counter += 1