raise a clear TypeError when trying to register a non-class
diff --git a/Lib/test/test_abc.py b/Lib/test/test_abc.py
index 529f3e6..31f1986 100644
--- a/Lib/test/test_abc.py
+++ b/Lib/test/test_abc.py
@@ -149,6 +149,12 @@
self.assertRaises(RuntimeError, C.register, A) # cycles not allowed
C.register(B) # ok
+ def test_register_non_class(self):
+ class A(object):
+ __metaclass__ = abc.ABCMeta
+ self.assertRaisesRegexp(TypeError, "Can only register classes",
+ A.register, 4)
+
def test_registration_transitiveness(self):
class A:
__metaclass__ = abc.ABCMeta