Issue #13577: various kinds of descriptors now have a __qualname__ attribute.

Patch by sbt.

1 files changed, 18 insertions, 0 deletions

diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 4a7a9d2..2b2026c 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -4442,6 +4442,24 @@ order (MRO) for bases """
         self.assertIn("can't delete X.__doc__", str(cm.exception))
         self.assertEqual(X.__doc__, "banana")
 
+    def test_qualname(self):
+        descriptors = [str.lower, complex.real, float.real, int.__add__]
+        types = ['method', 'member', 'getset', 'wrapper']
+
+        # make sure we have an example of each type of descriptor
+        for d, n in zip(descriptors, types):
+            self.assertEqual(type(d).__name__, n + '_descriptor')
+
+        for d in descriptors:
+            qualname = d.__objclass__.__qualname__ + '.' + d.__name__
+            self.assertEqual(d.__qualname__, qualname)
+
+        self.assertEqual(str.lower.__qualname__, 'str.lower')
+        self.assertEqual(complex.real.__qualname__, 'complex.real')
+        self.assertEqual(float.real.__qualname__, 'float.real')
+        self.assertEqual(int.__add__.__qualname__, 'int.__add__')
+
+
 class DictProxyTests(unittest.TestCase):
     def setUp(self):
         class C(object):