commit f6f3a3544783496301537bc5c946b58b0e5cbac8
author Benjamin Peterson <benjamin@python.org> Sat Sep 03 09:26:20 2011 -0400
committer Benjamin Peterson <benjamin@python.org> Sat Sep 03 09:26:20 2011 -0400
tree 13390f4306978a1c0ae487218a031617f06d1e87
parent 7335e6f3e825243a5ec9e7886a98fb257bc0e920

add a __dict__ descr for IOBase (closes #12878)

Lib/test/test_io.py

diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index 72c9a2d..0dc9d6d 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -610,6 +610,17 @@
         self.assertEqual(rawio.read(2), None)
         self.assertEqual(rawio.read(2), b"")
 
+    def test_types_have_dict(self):
+        test = (
+            self.IOBase(),
+            self.RawIOBase(),
+            self.TextIOBase(),
+            self.StringIO(),
+            self.BytesIO()
+        )
+        for obj in test:
+            self.assertTrue(hasattr(obj, "__dict__"))
+
 class CIOTest(IOTest):
 
     def test_IOBase_finalize(self):