From 792e2fccac3afc83bf46c65ceabd2b0ab7e692ab Mon Sep 17 00:00:00 2001
From: Ned Batchelder <ned@nedbatchelder.com>
Date: Fri, 26 Apr 2019 13:57:49 -0400
Subject: Old-style classes can report the test_function name. #797

---
 coverage/context.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'coverage/context.py')

diff --git a/coverage/context.py b/coverage/context.py
index 22c0e531..13800337 100644
--- a/coverage/context.py
+++ b/coverage/context.py
@@ -65,7 +65,7 @@ def qualname_from_frame(frame):
     if hasattr(func, '__qualname__'):
         qname = func.__qualname__
     else:
-        for cls in self.__class__.__mro__:
+        for cls in getattr(self.__class__, '__mro__', ()):
             f = cls.__dict__.get(fname, None)
             if f is None:
                 continue
-- 
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