Closes issue #12376 : Pass on parameters in unittest.TextTestResult.__init__ super call

1 files changed, 13 insertions, 0 deletions

diff --git a/Lib/unittest/test/test_runner.py b/Lib/unittest/test/test_runner.py
index 8e95410..aed1e76 100644
--- a/Lib/unittest/test/test_runner.py
+++ b/Lib/unittest/test/test_runner.py
@@ -149,6 +149,19 @@ class Test_TextTestRunner(unittest.TestCase):
         self.assertEqual(runner.resultclass, unittest.TextTestResult)
 
 
+    def test_multiple_inheritance(self):
+        class AResult(unittest.TestResult):
+            def __init__(self, stream, descriptions, verbosity):
+                super(AResult, self).__init__(stream, descriptions, verbosity)
+
+        class ATextResult(unittest.TextTestResult, AResult):
+            pass
+
+        # This used to raise an exception due to TextTestResult not passing
+        # on arguments in its __init__ super call
+        ATextResult(None, None, 1)
+
+
     def testBufferAndFailfast(self):
         class Test(unittest.TestCase):
             def testFoo(self):