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

2 files changed, 14 insertions, 1 deletions

diff --git a/Lib/unittest/runner.py b/Lib/unittest/runner.py
index 10c4778..28b8865 100644
--- a/Lib/unittest/runner.py
+++ b/Lib/unittest/runner.py
@@ -35,7 +35,7 @@ class TextTestResult(result.TestResult):
     separator2 = '-' * 70
 
     def __init__(self, stream, descriptions, verbosity):
-        super(TextTestResult, self).__init__()
+        super(TextTestResult, self).__init__(stream, descriptions, verbosity)
         self.stream = stream
         self.showAll = verbosity > 1
         self.dots = verbosity == 1
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):