1 files changed, 13 insertions, 0 deletions
diff --git a/Lib/unittest/test/test_suite.py b/Lib/unittest/test/test_suite.py
index 465ba75..ab2e16e 100644
--- a/Lib/unittest/test/test_suite.py
+++ b/Lib/unittest/test/test_suite.py
@@ -289,3 +289,16 @@ class Test_TestSuite(unittest.TestCase, TestEquality):
     def test_addTests__string(self):
         suite = unittest.TestSuite()
         self.assertRaises(TypeError, suite.addTests, "foo")
+
+    def test_function_in_suite(self):
+        def f(_):
+            pass
+        suite = unittest.TestSuite()
+        suite.addTest(f)
+
+        # when the bug is fixed this line will not crash
+        suite.run(unittest.TestResult())
+
+
+if __name__ == '__main__':
+    unittest.main()