1 files changed, 6 insertions, 15 deletions
diff --git a/Lib/test/test_isinstance.py b/Lib/test/test_isinstance.py
index 7a6730e..e63d59b 100644
--- a/Lib/test/test_isinstance.py
+++ b/Lib/test/test_isinstance.py
@@ -3,7 +3,6 @@
 # testing of error conditions uncovered when using extension types.
 
 import unittest
-from test import support
 import sys
 
 
@@ -259,31 +258,23 @@ class TestIsInstanceIsSubclass(unittest.TestCase):
         self.assertEqual(True, issubclass(str, (str, (Child, NewChild, str))))
 
     def test_subclass_recursion_limit(self):
-        # make sure that issubclass raises RuntimeError before the C stack is
+        # make sure that issubclass raises RecursionError before the C stack is
         # blown
-        self.assertRaises(RuntimeError, blowstack, issubclass, str, str)
+        self.assertRaises(RecursionError, blowstack, issubclass, str, str)
 
     def test_isinstance_recursion_limit(self):
-        # make sure that issubclass raises RuntimeError before the C stack is
+        # make sure that issubclass raises RecursionError before the C stack is
         # blown
-        self.assertRaises(RuntimeError, blowstack, isinstance, '', str)
+        self.assertRaises(RecursionError, blowstack, isinstance, '', str)
 
 def blowstack(fxn, arg, compare_to):
     # Make sure that calling isinstance with a deeply nested tuple for its
-    # argument will raise RuntimeError eventually.
+    # argument will raise RecursionError eventually.
     tuple_arg = (compare_to,)
     for cnt in range(sys.getrecursionlimit()+5):
         tuple_arg = (tuple_arg,)
         fxn(arg, tuple_arg)
 
 
-def test_main():
-    support.run_unittest(
-        TestIsInstanceExceptions,
-        TestIsSubclassExceptions,
-        TestIsInstanceIsSubclass
-    )
-
-
 if __name__ == '__main__':
-    test_main()
+    unittest.main()