Port tests from Issue #15219, and verify we don't have a reference leak.

diff --git a/Lib/test/test_hashlib.py b/Lib/test/test_hashlib.py
index ce8175a505fbd2784db148f180cfc78fc731e0fc..d2ef9d1f3fe811a53291c75ba993f2702f6de01a 100644 (file)
--- a/Lib/test/test_hashlib.py
+++ b/Lib/test/test_hashlib.py
@@ -113,12 +113,8 @@ class HashLibTestCase(unittest.TestCase):
                             issubset(hashlib.algorithms_available))
 
     def test_unknown_hash(self):
-        try:
-            hashlib.new('spam spam spam spam spam')
-        except ValueError:
-            pass
-        else:
-            self.assertTrue(0 == "hashlib didn't reject bogus hash name")
+        self.assertRaises(ValueError, hashlib.new, 'spam spam spam spam spam')
+        self.assertRaises(TypeError, hashlib.new, 1)
 
     def test_get_builtin_constructor(self):
         get_builtin_constructor = hashlib.__dict__[