Resolve issue 4449: AssertionError in mp_benchmarks.py
diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
index b0746e9..2daff7e 100644
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -829,10 +829,16 @@
         obj3 = val3.get_obj()
         self.assertEqual(lock, lock3)
 
-        arr4 = self.RawValue('i', 5)
+        arr4 = self.Value('i', 5, lock=False)
         self.assertFalse(hasattr(arr4, 'get_lock'))
         self.assertFalse(hasattr(arr4, 'get_obj'))
 
+        self.assertRaises(AttributeError, self.Value, 'i', 5, lock='navalue')
+
+        arr5 = self.RawValue('i', 5)
+        self.assertFalse(hasattr(arr5, 'get_lock'))
+        self.assertFalse(hasattr(arr5, 'get_obj'))
+
 
 class _TestArray(BaseTestCase):
 
@@ -887,9 +893,15 @@
         obj3 = arr3.get_obj()
         self.assertEqual(lock, lock3)
 
-        arr4 = self.RawArray('i', range(10))
+        arr4 = self.Array('i', range(10), lock=False)
         self.assertFalse(hasattr(arr4, 'get_lock'))
         self.assertFalse(hasattr(arr4, 'get_obj'))
+        self.assertRaises(AttributeError,
+                          self.Array, 'i', range(10), lock='notalock')
+
+        arr5 = self.RawArray('i', range(10))
+        self.assertFalse(hasattr(arr5, 'get_lock'))
+        self.assertFalse(hasattr(arr5, 'get_obj'))
 
 #
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