Issue #22958: Constructor and update method of weakref.WeakValueDictionary
now accept the self keyword argument.
diff --git a/Lib/test/test_weakref.py b/Lib/test/test_weakref.py
index cc0a755..b7f985c 100644
--- a/Lib/test/test_weakref.py
+++ b/Lib/test/test_weakref.py
@@ -1197,6 +1197,18 @@
             dict[o] = o.arg
         return dict, objects
 
+    def test_make_weak_valued_dict_misc(self):
+        # errors
+        self.assertRaises(TypeError, weakref.WeakValueDictionary.__init__)
+        self.assertRaises(TypeError, weakref.WeakValueDictionary, {}, {})
+        self.assertRaises(TypeError, weakref.WeakValueDictionary, (), ())
+        # special keyword arguments
+        o = Object(3)
+        for kw in 'self', 'other', 'iterable':
+            d = weakref.WeakValueDictionary(**{kw: o})
+            self.assertEqual(list(d.keys()), [kw])
+            self.assertEqual(d[kw], o)
+
     def make_weak_valued_dict(self):
         dict = weakref.WeakValueDictionary()
         objects = map(Object, range(self.COUNT))
@@ -1279,6 +1291,19 @@
     def test_weak_valued_dict_update(self):
         self.check_update(weakref.WeakValueDictionary,
                           {1: C(), 'a': C(), C(): C()})
+        # errors
+        self.assertRaises(TypeError, weakref.WeakValueDictionary.update)
+        d = weakref.WeakValueDictionary()
+        self.assertRaises(TypeError, d.update, {}, {})
+        self.assertRaises(TypeError, d.update, (), ())
+        self.assertEqual(list(d.keys()), [])
+        # special keyword arguments
+        o = Object(3)
+        for kw in 'self', 'dict', 'other', 'iterable':
+            d = weakref.WeakValueDictionary()
+            d.update(**{kw: o})
+            self.assertEqual(list(d.keys()), [kw])
+            self.assertEqual(d[kw], o)
 
     def test_weak_keyed_dict_update(self):
         self.check_update(weakref.WeakKeyDictionary,