Issue #22958: Constructor and update method of weakref.WeakValueDictionary

now accept the self and the dict keyword arguments.

1 files changed, 25 insertions, 0 deletions

diff --git a/Lib/test/test_weakref.py b/Lib/test/test_weakref.py
index 3e7347cf33..212cf340f4 100644
--- a/Lib/test/test_weakref.py
+++ b/Lib/test/test_weakref.py
@@ -1408,6 +1408,18 @@ class MappingTestCase(TestBase):
         dict2 = weakref.WeakValueDictionary(dict)
         self.assertEqual(dict[364], o)
 
+    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', 'dict', '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 = list(map(Object, range(self.COUNT)))
@@ -1488,6 +1500,19 @@ class MappingTestCase(TestBase):
     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,