1 files changed, 16 insertions, 1 deletions
diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py
index 7c66b90..2c814d5 100644
--- a/Lib/test/test_functools.py
+++ b/Lib/test/test_functools.py
@@ -2867,11 +2867,26 @@ class TestSingleDispatch(unittest.TestCase):
 
     def test_invalid_positional_argument(self):
         @functools.singledispatch
-        def f(*args):
+        def f(*args, **kwargs):
             pass
         msg = 'f requires at least 1 positional argument'
         with self.assertRaisesRegex(TypeError, msg):
             f()
+        msg = 'f requires at least 1 positional argument'
+        with self.assertRaisesRegex(TypeError, msg):
+            f(a=1)
+
+    def test_invalid_positional_argument_singledispatchmethod(self):
+        class A:
+            @functools.singledispatchmethod
+            def t(self, *args, **kwargs):
+                pass
+        msg = 't requires at least 1 positional argument'
+        with self.assertRaisesRegex(TypeError, msg):
+            A().t()
+        msg = 't requires at least 1 positional argument'
+        with self.assertRaisesRegex(TypeError, msg):
+            A().t(a=1)
 
     def test_union(self):
         @functools.singledispatch