bpo-20627: Fix error message when keyword arguments are used (#2115)

1 files changed, 26 insertions, 0 deletions

diff --git a/Lib/test/test_call.py b/Lib/test/test_call.py
index f46eb21..ca678b9 100644
--- a/Lib/test/test_call.py
+++ b/Lib/test/test_call.py
@@ -5,6 +5,8 @@ try:
     import _testcapi
 except ImportError:
     _testcapi = None
+import struct
+import collections
 
 # The test cases here cover several paths through the function calling
 # code.  They depend on the METH_XXX flag that is used to define a C
@@ -160,6 +162,30 @@ class CFunctionCallsErrorMessages(unittest.TestCase):
         msg = r"^hasattr\(\) takes no keyword arguments$"
         self.assertRaisesRegex(TypeError, msg, hasattr, x=2)
 
+    def test_varargs6_kw(self):
+        msg = r"^getattr\(\) takes no keyword arguments$"
+        self.assertRaisesRegex(TypeError, msg, getattr, x=2)
+
+    def test_varargs7_kw(self):
+        msg = r"^next\(\) takes no keyword arguments$"
+        self.assertRaisesRegex(TypeError, msg, next, x=2)
+
+    def test_varargs8_kw(self):
+        msg = r"^pack\(\) takes no keyword arguments$"
+        self.assertRaisesRegex(TypeError, msg, struct.pack, x=2)
+
+    def test_varargs9_kw(self):
+        msg = r"^pack_into\(\) takes no keyword arguments$"
+        self.assertRaisesRegex(TypeError, msg, struct.pack_into, x=2)
+
+    def test_varargs10_kw(self):
+        msg = r"^index\(\) takes no keyword arguments$"
+        self.assertRaisesRegex(TypeError, msg, collections.deque().index, x=2)
+
+    def test_varargs11_kw(self):
+        msg = r"^pack\(\) takes no keyword arguments$"
+        self.assertRaisesRegex(TypeError, msg, struct.Struct.pack, struct.Struct(""), x=2)
+
     def test_oldargs0_1(self):
         msg = r"keys\(\) takes no arguments \(1 given\)"
         self.assertRaisesRegex(TypeError, msg, {}.keys, 0)