[WIP] Add unexpected keyword argument test

Author: alanhdu

test-data/unit/check-ctypes.test

@@ -176,6 +176,8 @@ intarr4(*float_values) # E: Array constructor argument 1 of type "builtins.list[
 import ctypes
 intarr4 = ctypes.c_int * 4
 
+intarr4(1, 2, 3, x=3)   # E: Unexpected keyword argument "x" for "Array"
+
 x = {"a": 1, "b": 2}
 intarr4(**x)   # E: Too many arguments for "Array"