diff --git a/test/completion/functions.py b/test/completion/functions.py
index bb00efb3..54bd71b0 100644
--- a/test/completion/functions.py
+++ b/test/completion/functions.py
@@ -160,10 +160,13 @@ def args_func(*args):
 exe = args_func(1, "")
 #? int()
 exe[0]
-
 #? str()
 exe[1]
 
+# illegal args (TypeError)
+#? 
+args_func(*1)[0]
+
 _list = [1,""]
 exe2 = args_func(_list)[0]