diff --git a/tests/basics/builtin_slice.py b/tests/basics/builtin_slice.py
index 4da1229fa025c792d0aa392a32672b5e6aba68d9..df84d5c57bbc31d4c475d30b966b71f08dcd16f3 100644
--- a/tests/basics/builtin_slice.py
+++ b/tests/basics/builtin_slice.py
@@ -4,4 +4,8 @@
 class A:
     def __getitem__(self, idx):
         print(idx)
-A()[1:2:3]
+        return idx
+s = A()[1:2:3]
+
+# check type
+print(type(s) is slice)