diff --git a/tests/rustdoc-json/attrs/cold.rs b/tests/rustdoc-json/attrs/cold.rs
new file mode 100644
index 0000000000000..e219345d669c5
--- /dev/null
+++ b/tests/rustdoc-json/attrs/cold.rs
@@ -0,0 +1,3 @@
+//@ is "$.index[?(@.name=='cold_fn')].attrs" '["#[attr = Cold]"]'
+#[cold]
+pub fn cold_fn() {}