diff --git a/tests/rustdoc-json/attrs/optimize.rs b/tests/rustdoc-json/attrs/optimize.rs
new file mode 100644
index 0000000000000..0bed0ad18c31b
--- /dev/null
+++ b/tests/rustdoc-json/attrs/optimize.rs
@@ -0,0 +1,13 @@
+#![feature(optimize_attribute)]
+
+//@ is "$.index[?(@.name=='speed')].attrs" '["#[attr = Optimize(Speed)]"]'
+#[optimize(speed)]
+pub fn speed() {}
+
+//@ is "$.index[?(@.name=='size')].attrs" '["#[attr = Optimize(Size)]"]'
+#[optimize(size)]
+pub fn size() {}
+
+//@ is "$.index[?(@.name=='none')].attrs" '["#[attr = Optimize(DoNotOptimize)]"]'
+#[optimize(none)]
+pub fn none() {}