1 files changed, 19 insertions, 0 deletions
diff --git a/third_party/rust/uuid/examples/uuid_macro.rs b/third_party/rust/uuid/examples/uuid_macro.rs
new file mode 100644
index 0000000000..c4ff0484b5
--- /dev/null
+++ b/third_party/rust/uuid/examples/uuid_macro.rs
@@ -0,0 +1,19 @@
+//! Using the `uuid!` macro.
+//!
+//! `uuid!` will parse encoded UUIDs at compile time instead of at runtime.
+//! If you've got a fixed UUID string handy then consider using `uuid!` instead
+//! of `Uuid::parse_str` or `str::parse`.
+//!
+//! If you enable the `macro-diagnostics` feature, you can see much better
+//! error messages.
+
+#[test]
+fn parse_uuid_at_compile_time() {
+    use uuid::uuid;
+
+    let uuid = uuid!("67e55044-10b1-426f-9247-bb680e5fe0c8");
+
+    assert_eq!(Some(uuid::Version::Random), uuid.get_version());
+}
+
+fn main() {}