1 files changed, 27 insertions, 0 deletions
diff --git a/third_party/rust/darling/tests/generics.rs b/third_party/rust/darling/tests/generics.rs
new file mode 100644
index 0000000000..a83d03e284
--- /dev/null
+++ b/third_party/rust/darling/tests/generics.rs
@@ -0,0 +1,27 @@
+#[macro_use]
+extern crate darling;
+#[macro_use]
+extern crate syn;
+#[macro_use]
+extern crate quote;
+
+use darling::FromDeriveInput;
+
+#[derive(Debug, Clone, FromMeta)]
+struct Wrapper<T>(pub T);
+
+#[derive(Debug, FromDeriveInput)]
+#[darling(attributes(hello))]
+struct Foo<T> {
+    lorem: Wrapper<T>,
+}
+
+#[test]
+fn expansion() {
+    let di = parse_quote! {
+        #[hello(lorem = "Hello")]
+        pub struct Foo;
+    };
+
+    Foo::<String>::from_derive_input(&di).unwrap();
+}