1 files changed, 42 insertions, 0 deletions
diff --git a/third_party/rust/darling/tests/hash_map.rs b/third_party/rust/darling/tests/hash_map.rs
new file mode 100644
index 0000000000..5d9a0114ed
--- /dev/null
+++ b/third_party/rust/darling/tests/hash_map.rs
@@ -0,0 +1,42 @@
+use std::collections::HashMap;
+
+use darling::FromMeta;
+use syn::{parse_quote, Attribute, Path};
+
+#[derive(Debug, FromMeta, PartialEq, Eq)]
+struct MapValue {
+    name: String,
+    #[darling(default)]
+    option: bool,
+}
+
+#[test]
+fn parse_map() {
+    let attr: Attribute = parse_quote! {
+        #[foo(first(name = "Hello", option), the::second(name = "Second"))]
+    };
+
+    let meta = attr.parse_meta().unwrap();
+    let map: HashMap<Path, MapValue> = FromMeta::from_meta(&meta).unwrap();
+
+    let comparison: HashMap<Path, MapValue> = vec![
+        (
+            parse_quote!(first),
+            MapValue {
+                name: "Hello".into(),
+                option: true,
+            },
+        ),
+        (
+            parse_quote!(the::second),
+            MapValue {
+                name: "Second".into(),
+                option: false,
+            },
+        ),
+    ]
+    .into_iter()
+    .collect();
+
+    assert_eq!(comparison, map);
+}