1 files changed, 59 insertions, 0 deletions
diff --git a/vendor/darling-0.14.4/tests/from_type_param.rs b/vendor/darling-0.14.4/tests/from_type_param.rs
new file mode 100644
index 000000000..50ec3061e
--- /dev/null
+++ b/vendor/darling-0.14.4/tests/from_type_param.rs
@@ -0,0 +1,59 @@
+use darling::FromTypeParam;
+use syn::{parse_quote, DeriveInput, GenericParam, Ident, TypeParam};
+
+#[derive(FromTypeParam)]
+#[darling(attributes(lorem), from_ident)]
+struct Lorem {
+    ident: Ident,
+    bounds: Vec<syn::TypeParamBound>,
+    foo: bool,
+    bar: Option<String>,
+}
+
+impl From<Ident> for Lorem {
+    fn from(ident: Ident) -> Self {
+        Lorem {
+            ident,
+            foo: false,
+            bar: None,
+            bounds: Default::default(),
+        }
+    }
+}
+
+fn extract_type(param: &GenericParam) -> &TypeParam {
+    match *param {
+        GenericParam::Type(ref ty) => ty,
+        _ => unreachable!("Not a type param"),
+    }
+}
+
+#[test]
+#[allow(clippy::bool_assert_comparison)]
+fn expand_many() {
+    let di: DeriveInput = parse_quote! {
+        struct Baz<
+            #[lorem(foo)] T,
+            #[lorem(bar = "x")] U: Eq + ?Sized
+        >(T, U);
+    };
+
+    let params = di.generics.params;
+
+    {
+        let ty = extract_type(&params[0]);
+        let lorem = Lorem::from_type_param(ty).unwrap();
+        assert_eq!(lorem.ident, "T");
+        assert_eq!(lorem.foo, true);
+        assert_eq!(lorem.bar, None);
+    }
+
+    {
+        let ty = extract_type(&params[1]);
+        let lorem = Lorem::from_type_param(ty).unwrap();
+        assert_eq!(lorem.ident, "U");
+        assert_eq!(lorem.foo, false);
+        assert_eq!(lorem.bar, Some("x".to_string()));
+        assert_eq!(lorem.bounds.len(), 2);
+    }
+}