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-rw-r--r--third_party/rust/darling/tests/defaults.rs32
1 files changed, 32 insertions, 0 deletions
diff --git a/third_party/rust/darling/tests/defaults.rs b/third_party/rust/darling/tests/defaults.rs
new file mode 100644
index 0000000000..c6003ec4ba
--- /dev/null
+++ b/third_party/rust/darling/tests/defaults.rs
@@ -0,0 +1,32 @@
+#[macro_use]
+extern crate darling;
+#[macro_use]
+extern crate quote;
+#[macro_use]
+extern crate syn;
+
+use darling::FromDeriveInput;
+
+mod foo {
+ pub mod bar {
+ pub fn init() -> String {
+ String::from("hello")
+ }
+ }
+}
+
+#[derive(FromDeriveInput)]
+#[darling(attributes(speak))]
+pub struct SpeakerOpts {
+ #[darling(default="foo::bar::init")]
+ first_word: String,
+}
+
+#[test]
+fn path_default() {
+ let speaker: SpeakerOpts = FromDeriveInput::from_derive_input(&parse_quote! {
+ struct Foo;
+ }).expect("Unit struct with no attrs should parse");
+
+ assert_eq!(speaker.first_word, "hello");
+} \ No newline at end of file