1 files changed, 18 insertions, 0 deletions
diff --git a/third_party/rust/num-derive/tests/issue-9.rs b/third_party/rust/num-derive/tests/issue-9.rs
new file mode 100644
index 0000000000..30c04d2f46
--- /dev/null
+++ b/third_party/rust/num-derive/tests/issue-9.rs
@@ -0,0 +1,18 @@
+#![deny(unused_qualifications)]
+
+#[macro_use]
+extern crate num_derive;
+use num::FromPrimitive;
+use num::ToPrimitive;
+
+#[derive(FromPrimitive, ToPrimitive)]
+pub enum SomeEnum {
+    A = 1,
+}
+
+#[test]
+fn test_unused_qualifications() {
+    assert!(SomeEnum::from_u64(1).is_some());
+    assert!(SomeEnum::from_i64(-1).is_none());
+    assert!(SomeEnum::A.to_i64().is_some());
+}