1 files changed, 81 insertions, 0 deletions
diff --git a/third_party/rust/serde_repr/tests/test.rs b/third_party/rust/serde_repr/tests/test.rs
new file mode 100644
index 0000000000..d442448dd5
--- /dev/null
+++ b/third_party/rust/serde_repr/tests/test.rs
@@ -0,0 +1,81 @@
+#![allow(
+    clippy::derive_partial_eq_without_eq,
+    // Clippy bug: https://github.com/rust-lang/rust-clippy/issues/7422
+    clippy::nonstandard_macro_braces,
+    clippy::wildcard_imports,
+)]
+
+use serde_repr::{Deserialize_repr, Serialize_repr};
+
+mod small_prime {
+    use super::*;
+
+    #[derive(Serialize_repr, Deserialize_repr, PartialEq, Debug)]
+    #[repr(u8)]
+    enum SmallPrime {
+        Two = 2,
+        Three = 3,
+        Five = 5,
+        Seven = 7,
+    }
+
+    #[test]
+    fn test_serialize() {
+        let j = serde_json::to_string(&SmallPrime::Seven).unwrap();
+        assert_eq!(j, "7");
+    }
+
+    #[test]
+    fn test_deserialize() {
+        let p: SmallPrime = serde_json::from_str("2").unwrap();
+        assert_eq!(p, SmallPrime::Two);
+    }
+}
+
+mod other {
+    use super::*;
+
+    #[derive(Serialize_repr, Deserialize_repr, PartialEq, Debug)]
+    #[repr(u8)]
+    enum TestOther {
+        A,
+        B,
+        #[serde(other, rename = "useless")]
+        Other,
+    }
+
+    #[test]
+    fn test_deserialize() {
+        let p: TestOther = serde_json::from_str("0").unwrap();
+        assert_eq!(p, TestOther::A);
+        let p: TestOther = serde_json::from_str("1").unwrap();
+        assert_eq!(p, TestOther::B);
+        let p: TestOther = serde_json::from_str("5").unwrap();
+        assert_eq!(p, TestOther::Other);
+    }
+}
+
+mod implicit_discriminant {
+    use super::*;
+
+    #[derive(Serialize_repr, Deserialize_repr, PartialEq, Debug)]
+    #[repr(u8)]
+    enum ImplicitDiscriminant {
+        Zero,
+        One,
+        Two,
+        Three,
+    }
+
+    #[test]
+    fn test_serialize() {
+        let j = serde_json::to_string(&ImplicitDiscriminant::Three).unwrap();
+        assert_eq!(j, "3");
+    }
+
+    #[test]
+    fn test_deserialize() {
+        let p: ImplicitDiscriminant = serde_json::from_str("2").unwrap();
+        assert_eq!(p, ImplicitDiscriminant::Two);
+    }
+}