1 files changed, 39 insertions, 0 deletions
diff --git a/third_party/rust/tinystr/tests/serde.rs b/third_party/rust/tinystr/tests/serde.rs
new file mode 100644
index 0000000000..282914e6fc
--- /dev/null
+++ b/third_party/rust/tinystr/tests/serde.rs
@@ -0,0 +1,39 @@
+// This file is part of ICU4X. For terms of use, please see the file
+// called LICENSE at the top level of the ICU4X source tree
+// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
+
+use tinystr::*;
+
+// Tests largely adapted from `tinystr` crate
+// https://github.com/zbraniecki/tinystr/blob/4e4eab55dd6bded7f29a18b41452c506c461716c/tests/serde.rs
+
+macro_rules! test_roundtrip {
+    ($f:ident, $n:literal, $val:expr) => {
+        #[test]
+        fn $f() {
+            let tiny: TinyAsciiStr<$n> = $val.parse().unwrap();
+            let json_string = serde_json::to_string(&tiny).unwrap();
+            let expected_json = concat!("\"", $val, "\"");
+            assert_eq!(json_string, expected_json);
+            let recover: TinyAsciiStr<$n> = serde_json::from_str(&json_string).unwrap();
+            assert_eq!(&*tiny, &*recover);
+
+            let bin = bincode::serialize(&tiny).unwrap();
+            assert_eq!(bin, &tiny.all_bytes()[..]);
+            let debin: TinyAsciiStr<$n> = bincode::deserialize(&bin).unwrap();
+            assert_eq!(&*tiny, &*debin);
+
+            let post = postcard::to_stdvec(&tiny).unwrap();
+            assert_eq!(post, &tiny.all_bytes()[..]);
+            let unpost: TinyAsciiStr<$n> = postcard::from_bytes(&post).unwrap();
+            assert_eq!(&*tiny, &*unpost);
+        }
+    };
+}
+
+test_roundtrip!(test_roundtrip4_1, 4, "en");
+test_roundtrip!(test_roundtrip4_2, 4, "Latn");
+test_roundtrip!(test_roundtrip8, 8, "calendar");
+test_roundtrip!(test_roundtrip16, 16, "verylongstring");
+test_roundtrip!(test_roundtrip10, 11, "shortstring");
+test_roundtrip!(test_roundtrip30, 24, "veryveryverylongstring");