1 files changed, 80 insertions, 0 deletions
diff --git a/third_party/rust/ron/tests/152_bitflags.rs b/third_party/rust/ron/tests/152_bitflags.rs
new file mode 100644
index 0000000000..b51fd55102
--- /dev/null
+++ b/third_party/rust/ron/tests/152_bitflags.rs
@@ -0,0 +1,80 @@
+use bitflags::*;
+use option_set::option_set;
+
+#[macro_use]
+extern crate bitflags_serial;
+
+bitflags! {
+    #[derive(serde::Serialize, serde::Deserialize)]
+    struct TestGood: u8 {
+        const ONE = 1;
+        const TWO = 1 << 1;
+        const THREE  = 1 << 2;
+    }
+}
+
+option_set! {
+    struct TestBad: UpperCamel + u8 {
+        const ONE = 1;
+        const TWO = 1 << 1;
+        const THREE  = 1 << 2;
+    }
+}
+
+bitflags_serial! {
+    struct TestBadTWO: u8 {
+        const ONE = 1;
+        const TWO = 1 << 1;
+        const THREE  = 1 << 2;
+    }
+}
+
+#[test]
+fn test_bitflags() {
+    // Test case provided by jaynus in
+    // https://github.com/ron-rs/ron/issues/152#issue-421298302
+
+    let flag_good = TestGood::ONE | TestGood::TWO;
+
+    let json_ser_good = serde_json::ser::to_string(&flag_good).unwrap();
+    let ron_ser_good = ron::ser::to_string(&flag_good).unwrap();
+
+    assert_eq!(json_ser_good, "{\"bits\":3}");
+    assert_eq!(ron_ser_good, "(bits:3)");
+
+    let json_de_good: TestGood = serde_json::de::from_str(json_ser_good.as_str()).unwrap();
+    let ron_de_good: TestGood = ron::de::from_str(ron_ser_good.as_str()).unwrap();
+
+    assert_eq!(json_de_good, flag_good);
+    assert_eq!(ron_de_good, flag_good);
+
+    // option_set
+    let flag_bad = TestBad::ONE | TestBad::TWO;
+
+    let json_ser_bad = serde_json::ser::to_string(&flag_bad).unwrap();
+    let ron_ser_bad = ron::ser::to_string(&flag_bad).unwrap();
+
+    assert_eq!(json_ser_bad, "[\"One\",\"Two\"]");
+    assert_eq!(ron_ser_bad, "[\"One\",\"Two\"]");
+
+    let json_de_bad: TestBad = serde_json::de::from_str(json_ser_bad.as_str()).unwrap();
+    let ron_de_bad: TestBad = ron::de::from_str(ron_ser_bad.as_str()).unwrap();
+
+    assert_eq!(json_de_bad, flag_bad);
+    assert_eq!(ron_de_bad, flag_bad);
+
+    // bitflags_serial
+    let flag_bad_two = TestBadTWO::ONE | TestBadTWO::TWO;
+
+    let json_ser_bad_two = serde_json::ser::to_string(&flag_bad_two).unwrap();
+    let ron_ser_bad_two = ron::ser::to_string(&flag_bad_two).unwrap();
+
+    assert_eq!(json_ser_bad_two, "[\"ONE\",\"TWO\"]");
+    assert_eq!(ron_ser_bad_two, "[ONE,TWO]");
+
+    let json_de_bad_two: TestBadTWO = serde_json::de::from_str(json_ser_bad_two.as_str()).unwrap();
+    let ron_de_bad_two: TestBadTWO = ron::de::from_str(ron_ser_bad_two.as_str()).unwrap();
+
+    assert_eq!(json_de_bad_two, flag_bad_two);
+    assert_eq!(ron_de_bad_two, flag_bad_two);
+}