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Fix roundtrip inconsistency:

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- deserialization of flatten unit variant is possible
- serialization of such variant gives Err("can only flatten structs and maps (got an enum)")
This commit is contained in:
Mingun
2024-08-03 15:12:21 +05:00
committed by Oli Scherer
parent b6f339ca36
commit cb6eaea151
2 changed files with 39 additions and 2 deletions
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test_suite/tests/test_annotations.rs
+35
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@@ -2655,11 +2655,46 @@ mod flatten {
#[derive(Debug, PartialEq, Serialize, Deserialize)]
enum Enum {
Unit,
Newtype(HashMap<String, String>),
Tuple(u32, u32),
Struct { index: u32, value: u32 },
}
#[test]
fn unit() {
let value = Flatten {
data: Enum::Unit,
extra: HashMap::from_iter([("extra_key".into(), "extra value".into())]),
};
assert_tokens(
&value,
&[
Token::Map { len: None },
// data
Token::Str("Unit"), // variant
Token::Unit,
// extra
Token::Str("extra_key"),
Token::Str("extra value"),
Token::MapEnd,
],
);
assert_de_tokens(
&value,
&[
Token::Map { len: None },
// extra
Token::Str("extra_key"),
Token::Str("extra value"),
// data
Token::Str("Unit"), // variant
Token::Unit,
Token::MapEnd,
],
);
}
#[test]
fn newtype() {
assert_tokens(