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Test special cases that reaches SeqRefDeserializer::deserialize_any len==0 condition

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failures (2):
    newtype_enum::empty_struct_from_seq
    newtype_enum::tuple0
This commit is contained in:
Mingun 2024-08-17 16:05:34 +05:00
parent 6588b0ad37
commit 4c5fec1363
2 changed files with 58 additions and 0 deletions
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2
serde/src/private/de.rs
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@ -2188,6 +2188,7 @@ mod content {
// test_partially_untagged_enum
// test_partially_untagged_enum_desugared
// Covered by tests/test_enum_untagged.rs
// newtype_enum::tuple0
// newtype_enum::tuple2
Some(Content::Seq(v)) => {
de::Deserializer::deserialize_any(SeqRefDeserializer::new(v), visitor)
@ -2219,6 +2220,7 @@ mod content {
}
// Covered by tests/test_enum_untagged.rs
// newtype_enum::struct_from_seq
// newtype_enum::empty_struct_from_seq
Some(Content::Seq(v)) => {
de::Deserializer::deserialize_any(SeqRefDeserializer::new(v), visitor)
}

56
test_suite/tests/test_enum_untagged.rs
View File

@ -147,8 +147,10 @@ mod newtype_enum {
enum Inner {
Unit,
Newtype(u8),
Tuple0(),
Tuple2(u8, u8),
Struct { f: u8 },
EmptyStruct {},
}
// Reaches crate::private::de::content::VariantRefDeserializer::unit_variant
@ -178,6 +180,22 @@ mod newtype_enum {
);
}
// Reaches crate::private::de::content::VariantRefDeserializer::tuple_variant
#[test]
fn tuple0() {
assert_tokens(
&Outer::Inner(Inner::Tuple0()),
&[
Token::TupleVariant {
name: "Inner",
variant: "Tuple0",
len: 0,
},
Token::TupleVariantEnd,
],
);
}
// Reaches crate::private::de::content::VariantRefDeserializer::tuple_variant
#[test]
fn tuple2() {
@ -233,6 +251,44 @@ mod newtype_enum {
],
);
}
// Reaches crate::private::de::content::VariantRefDeserializer::struct_variant
// Content::Map case
// Special case - empty map
#[test]
fn empty_struct_from_map() {
assert_de_tokens(
&Outer::Inner(Inner::EmptyStruct {}),
&[
Token::Map { len: Some(1) },
// tag
Token::Str("EmptyStruct"),
// content
Token::Map { len: Some(0) },
Token::MapEnd,
Token::MapEnd,
],
);
}
// Reaches crate::private::de::content::VariantRefDeserializer::struct_variant
// Content::Seq case
// Special case - empty seq
#[test]
fn empty_struct_from_seq() {
assert_de_tokens(
&Outer::Inner(Inner::EmptyStruct {}),
&[
Token::Map { len: Some(1) },
// tag
Token::Str("EmptyStruct"),
// content
Token::Seq { len: Some(0) },
Token::SeqEnd,
Token::MapEnd,
],
);
}
}
// Reaches crate::private::de::content::ContentRefDeserializer::deserialize_option