993 lines
21 KiB
Rust
993 lines
21 KiB
Rust
#[macro_use]
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extern crate serde_derive;
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extern crate serde;
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use self::serde::{Serialize, Serializer, Deserialize, Deserializer};
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extern crate serde_test;
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use self::serde_test::{
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Error,
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Token,
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assert_tokens,
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assert_ser_tokens,
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assert_de_tokens,
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assert_de_tokens_error
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};
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trait MyDefault: Sized {
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fn my_default() -> Self;
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}
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trait ShouldSkip: Sized {
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fn should_skip(&self) -> bool;
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}
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trait SerializeWith: Sized {
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fn serialize_with<S>(&self, ser: S) -> Result<S::Ok, S::Error>
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where S: Serializer;
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}
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trait DeserializeWith: Sized {
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fn deserialize_with<'de, D>(de: D) -> Result<Self, D::Error>
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where D: Deserializer<'de>;
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}
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impl MyDefault for i32 {
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fn my_default() -> Self { 123 }
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}
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impl ShouldSkip for i32 {
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fn should_skip(&self) -> bool { *self == 123 }
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}
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impl SerializeWith for i32 {
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fn serialize_with<S>(&self, ser: S) -> Result<S::Ok, S::Error>
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where S: Serializer
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{
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if *self == 123 {
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true.serialize(ser)
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} else {
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false.serialize(ser)
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}
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}
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}
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impl DeserializeWith for i32 {
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fn deserialize_with<'de, D>(de: D) -> Result<Self, D::Error>
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where D: Deserializer<'de>
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{
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if try!(Deserialize::deserialize(de)) {
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Ok(123)
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} else {
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Ok(2)
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}
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}
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}
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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struct DefaultStruct<A, B, C, D, E>
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where C: MyDefault,
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E: MyDefault,
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{
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a1: A,
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#[serde(default)]
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a2: B,
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#[serde(default="MyDefault::my_default")]
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a3: C,
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#[serde(skip_deserializing)]
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a4: D,
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#[serde(skip_deserializing, default="MyDefault::my_default")]
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a5: E,
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}
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#[test]
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fn test_default_struct() {
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assert_de_tokens(
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&DefaultStruct { a1: 1, a2: 2, a3: 3, a4: 0, a5: 123 },
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&[
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Token::Struct("DefaultStruct", 3),
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Token::Str("a1"),
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Token::I32(1),
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Token::Str("a2"),
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Token::I32(2),
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Token::Str("a3"),
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Token::I32(3),
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Token::Str("a4"),
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Token::I32(4),
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Token::Str("a5"),
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Token::I32(5),
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Token::StructEnd,
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]
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);
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assert_de_tokens(
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&DefaultStruct { a1: 1, a2: 0, a3: 123, a4: 0, a5: 123 },
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&[
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Token::Struct("DefaultStruct", 1),
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Token::Str("a1"),
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Token::I32(1),
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Token::StructEnd,
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]
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);
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}
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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enum DefaultEnum<A, B, C, D, E>
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where C: MyDefault,
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E: MyDefault
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{
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Struct {
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a1: A,
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#[serde(default)]
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a2: B,
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#[serde(default="MyDefault::my_default")]
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a3: C,
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#[serde(skip_deserializing)]
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a4: D,
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#[serde(skip_deserializing, default="MyDefault::my_default")]
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a5: E,
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}
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}
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#[test]
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fn test_default_enum() {
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assert_de_tokens(
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&DefaultEnum::Struct { a1: 1, a2: 2, a3: 3, a4: 0, a5: 123 },
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&[
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Token::StructVariant("DefaultEnum", "Struct", 3),
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Token::Str("a1"),
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Token::I32(1),
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Token::Str("a2"),
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Token::I32(2),
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Token::Str("a3"),
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Token::I32(3),
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Token::Str("a4"),
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Token::I32(4),
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Token::Str("a5"),
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Token::I32(5),
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Token::StructVariantEnd,
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]
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);
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assert_de_tokens(
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&DefaultEnum::Struct { a1: 1, a2: 0, a3: 123, a4: 0, a5: 123 },
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&[
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Token::StructVariant("DefaultEnum", "Struct", 3),
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Token::Str("a1"),
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Token::I32(1),
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Token::StructVariantEnd,
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]
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);
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}
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// Does not implement std::default::Default.
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#[derive(Debug, PartialEq, Deserialize)]
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struct NoStdDefault(i8);
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impl MyDefault for NoStdDefault {
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fn my_default() -> Self {
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NoStdDefault(123)
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}
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}
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#[derive(Debug, PartialEq, Deserialize)]
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struct ContainsNoStdDefault<A: MyDefault> {
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#[serde(default="MyDefault::my_default")]
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a: A,
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}
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// Tests that a struct field does not need to implement std::default::Default if
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// it is annotated with `default=...`.
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#[test]
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fn test_no_std_default() {
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assert_de_tokens(
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&ContainsNoStdDefault { a: NoStdDefault(123) },
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&[
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Token::Struct("ContainsNoStdDefault", 1),
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Token::StructEnd,
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]
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);
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assert_de_tokens(
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&ContainsNoStdDefault { a: NoStdDefault(8) },
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&[
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Token::Struct("ContainsNoStdDefault", 1),
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Token::Str("a"),
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Token::NewtypeStruct("NoStdDefault"),
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Token::I8(8),
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Token::StructEnd,
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]
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);
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}
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// Does not implement Deserialize.
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#[derive(Debug, PartialEq)]
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struct NotDeserializeStruct(i8);
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impl Default for NotDeserializeStruct {
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fn default() -> Self {
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NotDeserializeStruct(123)
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}
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}
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impl DeserializeWith for NotDeserializeStruct {
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fn deserialize_with<'de, D>(_: D) -> Result<Self, D::Error>
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where D: Deserializer<'de>
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{
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panic!()
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}
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}
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// Does not implement Deserialize.
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#[derive(Debug, PartialEq)]
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enum NotDeserializeEnum { Trouble }
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impl MyDefault for NotDeserializeEnum {
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fn my_default() -> Self {
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NotDeserializeEnum::Trouble
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}
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}
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#[derive(Debug, PartialEq, Deserialize)]
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struct ContainsNotDeserialize<A, B, C: DeserializeWith, E: MyDefault> {
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#[serde(skip_deserializing)]
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a: A,
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#[serde(skip_deserializing, default)]
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b: B,
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#[serde(deserialize_with="DeserializeWith::deserialize_with", default)]
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c: C,
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#[serde(skip_deserializing, default="MyDefault::my_default")]
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e: E,
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}
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// Tests that a struct field does not need to implement Deserialize if it is
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// annotated with skip_deserializing, whether using the std Default or a
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// custom default.
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#[test]
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fn test_elt_not_deserialize() {
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assert_de_tokens(
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&ContainsNotDeserialize {
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a: NotDeserializeStruct(123),
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b: NotDeserializeStruct(123),
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c: NotDeserializeStruct(123),
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e: NotDeserializeEnum::Trouble,
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},
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&[
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Token::Struct("ContainsNotDeserialize", 3),
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Token::StructEnd,
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]
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);
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}
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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#[serde(deny_unknown_fields)]
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struct DenyUnknown {
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a1: i32,
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}
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#[test]
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fn test_ignore_unknown() {
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// 'Default' allows unknown. Basic smoke test of ignore...
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assert_de_tokens(
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&DefaultStruct { a1: 1, a2: 2, a3: 3, a4: 0, a5: 123 },
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&[
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Token::Struct("DefaultStruct", 5),
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Token::Str("whoops1"),
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Token::I32(2),
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Token::Str("a1"),
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Token::I32(1),
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Token::Str("whoops2"),
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Token::Seq(Some(1)),
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Token::I32(2),
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Token::SeqEnd,
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Token::Str("a2"),
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Token::I32(2),
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Token::Str("whoops3"),
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Token::I32(2),
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Token::Str("a3"),
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Token::I32(3),
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Token::StructEnd,
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]
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);
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assert_de_tokens_error::<DenyUnknown>(
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&[
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Token::Struct("DenyUnknown", 2),
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Token::Str("a1"),
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Token::I32(1),
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Token::Str("whoops"),
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],
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Error::Message("unknown field `whoops`, expected `a1`".to_owned())
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);
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}
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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#[serde(rename="Superhero")]
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struct RenameStruct {
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a1: i32,
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#[serde(rename="a3")]
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a2: i32,
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}
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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#[serde(rename(serialize="SuperheroSer", deserialize="SuperheroDe"))]
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struct RenameStructSerializeDeserialize {
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a1: i32,
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#[serde(rename(serialize="a4", deserialize="a5"))]
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a2: i32,
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}
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#[test]
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fn test_rename_struct() {
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assert_tokens(
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&RenameStruct { a1: 1, a2: 2 },
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&[
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Token::Struct("Superhero", 2),
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Token::Str("a1"),
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Token::I32(1),
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Token::Str("a3"),
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Token::I32(2),
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Token::StructEnd,
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]
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);
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assert_ser_tokens(
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&RenameStructSerializeDeserialize { a1: 1, a2: 2 },
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&[
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Token::Struct("SuperheroSer", 2),
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Token::Str("a1"),
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Token::I32(1),
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Token::Str("a4"),
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Token::I32(2),
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Token::StructEnd,
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]
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);
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assert_de_tokens(
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&RenameStructSerializeDeserialize { a1: 1, a2: 2 },
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&[
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Token::Struct("SuperheroDe", 2),
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Token::Str("a1"),
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Token::I32(1),
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Token::Str("a5"),
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Token::I32(2),
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Token::StructEnd,
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]
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);
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}
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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#[serde(rename="Superhero")]
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enum RenameEnum {
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#[serde(rename="bruce_wayne")]
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Batman,
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#[serde(rename="clark_kent")]
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Superman(i8),
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#[serde(rename="diana_prince")]
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WonderWoman(i8, i8),
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#[serde(rename="barry_allan")]
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Flash {
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#[serde(rename="b")]
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a: i32,
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},
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}
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#[derive(Debug, PartialEq, Deserialize, Serialize)]
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#[serde(rename(serialize="SuperheroSer", deserialize="SuperheroDe"))]
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enum RenameEnumSerializeDeserialize<A> {
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#[serde(rename(serialize="dick_grayson", deserialize="jason_todd"))]
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Robin {
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a: i8,
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#[serde(rename(serialize="c"))]
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#[serde(rename(deserialize="d"))]
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b: A,
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},
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}
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#[test]
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fn test_rename_enum() {
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assert_tokens(
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&RenameEnum::Batman,
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&[
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Token::UnitVariant("Superhero", "bruce_wayne"),
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]
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);
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assert_tokens(
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&RenameEnum::Superman(0),
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&[
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Token::NewtypeVariant("Superhero", "clark_kent"),
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Token::I8(0),
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]
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);
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assert_tokens(
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&RenameEnum::WonderWoman(0, 1),
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&[
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Token::TupleVariant("Superhero", "diana_prince", 2),
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Token::I8(0),
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Token::I8(1),
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Token::TupleVariantEnd,
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]
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);
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assert_tokens(
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&RenameEnum::Flash { a: 1 },
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&[
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Token::StructVariant("Superhero", "barry_allan", 1),
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Token::Str("b"),
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Token::I32(1),
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Token::StructVariantEnd,
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]
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);
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assert_ser_tokens(
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&RenameEnumSerializeDeserialize::Robin {
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a: 0,
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b: String::new(),
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},
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&[
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Token::StructVariant("SuperheroSer", "dick_grayson", 2),
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Token::Str("a"),
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Token::I8(0),
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Token::Str("c"),
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Token::Str(""),
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Token::StructVariantEnd,
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]
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);
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assert_de_tokens(
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&RenameEnumSerializeDeserialize::Robin {
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a: 0,
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b: String::new(),
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},
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&[
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Token::StructVariant("SuperheroDe", "jason_todd", 2),
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Token::Str("a"),
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Token::I8(0),
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Token::Str("d"),
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Token::Str(""),
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Token::StructVariantEnd,
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]
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);
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}
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#[derive(Debug, PartialEq, Serialize)]
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struct SkipSerializingStruct<'a, B, C> where C: ShouldSkip {
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a: &'a i8,
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#[serde(skip_serializing)]
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b: B,
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#[serde(skip_serializing_if="ShouldSkip::should_skip")]
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c: C,
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}
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#[test]
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fn test_skip_serializing_struct() {
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let a = 1;
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assert_ser_tokens(
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&SkipSerializingStruct {
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a: &a,
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b: 2,
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c: 3,
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},
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&[
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Token::Struct("SkipSerializingStruct", 2),
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Token::Str("a"),
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Token::I8(1),
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Token::Str("c"),
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Token::I32(3),
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Token::StructEnd,
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]
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);
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assert_ser_tokens(
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&SkipSerializingStruct {
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a: &a,
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b: 2,
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c: 123,
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},
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&[
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Token::Struct("SkipSerializingStruct", 1),
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Token::Str("a"),
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Token::I8(1),
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Token::StructEnd,
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]
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);
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}
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#[derive(Debug, PartialEq, Serialize)]
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enum SkipSerializingEnum<'a, B, C> where C: ShouldSkip {
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Struct {
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a: &'a i8,
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#[serde(skip_serializing)]
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_b: B,
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#[serde(skip_serializing_if="ShouldSkip::should_skip")]
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c: C,
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}
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}
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|
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#[test]
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fn test_skip_serializing_enum() {
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let a = 1;
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assert_ser_tokens(
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&SkipSerializingEnum::Struct {
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a: &a,
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_b: 2,
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c: 3,
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},
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&[
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Token::StructVariant("SkipSerializingEnum", "Struct", 2),
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Token::Str("a"),
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Token::I8(1),
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Token::Str("c"),
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Token::I32(3),
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Token::StructVariantEnd,
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]
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);
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assert_ser_tokens(
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&SkipSerializingEnum::Struct {
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a: &a,
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_b: 2,
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c: 123,
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},
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&[
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Token::StructVariant("SkipSerializingEnum", "Struct", 1),
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Token::Str("a"),
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Token::I8(1),
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Token::StructVariantEnd,
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]
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);
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}
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|
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#[derive(Debug, PartialEq)]
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struct NotSerializeStruct(i8);
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|
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#[derive(Debug, PartialEq)]
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enum NotSerializeEnum { Trouble }
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|
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impl SerializeWith for NotSerializeEnum {
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fn serialize_with<S>(&self, ser: S) -> Result<S::Ok, S::Error>
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|
where S: Serializer
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{
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"trouble".serialize(ser)
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}
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}
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#[derive(Debug, PartialEq, Serialize)]
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|
struct ContainsNotSerialize<'a, B, C, D> where B: 'a, D: SerializeWith {
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a: &'a Option<i8>,
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#[serde(skip_serializing)]
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|
b: &'a B,
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|
#[serde(skip_serializing)]
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c: Option<C>,
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#[serde(serialize_with="SerializeWith::serialize_with")]
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d: D,
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}
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|
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#[test]
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fn test_elt_not_serialize() {
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let a = 1;
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assert_ser_tokens(
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&ContainsNotSerialize {
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a: &Some(a),
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b: &NotSerializeStruct(2),
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c: Some(NotSerializeEnum::Trouble),
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d: NotSerializeEnum::Trouble,
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},
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&[
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Token::Struct("ContainsNotSerialize", 2),
|
|
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Token::Str("a"),
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Token::Some,
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Token::I8(1),
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Token::Str("d"),
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Token::Str("trouble"),
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|
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Token::StructEnd,
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]
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);
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}
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|
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|
#[derive(Debug, PartialEq, Serialize)]
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struct SerializeWithStruct<'a, B> where B: SerializeWith {
|
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a: &'a i8,
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#[serde(serialize_with="SerializeWith::serialize_with")]
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b: B,
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}
|
|
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#[test]
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fn test_serialize_with_struct() {
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let a = 1;
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assert_ser_tokens(
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&SerializeWithStruct {
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a: &a,
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b: 2,
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|
},
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&[
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|
Token::Struct("SerializeWithStruct", 2),
|
|
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|
Token::Str("a"),
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|
Token::I8(1),
|
|
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|
Token::Str("b"),
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|
Token::Bool(false),
|
|
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|
Token::StructEnd,
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|
]
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|
);
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|
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assert_ser_tokens(
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&SerializeWithStruct {
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a: &a,
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b: 123,
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},
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&[
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Token::Struct("SerializeWithStruct", 2),
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|
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|
Token::Str("a"),
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|
Token::I8(1),
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|
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|
Token::Str("b"),
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Token::Bool(true),
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|
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|
Token::StructEnd,
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]
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);
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}
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|
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|
#[derive(Debug, PartialEq, Serialize)]
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|
enum SerializeWithEnum<'a, B> where B: SerializeWith {
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|
Struct {
|
|
a: &'a i8,
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|
#[serde(serialize_with="SerializeWith::serialize_with")]
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|
b: B,
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|
}
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|
}
|
|
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#[test]
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fn test_serialize_with_enum() {
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let a = 1;
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assert_ser_tokens(
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&SerializeWithEnum::Struct {
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a: &a,
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b: 2,
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},
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&[
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Token::StructVariant("SerializeWithEnum", "Struct", 2),
|
|
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|
Token::Str("a"),
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Token::I8(1),
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|
Token::Str("b"),
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Token::Bool(false),
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|
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|
Token::StructVariantEnd,
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]
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);
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|
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assert_ser_tokens(
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&SerializeWithEnum::Struct {
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a: &a,
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b: 123,
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},
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&[
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Token::StructVariant("SerializeWithEnum", "Struct", 2),
|
|
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|
Token::Str("a"),
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|
Token::I8(1),
|
|
|
|
Token::Str("b"),
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|
Token::Bool(true),
|
|
|
|
Token::StructVariantEnd,
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|
]
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|
);
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|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
struct DeserializeWithStruct<B> where B: DeserializeWith {
|
|
a: i8,
|
|
#[serde(deserialize_with="DeserializeWith::deserialize_with")]
|
|
b: B,
|
|
}
|
|
|
|
#[test]
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|
fn test_deserialize_with_struct() {
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|
assert_de_tokens(
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|
&DeserializeWithStruct {
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|
a: 1,
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|
b: 2,
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|
},
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|
&[
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|
Token::Struct("DeserializeWithStruct", 2),
|
|
|
|
Token::Str("a"),
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|
Token::I8(1),
|
|
|
|
Token::Str("b"),
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|
Token::Bool(false),
|
|
|
|
Token::StructEnd,
|
|
]
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|
);
|
|
|
|
assert_de_tokens(
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|
&DeserializeWithStruct {
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|
a: 1,
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|
b: 123,
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|
},
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|
&[
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|
Token::Struct("DeserializeWithStruct", 2),
|
|
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
|
|
Token::Str("b"),
|
|
Token::Bool(true),
|
|
|
|
Token::StructEnd,
|
|
]
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
enum DeserializeWithEnum<B> where B: DeserializeWith {
|
|
Struct {
|
|
a: i8,
|
|
#[serde(deserialize_with="DeserializeWith::deserialize_with")]
|
|
b: B,
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_deserialize_with_enum() {
|
|
assert_de_tokens(
|
|
&DeserializeWithEnum::Struct {
|
|
a: 1,
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|
b: 2,
|
|
},
|
|
&[
|
|
Token::StructVariant("DeserializeWithEnum", "Struct", 2),
|
|
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
|
|
Token::Str("b"),
|
|
Token::Bool(false),
|
|
|
|
Token::StructVariantEnd,
|
|
]
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&DeserializeWithEnum::Struct {
|
|
a: 1,
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|
b: 123,
|
|
},
|
|
&[
|
|
Token::StructVariant("DeserializeWithEnum", "Struct", 2),
|
|
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
|
|
Token::Str("b"),
|
|
Token::Bool(true),
|
|
|
|
Token::StructVariantEnd,
|
|
]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_missing_renamed_field_struct() {
|
|
assert_de_tokens_error::<RenameStruct>(
|
|
&[
|
|
Token::Struct("Superhero", 2),
|
|
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
|
|
Token::StructEnd,
|
|
],
|
|
Error::Message("missing field `a3`".to_owned()),
|
|
);
|
|
|
|
assert_de_tokens_error::<RenameStructSerializeDeserialize>(
|
|
&[
|
|
Token::Struct("SuperheroDe", 2),
|
|
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
|
|
Token::StructEnd,
|
|
],
|
|
Error::Message("missing field `a5`".to_owned()),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_missing_renamed_field_enum() {
|
|
assert_de_tokens_error::<RenameEnum>(
|
|
&[
|
|
Token::StructVariant("Superhero", "barry_allan", 1),
|
|
|
|
Token::StructVariantEnd,
|
|
],
|
|
Error::Message("missing field `b`".to_owned()),
|
|
);
|
|
|
|
assert_de_tokens_error::<RenameEnumSerializeDeserialize<i8>>(
|
|
&[
|
|
Token::StructVariant("SuperheroDe", "jason_todd", 2),
|
|
|
|
Token::Str("a"),
|
|
Token::I8(0),
|
|
|
|
Token::StructVariantEnd,
|
|
],
|
|
Error::Message("missing field `d`".to_owned()),
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
enum InvalidLengthEnum {
|
|
A(i32, i32, i32),
|
|
B(#[serde(skip_deserializing)] i32, i32, i32),
|
|
}
|
|
|
|
#[test]
|
|
fn test_invalid_length_enum() {
|
|
assert_de_tokens_error::<InvalidLengthEnum>(
|
|
&[
|
|
Token::TupleVariant("InvalidLengthEnum", "A", 3),
|
|
Token::I32(1),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
Error::Message("invalid length 1, expected tuple of 3 elements".to_owned()),
|
|
);
|
|
assert_de_tokens_error::<InvalidLengthEnum>(
|
|
&[
|
|
Token::TupleVariant("InvalidLengthEnum", "B", 3),
|
|
Token::I32(1),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
Error::Message("invalid length 1, expected tuple of 2 elements".to_owned()),
|
|
);
|
|
}
|
|
|
|
#[derive(Clone, Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(into="EnumToU32", from="EnumToU32")]
|
|
struct StructFromEnum(Option<u32>);
|
|
|
|
impl Into<EnumToU32> for StructFromEnum {
|
|
fn into(self) -> EnumToU32 {
|
|
match self {
|
|
StructFromEnum(v) => v.into()
|
|
}
|
|
}
|
|
}
|
|
|
|
impl From<EnumToU32> for StructFromEnum {
|
|
fn from(v: EnumToU32) -> Self {
|
|
StructFromEnum(v.into())
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(into="Option<u32>", from="Option<u32>")]
|
|
enum EnumToU32 {
|
|
One,
|
|
Two,
|
|
Three,
|
|
Four,
|
|
Nothing
|
|
}
|
|
|
|
impl Into<Option<u32>> for EnumToU32 {
|
|
fn into(self) -> Option<u32> {
|
|
match self {
|
|
EnumToU32::One => Some(1),
|
|
EnumToU32::Two => Some(2),
|
|
EnumToU32::Three => Some(3),
|
|
EnumToU32::Four => Some(4),
|
|
EnumToU32::Nothing => None
|
|
}
|
|
}
|
|
}
|
|
|
|
impl From<Option<u32>> for EnumToU32 {
|
|
fn from(v: Option<u32>) -> Self {
|
|
match v {
|
|
Some(1) => EnumToU32::One,
|
|
Some(2) => EnumToU32::Two,
|
|
Some(3) => EnumToU32::Three,
|
|
Some(4) => EnumToU32::Four,
|
|
_ => EnumToU32::Nothing
|
|
}
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_from_into_traits() {
|
|
assert_ser_tokens::<EnumToU32>(&EnumToU32::One,
|
|
&[Token::Some,
|
|
Token::U32(1)
|
|
]
|
|
);
|
|
assert_ser_tokens::<EnumToU32>(&EnumToU32::Nothing,
|
|
&[Token::None]
|
|
);
|
|
assert_de_tokens::<EnumToU32>(&EnumToU32::Two,
|
|
&[Token::Some,
|
|
Token::U32(2)
|
|
]
|
|
);
|
|
assert_ser_tokens::<StructFromEnum>(&StructFromEnum(Some(5)),
|
|
&[Token::None]
|
|
);
|
|
assert_ser_tokens::<StructFromEnum>(&StructFromEnum(None),
|
|
&[Token::None]
|
|
);
|
|
assert_de_tokens::<StructFromEnum>(&StructFromEnum(Some(2)),
|
|
&[Token::Some,
|
|
Token::U32(2)
|
|
]
|
|
);
|
|
}
|