3315 lines
82 KiB
Rust
3315 lines
82 KiB
Rust
#![allow(
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clippy::cast_lossless,
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clippy::derive_partial_eq_without_eq,
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clippy::from_over_into,
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// Clippy bug: https://github.com/rust-lang/rust-clippy/issues/7422
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clippy::nonstandard_macro_braces,
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clippy::too_many_lines,
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clippy::trivially_copy_pass_by_ref,
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clippy::type_repetition_in_bounds,
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clippy::uninlined_format_args,
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)]
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use serde::de::{self, Deserialize, Deserializer, IgnoredAny, MapAccess, Unexpected, Visitor};
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use serde::ser::{Serialize, Serializer};
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use serde_derive::{Deserialize, Serialize};
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use serde_test::{
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assert_de_tokens, assert_de_tokens_error, assert_ser_tokens, assert_ser_tokens_error,
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assert_tokens, Token,
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};
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use std::collections::{BTreeMap, HashMap};
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use std::convert::TryFrom;
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use std::fmt;
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use std::marker::PhantomData;
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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
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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
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D: Deserializer<'de>;
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}
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impl MyDefault for i32 {
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fn my_default() -> Self {
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123
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}
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}
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impl ShouldSkip for i32 {
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fn should_skip(&self) -> bool {
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*self == 123
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}
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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
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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
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D: Deserializer<'de>,
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{
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if 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
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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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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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struct DefaultTupleStruct<A, B, C>(
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A,
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#[serde(default)] B,
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#[serde(default = "MyDefault::my_default")] C,
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)
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where
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C: MyDefault;
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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struct CollectOther {
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a: u32,
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b: u32,
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#[serde(flatten)]
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extra: HashMap<String, u32>,
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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 {
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a1: 1,
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a2: 2,
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a3: 3,
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a4: 0,
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a5: 123,
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},
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&[
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Token::Struct {
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name: "DefaultStruct",
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len: 3,
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},
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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 {
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a1: 1,
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a2: 0,
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a3: 123,
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a4: 0,
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a5: 123,
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},
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&[
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Token::Struct {
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name: "DefaultStruct",
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len: 3,
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},
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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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#[test]
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fn test_default_tuple() {
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assert_de_tokens(
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&DefaultTupleStruct(1, 2, 3),
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&[
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Token::TupleStruct {
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name: "DefaultTupleStruct",
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len: 3,
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},
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Token::I32(1),
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Token::I32(2),
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Token::I32(3),
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Token::TupleStructEnd,
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],
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);
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assert_de_tokens(
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&DefaultTupleStruct(1, 0, 123),
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&[
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Token::TupleStruct {
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name: "DefaultTupleStruct",
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len: 3,
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},
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Token::I32(1),
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Token::TupleStructEnd,
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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 DefaultStructVariant<A, B, C, D, E>
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where
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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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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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enum DefaultTupleVariant<A, B, C>
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where
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C: MyDefault,
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{
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Tuple(
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A,
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#[serde(default)] B,
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#[serde(default = "MyDefault::my_default")] C,
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),
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}
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#[test]
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fn test_default_struct_variant() {
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assert_de_tokens(
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&DefaultStructVariant::Struct {
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a1: 1,
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a2: 2,
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a3: 3,
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a4: 0,
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a5: 123,
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},
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&[
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Token::StructVariant {
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name: "DefaultStructVariant",
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variant: "Struct",
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len: 3,
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},
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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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&DefaultStructVariant::Struct {
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a1: 1,
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a2: 0,
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a3: 123,
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a4: 0,
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a5: 123,
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},
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&[
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Token::StructVariant {
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name: "DefaultStructVariant",
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variant: "Struct",
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len: 3,
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},
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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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#[test]
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fn test_default_tuple_variant() {
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assert_de_tokens(
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&DefaultTupleVariant::Tuple(1, 2, 3),
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&[
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Token::TupleVariant {
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name: "DefaultTupleVariant",
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variant: "Tuple",
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len: 3,
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},
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Token::I32(1),
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Token::I32(2),
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Token::I32(3),
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Token::TupleVariantEnd,
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],
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);
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assert_de_tokens(
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&DefaultTupleVariant::Tuple(1, 0, 123),
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&[
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Token::TupleVariant {
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name: "DefaultTupleVariant",
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variant: "Tuple",
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len: 3,
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},
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Token::I32(1),
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Token::TupleVariantEnd,
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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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}
|
|
|
|
// Tests that a struct field does not need to implement std::default::Default if
|
|
// 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 {
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a: NoStdDefault(123),
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},
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|
&[
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|
Token::Struct {
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|
name: "ContainsNoStdDefault",
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len: 1,
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},
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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 {
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name: "ContainsNoStdDefault",
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|
len: 1,
|
|
},
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|
Token::Str("a"),
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|
Token::NewtypeStruct {
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name: "NoStdDefault",
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|
},
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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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}
|
|
|
|
// 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 {
|
|
fn default() -> Self {
|
|
NotDeserializeStruct(123)
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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>
|
|
where
|
|
D: Deserializer<'de>,
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|
{
|
|
panic!()
|
|
}
|
|
}
|
|
|
|
// Does not implement Deserialize.
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|
#[derive(Debug, PartialEq)]
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|
enum NotDeserializeEnum {
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|
Trouble,
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|
}
|
|
|
|
impl MyDefault for NotDeserializeEnum {
|
|
fn my_default() -> Self {
|
|
NotDeserializeEnum::Trouble
|
|
}
|
|
}
|
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|
|
#[derive(Debug, PartialEq, Deserialize)]
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|
struct ContainsNotDeserialize<A, B, C: DeserializeWith, E: MyDefault> {
|
|
#[serde(skip_deserializing)]
|
|
a: A,
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|
#[serde(skip_deserializing, default)]
|
|
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")]
|
|
e: E,
|
|
}
|
|
|
|
// Tests that a struct field does not need to implement Deserialize if it is
|
|
// annotated with skip_deserializing, whether using the std Default or a
|
|
// custom default.
|
|
#[test]
|
|
fn test_elt_not_deserialize() {
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|
assert_de_tokens(
|
|
&ContainsNotDeserialize {
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a: NotDeserializeStruct(123),
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|
b: NotDeserializeStruct(123),
|
|
c: NotDeserializeStruct(123),
|
|
e: NotDeserializeEnum::Trouble,
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|
},
|
|
&[
|
|
Token::Struct {
|
|
name: "ContainsNotDeserialize",
|
|
len: 1,
|
|
},
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
#[serde(deny_unknown_fields)]
|
|
struct DenyUnknown {
|
|
a1: i32,
|
|
}
|
|
|
|
#[test]
|
|
fn test_ignore_unknown() {
|
|
// 'Default' allows unknown. Basic smoke test of ignore...
|
|
assert_de_tokens(
|
|
&DefaultStruct {
|
|
a1: 1,
|
|
a2: 2,
|
|
a3: 3,
|
|
a4: 0,
|
|
a5: 123,
|
|
},
|
|
&[
|
|
Token::Struct {
|
|
name: "DefaultStruct",
|
|
len: 3,
|
|
},
|
|
Token::Str("whoops1"),
|
|
Token::I32(2),
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("whoops2"),
|
|
Token::Seq { len: Some(1) },
|
|
Token::I32(2),
|
|
Token::SeqEnd,
|
|
Token::Str("a2"),
|
|
Token::I32(2),
|
|
Token::Str("whoops3"),
|
|
Token::I32(2),
|
|
Token::Str("a3"),
|
|
Token::I32(3),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens_error::<DenyUnknown>(
|
|
&[
|
|
Token::Struct {
|
|
name: "DenyUnknown",
|
|
len: 1,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("whoops"),
|
|
],
|
|
"unknown field `whoops`, expected `a1`",
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
#[serde(rename = "Superhero")]
|
|
struct RenameStruct {
|
|
a1: i32,
|
|
#[serde(rename = "a3")]
|
|
a2: i32,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
#[serde(rename(serialize = "SuperheroSer", deserialize = "SuperheroDe"))]
|
|
struct RenameStructSerializeDeserialize {
|
|
a1: i32,
|
|
#[serde(rename(serialize = "a4", deserialize = "a5"))]
|
|
a2: i32,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
#[serde(deny_unknown_fields)]
|
|
struct AliasStruct {
|
|
a1: i32,
|
|
#[serde(alias = "a3")]
|
|
a2: i32,
|
|
#[serde(alias = "a5", rename = "a6")]
|
|
a4: i32,
|
|
}
|
|
|
|
#[test]
|
|
fn test_rename_struct() {
|
|
assert_tokens(
|
|
&RenameStruct { a1: 1, a2: 2 },
|
|
&[
|
|
Token::Struct {
|
|
name: "Superhero",
|
|
len: 2,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("a3"),
|
|
Token::I32(2),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&RenameStructSerializeDeserialize { a1: 1, a2: 2 },
|
|
&[
|
|
Token::Struct {
|
|
name: "SuperheroSer",
|
|
len: 2,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("a4"),
|
|
Token::I32(2),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&RenameStructSerializeDeserialize { a1: 1, a2: 2 },
|
|
&[
|
|
Token::Struct {
|
|
name: "SuperheroDe",
|
|
len: 2,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("a5"),
|
|
Token::I32(2),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&AliasStruct {
|
|
a1: 1,
|
|
a2: 2,
|
|
a4: 3,
|
|
},
|
|
&[
|
|
Token::Struct {
|
|
name: "AliasStruct",
|
|
len: 3,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("a2"),
|
|
Token::I32(2),
|
|
Token::Str("a5"),
|
|
Token::I32(3),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&AliasStruct {
|
|
a1: 1,
|
|
a2: 2,
|
|
a4: 3,
|
|
},
|
|
&[
|
|
Token::Struct {
|
|
name: "AliasStruct",
|
|
len: 3,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("a3"),
|
|
Token::I32(2),
|
|
Token::Str("a6"),
|
|
Token::I32(3),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_unknown_field_rename_struct() {
|
|
assert_de_tokens_error::<AliasStruct>(
|
|
&[
|
|
Token::Struct {
|
|
name: "AliasStruct",
|
|
len: 3,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("a3"),
|
|
Token::I32(2),
|
|
Token::Str("a4"),
|
|
Token::I32(3),
|
|
],
|
|
"unknown field `a4`, expected one of `a1`, `a2`, `a3`, `a5`, `a6`",
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
#[serde(rename = "Superhero")]
|
|
enum RenameEnum {
|
|
#[serde(rename = "bruce_wayne")]
|
|
Batman,
|
|
#[serde(rename = "clark_kent")]
|
|
Superman(i8),
|
|
#[serde(rename = "diana_prince")]
|
|
WonderWoman(i8, i8),
|
|
#[serde(rename = "barry_allan")]
|
|
Flash {
|
|
#[serde(rename = "b")]
|
|
a: i32,
|
|
},
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize, Serialize)]
|
|
#[serde(rename(serialize = "SuperheroSer", deserialize = "SuperheroDe"))]
|
|
enum RenameEnumSerializeDeserialize<A> {
|
|
#[serde(rename(serialize = "dick_grayson", deserialize = "jason_todd"))]
|
|
Robin {
|
|
a: i8,
|
|
#[serde(rename(serialize = "c"))]
|
|
#[serde(rename(deserialize = "d"))]
|
|
b: A,
|
|
},
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
#[serde(deny_unknown_fields)]
|
|
enum AliasEnum {
|
|
#[serde(rename = "sailor_moon", alias = "usagi_tsukino")]
|
|
SailorMoon {
|
|
a: i8,
|
|
#[serde(alias = "c")]
|
|
b: i8,
|
|
#[serde(alias = "e", rename = "f")]
|
|
d: i8,
|
|
},
|
|
}
|
|
|
|
#[test]
|
|
fn test_rename_enum() {
|
|
assert_tokens(
|
|
&RenameEnum::Batman,
|
|
&[Token::UnitVariant {
|
|
name: "Superhero",
|
|
variant: "bruce_wayne",
|
|
}],
|
|
);
|
|
|
|
assert_tokens(
|
|
&RenameEnum::Superman(0),
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "Superhero",
|
|
variant: "clark_kent",
|
|
},
|
|
Token::I8(0),
|
|
],
|
|
);
|
|
|
|
assert_tokens(
|
|
&RenameEnum::WonderWoman(0, 1),
|
|
&[
|
|
Token::TupleVariant {
|
|
name: "Superhero",
|
|
variant: "diana_prince",
|
|
len: 2,
|
|
},
|
|
Token::I8(0),
|
|
Token::I8(1),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_tokens(
|
|
&RenameEnum::Flash { a: 1 },
|
|
&[
|
|
Token::StructVariant {
|
|
name: "Superhero",
|
|
variant: "barry_allan",
|
|
len: 1,
|
|
},
|
|
Token::Str("b"),
|
|
Token::I32(1),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&RenameEnumSerializeDeserialize::Robin {
|
|
a: 0,
|
|
b: String::new(),
|
|
},
|
|
&[
|
|
Token::StructVariant {
|
|
name: "SuperheroSer",
|
|
variant: "dick_grayson",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(0),
|
|
Token::Str("c"),
|
|
Token::Str(""),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&RenameEnumSerializeDeserialize::Robin {
|
|
a: 0,
|
|
b: String::new(),
|
|
},
|
|
&[
|
|
Token::StructVariant {
|
|
name: "SuperheroDe",
|
|
variant: "jason_todd",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(0),
|
|
Token::Str("d"),
|
|
Token::Str(""),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&AliasEnum::SailorMoon { a: 0, b: 1, d: 2 },
|
|
&[
|
|
Token::StructVariant {
|
|
name: "AliasEnum",
|
|
variant: "sailor_moon",
|
|
len: 5,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(0),
|
|
Token::Str("b"),
|
|
Token::I8(1),
|
|
Token::Str("e"),
|
|
Token::I8(2),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&AliasEnum::SailorMoon { a: 0, b: 1, d: 2 },
|
|
&[
|
|
Token::StructVariant {
|
|
name: "AliasEnum",
|
|
variant: "usagi_tsukino",
|
|
len: 5,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(0),
|
|
Token::Str("c"),
|
|
Token::I8(1),
|
|
Token::Str("f"),
|
|
Token::I8(2),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_unknown_field_rename_enum() {
|
|
assert_de_tokens_error::<AliasEnum>(
|
|
&[Token::StructVariant {
|
|
name: "AliasEnum",
|
|
variant: "SailorMoon",
|
|
len: 3,
|
|
}],
|
|
"unknown variant `SailorMoon`, expected `sailor_moon`",
|
|
);
|
|
|
|
assert_de_tokens_error::<AliasEnum>(
|
|
&[
|
|
Token::StructVariant {
|
|
name: "AliasEnum",
|
|
variant: "usagi_tsukino",
|
|
len: 5,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(0),
|
|
Token::Str("c"),
|
|
Token::I8(1),
|
|
Token::Str("d"),
|
|
Token::I8(2),
|
|
],
|
|
"unknown field `d`, expected one of `a`, `b`, `c`, `e`, `f`",
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize)]
|
|
struct SkipSerializingStruct<'a, B, C>
|
|
where
|
|
C: ShouldSkip,
|
|
{
|
|
a: &'a i8,
|
|
#[serde(skip_serializing)]
|
|
b: B,
|
|
#[serde(skip_serializing_if = "ShouldSkip::should_skip")]
|
|
c: C,
|
|
}
|
|
|
|
#[test]
|
|
fn test_skip_serializing_struct() {
|
|
let a = 1;
|
|
assert_ser_tokens(
|
|
&SkipSerializingStruct { a: &a, b: 2, c: 3 },
|
|
&[
|
|
Token::Struct {
|
|
name: "SkipSerializingStruct",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::Str("c"),
|
|
Token::I32(3),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&SkipSerializingStruct {
|
|
a: &a,
|
|
b: 2,
|
|
c: 123,
|
|
},
|
|
&[
|
|
Token::Struct {
|
|
name: "SkipSerializingStruct",
|
|
len: 1,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize)]
|
|
struct SkipSerializingTupleStruct<'a, B, C>(
|
|
&'a i8,
|
|
#[serde(skip_serializing)] B,
|
|
#[serde(skip_serializing_if = "ShouldSkip::should_skip")] C,
|
|
)
|
|
where
|
|
C: ShouldSkip;
|
|
|
|
#[test]
|
|
fn test_skip_serializing_tuple_struct() {
|
|
let a = 1;
|
|
assert_ser_tokens(
|
|
&SkipSerializingTupleStruct(&a, 2, 3),
|
|
&[
|
|
Token::TupleStruct {
|
|
name: "SkipSerializingTupleStruct",
|
|
len: 2,
|
|
},
|
|
Token::I8(1),
|
|
Token::I32(3),
|
|
Token::TupleStructEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&SkipSerializingTupleStruct(&a, 2, 123),
|
|
&[
|
|
Token::TupleStruct {
|
|
name: "SkipSerializingTupleStruct",
|
|
len: 1,
|
|
},
|
|
Token::I8(1),
|
|
Token::TupleStructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct SkipStruct<B> {
|
|
a: i8,
|
|
#[serde(skip)]
|
|
b: B,
|
|
}
|
|
|
|
#[test]
|
|
fn test_skip_struct() {
|
|
assert_ser_tokens(
|
|
&SkipStruct { a: 1, b: 2 },
|
|
&[
|
|
Token::Struct {
|
|
name: "SkipStruct",
|
|
len: 1,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&SkipStruct { a: 1, b: 0 },
|
|
&[
|
|
Token::Struct {
|
|
name: "SkipStruct",
|
|
len: 1,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize)]
|
|
enum SkipSerializingEnum<'a, B, C>
|
|
where
|
|
C: ShouldSkip,
|
|
{
|
|
Struct {
|
|
a: &'a i8,
|
|
#[serde(skip_serializing)]
|
|
_b: B,
|
|
#[serde(skip_serializing_if = "ShouldSkip::should_skip")]
|
|
c: C,
|
|
},
|
|
Tuple(
|
|
&'a i8,
|
|
#[serde(skip_serializing)] B,
|
|
#[serde(skip_serializing_if = "ShouldSkip::should_skip")] C,
|
|
),
|
|
}
|
|
|
|
#[test]
|
|
fn test_skip_serializing_enum() {
|
|
let a = 1;
|
|
assert_ser_tokens(
|
|
&SkipSerializingEnum::Struct { a: &a, _b: 2, c: 3 },
|
|
&[
|
|
Token::StructVariant {
|
|
name: "SkipSerializingEnum",
|
|
variant: "Struct",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::Str("c"),
|
|
Token::I32(3),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&SkipSerializingEnum::Struct {
|
|
a: &a,
|
|
_b: 2,
|
|
c: 123,
|
|
},
|
|
&[
|
|
Token::StructVariant {
|
|
name: "SkipSerializingEnum",
|
|
variant: "Struct",
|
|
len: 1,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&SkipSerializingEnum::Tuple(&a, 2, 3),
|
|
&[
|
|
Token::TupleVariant {
|
|
name: "SkipSerializingEnum",
|
|
variant: "Tuple",
|
|
len: 2,
|
|
},
|
|
Token::I8(1),
|
|
Token::I32(3),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&SkipSerializingEnum::Tuple(&a, 2, 123),
|
|
&[
|
|
Token::TupleVariant {
|
|
name: "SkipSerializingEnum",
|
|
variant: "Tuple",
|
|
len: 1,
|
|
},
|
|
Token::I8(1),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq)]
|
|
struct NotSerializeStruct(i8);
|
|
|
|
#[derive(Debug, PartialEq)]
|
|
enum NotSerializeEnum {
|
|
Trouble,
|
|
}
|
|
|
|
impl SerializeWith for NotSerializeEnum {
|
|
fn serialize_with<S>(&self, ser: S) -> Result<S::Ok, S::Error>
|
|
where
|
|
S: Serializer,
|
|
{
|
|
"trouble".serialize(ser)
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize)]
|
|
struct ContainsNotSerialize<'a, B, C, D>
|
|
where
|
|
B: 'a,
|
|
D: SerializeWith,
|
|
{
|
|
a: &'a Option<i8>,
|
|
#[serde(skip_serializing)]
|
|
b: &'a B,
|
|
#[serde(skip_serializing)]
|
|
c: Option<C>,
|
|
#[serde(serialize_with = "SerializeWith::serialize_with")]
|
|
d: D,
|
|
}
|
|
|
|
#[test]
|
|
fn test_elt_not_serialize() {
|
|
let a = 1;
|
|
assert_ser_tokens(
|
|
&ContainsNotSerialize {
|
|
a: &Some(a),
|
|
b: &NotSerializeStruct(2),
|
|
c: Some(NotSerializeEnum::Trouble),
|
|
d: NotSerializeEnum::Trouble,
|
|
},
|
|
&[
|
|
Token::Struct {
|
|
name: "ContainsNotSerialize",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::Some,
|
|
Token::I8(1),
|
|
Token::Str("d"),
|
|
Token::Str("trouble"),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize)]
|
|
struct SerializeWithStruct<'a, B>
|
|
where
|
|
B: SerializeWith,
|
|
{
|
|
a: &'a i8,
|
|
#[serde(serialize_with = "SerializeWith::serialize_with")]
|
|
b: B,
|
|
}
|
|
|
|
#[test]
|
|
fn test_serialize_with_struct() {
|
|
let a = 1;
|
|
assert_ser_tokens(
|
|
&SerializeWithStruct { a: &a, b: 2 },
|
|
&[
|
|
Token::Struct {
|
|
name: "SerializeWithStruct",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::Str("b"),
|
|
Token::Bool(false),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&SerializeWithStruct { a: &a, b: 123 },
|
|
&[
|
|
Token::Struct {
|
|
name: "SerializeWithStruct",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::Str("b"),
|
|
Token::Bool(true),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize)]
|
|
enum SerializeWithEnum<'a, B>
|
|
where
|
|
B: SerializeWith,
|
|
{
|
|
Struct {
|
|
a: &'a i8,
|
|
#[serde(serialize_with = "SerializeWith::serialize_with")]
|
|
b: B,
|
|
},
|
|
}
|
|
|
|
#[test]
|
|
fn test_serialize_with_enum() {
|
|
let a = 1;
|
|
assert_ser_tokens(
|
|
&SerializeWithEnum::Struct { a: &a, b: 2 },
|
|
&[
|
|
Token::StructVariant {
|
|
name: "SerializeWithEnum",
|
|
variant: "Struct",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::Str("b"),
|
|
Token::Bool(false),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&SerializeWithEnum::Struct { a: &a, b: 123 },
|
|
&[
|
|
Token::StructVariant {
|
|
name: "SerializeWithEnum",
|
|
variant: "Struct",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::Str("b"),
|
|
Token::Bool(true),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
enum WithVariant {
|
|
#[serde(serialize_with = "serialize_unit_variant_as_i8")]
|
|
#[serde(deserialize_with = "deserialize_i8_as_unit_variant")]
|
|
Unit,
|
|
|
|
#[serde(serialize_with = "SerializeWith::serialize_with")]
|
|
#[serde(deserialize_with = "DeserializeWith::deserialize_with")]
|
|
Newtype(i32),
|
|
|
|
#[serde(serialize_with = "serialize_variant_as_string")]
|
|
#[serde(deserialize_with = "deserialize_string_as_variant")]
|
|
Tuple(String, u8),
|
|
|
|
#[serde(serialize_with = "serialize_variant_as_string")]
|
|
#[serde(deserialize_with = "deserialize_string_as_variant")]
|
|
Struct { f1: String, f2: u8 },
|
|
}
|
|
|
|
fn serialize_unit_variant_as_i8<S>(serializer: S) -> Result<S::Ok, S::Error>
|
|
where
|
|
S: Serializer,
|
|
{
|
|
serializer.serialize_i8(0)
|
|
}
|
|
|
|
fn deserialize_i8_as_unit_variant<'de, D>(deserializer: D) -> Result<(), D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
let n = i8::deserialize(deserializer)?;
|
|
match n {
|
|
0 => Ok(()),
|
|
_ => Err(de::Error::invalid_value(Unexpected::Signed(n as i64), &"0")),
|
|
}
|
|
}
|
|
|
|
fn serialize_variant_as_string<S>(f1: &str, f2: &u8, serializer: S) -> Result<S::Ok, S::Error>
|
|
where
|
|
S: Serializer,
|
|
{
|
|
serializer.collect_str(&format_args!("{};{:?}", f1, f2))
|
|
}
|
|
|
|
fn deserialize_string_as_variant<'de, D>(deserializer: D) -> Result<(String, u8), D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
let s = String::deserialize(deserializer)?;
|
|
let mut pieces = s.split(';');
|
|
let Some(f1) = pieces.next() else {
|
|
return Err(de::Error::invalid_length(0, &"2"));
|
|
};
|
|
let Some(f2) = pieces.next() else {
|
|
return Err(de::Error::invalid_length(1, &"2"));
|
|
};
|
|
let Ok(f2) = f2.parse() else {
|
|
return Err(de::Error::invalid_value(
|
|
Unexpected::Str(f2),
|
|
&"an 8-bit signed integer",
|
|
));
|
|
};
|
|
Ok((f1.into(), f2))
|
|
}
|
|
|
|
#[test]
|
|
fn test_serialize_with_variant() {
|
|
assert_ser_tokens(
|
|
&WithVariant::Unit,
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "WithVariant",
|
|
variant: "Unit",
|
|
},
|
|
Token::I8(0),
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&WithVariant::Newtype(123),
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "WithVariant",
|
|
variant: "Newtype",
|
|
},
|
|
Token::Bool(true),
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&WithVariant::Tuple("hello".into(), 0),
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "WithVariant",
|
|
variant: "Tuple",
|
|
},
|
|
Token::Str("hello;0"),
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&WithVariant::Struct {
|
|
f1: "world".into(),
|
|
f2: 1,
|
|
},
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "WithVariant",
|
|
variant: "Struct",
|
|
},
|
|
Token::Str("world;1"),
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_deserialize_with_variant() {
|
|
assert_de_tokens(
|
|
&WithVariant::Unit,
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "WithVariant",
|
|
variant: "Unit",
|
|
},
|
|
Token::I8(0),
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&WithVariant::Newtype(123),
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "WithVariant",
|
|
variant: "Newtype",
|
|
},
|
|
Token::Bool(true),
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&WithVariant::Tuple("hello".into(), 0),
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "WithVariant",
|
|
variant: "Tuple",
|
|
},
|
|
Token::Str("hello;0"),
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&WithVariant::Struct {
|
|
f1: "world".into(),
|
|
f2: 1,
|
|
},
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "WithVariant",
|
|
variant: "Struct",
|
|
},
|
|
Token::Str("world;1"),
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
struct DeserializeWithStruct<B>
|
|
where
|
|
B: DeserializeWith,
|
|
{
|
|
a: i8,
|
|
#[serde(deserialize_with = "DeserializeWith::deserialize_with")]
|
|
b: B,
|
|
}
|
|
|
|
#[test]
|
|
fn test_deserialize_with_struct() {
|
|
assert_de_tokens(
|
|
&DeserializeWithStruct { a: 1, b: 2 },
|
|
&[
|
|
Token::Struct {
|
|
name: "DeserializeWithStruct",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::Str("b"),
|
|
Token::Bool(false),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&DeserializeWithStruct { a: 1, b: 123 },
|
|
&[
|
|
Token::Struct {
|
|
name: "DeserializeWithStruct",
|
|
len: 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, b: 2 },
|
|
&[
|
|
Token::StructVariant {
|
|
name: "DeserializeWithEnum",
|
|
variant: "Struct",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(1),
|
|
Token::Str("b"),
|
|
Token::Bool(false),
|
|
Token::StructVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&DeserializeWithEnum::Struct { a: 1, b: 123 },
|
|
&[
|
|
Token::StructVariant {
|
|
name: "DeserializeWithEnum",
|
|
variant: "Struct",
|
|
len: 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 {
|
|
name: "Superhero",
|
|
len: 2,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::StructEnd,
|
|
],
|
|
"missing field `a3`",
|
|
);
|
|
|
|
assert_de_tokens_error::<RenameStructSerializeDeserialize>(
|
|
&[
|
|
Token::Struct {
|
|
name: "SuperheroDe",
|
|
len: 2,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::StructEnd,
|
|
],
|
|
"missing field `a5`",
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_missing_renamed_field_enum() {
|
|
assert_de_tokens_error::<RenameEnum>(
|
|
&[
|
|
Token::StructVariant {
|
|
name: "Superhero",
|
|
variant: "barry_allan",
|
|
len: 1,
|
|
},
|
|
Token::StructVariantEnd,
|
|
],
|
|
"missing field `b`",
|
|
);
|
|
|
|
assert_de_tokens_error::<RenameEnumSerializeDeserialize<i8>>(
|
|
&[
|
|
Token::StructVariant {
|
|
name: "SuperheroDe",
|
|
variant: "jason_todd",
|
|
len: 2,
|
|
},
|
|
Token::Str("a"),
|
|
Token::I8(0),
|
|
Token::StructVariantEnd,
|
|
],
|
|
"missing field `d`",
|
|
);
|
|
}
|
|
|
|
#[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 {
|
|
name: "InvalidLengthEnum",
|
|
variant: "A",
|
|
len: 3,
|
|
},
|
|
Token::I32(1),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
"invalid length 1, expected tuple variant InvalidLengthEnum::A with 3 elements",
|
|
);
|
|
assert_de_tokens_error::<InvalidLengthEnum>(
|
|
&[
|
|
Token::TupleVariant {
|
|
name: "InvalidLengthEnum",
|
|
variant: "B",
|
|
len: 2,
|
|
},
|
|
Token::I32(1),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
"invalid length 1, expected tuple variant InvalidLengthEnum::B with 2 elements",
|
|
);
|
|
}
|
|
|
|
#[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,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Deserialize, PartialEq, Debug)]
|
|
#[serde(try_from = "u32")]
|
|
enum TryFromU32 {
|
|
One,
|
|
Two,
|
|
}
|
|
|
|
impl TryFrom<u32> for TryFromU32 {
|
|
type Error = String;
|
|
|
|
fn try_from(value: u32) -> Result<Self, Self::Error> {
|
|
match value {
|
|
1 => Ok(TryFromU32::One),
|
|
2 => Ok(TryFromU32::Two),
|
|
_ => Err("out of range".to_owned()),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_from_into_traits() {
|
|
assert_ser_tokens(&EnumToU32::One, &[Token::Some, Token::U32(1)]);
|
|
assert_ser_tokens(&EnumToU32::Nothing, &[Token::None]);
|
|
assert_de_tokens(&EnumToU32::Two, &[Token::Some, Token::U32(2)]);
|
|
assert_ser_tokens(&StructFromEnum(Some(5)), &[Token::None]);
|
|
assert_ser_tokens(&StructFromEnum(None), &[Token::None]);
|
|
assert_de_tokens(&StructFromEnum(Some(2)), &[Token::Some, Token::U32(2)]);
|
|
assert_de_tokens(&TryFromU32::Two, &[Token::U32(2)]);
|
|
assert_de_tokens_error::<TryFromU32>(&[Token::U32(5)], "out of range");
|
|
}
|
|
|
|
#[test]
|
|
fn test_collect_other() {
|
|
let mut extra = HashMap::new();
|
|
extra.insert("c".into(), 3);
|
|
assert_tokens(
|
|
&CollectOther { a: 1, b: 2, extra },
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("a"),
|
|
Token::U32(1),
|
|
Token::Str("b"),
|
|
Token::U32(2),
|
|
Token::Str("c"),
|
|
Token::U32(3),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_internally_tagged_enum_with_skipped_conflict() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(tag = "t")]
|
|
enum Data {
|
|
A,
|
|
#[serde(skip)]
|
|
#[allow(dead_code)]
|
|
B {
|
|
t: String,
|
|
},
|
|
C {
|
|
#[serde(default, skip)]
|
|
t: String,
|
|
},
|
|
}
|
|
|
|
let data = Data::C { t: String::new() };
|
|
|
|
assert_tokens(
|
|
&data,
|
|
&[
|
|
Token::Struct {
|
|
name: "Data",
|
|
len: 1,
|
|
},
|
|
Token::Str("t"),
|
|
Token::Str("C"),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_internally_tagged_enum_new_type_with_unit() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(tag = "t")]
|
|
enum Data {
|
|
A(()),
|
|
}
|
|
|
|
assert_tokens(
|
|
&Data::A(()),
|
|
&[
|
|
Token::Map { len: Some(1) },
|
|
Token::Str("t"),
|
|
Token::Str("A"),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_adjacently_tagged_enum_bytes() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(tag = "t", content = "c")]
|
|
enum Data {
|
|
A { a: i32 },
|
|
}
|
|
|
|
let data = Data::A { a: 0 };
|
|
|
|
assert_tokens(
|
|
&data,
|
|
&[
|
|
Token::Struct {
|
|
name: "Data",
|
|
len: 2,
|
|
},
|
|
Token::Str("t"),
|
|
Token::UnitVariant {
|
|
name: "Data",
|
|
variant: "A",
|
|
},
|
|
Token::Str("c"),
|
|
Token::Struct { name: "A", len: 1 },
|
|
Token::Str("a"),
|
|
Token::I32(0),
|
|
Token::StructEnd,
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&data,
|
|
&[
|
|
Token::Struct {
|
|
name: "Data",
|
|
len: 2,
|
|
},
|
|
Token::Bytes(b"t"),
|
|
Token::UnitVariant {
|
|
name: "Data",
|
|
variant: "A",
|
|
},
|
|
Token::Bytes(b"c"),
|
|
Token::Struct { name: "A", len: 1 },
|
|
Token::Str("a"),
|
|
Token::I32(0),
|
|
Token::StructEnd,
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_partially_untagged_enum() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
enum Exp {
|
|
Lambda(u32, Box<Exp>),
|
|
#[serde(untagged)]
|
|
App(Box<Exp>, Box<Exp>),
|
|
#[serde(untagged)]
|
|
Var(u32),
|
|
}
|
|
use Exp::*;
|
|
|
|
let data = Lambda(0, Box::new(App(Box::new(Var(0)), Box::new(Var(0)))));
|
|
assert_tokens(
|
|
&data,
|
|
&[
|
|
Token::TupleVariant {
|
|
name: "Exp",
|
|
variant: "Lambda",
|
|
len: 2,
|
|
},
|
|
Token::U32(0),
|
|
Token::Tuple { len: 2 },
|
|
Token::U32(0),
|
|
Token::U32(0),
|
|
Token::TupleEnd,
|
|
Token::TupleVariantEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_partially_untagged_enum_generic() {
|
|
trait Trait<T> {
|
|
type Assoc;
|
|
type Assoc2;
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
enum E<A, B, C>
|
|
where
|
|
A: Trait<C, Assoc2 = B>,
|
|
{
|
|
A(A::Assoc),
|
|
#[serde(untagged)]
|
|
B(A::Assoc2),
|
|
}
|
|
|
|
impl<T> Trait<T> for () {
|
|
type Assoc = T;
|
|
type Assoc2 = bool;
|
|
}
|
|
|
|
type MyE = E<(), bool, u32>;
|
|
use E::*;
|
|
|
|
assert_tokens::<MyE>(&B(true), &[Token::Bool(true)]);
|
|
|
|
assert_tokens::<MyE>(
|
|
&A(5),
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "E",
|
|
variant: "A",
|
|
},
|
|
Token::U32(5),
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_partially_untagged_enum_desugared() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
enum Test {
|
|
A(u32, u32),
|
|
B(u32),
|
|
#[serde(untagged)]
|
|
C(u32),
|
|
#[serde(untagged)]
|
|
D(u32, u32),
|
|
}
|
|
use Test::*;
|
|
|
|
mod desugared {
|
|
use super::*;
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
pub(super) enum Test {
|
|
A(u32, u32),
|
|
B(u32),
|
|
}
|
|
}
|
|
use desugared::Test as TestTagged;
|
|
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(untagged)]
|
|
enum TestUntagged {
|
|
Tagged(TestTagged),
|
|
C(u32),
|
|
D(u32, u32),
|
|
}
|
|
|
|
impl From<Test> for TestUntagged {
|
|
fn from(test: Test) -> Self {
|
|
match test {
|
|
A(x, y) => TestUntagged::Tagged(TestTagged::A(x, y)),
|
|
B(x) => TestUntagged::Tagged(TestTagged::B(x)),
|
|
C(x) => TestUntagged::C(x),
|
|
D(x, y) => TestUntagged::D(x, y),
|
|
}
|
|
}
|
|
}
|
|
|
|
fn assert_tokens_desugared(value: Test, tokens: &[Token]) {
|
|
assert_tokens(&value, tokens);
|
|
let desugared: TestUntagged = value.into();
|
|
assert_tokens(&desugared, tokens);
|
|
}
|
|
|
|
assert_tokens_desugared(
|
|
A(0, 1),
|
|
&[
|
|
Token::TupleVariant {
|
|
name: "Test",
|
|
variant: "A",
|
|
len: 2,
|
|
},
|
|
Token::U32(0),
|
|
Token::U32(1),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
);
|
|
|
|
assert_tokens_desugared(
|
|
B(1),
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "Test",
|
|
variant: "B",
|
|
},
|
|
Token::U32(1),
|
|
],
|
|
);
|
|
|
|
assert_tokens_desugared(C(2), &[Token::U32(2)]);
|
|
|
|
assert_tokens_desugared(
|
|
D(3, 5),
|
|
&[
|
|
Token::Tuple { len: 2 },
|
|
Token::U32(3),
|
|
Token::U32(5),
|
|
Token::TupleEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_partially_untagged_internally_tagged_enum() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(tag = "t")]
|
|
enum Data {
|
|
A,
|
|
B,
|
|
#[serde(untagged)]
|
|
Var(u32),
|
|
}
|
|
|
|
let data = Data::A;
|
|
|
|
assert_de_tokens(
|
|
&data,
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("t"),
|
|
Token::Str("A"),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
let data = Data::Var(42);
|
|
|
|
assert_de_tokens(&data, &[Token::U32(42)]);
|
|
|
|
// TODO test error output
|
|
}
|
|
|
|
#[test]
|
|
fn test_partially_untagged_adjacently_tagged_enum() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(tag = "t", content = "c")]
|
|
enum Data {
|
|
A(u32),
|
|
B,
|
|
#[serde(untagged)]
|
|
Var(u32),
|
|
}
|
|
|
|
let data = Data::A(7);
|
|
|
|
assert_de_tokens(
|
|
&data,
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("t"),
|
|
Token::Str("A"),
|
|
Token::Str("c"),
|
|
Token::U32(7),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
let data = Data::Var(42);
|
|
|
|
assert_de_tokens(&data, &[Token::U32(42)]);
|
|
|
|
// TODO test error output
|
|
}
|
|
|
|
#[test]
|
|
fn test_transparent_struct() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(transparent)]
|
|
struct Transparent {
|
|
#[serde(skip)]
|
|
a: bool,
|
|
b: u32,
|
|
#[serde(skip)]
|
|
c: bool,
|
|
d: PhantomData<()>,
|
|
}
|
|
|
|
assert_tokens(
|
|
&Transparent {
|
|
a: false,
|
|
b: 1,
|
|
c: false,
|
|
d: PhantomData,
|
|
},
|
|
&[Token::U32(1)],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_transparent_tuple_struct() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(transparent)]
|
|
struct Transparent(
|
|
#[serde(skip)] bool,
|
|
u32,
|
|
#[serde(skip)] bool,
|
|
PhantomData<()>,
|
|
);
|
|
|
|
assert_tokens(&Transparent(false, 1, false, PhantomData), &[Token::U32(1)]);
|
|
}
|
|
|
|
#[test]
|
|
fn test_internally_tagged_unit_enum_with_unknown_fields() {
|
|
#[derive(Deserialize, PartialEq, Debug)]
|
|
#[serde(tag = "t")]
|
|
enum Data {
|
|
A,
|
|
}
|
|
|
|
let data = Data::A;
|
|
|
|
assert_de_tokens(
|
|
&data,
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("t"),
|
|
Token::Str("A"),
|
|
Token::Str("b"),
|
|
Token::I32(0),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_expecting_message() {
|
|
#[derive(Deserialize, PartialEq, Debug)]
|
|
#[serde(expecting = "something strange...")]
|
|
struct Unit;
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(expecting = "something strange...")]
|
|
struct Newtype(bool);
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(expecting = "something strange...")]
|
|
struct Tuple(u32, bool);
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(expecting = "something strange...")]
|
|
struct Struct {
|
|
#[allow(dead_code)]
|
|
question: String,
|
|
#[allow(dead_code)]
|
|
answer: u32,
|
|
}
|
|
|
|
assert_de_tokens_error::<Unit>(
|
|
&[Token::Str("Unit")],
|
|
r#"invalid type: string "Unit", expected something strange..."#,
|
|
);
|
|
|
|
assert_de_tokens_error::<Newtype>(
|
|
&[Token::Str("Newtype")],
|
|
r#"invalid type: string "Newtype", expected something strange..."#,
|
|
);
|
|
|
|
assert_de_tokens_error::<Tuple>(
|
|
&[Token::Str("Tuple")],
|
|
r#"invalid type: string "Tuple", expected something strange..."#,
|
|
);
|
|
|
|
assert_de_tokens_error::<Struct>(
|
|
&[Token::Str("Struct")],
|
|
r#"invalid type: string "Struct", expected something strange..."#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_expecting_message_externally_tagged_enum() {
|
|
#[derive(Deserialize)]
|
|
#[serde(expecting = "something strange...")]
|
|
enum Enum {
|
|
ExternallyTagged,
|
|
}
|
|
|
|
assert_de_tokens_error::<Enum>(
|
|
&[Token::Str("ExternallyTagged")],
|
|
r#"invalid type: string "ExternallyTagged", expected something strange..."#,
|
|
);
|
|
|
|
// Check that #[serde(expecting = "...")] doesn't affect variant identifier error message
|
|
assert_de_tokens_error::<Enum>(
|
|
&[Token::Enum { name: "Enum" }, Token::Unit],
|
|
"invalid type: unit value, expected variant identifier",
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_expecting_message_internally_tagged_enum() {
|
|
#[derive(Deserialize)]
|
|
#[serde(tag = "tag")]
|
|
#[serde(expecting = "something strange...")]
|
|
enum Enum {
|
|
InternallyTagged,
|
|
}
|
|
|
|
assert_de_tokens_error::<Enum>(
|
|
&[Token::Str("InternallyTagged")],
|
|
r#"invalid type: string "InternallyTagged", expected something strange..."#,
|
|
);
|
|
|
|
// Check that #[serde(expecting = "...")] doesn't affect variant identifier error message
|
|
assert_de_tokens_error::<Enum>(
|
|
&[Token::Map { len: None }, Token::Str("tag"), Token::Unit],
|
|
"invalid type: unit value, expected variant identifier",
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_expecting_message_adjacently_tagged_enum() {
|
|
#[derive(Deserialize)]
|
|
#[serde(tag = "tag", content = "content")]
|
|
#[serde(expecting = "something strange...")]
|
|
enum Enum {
|
|
AdjacentlyTagged,
|
|
}
|
|
|
|
assert_de_tokens_error::<Enum>(
|
|
&[Token::Str("AdjacentlyTagged")],
|
|
r#"invalid type: string "AdjacentlyTagged", expected something strange..."#,
|
|
);
|
|
|
|
assert_de_tokens_error::<Enum>(
|
|
&[Token::Map { len: None }, Token::Unit],
|
|
r#"invalid type: unit value, expected "tag", "content", or other ignored fields"#,
|
|
);
|
|
|
|
// Check that #[serde(expecting = "...")] doesn't affect variant identifier error message
|
|
assert_de_tokens_error::<Enum>(
|
|
&[Token::Map { len: None }, Token::Str("tag"), Token::Unit],
|
|
"invalid type: unit value, expected variant of enum Enum",
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_expecting_message_untagged_tagged_enum() {
|
|
#[derive(Deserialize)]
|
|
#[serde(untagged)]
|
|
#[serde(expecting = "something strange...")]
|
|
enum Enum {
|
|
Untagged,
|
|
}
|
|
|
|
assert_de_tokens_error::<Enum>(&[Token::Str("Untagged")], "something strange...");
|
|
}
|
|
|
|
#[test]
|
|
fn test_expecting_message_identifier_enum() {
|
|
#[derive(Deserialize)]
|
|
#[serde(field_identifier)]
|
|
#[serde(expecting = "something strange...")]
|
|
enum FieldEnum {
|
|
Field,
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
#[serde(variant_identifier)]
|
|
#[serde(expecting = "something strange...")]
|
|
enum VariantEnum {
|
|
Variant,
|
|
}
|
|
|
|
assert_de_tokens_error::<FieldEnum>(
|
|
&[Token::Unit],
|
|
"invalid type: unit value, expected something strange...",
|
|
);
|
|
|
|
assert_de_tokens_error::<FieldEnum>(
|
|
&[
|
|
Token::Enum { name: "FieldEnum" },
|
|
Token::Str("Unknown"),
|
|
Token::None,
|
|
],
|
|
"invalid type: map, expected something strange...",
|
|
);
|
|
|
|
assert_de_tokens_error::<VariantEnum>(
|
|
&[Token::Unit],
|
|
"invalid type: unit value, expected something strange...",
|
|
);
|
|
|
|
assert_de_tokens_error::<VariantEnum>(
|
|
&[
|
|
Token::Enum {
|
|
name: "VariantEnum",
|
|
},
|
|
Token::Str("Unknown"),
|
|
Token::None,
|
|
],
|
|
"invalid type: map, expected something strange...",
|
|
);
|
|
}
|
|
|
|
mod flatten {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn complex() {
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Outer {
|
|
y: u32,
|
|
#[serde(flatten)]
|
|
first: First,
|
|
#[serde(flatten)]
|
|
second: Second,
|
|
z: u32,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct First {
|
|
a: u32,
|
|
b: bool,
|
|
c: Vec<String>,
|
|
d: String,
|
|
e: Option<u64>,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Second {
|
|
f: u32,
|
|
}
|
|
|
|
assert_de_tokens(
|
|
&Outer {
|
|
y: 0,
|
|
first: First {
|
|
a: 1,
|
|
b: true,
|
|
c: vec!["a".into(), "b".into()],
|
|
d: "c".into(),
|
|
e: Some(2),
|
|
},
|
|
second: Second { f: 3 },
|
|
z: 4,
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("y"),
|
|
Token::U32(0),
|
|
Token::Str("a"),
|
|
Token::U32(1),
|
|
Token::Str("b"),
|
|
Token::Bool(true),
|
|
Token::Str("c"),
|
|
Token::Seq { len: Some(2) },
|
|
Token::Str("a"),
|
|
Token::Str("b"),
|
|
Token::SeqEnd,
|
|
Token::Str("d"),
|
|
Token::Str("c"),
|
|
Token::Str("e"),
|
|
Token::U64(2),
|
|
Token::Str("f"),
|
|
Token::U32(3),
|
|
Token::Str("z"),
|
|
Token::U32(4),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
assert_ser_tokens(
|
|
&Outer {
|
|
y: 0,
|
|
first: First {
|
|
a: 1,
|
|
b: true,
|
|
c: vec!["a".into(), "b".into()],
|
|
d: "c".into(),
|
|
e: Some(2),
|
|
},
|
|
second: Second { f: 3 },
|
|
z: 4,
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("y"),
|
|
Token::U32(0),
|
|
Token::Str("a"),
|
|
Token::U32(1),
|
|
Token::Str("b"),
|
|
Token::Bool(true),
|
|
Token::Str("c"),
|
|
Token::Seq { len: Some(2) },
|
|
Token::Str("a"),
|
|
Token::Str("b"),
|
|
Token::SeqEnd,
|
|
Token::Str("d"),
|
|
Token::Str("c"),
|
|
Token::Str("e"),
|
|
Token::Some,
|
|
Token::U64(2),
|
|
Token::Str("f"),
|
|
Token::U32(3),
|
|
Token::Str("z"),
|
|
Token::U32(4),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn map_twice() {
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
struct Outer {
|
|
#[serde(flatten)]
|
|
first: BTreeMap<String, String>,
|
|
#[serde(flatten)]
|
|
between: Inner,
|
|
#[serde(flatten)]
|
|
second: BTreeMap<String, String>,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
struct Inner {
|
|
y: String,
|
|
}
|
|
|
|
assert_de_tokens(
|
|
&Outer {
|
|
first: {
|
|
let mut first = BTreeMap::new();
|
|
first.insert("x".to_owned(), "X".to_owned());
|
|
first.insert("y".to_owned(), "Y".to_owned());
|
|
first
|
|
},
|
|
between: Inner { y: "Y".to_owned() },
|
|
second: {
|
|
let mut second = BTreeMap::new();
|
|
second.insert("x".to_owned(), "X".to_owned());
|
|
second
|
|
},
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("x"),
|
|
Token::Str("X"),
|
|
Token::Str("y"),
|
|
Token::Str("Y"),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn unsupported_type() {
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Outer {
|
|
outer: String,
|
|
#[serde(flatten)]
|
|
inner: String,
|
|
}
|
|
|
|
assert_ser_tokens_error(
|
|
&Outer {
|
|
outer: "foo".into(),
|
|
inner: "bar".into(),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("outer"),
|
|
Token::Str("foo"),
|
|
],
|
|
"can only flatten structs and maps (got a string)",
|
|
);
|
|
assert_de_tokens_error::<Outer>(
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("outer"),
|
|
Token::Str("foo"),
|
|
Token::Str("a"),
|
|
Token::Str("b"),
|
|
Token::MapEnd,
|
|
],
|
|
"can only flatten structs and maps",
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn unknown_field() {
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
#[serde(deny_unknown_fields)]
|
|
struct Outer {
|
|
dummy: String,
|
|
#[serde(flatten)]
|
|
inner: Inner,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Inner {
|
|
foo: HashMap<String, u32>,
|
|
}
|
|
|
|
assert_de_tokens_error::<Outer>(
|
|
&[
|
|
Token::Struct {
|
|
name: "Outer",
|
|
len: 1,
|
|
},
|
|
Token::Str("dummy"),
|
|
Token::Str("23"),
|
|
Token::Str("foo"),
|
|
Token::Map { len: None },
|
|
Token::Str("a"),
|
|
Token::U32(1),
|
|
Token::Str("b"),
|
|
Token::U32(2),
|
|
Token::MapEnd,
|
|
Token::Str("bar"),
|
|
Token::U32(23),
|
|
Token::StructEnd,
|
|
],
|
|
"unknown field `bar`",
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn non_string_keys() {
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct TestStruct {
|
|
name: String,
|
|
age: u32,
|
|
#[serde(flatten)]
|
|
mapping: HashMap<u32, u32>,
|
|
}
|
|
|
|
let mut mapping = HashMap::new();
|
|
mapping.insert(0, 42);
|
|
assert_tokens(
|
|
&TestStruct {
|
|
name: "peter".into(),
|
|
age: 3,
|
|
mapping,
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("name"),
|
|
Token::Str("peter"),
|
|
Token::Str("age"),
|
|
Token::U32(3),
|
|
Token::U32(0),
|
|
Token::U32(42),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn lifetime_propagation() {
|
|
#[derive(Deserialize, Serialize, Debug, PartialEq)]
|
|
struct A<T> {
|
|
#[serde(flatten)]
|
|
t: T,
|
|
}
|
|
|
|
#[derive(Deserialize, Serialize, Debug, PartialEq)]
|
|
struct B<'a> {
|
|
#[serde(flatten, borrow)]
|
|
t: HashMap<&'a str, u32>,
|
|
}
|
|
|
|
#[derive(Deserialize, Serialize, Debug, PartialEq)]
|
|
struct C<'a> {
|
|
#[serde(flatten, borrow)]
|
|
t: HashMap<&'a [u8], u32>,
|
|
}
|
|
|
|
let mut owned_map = HashMap::new();
|
|
owned_map.insert("x".to_string(), 42u32);
|
|
assert_tokens(
|
|
&A { t: owned_map },
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("x"),
|
|
Token::U32(42),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
let mut borrowed_map = HashMap::new();
|
|
borrowed_map.insert("x", 42u32);
|
|
assert_ser_tokens(
|
|
&B {
|
|
t: borrowed_map.clone(),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::BorrowedStr("x"),
|
|
Token::U32(42),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&B { t: borrowed_map },
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::BorrowedStr("x"),
|
|
Token::U32(42),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
let mut borrowed_map = HashMap::new();
|
|
borrowed_map.insert(&b"x"[..], 42u32);
|
|
assert_ser_tokens(
|
|
&C {
|
|
t: borrowed_map.clone(),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Seq { len: Some(1) },
|
|
Token::U8(120),
|
|
Token::SeqEnd,
|
|
Token::U32(42),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&C { t: borrowed_map },
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::BorrowedBytes(b"x"),
|
|
Token::U32(42),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
// Regression test for https://github.com/serde-rs/serde/issues/1904
|
|
#[test]
|
|
fn enum_tuple_and_struct() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
enum Outer {
|
|
Tuple(f64, i32),
|
|
Flatten {
|
|
#[serde(flatten)]
|
|
nested: Nested,
|
|
},
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
struct Nested {
|
|
a: i32,
|
|
b: i32,
|
|
}
|
|
|
|
assert_tokens(
|
|
&Outer::Tuple(1.2, 3),
|
|
&[
|
|
Token::TupleVariant {
|
|
name: "Outer",
|
|
variant: "Tuple",
|
|
len: 2,
|
|
},
|
|
Token::F64(1.2),
|
|
Token::I32(3),
|
|
Token::TupleVariantEnd,
|
|
],
|
|
);
|
|
assert_tokens(
|
|
&Outer::Flatten {
|
|
nested: Nested { a: 1, b: 2 },
|
|
},
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "Outer",
|
|
variant: "Flatten",
|
|
},
|
|
Token::Map { len: None },
|
|
Token::Str("a"),
|
|
Token::I32(1),
|
|
Token::Str("b"),
|
|
Token::I32(2),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn option() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
struct Outer {
|
|
#[serde(flatten)]
|
|
inner1: Option<Inner1>,
|
|
#[serde(flatten)]
|
|
inner2: Option<Inner2>,
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
struct Inner1 {
|
|
inner1: i32,
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
struct Inner2 {
|
|
inner2: i32,
|
|
}
|
|
|
|
assert_tokens(
|
|
&Outer {
|
|
inner1: Some(Inner1 { inner1: 1 }),
|
|
inner2: Some(Inner2 { inner2: 2 }),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("inner1"),
|
|
Token::I32(1),
|
|
Token::Str("inner2"),
|
|
Token::I32(2),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
assert_tokens(
|
|
&Outer {
|
|
inner1: Some(Inner1 { inner1: 1 }),
|
|
inner2: None,
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("inner1"),
|
|
Token::I32(1),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
assert_tokens(
|
|
&Outer {
|
|
inner1: None,
|
|
inner2: Some(Inner2 { inner2: 2 }),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("inner2"),
|
|
Token::I32(2),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
|
|
assert_tokens(
|
|
&Outer {
|
|
inner1: None,
|
|
inner2: None,
|
|
},
|
|
&[Token::Map { len: None }, Token::MapEnd],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn ignored_any() {
|
|
#[derive(Deserialize, PartialEq, Debug)]
|
|
struct Outer {
|
|
#[serde(flatten)]
|
|
inner: IgnoredAny,
|
|
}
|
|
|
|
assert_de_tokens(
|
|
&Outer { inner: IgnoredAny },
|
|
&[Token::Map { len: None }, Token::MapEnd],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&Outer { inner: IgnoredAny },
|
|
&[
|
|
Token::Struct {
|
|
name: "DoNotMatter",
|
|
len: 0,
|
|
},
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn flatten_any_after_flatten_struct() {
|
|
#[derive(PartialEq, Debug)]
|
|
struct Any;
|
|
|
|
impl<'de> Deserialize<'de> for Any {
|
|
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
|
|
where
|
|
D: Deserializer<'de>,
|
|
{
|
|
struct AnyVisitor;
|
|
|
|
impl<'de> Visitor<'de> for AnyVisitor {
|
|
type Value = Any;
|
|
|
|
fn expecting(&self, _formatter: &mut fmt::Formatter) -> fmt::Result {
|
|
unimplemented!()
|
|
}
|
|
|
|
fn visit_map<M>(self, mut map: M) -> Result<Self::Value, M::Error>
|
|
where
|
|
M: MapAccess<'de>,
|
|
{
|
|
while let Some((Any, Any)) = map.next_entry()? {}
|
|
Ok(Any)
|
|
}
|
|
}
|
|
|
|
deserializer.deserialize_any(AnyVisitor)
|
|
}
|
|
}
|
|
|
|
#[derive(Deserialize, PartialEq, Debug)]
|
|
struct Outer {
|
|
#[serde(flatten)]
|
|
inner: Inner,
|
|
#[serde(flatten)]
|
|
extra: Any,
|
|
}
|
|
|
|
#[derive(Deserialize, PartialEq, Debug)]
|
|
struct Inner {
|
|
inner: i32,
|
|
}
|
|
|
|
let s = Outer {
|
|
inner: Inner { inner: 0 },
|
|
extra: Any,
|
|
};
|
|
|
|
assert_de_tokens(
|
|
&s,
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("inner"),
|
|
Token::I32(0),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn alias() {
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
struct Outer {
|
|
#[serde(flatten)]
|
|
a: AliasStruct,
|
|
b: i32,
|
|
}
|
|
|
|
assert_de_tokens(
|
|
&Outer {
|
|
a: AliasStruct {
|
|
a1: 1,
|
|
a2: 2,
|
|
a4: 4,
|
|
},
|
|
b: 7,
|
|
},
|
|
&[
|
|
Token::Struct {
|
|
name: "Outer",
|
|
len: 4,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("a2"),
|
|
Token::I32(2),
|
|
Token::Str("a5"),
|
|
Token::I32(4),
|
|
Token::Str("b"),
|
|
Token::I32(7),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
|
|
assert_de_tokens(
|
|
&Outer {
|
|
a: AliasStruct {
|
|
a1: 1,
|
|
a2: 2,
|
|
a4: 4,
|
|
},
|
|
b: 7,
|
|
},
|
|
&[
|
|
Token::Struct {
|
|
name: "Outer",
|
|
len: 4,
|
|
},
|
|
Token::Str("a1"),
|
|
Token::I32(1),
|
|
Token::Str("a2"),
|
|
Token::I32(2),
|
|
Token::Str("a6"),
|
|
Token::I32(4),
|
|
Token::Str("b"),
|
|
Token::I32(7),
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
mod unit {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn unit() {
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Response<T> {
|
|
#[serde(flatten)]
|
|
data: T,
|
|
status: usize,
|
|
}
|
|
|
|
assert_tokens(
|
|
&Response {
|
|
data: (),
|
|
status: 0,
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("status"),
|
|
Token::U64(0),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn unit_struct() {
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Response<T> {
|
|
#[serde(flatten)]
|
|
data: T,
|
|
status: usize,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Unit;
|
|
|
|
assert_tokens(
|
|
&Response {
|
|
data: Unit,
|
|
status: 0,
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("status"),
|
|
Token::U64(0),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
}
|
|
|
|
mod enum_ {
|
|
use super::*;
|
|
|
|
mod externally_tagged {
|
|
use super::*;
|
|
use std::iter::FromIterator;
|
|
|
|
#[test]
|
|
fn straightforward() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
enum Data {
|
|
A {
|
|
a: i32,
|
|
#[serde(flatten)]
|
|
flat: Flat,
|
|
},
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
struct Flat {
|
|
b: i32,
|
|
}
|
|
|
|
let data = Data::A {
|
|
a: 0,
|
|
flat: Flat { b: 0 },
|
|
};
|
|
|
|
assert_tokens(
|
|
&data,
|
|
&[
|
|
Token::NewtypeVariant {
|
|
name: "Data",
|
|
variant: "A",
|
|
},
|
|
Token::Map { len: None },
|
|
Token::Str("a"),
|
|
Token::I32(0),
|
|
Token::Str("b"),
|
|
Token::I32(0),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Flatten {
|
|
#[serde(flatten)]
|
|
data: Enum,
|
|
|
|
#[serde(flatten)]
|
|
extra: HashMap<String, String>,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
enum Enum {
|
|
Newtype(HashMap<String, String>),
|
|
Tuple(u32, u32),
|
|
Struct { index: u32, value: u32 },
|
|
}
|
|
|
|
#[test]
|
|
fn newtype() {
|
|
assert_tokens(
|
|
&Flatten {
|
|
data: Enum::Newtype(HashMap::from_iter([("key".into(), "value".into())])),
|
|
extra: HashMap::from_iter([("extra_key".into(), "extra value".into())]),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("Newtype"), // variant
|
|
Token::Map { len: Some(1) },
|
|
Token::Str("key"),
|
|
Token::Str("value"),
|
|
Token::MapEnd,
|
|
Token::Str("extra_key"),
|
|
Token::Str("extra value"),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
// Reaches crate::private::de::content::VariantDeserializer::tuple_variant
|
|
// Content::Seq case
|
|
// via FlatMapDeserializer::deserialize_enum
|
|
#[test]
|
|
fn tuple() {
|
|
assert_tokens(
|
|
&Flatten {
|
|
data: Enum::Tuple(0, 42),
|
|
extra: HashMap::from_iter([("extra_key".into(), "extra value".into())]),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("Tuple"), // variant
|
|
Token::Seq { len: Some(2) },
|
|
Token::U32(0),
|
|
Token::U32(42),
|
|
Token::SeqEnd,
|
|
Token::Str("extra_key"),
|
|
Token::Str("extra value"),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
// Reaches crate::private::de::content::VariantDeserializer::struct_variant
|
|
// Content::Seq case
|
|
// via FlatMapDeserializer::deserialize_enum
|
|
#[test]
|
|
fn struct_from_seq() {
|
|
assert_de_tokens(
|
|
&Flatten {
|
|
data: Enum::Struct {
|
|
index: 0,
|
|
value: 42,
|
|
},
|
|
extra: HashMap::from_iter([("extra_key".into(), "extra value".into())]),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("Struct"), // variant
|
|
Token::Seq { len: Some(2) },
|
|
Token::U32(0), // index
|
|
Token::U32(42), // value
|
|
Token::SeqEnd,
|
|
Token::Str("extra_key"),
|
|
Token::Str("extra value"),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
// Reaches crate::private::de::content::VariantDeserializer::struct_variant
|
|
// Content::Map case
|
|
// via FlatMapDeserializer::deserialize_enum
|
|
#[test]
|
|
fn struct_from_map() {
|
|
assert_tokens(
|
|
&Flatten {
|
|
data: Enum::Struct {
|
|
index: 0,
|
|
value: 42,
|
|
},
|
|
extra: HashMap::from_iter([("extra_key".into(), "extra value".into())]),
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("Struct"), // variant
|
|
Token::Struct {
|
|
len: 2,
|
|
name: "Struct",
|
|
},
|
|
Token::Str("index"),
|
|
Token::U32(0),
|
|
Token::Str("value"),
|
|
Token::U32(42),
|
|
Token::StructEnd,
|
|
Token::Str("extra_key"),
|
|
Token::Str("extra value"),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
}
|
|
|
|
mod adjacently_tagged {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn straightforward() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(tag = "t", content = "c")]
|
|
enum Data {
|
|
A {
|
|
a: i32,
|
|
#[serde(flatten)]
|
|
flat: Flat,
|
|
},
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
struct Flat {
|
|
b: i32,
|
|
}
|
|
|
|
let data = Data::A {
|
|
a: 0,
|
|
flat: Flat { b: 0 },
|
|
};
|
|
|
|
assert_tokens(
|
|
&data,
|
|
&[
|
|
Token::Struct {
|
|
name: "Data",
|
|
len: 2,
|
|
},
|
|
Token::Str("t"),
|
|
Token::UnitVariant {
|
|
name: "Data",
|
|
variant: "A",
|
|
},
|
|
Token::Str("c"),
|
|
Token::Map { len: None },
|
|
Token::Str("a"),
|
|
Token::I32(0),
|
|
Token::Str("b"),
|
|
Token::I32(0),
|
|
Token::MapEnd,
|
|
Token::StructEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Flatten {
|
|
outer: u32,
|
|
|
|
#[serde(flatten)]
|
|
data: NewtypeWrapper,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct NewtypeWrapper(pub Enum);
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
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#[serde(tag = "tag", content = "content")]
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enum Enum {
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Newtype(NewtypeVariant),
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Struct { index: u32, value: u32 },
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}
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|
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#[derive(Debug, PartialEq, Serialize, Deserialize)]
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struct NewtypeVariant {
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value: u32,
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}
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|
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#[test]
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fn struct_() {
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assert_tokens(
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&Flatten {
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outer: 42,
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data: NewtypeWrapper(Enum::Struct {
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index: 0,
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value: 42,
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}),
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},
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&[
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Token::Map { len: None },
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Token::Str("outer"),
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Token::U32(42),
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Token::Str("tag"),
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Token::UnitVariant {
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name: "Enum",
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variant: "Struct",
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},
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Token::Str("content"),
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Token::Struct {
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len: 2,
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name: "Struct",
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},
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Token::Str("index"),
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Token::U32(0),
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Token::Str("value"),
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Token::U32(42),
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Token::StructEnd,
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Token::MapEnd,
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],
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);
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}
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|
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#[test]
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fn newtype() {
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assert_tokens(
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&Flatten {
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outer: 42,
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data: NewtypeWrapper(Enum::Newtype(NewtypeVariant { value: 23 })),
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},
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|
&[
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Token::Map { len: None },
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|
Token::Str("outer"),
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|
Token::U32(42),
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|
Token::Str("tag"),
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|
Token::UnitVariant {
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|
name: "Enum",
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|
variant: "Newtype",
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|
},
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|
Token::Str("content"),
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|
Token::Struct {
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|
len: 1,
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name: "NewtypeVariant",
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},
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|
Token::Str("value"),
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|
Token::U32(23),
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Token::StructEnd,
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|
Token::MapEnd,
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|
],
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|
);
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|
}
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|
}
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|
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|
mod internally_tagged {
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use super::*;
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|
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|
#[test]
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fn straightforward() {
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|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
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|
#[serde(tag = "t")]
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|
enum Data {
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|
A {
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|
a: i32,
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#[serde(flatten)]
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|
flat: Flat,
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|
},
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|
}
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|
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|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
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|
struct Flat {
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|
b: i32,
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|
}
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let data = Data::A {
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a: 0,
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flat: Flat { b: 0 },
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};
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assert_tokens(
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&data,
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&[
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Token::Map { len: None },
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Token::Str("t"),
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Token::Str("A"),
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|
Token::Str("a"),
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|
Token::I32(0),
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|
Token::Str("b"),
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|
Token::I32(0),
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|
Token::MapEnd,
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|
],
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|
);
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}
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|
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|
#[test]
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|
fn structs() {
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|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
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|
struct Flatten {
|
|
#[serde(flatten)]
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|
x: X,
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|
#[serde(flatten)]
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|
y: Y,
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|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
#[serde(tag = "typeX")]
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|
enum X {
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|
A { a: i32 },
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|
B { b: i32 },
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
#[serde(tag = "typeY")]
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|
enum Y {
|
|
C { c: i32 },
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|
D { d: i32 },
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|
}
|
|
|
|
assert_tokens(
|
|
&Flatten {
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|
x: X::B { b: 1 },
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|
y: Y::D { d: 2 },
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|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("typeX"),
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|
Token::Str("B"),
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|
Token::Str("b"),
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|
Token::I32(1),
|
|
Token::Str("typeY"),
|
|
Token::Str("D"),
|
|
Token::Str("d"),
|
|
Token::I32(2),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn unit_enum_with_unknown_fields() {
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
struct Flatten {
|
|
#[serde(flatten)]
|
|
x: X,
|
|
#[serde(flatten)]
|
|
y: Y,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
#[serde(tag = "typeX")]
|
|
enum X {
|
|
A,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Deserialize)]
|
|
#[serde(tag = "typeY")]
|
|
enum Y {
|
|
B { c: u32 },
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|
}
|
|
|
|
assert_de_tokens(
|
|
&Flatten {
|
|
x: X::A,
|
|
y: Y::B { c: 0 },
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|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("typeX"),
|
|
Token::Str("A"),
|
|
Token::Str("typeY"),
|
|
Token::Str("B"),
|
|
Token::Str("c"),
|
|
Token::I32(0),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
}
|
|
|
|
mod untagged {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn straightforward() {
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
#[serde(untagged)]
|
|
enum Data {
|
|
A {
|
|
a: i32,
|
|
#[serde(flatten)]
|
|
flat: Flat,
|
|
},
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, PartialEq, Debug)]
|
|
struct Flat {
|
|
b: i32,
|
|
}
|
|
|
|
let data = Data::A {
|
|
a: 0,
|
|
flat: Flat { b: 0 },
|
|
};
|
|
|
|
assert_tokens(
|
|
&data,
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("a"),
|
|
Token::I32(0),
|
|
Token::Str("b"),
|
|
Token::I32(0),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
struct Flatten {
|
|
#[serde(flatten)]
|
|
data: Enum,
|
|
}
|
|
|
|
#[derive(Debug, PartialEq, Serialize, Deserialize)]
|
|
#[serde(untagged)]
|
|
enum Enum {
|
|
Struct { a: i32 },
|
|
}
|
|
|
|
#[test]
|
|
fn struct_() {
|
|
assert_tokens(
|
|
&Flatten {
|
|
data: Enum::Struct { a: 0 },
|
|
},
|
|
&[
|
|
Token::Map { len: None },
|
|
Token::Str("a"),
|
|
Token::I32(0),
|
|
Token::MapEnd,
|
|
],
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|