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-rw-r--r--vendor/serde_json/tests/test.rs2505
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diff --git a/vendor/serde_json/tests/test.rs b/vendor/serde_json/tests/test.rs
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+++ b/vendor/serde_json/tests/test.rs
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+#![cfg(not(feature = "preserve_order"))]
+#![allow(
+ clippy::assertions_on_result_states,
+ clippy::cast_precision_loss,
+ clippy::derive_partial_eq_without_eq,
+ clippy::excessive_precision,
+ clippy::float_cmp,
+ clippy::items_after_statements,
+ clippy::let_underscore_untyped,
+ clippy::shadow_unrelated,
+ clippy::too_many_lines,
+ clippy::unreadable_literal,
+ clippy::unseparated_literal_suffix,
+ clippy::vec_init_then_push,
+ clippy::zero_sized_map_values
+)]
+
+#[macro_use]
+mod macros;
+
+#[cfg(feature = "raw_value")]
+use ref_cast::RefCast;
+use serde::de::{self, IgnoredAny, IntoDeserializer};
+use serde::ser::{self, SerializeMap, SerializeSeq, Serializer};
+use serde::{Deserialize, Serialize};
+use serde_bytes::{ByteBuf, Bytes};
+#[cfg(feature = "raw_value")]
+use serde_json::value::RawValue;
+use serde_json::{
+ from_reader, from_slice, from_str, from_value, json, to_string, to_string_pretty, to_value,
+ to_vec, Deserializer, Number, Value,
+};
+use std::collections::BTreeMap;
+#[cfg(feature = "raw_value")]
+use std::collections::HashMap;
+use std::fmt::{self, Debug};
+use std::hash::BuildHasher;
+#[cfg(feature = "raw_value")]
+use std::hash::{Hash, Hasher};
+use std::io;
+use std::iter;
+use std::marker::PhantomData;
+use std::mem;
+use std::str::FromStr;
+use std::string::ToString;
+use std::{f32, f64};
+use std::{i16, i32, i64, i8};
+use std::{u16, u32, u64, u8};
+
+macro_rules! treemap {
+ () => {
+ BTreeMap::new()
+ };
+ ($($k:expr => $v:expr),+ $(,)?) => {
+ {
+ let mut m = BTreeMap::new();
+ $(
+ m.insert($k, $v);
+ )+
+ m
+ }
+ };
+}
+
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+enum Animal {
+ Dog,
+ Frog(String, Vec<isize>),
+ Cat { age: usize, name: String },
+ AntHive(Vec<String>),
+}
+
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+struct Inner {
+ a: (),
+ b: usize,
+ c: Vec<String>,
+}
+
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+struct Outer {
+ inner: Vec<Inner>,
+}
+
+fn test_encode_ok<T>(errors: &[(T, &str)])
+where
+ T: PartialEq + Debug + ser::Serialize,
+{
+ for &(ref value, out) in errors {
+ let out = out.to_string();
+
+ let s = to_string(value).unwrap();
+ assert_eq!(s, out);
+
+ let v = to_value(value).unwrap();
+ let s = to_string(&v).unwrap();
+ assert_eq!(s, out);
+ }
+}
+
+fn test_pretty_encode_ok<T>(errors: &[(T, &str)])
+where
+ T: PartialEq + Debug + ser::Serialize,
+{
+ for &(ref value, out) in errors {
+ let out = out.to_string();
+
+ let s = to_string_pretty(value).unwrap();
+ assert_eq!(s, out);
+
+ let v = to_value(value).unwrap();
+ let s = to_string_pretty(&v).unwrap();
+ assert_eq!(s, out);
+ }
+}
+
+#[test]
+fn test_write_null() {
+ let tests = &[((), "null")];
+ test_encode_ok(tests);
+ test_pretty_encode_ok(tests);
+}
+
+#[test]
+fn test_write_u64() {
+ let tests = &[(3u64, "3"), (u64::MAX, &u64::MAX.to_string())];
+ test_encode_ok(tests);
+ test_pretty_encode_ok(tests);
+}
+
+#[test]
+fn test_write_i64() {
+ let tests = &[
+ (3i64, "3"),
+ (-2i64, "-2"),
+ (-1234i64, "-1234"),
+ (i64::MIN, &i64::MIN.to_string()),
+ ];
+ test_encode_ok(tests);
+ test_pretty_encode_ok(tests);
+}
+
+#[test]
+fn test_write_f64() {
+ let tests = &[
+ (3.0, "3.0"),
+ (3.1, "3.1"),
+ (-1.5, "-1.5"),
+ (0.5, "0.5"),
+ (f64::MIN, "-1.7976931348623157e308"),
+ (f64::MAX, "1.7976931348623157e308"),
+ (f64::EPSILON, "2.220446049250313e-16"),
+ ];
+ test_encode_ok(tests);
+ test_pretty_encode_ok(tests);
+}
+
+#[test]
+fn test_encode_nonfinite_float_yields_null() {
+ let v = to_value(::std::f64::NAN.copysign(1.0)).unwrap();
+ assert!(v.is_null());
+
+ let v = to_value(::std::f64::NAN.copysign(-1.0)).unwrap();
+ assert!(v.is_null());
+
+ let v = to_value(::std::f64::INFINITY).unwrap();
+ assert!(v.is_null());
+
+ let v = to_value(-::std::f64::INFINITY).unwrap();
+ assert!(v.is_null());
+
+ let v = to_value(::std::f32::NAN.copysign(1.0)).unwrap();
+ assert!(v.is_null());
+
+ let v = to_value(::std::f32::NAN.copysign(-1.0)).unwrap();
+ assert!(v.is_null());
+
+ let v = to_value(::std::f32::INFINITY).unwrap();
+ assert!(v.is_null());
+
+ let v = to_value(-::std::f32::INFINITY).unwrap();
+ assert!(v.is_null());
+}
+
+#[test]
+fn test_write_str() {
+ let tests = &[("", "\"\""), ("foo", "\"foo\"")];
+ test_encode_ok(tests);
+ test_pretty_encode_ok(tests);
+}
+
+#[test]
+fn test_write_bool() {
+ let tests = &[(true, "true"), (false, "false")];
+ test_encode_ok(tests);
+ test_pretty_encode_ok(tests);
+}
+
+#[test]
+fn test_write_char() {
+ let tests = &[
+ ('n', "\"n\""),
+ ('"', "\"\\\"\""),
+ ('\\', "\"\\\\\""),
+ ('/', "\"/\""),
+ ('\x08', "\"\\b\""),
+ ('\x0C', "\"\\f\""),
+ ('\n', "\"\\n\""),
+ ('\r', "\"\\r\""),
+ ('\t', "\"\\t\""),
+ ('\x0B', "\"\\u000b\""),
+ ('\u{3A3}', "\"\u{3A3}\""),
+ ];
+ test_encode_ok(tests);
+ test_pretty_encode_ok(tests);
+}
+
+#[test]
+fn test_write_list() {
+ test_encode_ok(&[
+ (vec![], "[]"),
+ (vec![true], "[true]"),
+ (vec![true, false], "[true,false]"),
+ ]);
+
+ test_encode_ok(&[
+ (vec![vec![], vec![], vec![]], "[[],[],[]]"),
+ (vec![vec![1, 2, 3], vec![], vec![]], "[[1,2,3],[],[]]"),
+ (vec![vec![], vec![1, 2, 3], vec![]], "[[],[1,2,3],[]]"),
+ (vec![vec![], vec![], vec![1, 2, 3]], "[[],[],[1,2,3]]"),
+ ]);
+
+ test_pretty_encode_ok(&[
+ (vec![vec![], vec![], vec![]], pretty_str!([[], [], []])),
+ (
+ vec![vec![1, 2, 3], vec![], vec![]],
+ pretty_str!([[1, 2, 3], [], []]),
+ ),
+ (
+ vec![vec![], vec![1, 2, 3], vec![]],
+ pretty_str!([[], [1, 2, 3], []]),
+ ),
+ (
+ vec![vec![], vec![], vec![1, 2, 3]],
+ pretty_str!([[], [], [1, 2, 3]]),
+ ),
+ ]);
+
+ test_pretty_encode_ok(&[
+ (vec![], "[]"),
+ (vec![true], pretty_str!([true])),
+ (vec![true, false], pretty_str!([true, false])),
+ ]);
+
+ let long_test_list = json!([false, null, ["foo\nbar", 3.5]]);
+
+ test_encode_ok(&[(
+ long_test_list.clone(),
+ json_str!([false, null, ["foo\nbar", 3.5]]),
+ )]);
+
+ test_pretty_encode_ok(&[(
+ long_test_list,
+ pretty_str!([false, null, ["foo\nbar", 3.5]]),
+ )]);
+}
+
+#[test]
+fn test_write_object() {
+ test_encode_ok(&[
+ (treemap!(), "{}"),
+ (treemap!("a".to_string() => true), "{\"a\":true}"),
+ (
+ treemap!(
+ "a".to_string() => true,
+ "b".to_string() => false,
+ ),
+ "{\"a\":true,\"b\":false}",
+ ),
+ ]);
+
+ test_encode_ok(&[
+ (
+ treemap![
+ "a".to_string() => treemap![],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ "{\"a\":{},\"b\":{},\"c\":{}}",
+ ),
+ (
+ treemap![
+ "a".to_string() => treemap![
+ "a".to_string() => treemap!["a" => vec![1,2,3]],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ "{\"a\":{\"a\":{\"a\":[1,2,3]},\"b\":{},\"c\":{}},\"b\":{},\"c\":{}}",
+ ),
+ (
+ treemap![
+ "a".to_string() => treemap![],
+ "b".to_string() => treemap![
+ "a".to_string() => treemap!["a" => vec![1,2,3]],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ "c".to_string() => treemap![],
+ ],
+ "{\"a\":{},\"b\":{\"a\":{\"a\":[1,2,3]},\"b\":{},\"c\":{}},\"c\":{}}",
+ ),
+ (
+ treemap![
+ "a".to_string() => treemap![],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![
+ "a".to_string() => treemap!["a" => vec![1,2,3]],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ ],
+ "{\"a\":{},\"b\":{},\"c\":{\"a\":{\"a\":[1,2,3]},\"b\":{},\"c\":{}}}",
+ ),
+ ]);
+
+ test_encode_ok(&[(treemap!['c' => ()], "{\"c\":null}")]);
+
+ test_pretty_encode_ok(&[
+ (
+ treemap![
+ "a".to_string() => treemap![],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ pretty_str!({
+ "a": {},
+ "b": {},
+ "c": {}
+ }),
+ ),
+ (
+ treemap![
+ "a".to_string() => treemap![
+ "a".to_string() => treemap!["a" => vec![1,2,3]],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ pretty_str!({
+ "a": {
+ "a": {
+ "a": [
+ 1,
+ 2,
+ 3
+ ]
+ },
+ "b": {},
+ "c": {}
+ },
+ "b": {},
+ "c": {}
+ }),
+ ),
+ (
+ treemap![
+ "a".to_string() => treemap![],
+ "b".to_string() => treemap![
+ "a".to_string() => treemap!["a" => vec![1,2,3]],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ "c".to_string() => treemap![],
+ ],
+ pretty_str!({
+ "a": {},
+ "b": {
+ "a": {
+ "a": [
+ 1,
+ 2,
+ 3
+ ]
+ },
+ "b": {},
+ "c": {}
+ },
+ "c": {}
+ }),
+ ),
+ (
+ treemap![
+ "a".to_string() => treemap![],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![
+ "a".to_string() => treemap!["a" => vec![1,2,3]],
+ "b".to_string() => treemap![],
+ "c".to_string() => treemap![],
+ ],
+ ],
+ pretty_str!({
+ "a": {},
+ "b": {},
+ "c": {
+ "a": {
+ "a": [
+ 1,
+ 2,
+ 3
+ ]
+ },
+ "b": {},
+ "c": {}
+ }
+ }),
+ ),
+ ]);
+
+ test_pretty_encode_ok(&[
+ (treemap!(), "{}"),
+ (
+ treemap!("a".to_string() => true),
+ pretty_str!({
+ "a": true
+ }),
+ ),
+ (
+ treemap!(
+ "a".to_string() => true,
+ "b".to_string() => false,
+ ),
+ pretty_str!( {
+ "a": true,
+ "b": false
+ }),
+ ),
+ ]);
+
+ let complex_obj = json!({
+ "b": [
+ {"c": "\x0c\x1f\r"},
+ {"d": ""}
+ ]
+ });
+
+ test_encode_ok(&[(
+ complex_obj.clone(),
+ json_str!({
+ "b": [
+ {
+ "c": (r#""\f\u001f\r""#)
+ },
+ {
+ "d": ""
+ }
+ ]
+ }),
+ )]);
+
+ test_pretty_encode_ok(&[(
+ complex_obj,
+ pretty_str!({
+ "b": [
+ {
+ "c": (r#""\f\u001f\r""#)
+ },
+ {
+ "d": ""
+ }
+ ]
+ }),
+ )]);
+}
+
+#[test]
+fn test_write_tuple() {
+ test_encode_ok(&[((5,), "[5]")]);
+
+ test_pretty_encode_ok(&[((5,), pretty_str!([5]))]);
+
+ test_encode_ok(&[((5, (6, "abc")), "[5,[6,\"abc\"]]")]);
+
+ test_pretty_encode_ok(&[((5, (6, "abc")), pretty_str!([5, [6, "abc"]]))]);
+}
+
+#[test]
+fn test_write_enum() {
+ test_encode_ok(&[
+ (Animal::Dog, "\"Dog\""),
+ (
+ Animal::Frog("Henry".to_string(), vec![]),
+ "{\"Frog\":[\"Henry\",[]]}",
+ ),
+ (
+ Animal::Frog("Henry".to_string(), vec![349]),
+ "{\"Frog\":[\"Henry\",[349]]}",
+ ),
+ (
+ Animal::Frog("Henry".to_string(), vec![349, 102]),
+ "{\"Frog\":[\"Henry\",[349,102]]}",
+ ),
+ (
+ Animal::Cat {
+ age: 5,
+ name: "Kate".to_string(),
+ },
+ "{\"Cat\":{\"age\":5,\"name\":\"Kate\"}}",
+ ),
+ (
+ Animal::AntHive(vec!["Bob".to_string(), "Stuart".to_string()]),
+ "{\"AntHive\":[\"Bob\",\"Stuart\"]}",
+ ),
+ ]);
+
+ test_pretty_encode_ok(&[
+ (Animal::Dog, "\"Dog\""),
+ (
+ Animal::Frog("Henry".to_string(), vec![]),
+ pretty_str!({
+ "Frog": [
+ "Henry",
+ []
+ ]
+ }),
+ ),
+ (
+ Animal::Frog("Henry".to_string(), vec![349]),
+ pretty_str!({
+ "Frog": [
+ "Henry",
+ [
+ 349
+ ]
+ ]
+ }),
+ ),
+ (
+ Animal::Frog("Henry".to_string(), vec![349, 102]),
+ pretty_str!({
+ "Frog": [
+ "Henry",
+ [
+ 349,
+ 102
+ ]
+ ]
+ }),
+ ),
+ ]);
+}
+
+#[test]
+fn test_write_option() {
+ test_encode_ok(&[(None, "null"), (Some("jodhpurs"), "\"jodhpurs\"")]);
+
+ test_encode_ok(&[
+ (None, "null"),
+ (Some(vec!["foo", "bar"]), "[\"foo\",\"bar\"]"),
+ ]);
+
+ test_pretty_encode_ok(&[(None, "null"), (Some("jodhpurs"), "\"jodhpurs\"")]);
+
+ test_pretty_encode_ok(&[
+ (None, "null"),
+ (Some(vec!["foo", "bar"]), pretty_str!(["foo", "bar"])),
+ ]);
+}
+
+#[test]
+fn test_write_newtype_struct() {
+ #[derive(Serialize, PartialEq, Debug)]
+ struct Newtype(BTreeMap<String, i32>);
+
+ let inner = Newtype(treemap!(String::from("inner") => 123));
+ let outer = treemap!(String::from("outer") => to_value(&inner).unwrap());
+
+ test_encode_ok(&[(inner, r#"{"inner":123}"#)]);
+
+ test_encode_ok(&[(outer, r#"{"outer":{"inner":123}}"#)]);
+}
+
+#[test]
+fn test_deserialize_number_to_untagged_enum() {
+ #[derive(Eq, PartialEq, Deserialize, Debug)]
+ #[serde(untagged)]
+ enum E {
+ N(i64),
+ }
+
+ assert_eq!(E::N(0), E::deserialize(Number::from(0)).unwrap());
+}
+
+fn test_parse_ok<T>(tests: Vec<(&str, T)>)
+where
+ T: Clone + Debug + PartialEq + ser::Serialize + de::DeserializeOwned,
+{
+ for (s, value) in tests {
+ let v: T = from_str(s).unwrap();
+ assert_eq!(v, value.clone());
+
+ let v: T = from_slice(s.as_bytes()).unwrap();
+ assert_eq!(v, value.clone());
+
+ // Make sure we can deserialize into a `Value`.
+ let json_value: Value = from_str(s).unwrap();
+ assert_eq!(json_value, to_value(&value).unwrap());
+
+ // Make sure we can deserialize from a `&Value`.
+ let v = T::deserialize(&json_value).unwrap();
+ assert_eq!(v, value);
+
+ // Make sure we can deserialize from a `Value`.
+ let v: T = from_value(json_value.clone()).unwrap();
+ assert_eq!(v, value);
+
+ // Make sure we can round trip back to `Value`.
+ let json_value2: Value = from_value(json_value.clone()).unwrap();
+ assert_eq!(json_value2, json_value);
+
+ // Make sure we can fully ignore.
+ let twoline = s.to_owned() + "\n3735928559";
+ let mut de = Deserializer::from_str(&twoline);
+ IgnoredAny::deserialize(&mut de).unwrap();
+ assert_eq!(0xDEAD_BEEF, u64::deserialize(&mut de).unwrap());
+
+ // Make sure every prefix is an EOF error, except that a prefix of a
+ // number may be a valid number.
+ if !json_value.is_number() {
+ for (i, _) in s.trim_end().char_indices() {
+ assert!(from_str::<Value>(&s[..i]).unwrap_err().is_eof());
+ assert!(from_str::<IgnoredAny>(&s[..i]).unwrap_err().is_eof());
+ }
+ }
+ }
+}
+
+// For testing representations that the deserializer accepts but the serializer
+// never generates. These do not survive a round-trip through Value.
+fn test_parse_unusual_ok<T>(tests: Vec<(&str, T)>)
+where
+ T: Clone + Debug + PartialEq + ser::Serialize + de::DeserializeOwned,
+{
+ for (s, value) in tests {
+ let v: T = from_str(s).unwrap();
+ assert_eq!(v, value.clone());
+
+ let v: T = from_slice(s.as_bytes()).unwrap();
+ assert_eq!(v, value.clone());
+ }
+}
+
+macro_rules! test_parse_err {
+ ($name:ident::<$($ty:ty),*>($arg:expr) => $expected:expr) => {
+ let actual = $name::<$($ty),*>($arg).unwrap_err().to_string();
+ assert_eq!(actual, $expected, "unexpected {} error", stringify!($name));
+ };
+}
+
+fn test_parse_err<T>(errors: &[(&str, &'static str)])
+where
+ T: Debug + PartialEq + de::DeserializeOwned,
+{
+ for &(s, err) in errors {
+ test_parse_err!(from_str::<T>(s) => err);
+ test_parse_err!(from_slice::<T>(s.as_bytes()) => err);
+ }
+}
+
+fn test_parse_slice_err<T>(errors: &[(&[u8], &'static str)])
+where
+ T: Debug + PartialEq + de::DeserializeOwned,
+{
+ for &(s, err) in errors {
+ test_parse_err!(from_slice::<T>(s) => err);
+ }
+}
+
+fn test_fromstr_parse_err<T>(errors: &[(&str, &'static str)])
+where
+ T: Debug + PartialEq + FromStr,
+ <T as FromStr>::Err: ToString,
+{
+ for &(s, err) in errors {
+ let actual = s.parse::<T>().unwrap_err().to_string();
+ assert_eq!(actual, err, "unexpected parsing error");
+ }
+}
+
+#[test]
+fn test_parse_null() {
+ test_parse_err::<()>(&[
+ ("n", "EOF while parsing a value at line 1 column 1"),
+ ("nul", "EOF while parsing a value at line 1 column 3"),
+ ("nulla", "trailing characters at line 1 column 5"),
+ ]);
+
+ test_parse_ok(vec![("null", ())]);
+}
+
+#[test]
+fn test_parse_bool() {
+ test_parse_err::<bool>(&[
+ ("t", "EOF while parsing a value at line 1 column 1"),
+ ("truz", "expected ident at line 1 column 4"),
+ ("f", "EOF while parsing a value at line 1 column 1"),
+ ("faz", "expected ident at line 1 column 3"),
+ ("truea", "trailing characters at line 1 column 5"),
+ ("falsea", "trailing characters at line 1 column 6"),
+ ]);
+
+ test_parse_ok(vec![
+ ("true", true),
+ (" true ", true),
+ ("false", false),
+ (" false ", false),
+ ]);
+}
+
+#[test]
+fn test_parse_char() {
+ test_parse_err::<char>(&[
+ (
+ "\"ab\"",
+ "invalid value: string \"ab\", expected a character at line 1 column 4",
+ ),
+ (
+ "10",
+ "invalid type: integer `10`, expected a character at line 1 column 2",
+ ),
+ ]);
+
+ test_parse_ok(vec![
+ ("\"n\"", 'n'),
+ ("\"\\\"\"", '"'),
+ ("\"\\\\\"", '\\'),
+ ("\"/\"", '/'),
+ ("\"\\b\"", '\x08'),
+ ("\"\\f\"", '\x0C'),
+ ("\"\\n\"", '\n'),
+ ("\"\\r\"", '\r'),
+ ("\"\\t\"", '\t'),
+ ("\"\\u000b\"", '\x0B'),
+ ("\"\\u000B\"", '\x0B'),
+ ("\"\u{3A3}\"", '\u{3A3}'),
+ ]);
+}
+
+#[test]
+fn test_parse_number_errors() {
+ test_parse_err::<f64>(&[
+ ("+", "expected value at line 1 column 1"),
+ (".", "expected value at line 1 column 1"),
+ ("-", "EOF while parsing a value at line 1 column 1"),
+ ("00", "invalid number at line 1 column 2"),
+ ("0x80", "trailing characters at line 1 column 2"),
+ ("\\0", "expected value at line 1 column 1"),
+ (".0", "expected value at line 1 column 1"),
+ ("0.", "EOF while parsing a value at line 1 column 2"),
+ ("1.", "EOF while parsing a value at line 1 column 2"),
+ ("1.a", "invalid number at line 1 column 3"),
+ ("1.e1", "invalid number at line 1 column 3"),
+ ("1e", "EOF while parsing a value at line 1 column 2"),
+ ("1e+", "EOF while parsing a value at line 1 column 3"),
+ ("1a", "trailing characters at line 1 column 2"),
+ (
+ "100e777777777777777777777777777",
+ "number out of range at line 1 column 14",
+ ),
+ (
+ "-100e777777777777777777777777777",
+ "number out of range at line 1 column 15",
+ ),
+ (
+ "1000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000", // 1e309
+ "number out of range at line 1 column 310",
+ ),
+ (
+ "1000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ .0e9", // 1e309
+ "number out of range at line 1 column 305",
+ ),
+ (
+ "1000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ e9", // 1e309
+ "number out of range at line 1 column 303",
+ ),
+ ]);
+}
+
+#[test]
+fn test_parse_i64() {
+ test_parse_ok(vec![
+ ("-2", -2),
+ ("-1234", -1234),
+ (" -1234 ", -1234),
+ (&i64::MIN.to_string(), i64::MIN),
+ (&i64::MAX.to_string(), i64::MAX),
+ ]);
+}
+
+#[test]
+fn test_parse_u64() {
+ test_parse_ok(vec![
+ ("0", 0u64),
+ ("3", 3u64),
+ ("1234", 1234),
+ (&u64::MAX.to_string(), u64::MAX),
+ ]);
+}
+
+#[test]
+fn test_parse_negative_zero() {
+ for negative_zero in &[
+ "-0",
+ "-0.0",
+ "-0e2",
+ "-0.0e2",
+ "-1e-400",
+ "-1e-4000000000000000000000000000000000000000000000000",
+ ] {
+ assert!(
+ from_str::<f32>(negative_zero).unwrap().is_sign_negative(),
+ "should have been negative: {:?}",
+ negative_zero,
+ );
+ assert!(
+ from_str::<f64>(negative_zero).unwrap().is_sign_negative(),
+ "should have been negative: {:?}",
+ negative_zero,
+ );
+ }
+}
+
+#[test]
+fn test_parse_f64() {
+ test_parse_ok(vec![
+ ("0.0", 0.0f64),
+ ("3.0", 3.0f64),
+ ("3.1", 3.1),
+ ("-1.2", -1.2),
+ ("0.4", 0.4),
+ // Edge case from:
+ // https://github.com/serde-rs/json/issues/536#issuecomment-583714900
+ ("2.638344616030823e-256", 2.638344616030823e-256),
+ ]);
+
+ #[cfg(not(feature = "arbitrary_precision"))]
+ test_parse_ok(vec![
+ // With arbitrary-precision enabled, this parses as Number{"3.00"}
+ // but the float is Number{"3.0"}
+ ("3.00", 3.0f64),
+ ("0.4e5", 0.4e5),
+ ("0.4e+5", 0.4e5),
+ ("0.4e15", 0.4e15),
+ ("0.4e+15", 0.4e15),
+ ("0.4e-01", 0.4e-1),
+ (" 0.4e-01 ", 0.4e-1),
+ ("0.4e-001", 0.4e-1),
+ ("0.4e-0", 0.4e0),
+ ("0.00e00", 0.0),
+ ("0.00e+00", 0.0),
+ ("0.00e-00", 0.0),
+ ("3.5E-2147483647", 0.0),
+ ("0.0100000000000000000001", 0.01),
+ (
+ &format!("{}", (i64::MIN as f64) - 1.0),
+ (i64::MIN as f64) - 1.0,
+ ),
+ (
+ &format!("{}", (u64::MAX as f64) + 1.0),
+ (u64::MAX as f64) + 1.0,
+ ),
+ (&format!("{}", f64::EPSILON), f64::EPSILON),
+ (
+ "0.0000000000000000000000000000000000000000000000000123e50",
+ 1.23,
+ ),
+ ("100e-777777777777777777777777777", 0.0),
+ (
+ "1010101010101010101010101010101010101010",
+ 10101010101010101010e20,
+ ),
+ (
+ "0.1010101010101010101010101010101010101010",
+ 0.1010101010101010101,
+ ),
+ ("0e1000000000000000000000000000000000000000000000", 0.0),
+ (
+ "1000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 00000000",
+ 1e308,
+ ),
+ (
+ "1000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ .0e8",
+ 1e308,
+ ),
+ (
+ "1000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ e8",
+ 1e308,
+ ),
+ (
+ "1000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000000000000000000000000000000000000000000000\
+ 000000000000000000e-10",
+ 1e308,
+ ),
+ ]);
+}
+
+#[test]
+fn test_value_as_f64() {
+ let v = serde_json::from_str::<Value>("1e1000");
+
+ #[cfg(not(feature = "arbitrary_precision"))]
+ assert!(v.is_err());
+
+ #[cfg(feature = "arbitrary_precision")]
+ assert_eq!(v.unwrap().as_f64(), None);
+}
+
+// Test roundtrip with some values that were not perfectly roundtripped by the
+// old f64 deserializer.
+#[cfg(feature = "float_roundtrip")]
+#[test]
+fn test_roundtrip_f64() {
+ for &float in &[
+ // Samples from quickcheck-ing roundtrip with `input: f64`. Comments
+ // indicate the value returned by the old deserializer.
+ 51.24817837550540_4, // 51.2481783755054_1
+ -93.3113703768803_3, // -93.3113703768803_2
+ -36.5739948427534_36, // -36.5739948427534_4
+ 52.31400820410624_4, // 52.31400820410624_
+ 97.4536532003468_5, // 97.4536532003468_4
+ // Samples from `rng.next_u64` + `f64::from_bits` + `is_finite` filter.
+ 2.0030397744267762e-253,
+ 7.101215824554616e260,
+ 1.769268377902049e74,
+ -1.6727517818542075e58,
+ 3.9287532173373315e299,
+ ] {
+ let json = serde_json::to_string(&float).unwrap();
+ let output: f64 = serde_json::from_str(&json).unwrap();
+ assert_eq!(float, output);
+ }
+}
+
+#[test]
+fn test_roundtrip_f32() {
+ // This number has 1 ULP error if parsed via f64 and converted to f32.
+ // https://github.com/serde-rs/json/pull/671#issuecomment-628534468
+ let float = 7.038531e-26;
+ let json = serde_json::to_string(&float).unwrap();
+ let output: f32 = serde_json::from_str(&json).unwrap();
+ assert_eq!(float, output);
+}
+
+#[test]
+fn test_serialize_char() {
+ let value = json!(
+ ({
+ let mut map = BTreeMap::new();
+ map.insert('c', ());
+ map
+ })
+ );
+ assert_eq!(&Value::Null, value.get("c").unwrap());
+}
+
+#[cfg(feature = "arbitrary_precision")]
+#[test]
+fn test_malicious_number() {
+ #[derive(Serialize)]
+ #[serde(rename = "$serde_json::private::Number")]
+ struct S {
+ #[serde(rename = "$serde_json::private::Number")]
+ f: &'static str,
+ }
+
+ let actual = serde_json::to_value(&S { f: "not a number" })
+ .unwrap_err()
+ .to_string();
+ assert_eq!(actual, "invalid number at line 1 column 1");
+}
+
+#[test]
+fn test_parse_number() {
+ test_parse_ok(vec![
+ ("0.0", Number::from_f64(0.0f64).unwrap()),
+ ("3.0", Number::from_f64(3.0f64).unwrap()),
+ ("3.1", Number::from_f64(3.1).unwrap()),
+ ("-1.2", Number::from_f64(-1.2).unwrap()),
+ ("0.4", Number::from_f64(0.4).unwrap()),
+ ]);
+
+ test_fromstr_parse_err::<Number>(&[
+ (" 1.0", "invalid number at line 1 column 1"),
+ ("1.0 ", "invalid number at line 1 column 4"),
+ ("\t1.0", "invalid number at line 1 column 1"),
+ ("1.0\t", "invalid number at line 1 column 4"),
+ ]);
+
+ #[cfg(feature = "arbitrary_precision")]
+ test_parse_ok(vec![
+ ("1e999", Number::from_string_unchecked("1e999".to_owned())),
+ ("1e+999", Number::from_string_unchecked("1e+999".to_owned())),
+ ("-1e999", Number::from_string_unchecked("-1e999".to_owned())),
+ ("1e-999", Number::from_string_unchecked("1e-999".to_owned())),
+ ("1E999", Number::from_string_unchecked("1E999".to_owned())),
+ ("1E+999", Number::from_string_unchecked("1E+999".to_owned())),
+ ("-1E999", Number::from_string_unchecked("-1E999".to_owned())),
+ ("1E-999", Number::from_string_unchecked("1E-999".to_owned())),
+ ("1E+000", Number::from_string_unchecked("1E+000".to_owned())),
+ (
+ "2.3e999",
+ Number::from_string_unchecked("2.3e999".to_owned()),
+ ),
+ (
+ "-2.3e999",
+ Number::from_string_unchecked("-2.3e999".to_owned()),
+ ),
+ ]);
+}
+
+#[test]
+fn test_parse_string() {
+ test_parse_err::<String>(&[
+ ("\"", "EOF while parsing a string at line 1 column 1"),
+ ("\"lol", "EOF while parsing a string at line 1 column 4"),
+ ("\"lol\"a", "trailing characters at line 1 column 6"),
+ (
+ "\"\\uD83C\\uFFFF\"",
+ "lone leading surrogate in hex escape at line 1 column 13",
+ ),
+ (
+ "\"\n\"",
+ "control character (\\u0000-\\u001F) found while parsing a string at line 2 column 0",
+ ),
+ (
+ "\"\x1F\"",
+ "control character (\\u0000-\\u001F) found while parsing a string at line 1 column 2",
+ ),
+ ]);
+
+ test_parse_slice_err::<String>(&[
+ (
+ &[b'"', 159, 146, 150, b'"'],
+ "invalid unicode code point at line 1 column 5",
+ ),
+ (
+ &[b'"', b'\\', b'n', 159, 146, 150, b'"'],
+ "invalid unicode code point at line 1 column 7",
+ ),
+ (
+ &[b'"', b'\\', b'u', 48, 48, 51],
+ "EOF while parsing a string at line 1 column 6",
+ ),
+ (
+ &[b'"', b'\\', b'u', 250, 48, 51, 48, b'"'],
+ "invalid escape at line 1 column 4",
+ ),
+ (
+ &[b'"', b'\\', b'u', 48, 250, 51, 48, b'"'],
+ "invalid escape at line 1 column 5",
+ ),
+ (
+ &[b'"', b'\\', b'u', 48, 48, 250, 48, b'"'],
+ "invalid escape at line 1 column 6",
+ ),
+ (
+ &[b'"', b'\\', b'u', 48, 48, 51, 250, b'"'],
+ "invalid escape at line 1 column 7",
+ ),
+ (
+ &[b'"', b'\n', b'"'],
+ "control character (\\u0000-\\u001F) found while parsing a string at line 2 column 0",
+ ),
+ (
+ &[b'"', b'\x1F', b'"'],
+ "control character (\\u0000-\\u001F) found while parsing a string at line 1 column 2",
+ ),
+ ]);
+
+ test_parse_ok(vec![
+ ("\"\"", String::new()),
+ ("\"foo\"", "foo".to_string()),
+ (" \"foo\" ", "foo".to_string()),
+ ("\"\\\"\"", "\"".to_string()),
+ ("\"\\b\"", "\x08".to_string()),
+ ("\"\\n\"", "\n".to_string()),
+ ("\"\\r\"", "\r".to_string()),
+ ("\"\\t\"", "\t".to_string()),
+ ("\"\\u12ab\"", "\u{12ab}".to_string()),
+ ("\"\\uAB12\"", "\u{AB12}".to_string()),
+ ("\"\\uD83C\\uDF95\"", "\u{1F395}".to_string()),
+ ]);
+}
+
+#[test]
+fn test_parse_list() {
+ test_parse_err::<Vec<f64>>(&[
+ ("[", "EOF while parsing a list at line 1 column 1"),
+ ("[ ", "EOF while parsing a list at line 1 column 2"),
+ ("[1", "EOF while parsing a list at line 1 column 2"),
+ ("[1,", "EOF while parsing a value at line 1 column 3"),
+ ("[1,]", "trailing comma at line 1 column 4"),
+ ("[1 2]", "expected `,` or `]` at line 1 column 4"),
+ ("[]a", "trailing characters at line 1 column 3"),
+ ]);
+
+ test_parse_ok(vec![
+ ("[]", vec![]),
+ ("[ ]", vec![]),
+ ("[null]", vec![()]),
+ (" [ null ] ", vec![()]),
+ ]);
+
+ test_parse_ok(vec![("[true]", vec![true])]);
+
+ test_parse_ok(vec![("[3,1]", vec![3u64, 1]), (" [ 3 , 1 ] ", vec![3, 1])]);
+
+ test_parse_ok(vec![("[[3], [1, 2]]", vec![vec![3u64], vec![1, 2]])]);
+
+ test_parse_ok(vec![("[1]", (1u64,))]);
+
+ test_parse_ok(vec![("[1, 2]", (1u64, 2u64))]);
+
+ test_parse_ok(vec![("[1, 2, 3]", (1u64, 2u64, 3u64))]);
+
+ test_parse_ok(vec![("[1, [2, 3]]", (1u64, (2u64, 3u64)))]);
+}
+
+#[test]
+fn test_parse_object() {
+ test_parse_err::<BTreeMap<String, u32>>(&[
+ ("{", "EOF while parsing an object at line 1 column 1"),
+ ("{ ", "EOF while parsing an object at line 1 column 2"),
+ ("{1", "key must be a string at line 1 column 2"),
+ ("{ \"a\"", "EOF while parsing an object at line 1 column 5"),
+ ("{\"a\"", "EOF while parsing an object at line 1 column 4"),
+ ("{\"a\" ", "EOF while parsing an object at line 1 column 5"),
+ ("{\"a\" 1", "expected `:` at line 1 column 6"),
+ ("{\"a\":", "EOF while parsing a value at line 1 column 5"),
+ ("{\"a\":1", "EOF while parsing an object at line 1 column 6"),
+ ("{\"a\":1 1", "expected `,` or `}` at line 1 column 8"),
+ ("{\"a\":1,", "EOF while parsing a value at line 1 column 7"),
+ ("{}a", "trailing characters at line 1 column 3"),
+ ]);
+
+ test_parse_ok(vec![
+ ("{}", treemap!()),
+ ("{ }", treemap!()),
+ ("{\"a\":3}", treemap!("a".to_string() => 3u64)),
+ ("{ \"a\" : 3 }", treemap!("a".to_string() => 3)),
+ (
+ "{\"a\":3,\"b\":4}",
+ treemap!("a".to_string() => 3, "b".to_string() => 4),
+ ),
+ (
+ " { \"a\" : 3 , \"b\" : 4 } ",
+ treemap!("a".to_string() => 3, "b".to_string() => 4),
+ ),
+ ]);
+
+ test_parse_ok(vec![(
+ "{\"a\": {\"b\": 3, \"c\": 4}}",
+ treemap!(
+ "a".to_string() => treemap!(
+ "b".to_string() => 3u64,
+ "c".to_string() => 4,
+ ),
+ ),
+ )]);
+
+ test_parse_ok(vec![("{\"c\":null}", treemap!('c' => ()))]);
+}
+
+#[test]
+fn test_parse_struct() {
+ test_parse_err::<Outer>(&[
+ (
+ "5",
+ "invalid type: integer `5`, expected struct Outer at line 1 column 1",
+ ),
+ (
+ "\"hello\"",
+ "invalid type: string \"hello\", expected struct Outer at line 1 column 7",
+ ),
+ (
+ "{\"inner\": true}",
+ "invalid type: boolean `true`, expected a sequence at line 1 column 14",
+ ),
+ ("{}", "missing field `inner` at line 1 column 2"),
+ (
+ r#"{"inner": [{"b": 42, "c": []}]}"#,
+ "missing field `a` at line 1 column 29",
+ ),
+ ]);
+
+ test_parse_ok(vec![
+ (
+ "{
+ \"inner\": []
+ }",
+ Outer { inner: vec![] },
+ ),
+ (
+ "{
+ \"inner\": [
+ { \"a\": null, \"b\": 2, \"c\": [\"abc\", \"xyz\"] }
+ ]
+ }",
+ Outer {
+ inner: vec![Inner {
+ a: (),
+ b: 2,
+ c: vec!["abc".to_string(), "xyz".to_string()],
+ }],
+ },
+ ),
+ ]);
+
+ let v: Outer = from_str(
+ "[
+ [
+ [ null, 2, [\"abc\", \"xyz\"] ]
+ ]
+ ]",
+ )
+ .unwrap();
+
+ assert_eq!(
+ v,
+ Outer {
+ inner: vec![Inner {
+ a: (),
+ b: 2,
+ c: vec!["abc".to_string(), "xyz".to_string()],
+ }],
+ }
+ );
+
+ let j = json!([null, 2, []]);
+ Inner::deserialize(&j).unwrap();
+ Inner::deserialize(j).unwrap();
+}
+
+#[test]
+fn test_parse_option() {
+ test_parse_ok(vec![
+ ("null", None::<String>),
+ ("\"jodhpurs\"", Some("jodhpurs".to_string())),
+ ]);
+
+ #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+ struct Foo {
+ x: Option<isize>,
+ }
+
+ let value: Foo = from_str("{}").unwrap();
+ assert_eq!(value, Foo { x: None });
+
+ test_parse_ok(vec![
+ ("{\"x\": null}", Foo { x: None }),
+ ("{\"x\": 5}", Foo { x: Some(5) }),
+ ]);
+}
+
+#[test]
+fn test_parse_enum_errors() {
+ test_parse_err::<Animal>(
+ &[
+ ("{}", "expected value at line 1 column 2"),
+ ("[]", "expected value at line 1 column 1"),
+ ("\"unknown\"",
+ "unknown variant `unknown`, expected one of `Dog`, `Frog`, `Cat`, `AntHive` at line 1 column 9"),
+ ("{\"unknown\":null}",
+ "unknown variant `unknown`, expected one of `Dog`, `Frog`, `Cat`, `AntHive` at line 1 column 10"),
+ ("{\"Dog\":", "EOF while parsing a value at line 1 column 7"),
+ ("{\"Dog\":}", "expected value at line 1 column 8"),
+ ("{\"Dog\":{}}", "invalid type: map, expected unit at line 1 column 7"),
+ ("\"Frog\"", "invalid type: unit variant, expected tuple variant"),
+ ("\"Frog\" 0 ", "invalid type: unit variant, expected tuple variant"),
+ ("{\"Frog\":{}}",
+ "invalid type: map, expected tuple variant Animal::Frog at line 1 column 8"),
+ ("{\"Cat\":[]}", "invalid length 0, expected struct variant Animal::Cat with 2 elements at line 1 column 9"),
+ ("{\"Cat\":[0]}", "invalid length 1, expected struct variant Animal::Cat with 2 elements at line 1 column 10"),
+ ("{\"Cat\":[0, \"\", 2]}", "trailing characters at line 1 column 16"),
+ ("{\"Cat\":{\"age\": 5, \"name\": \"Kate\", \"foo\":\"bar\"}",
+ "unknown field `foo`, expected `age` or `name` at line 1 column 39"),
+
+ // JSON does not allow trailing commas in data structures
+ ("{\"Cat\":[0, \"Kate\",]}", "trailing comma at line 1 column 19"),
+ ("{\"Cat\":{\"age\": 2, \"name\": \"Kate\",}}",
+ "trailing comma at line 1 column 34"),
+ ],
+ );
+}
+
+#[test]
+fn test_parse_enum() {
+ test_parse_ok(vec![
+ ("\"Dog\"", Animal::Dog),
+ (" \"Dog\" ", Animal::Dog),
+ (
+ "{\"Frog\":[\"Henry\",[]]}",
+ Animal::Frog("Henry".to_string(), vec![]),
+ ),
+ (
+ " { \"Frog\": [ \"Henry\" , [ 349, 102 ] ] } ",
+ Animal::Frog("Henry".to_string(), vec![349, 102]),
+ ),
+ (
+ "{\"Cat\": {\"age\": 5, \"name\": \"Kate\"}}",
+ Animal::Cat {
+ age: 5,
+ name: "Kate".to_string(),
+ },
+ ),
+ (
+ " { \"Cat\" : { \"age\" : 5 , \"name\" : \"Kate\" } } ",
+ Animal::Cat {
+ age: 5,
+ name: "Kate".to_string(),
+ },
+ ),
+ (
+ " { \"AntHive\" : [\"Bob\", \"Stuart\"] } ",
+ Animal::AntHive(vec!["Bob".to_string(), "Stuart".to_string()]),
+ ),
+ ]);
+
+ test_parse_unusual_ok(vec![
+ ("{\"Dog\":null}", Animal::Dog),
+ (" { \"Dog\" : null } ", Animal::Dog),
+ ]);
+
+ test_parse_ok(vec![(
+ concat!(
+ "{",
+ " \"a\": \"Dog\",",
+ " \"b\": {\"Frog\":[\"Henry\", []]}",
+ "}"
+ ),
+ treemap!(
+ "a".to_string() => Animal::Dog,
+ "b".to_string() => Animal::Frog("Henry".to_string(), vec![]),
+ ),
+ )]);
+}
+
+#[test]
+fn test_parse_trailing_whitespace() {
+ test_parse_ok(vec![
+ ("[1, 2] ", vec![1u64, 2]),
+ ("[1, 2]\n", vec![1, 2]),
+ ("[1, 2]\t", vec![1, 2]),
+ ("[1, 2]\t \n", vec![1, 2]),
+ ]);
+}
+
+#[test]
+fn test_multiline_errors() {
+ test_parse_err::<BTreeMap<String, String>>(&[(
+ "{\n \"foo\":\n \"bar\"",
+ "EOF while parsing an object at line 3 column 6",
+ )]);
+}
+
+#[test]
+fn test_missing_option_field() {
+ #[derive(Debug, PartialEq, Deserialize)]
+ struct Foo {
+ x: Option<u32>,
+ }
+
+ let value: Foo = from_str("{}").unwrap();
+ assert_eq!(value, Foo { x: None });
+
+ let value: Foo = from_str("{\"x\": 5}").unwrap();
+ assert_eq!(value, Foo { x: Some(5) });
+
+ let value: Foo = from_value(json!({})).unwrap();
+ assert_eq!(value, Foo { x: None });
+
+ let value: Foo = from_value(json!({"x": 5})).unwrap();
+ assert_eq!(value, Foo { x: Some(5) });
+}
+
+#[test]
+fn test_missing_nonoption_field() {
+ #[derive(Debug, PartialEq, Deserialize)]
+ struct Foo {
+ x: u32,
+ }
+
+ test_parse_err::<Foo>(&[("{}", "missing field `x` at line 1 column 2")]);
+}
+
+#[test]
+fn test_missing_renamed_field() {
+ #[derive(Debug, PartialEq, Deserialize)]
+ struct Foo {
+ #[serde(rename = "y")]
+ x: Option<u32>,
+ }
+
+ let value: Foo = from_str("{}").unwrap();
+ assert_eq!(value, Foo { x: None });
+
+ let value: Foo = from_str("{\"y\": 5}").unwrap();
+ assert_eq!(value, Foo { x: Some(5) });
+
+ let value: Foo = from_value(json!({})).unwrap();
+ assert_eq!(value, Foo { x: None });
+
+ let value: Foo = from_value(json!({"y": 5})).unwrap();
+ assert_eq!(value, Foo { x: Some(5) });
+}
+
+#[test]
+fn test_serialize_seq_with_no_len() {
+ #[derive(Clone, Debug, PartialEq)]
+ struct MyVec<T>(Vec<T>);
+
+ impl<T> ser::Serialize for MyVec<T>
+ where
+ T: ser::Serialize,
+ {
+ fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+ where
+ S: ser::Serializer,
+ {
+ let mut seq = serializer.serialize_seq(None)?;
+ for elem in &self.0 {
+ seq.serialize_element(elem)?;
+ }
+ seq.end()
+ }
+ }
+
+ struct Visitor<T> {
+ marker: PhantomData<MyVec<T>>,
+ }
+
+ impl<'de, T> de::Visitor<'de> for Visitor<T>
+ where
+ T: de::Deserialize<'de>,
+ {
+ type Value = MyVec<T>;
+
+ fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+ formatter.write_str("array")
+ }
+
+ fn visit_unit<E>(self) -> Result<MyVec<T>, E>
+ where
+ E: de::Error,
+ {
+ Ok(MyVec(Vec::new()))
+ }
+
+ fn visit_seq<V>(self, mut visitor: V) -> Result<MyVec<T>, V::Error>
+ where
+ V: de::SeqAccess<'de>,
+ {
+ let mut values = Vec::new();
+
+ while let Some(value) = visitor.next_element()? {
+ values.push(value);
+ }
+
+ Ok(MyVec(values))
+ }
+ }
+
+ impl<'de, T> de::Deserialize<'de> for MyVec<T>
+ where
+ T: de::Deserialize<'de>,
+ {
+ fn deserialize<D>(deserializer: D) -> Result<MyVec<T>, D::Error>
+ where
+ D: de::Deserializer<'de>,
+ {
+ deserializer.deserialize_map(Visitor {
+ marker: PhantomData,
+ })
+ }
+ }
+
+ let mut vec = Vec::new();
+ vec.push(MyVec(Vec::new()));
+ vec.push(MyVec(Vec::new()));
+ let vec: MyVec<MyVec<u32>> = MyVec(vec);
+
+ test_encode_ok(&[(vec.clone(), "[[],[]]")]);
+
+ let s = to_string_pretty(&vec).unwrap();
+ let expected = pretty_str!([[], []]);
+ assert_eq!(s, expected);
+}
+
+#[test]
+fn test_serialize_map_with_no_len() {
+ #[derive(Clone, Debug, PartialEq)]
+ struct MyMap<K, V>(BTreeMap<K, V>);
+
+ impl<K, V> ser::Serialize for MyMap<K, V>
+ where
+ K: ser::Serialize + Ord,
+ V: ser::Serialize,
+ {
+ fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+ where
+ S: ser::Serializer,
+ {
+ let mut map = serializer.serialize_map(None)?;
+ for (k, v) in &self.0 {
+ map.serialize_entry(k, v)?;
+ }
+ map.end()
+ }
+ }
+
+ struct Visitor<K, V> {
+ marker: PhantomData<MyMap<K, V>>,
+ }
+
+ impl<'de, K, V> de::Visitor<'de> for Visitor<K, V>
+ where
+ K: de::Deserialize<'de> + Eq + Ord,
+ V: de::Deserialize<'de>,
+ {
+ type Value = MyMap<K, V>;
+
+ fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+ formatter.write_str("map")
+ }
+
+ fn visit_unit<E>(self) -> Result<MyMap<K, V>, E>
+ where
+ E: de::Error,
+ {
+ Ok(MyMap(BTreeMap::new()))
+ }
+
+ fn visit_map<Visitor>(self, mut visitor: Visitor) -> Result<MyMap<K, V>, Visitor::Error>
+ where
+ Visitor: de::MapAccess<'de>,
+ {
+ let mut values = BTreeMap::new();
+
+ while let Some((key, value)) = visitor.next_entry()? {
+ values.insert(key, value);
+ }
+
+ Ok(MyMap(values))
+ }
+ }
+
+ impl<'de, K, V> de::Deserialize<'de> for MyMap<K, V>
+ where
+ K: de::Deserialize<'de> + Eq + Ord,
+ V: de::Deserialize<'de>,
+ {
+ fn deserialize<D>(deserializer: D) -> Result<MyMap<K, V>, D::Error>
+ where
+ D: de::Deserializer<'de>,
+ {
+ deserializer.deserialize_map(Visitor {
+ marker: PhantomData,
+ })
+ }
+ }
+
+ let mut map = BTreeMap::new();
+ map.insert("a", MyMap(BTreeMap::new()));
+ map.insert("b", MyMap(BTreeMap::new()));
+ let map: MyMap<_, MyMap<u32, u32>> = MyMap(map);
+
+ test_encode_ok(&[(map.clone(), "{\"a\":{},\"b\":{}}")]);
+
+ let s = to_string_pretty(&map).unwrap();
+ let expected = pretty_str!({
+ "a": {},
+ "b": {}
+ });
+ assert_eq!(s, expected);
+}
+
+#[cfg(not(miri))]
+#[test]
+fn test_deserialize_from_stream() {
+ use serde_json::to_writer;
+ use std::net::{TcpListener, TcpStream};
+ use std::thread;
+
+ #[derive(Debug, PartialEq, Serialize, Deserialize)]
+ struct Message {
+ message: String,
+ }
+
+ let l = TcpListener::bind("localhost:20000").unwrap();
+
+ thread::spawn(|| {
+ let l = l;
+ for stream in l.incoming() {
+ let mut stream = stream.unwrap();
+ let read_stream = stream.try_clone().unwrap();
+
+ let mut de = Deserializer::from_reader(read_stream);
+ let request = Message::deserialize(&mut de).unwrap();
+ let response = Message {
+ message: request.message,
+ };
+ to_writer(&mut stream, &response).unwrap();
+ }
+ });
+
+ let mut stream = TcpStream::connect("localhost:20000").unwrap();
+ let request = Message {
+ message: "hi there".to_string(),
+ };
+ to_writer(&mut stream, &request).unwrap();
+
+ let mut de = Deserializer::from_reader(stream);
+ let response = Message::deserialize(&mut de).unwrap();
+
+ assert_eq!(request, response);
+}
+
+#[test]
+fn test_serialize_rejects_adt_keys() {
+ let map = treemap!(
+ Some("a") => 2,
+ Some("b") => 4,
+ None => 6,
+ );
+
+ let err = to_vec(&map).unwrap_err();
+ assert_eq!(err.to_string(), "key must be a string");
+}
+
+#[test]
+fn test_bytes_ser() {
+ let buf = vec![];
+ let bytes = Bytes::new(&buf);
+ assert_eq!(to_string(&bytes).unwrap(), "[]".to_string());
+
+ let buf = vec![1, 2, 3];
+ let bytes = Bytes::new(&buf);
+ assert_eq!(to_string(&bytes).unwrap(), "[1,2,3]".to_string());
+}
+
+#[test]
+fn test_byte_buf_ser() {
+ let bytes = ByteBuf::new();
+ assert_eq!(to_string(&bytes).unwrap(), "[]".to_string());
+
+ let bytes = ByteBuf::from(vec![1, 2, 3]);
+ assert_eq!(to_string(&bytes).unwrap(), "[1,2,3]".to_string());
+}
+
+#[test]
+fn test_byte_buf_de() {
+ let bytes = ByteBuf::new();
+ let v: ByteBuf = from_str("[]").unwrap();
+ assert_eq!(v, bytes);
+
+ let bytes = ByteBuf::from(vec![1, 2, 3]);
+ let v: ByteBuf = from_str("[1, 2, 3]").unwrap();
+ assert_eq!(v, bytes);
+}
+
+#[test]
+fn test_byte_buf_de_lone_surrogate() {
+ let bytes = ByteBuf::from(vec![237, 160, 188]);
+ let v: ByteBuf = from_str(r#""\ud83c""#).unwrap();
+ assert_eq!(v, bytes);
+
+ let bytes = ByteBuf::from(vec![237, 160, 188, 10]);
+ let v: ByteBuf = from_str(r#""\ud83c\n""#).unwrap();
+ assert_eq!(v, bytes);
+
+ let bytes = ByteBuf::from(vec![237, 160, 188, 32]);
+ let v: ByteBuf = from_str(r#""\ud83c ""#).unwrap();
+ assert_eq!(v, bytes);
+
+ let bytes = ByteBuf::from(vec![237, 176, 129]);
+ let v: ByteBuf = from_str(r#""\udc01""#).unwrap();
+ assert_eq!(v, bytes);
+
+ let res = from_str::<ByteBuf>(r#""\ud83c\!""#);
+ assert!(res.is_err());
+
+ let res = from_str::<ByteBuf>(r#""\ud83c\u""#);
+ assert!(res.is_err());
+
+ let res = from_str::<ByteBuf>(r#""\ud83c\ud83c""#);
+ assert!(res.is_err());
+}
+
+#[cfg(feature = "raw_value")]
+#[test]
+fn test_raw_de_lone_surrogate() {
+ use serde_json::value::RawValue;
+
+ assert!(from_str::<Box<RawValue>>(r#""\ud83c""#).is_ok());
+ assert!(from_str::<Box<RawValue>>(r#""\ud83c\n""#).is_ok());
+ assert!(from_str::<Box<RawValue>>(r#""\ud83c ""#).is_ok());
+ assert!(from_str::<Box<RawValue>>(r#""\udc01 ""#).is_ok());
+ assert!(from_str::<Box<RawValue>>(r#""\udc01\!""#).is_err());
+ assert!(from_str::<Box<RawValue>>(r#""\udc01\u""#).is_err());
+ assert!(from_str::<Box<RawValue>>(r#""\ud83c\ud83c""#).is_ok());
+}
+
+#[test]
+fn test_byte_buf_de_multiple() {
+ let s: Vec<ByteBuf> = from_str(r#"["ab\nc", "cd\ne"]"#).unwrap();
+ let a = ByteBuf::from(b"ab\nc".to_vec());
+ let b = ByteBuf::from(b"cd\ne".to_vec());
+ assert_eq!(vec![a, b], s);
+}
+
+#[test]
+fn test_json_pointer() {
+ // Test case taken from https://tools.ietf.org/html/rfc6901#page-5
+ let data: Value = from_str(
+ r#"{
+ "foo": ["bar", "baz"],
+ "": 0,
+ "a/b": 1,
+ "c%d": 2,
+ "e^f": 3,
+ "g|h": 4,
+ "i\\j": 5,
+ "k\"l": 6,
+ " ": 7,
+ "m~n": 8
+ }"#,
+ )
+ .unwrap();
+ assert_eq!(data.pointer("").unwrap(), &data);
+ assert_eq!(data.pointer("/foo").unwrap(), &json!(["bar", "baz"]));
+ assert_eq!(data.pointer("/foo/0").unwrap(), &json!("bar"));
+ assert_eq!(data.pointer("/").unwrap(), &json!(0));
+ assert_eq!(data.pointer("/a~1b").unwrap(), &json!(1));
+ assert_eq!(data.pointer("/c%d").unwrap(), &json!(2));
+ assert_eq!(data.pointer("/e^f").unwrap(), &json!(3));
+ assert_eq!(data.pointer("/g|h").unwrap(), &json!(4));
+ assert_eq!(data.pointer("/i\\j").unwrap(), &json!(5));
+ assert_eq!(data.pointer("/k\"l").unwrap(), &json!(6));
+ assert_eq!(data.pointer("/ ").unwrap(), &json!(7));
+ assert_eq!(data.pointer("/m~0n").unwrap(), &json!(8));
+ // Invalid pointers
+ assert!(data.pointer("/unknown").is_none());
+ assert!(data.pointer("/e^f/ertz").is_none());
+ assert!(data.pointer("/foo/00").is_none());
+ assert!(data.pointer("/foo/01").is_none());
+}
+
+#[test]
+fn test_json_pointer_mut() {
+ // Test case taken from https://tools.ietf.org/html/rfc6901#page-5
+ let mut data: Value = from_str(
+ r#"{
+ "foo": ["bar", "baz"],
+ "": 0,
+ "a/b": 1,
+ "c%d": 2,
+ "e^f": 3,
+ "g|h": 4,
+ "i\\j": 5,
+ "k\"l": 6,
+ " ": 7,
+ "m~n": 8
+ }"#,
+ )
+ .unwrap();
+
+ // Basic pointer checks
+ assert_eq!(data.pointer_mut("/foo").unwrap(), &json!(["bar", "baz"]));
+ assert_eq!(data.pointer_mut("/foo/0").unwrap(), &json!("bar"));
+ assert_eq!(data.pointer_mut("/").unwrap(), 0);
+ assert_eq!(data.pointer_mut("/a~1b").unwrap(), 1);
+ assert_eq!(data.pointer_mut("/c%d").unwrap(), 2);
+ assert_eq!(data.pointer_mut("/e^f").unwrap(), 3);
+ assert_eq!(data.pointer_mut("/g|h").unwrap(), 4);
+ assert_eq!(data.pointer_mut("/i\\j").unwrap(), 5);
+ assert_eq!(data.pointer_mut("/k\"l").unwrap(), 6);
+ assert_eq!(data.pointer_mut("/ ").unwrap(), 7);
+ assert_eq!(data.pointer_mut("/m~0n").unwrap(), 8);
+
+ // Invalid pointers
+ assert!(data.pointer_mut("/unknown").is_none());
+ assert!(data.pointer_mut("/e^f/ertz").is_none());
+ assert!(data.pointer_mut("/foo/00").is_none());
+ assert!(data.pointer_mut("/foo/01").is_none());
+
+ // Mutable pointer checks
+ *data.pointer_mut("/").unwrap() = 100.into();
+ assert_eq!(data.pointer("/").unwrap(), 100);
+ *data.pointer_mut("/foo/0").unwrap() = json!("buzz");
+ assert_eq!(data.pointer("/foo/0").unwrap(), &json!("buzz"));
+
+ // Example of ownership stealing
+ assert_eq!(
+ data.pointer_mut("/a~1b")
+ .map(|m| mem::replace(m, json!(null)))
+ .unwrap(),
+ 1
+ );
+ assert_eq!(data.pointer("/a~1b").unwrap(), &json!(null));
+
+ // Need to compare against a clone so we don't anger the borrow checker
+ // by taking out two references to a mutable value
+ let mut d2 = data.clone();
+ assert_eq!(data.pointer_mut("").unwrap(), &mut d2);
+}
+
+#[test]
+fn test_stack_overflow() {
+ let brackets: String = iter::repeat('[')
+ .take(127)
+ .chain(iter::repeat(']').take(127))
+ .collect();
+ let _: Value = from_str(&brackets).unwrap();
+
+ let brackets = "[".repeat(129);
+ test_parse_err::<Value>(&[(&brackets, "recursion limit exceeded at line 1 column 128")]);
+}
+
+#[test]
+#[cfg(feature = "unbounded_depth")]
+fn test_disable_recursion_limit() {
+ let brackets: String = iter::repeat('[')
+ .take(140)
+ .chain(iter::repeat(']').take(140))
+ .collect();
+
+ let mut deserializer = Deserializer::from_str(&brackets);
+ deserializer.disable_recursion_limit();
+ Value::deserialize(&mut deserializer).unwrap();
+}
+
+#[test]
+fn test_integer_key() {
+ // map with integer keys
+ let map = treemap!(
+ 1 => 2,
+ -1 => 6,
+ );
+ let j = r#"{"-1":6,"1":2}"#;
+ test_encode_ok(&[(&map, j)]);
+ test_parse_ok(vec![(j, map)]);
+
+ test_parse_err::<BTreeMap<i32, ()>>(&[
+ (
+ r#"{"x":null}"#,
+ "invalid value: expected key to be a number in quotes at line 1 column 2",
+ ),
+ (
+ r#"{" 123":null}"#,
+ "invalid value: expected key to be a number in quotes at line 1 column 2",
+ ),
+ (r#"{"123 ":null}"#, "expected `\"` at line 1 column 6"),
+ ]);
+
+ let err = from_value::<BTreeMap<i32, ()>>(json!({" 123":null})).unwrap_err();
+ assert_eq!(
+ err.to_string(),
+ "invalid value: expected key to be a number in quotes",
+ );
+
+ let err = from_value::<BTreeMap<i32, ()>>(json!({"123 ":null})).unwrap_err();
+ assert_eq!(
+ err.to_string(),
+ "invalid value: expected key to be a number in quotes",
+ );
+}
+
+#[test]
+fn test_integer128_key() {
+ let map = treemap! {
+ 100000000000000000000000000000000000000u128 => (),
+ };
+ let j = r#"{"100000000000000000000000000000000000000":null}"#;
+ assert_eq!(to_string(&map).unwrap(), j);
+ assert_eq!(from_str::<BTreeMap<u128, ()>>(j).unwrap(), map);
+}
+
+#[test]
+fn test_float_key() {
+ #[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Clone)]
+ struct Float;
+ impl Serialize for Float {
+ fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+ where
+ S: Serializer,
+ {
+ serializer.serialize_f32(1.23)
+ }
+ }
+ impl<'de> Deserialize<'de> for Float {
+ fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+ where
+ D: de::Deserializer<'de>,
+ {
+ f32::deserialize(deserializer).map(|_| Float)
+ }
+ }
+
+ // map with float key
+ let map = treemap!(Float => "x".to_owned());
+ let j = r#"{"1.23":"x"}"#;
+
+ test_encode_ok(&[(&map, j)]);
+ test_parse_ok(vec![(j, map)]);
+
+ let j = r#"{"x": null}"#;
+ test_parse_err::<BTreeMap<Float, ()>>(&[(
+ j,
+ "invalid value: expected key to be a number in quotes at line 1 column 2",
+ )]);
+}
+
+#[test]
+fn test_deny_non_finite_f32_key() {
+ // We store float bits so that we can derive Ord, and other traits. In a
+ // real context the code might involve a crate like ordered-float.
+
+ #[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Clone)]
+ struct F32Bits(u32);
+ impl Serialize for F32Bits {
+ fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+ where
+ S: Serializer,
+ {
+ serializer.serialize_f32(f32::from_bits(self.0))
+ }
+ }
+
+ let map = treemap!(F32Bits(f32::INFINITY.to_bits()) => "x".to_owned());
+ assert!(serde_json::to_string(&map).is_err());
+ assert!(serde_json::to_value(map).is_err());
+
+ let map = treemap!(F32Bits(f32::NEG_INFINITY.to_bits()) => "x".to_owned());
+ assert!(serde_json::to_string(&map).is_err());
+ assert!(serde_json::to_value(map).is_err());
+
+ let map = treemap!(F32Bits(f32::NAN.to_bits()) => "x".to_owned());
+ assert!(serde_json::to_string(&map).is_err());
+ assert!(serde_json::to_value(map).is_err());
+}
+
+#[test]
+fn test_deny_non_finite_f64_key() {
+ // We store float bits so that we can derive Ord, and other traits. In a
+ // real context the code might involve a crate like ordered-float.
+
+ #[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Clone)]
+ struct F64Bits(u64);
+ impl Serialize for F64Bits {
+ fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+ where
+ S: Serializer,
+ {
+ serializer.serialize_f64(f64::from_bits(self.0))
+ }
+ }
+
+ let map = treemap!(F64Bits(f64::INFINITY.to_bits()) => "x".to_owned());
+ assert!(serde_json::to_string(&map).is_err());
+ assert!(serde_json::to_value(map).is_err());
+
+ let map = treemap!(F64Bits(f64::NEG_INFINITY.to_bits()) => "x".to_owned());
+ assert!(serde_json::to_string(&map).is_err());
+ assert!(serde_json::to_value(map).is_err());
+
+ let map = treemap!(F64Bits(f64::NAN.to_bits()) => "x".to_owned());
+ assert!(serde_json::to_string(&map).is_err());
+ assert!(serde_json::to_value(map).is_err());
+}
+
+#[test]
+fn test_boolean_key() {
+ let map = treemap!(false => 0, true => 1);
+ let j = r#"{"false":0,"true":1}"#;
+ test_encode_ok(&[(&map, j)]);
+ test_parse_ok(vec![(j, map)]);
+}
+
+#[test]
+fn test_borrowed_key() {
+ let map: BTreeMap<&str, ()> = from_str("{\"borrowed\":null}").unwrap();
+ let expected = treemap! { "borrowed" => () };
+ assert_eq!(map, expected);
+
+ #[derive(Deserialize, Debug, Ord, PartialOrd, Eq, PartialEq)]
+ struct NewtypeStr<'a>(&'a str);
+
+ let map: BTreeMap<NewtypeStr, ()> = from_str("{\"borrowed\":null}").unwrap();
+ let expected = treemap! { NewtypeStr("borrowed") => () };
+ assert_eq!(map, expected);
+}
+
+#[test]
+fn test_effectively_string_keys() {
+ #[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Clone, Serialize, Deserialize)]
+ enum Enum {
+ One,
+ Two,
+ }
+ let map = treemap! {
+ Enum::One => 1,
+ Enum::Two => 2,
+ };
+ let expected = r#"{"One":1,"Two":2}"#;
+ test_encode_ok(&[(&map, expected)]);
+ test_parse_ok(vec![(expected, map)]);
+
+ #[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Clone, Serialize, Deserialize)]
+ struct Wrapper(String);
+ let map = treemap! {
+ Wrapper("zero".to_owned()) => 0,
+ Wrapper("one".to_owned()) => 1,
+ };
+ let expected = r#"{"one":1,"zero":0}"#;
+ test_encode_ok(&[(&map, expected)]);
+ test_parse_ok(vec![(expected, map)]);
+}
+
+#[test]
+fn test_json_macro() {
+ // This is tricky because the <...> is not a single TT and the comma inside
+ // looks like an array element separator.
+ let _ = json!([
+ <Result<(), ()> as Clone>::clone(&Ok(())),
+ <Result<(), ()> as Clone>::clone(&Err(()))
+ ]);
+
+ // Same thing but in the map values.
+ let _ = json!({
+ "ok": <Result<(), ()> as Clone>::clone(&Ok(())),
+ "err": <Result<(), ()> as Clone>::clone(&Err(()))
+ });
+
+ // It works in map keys but only if they are parenthesized.
+ let _ = json!({
+ (<Result<&str, ()> as Clone>::clone(&Ok("")).unwrap()): "ok",
+ (<Result<(), &str> as Clone>::clone(&Err("")).unwrap_err()): "err"
+ });
+
+ #[deny(unused_results)]
+ let _ = json!({ "architecture": [true, null] });
+}
+
+#[test]
+fn issue_220() {
+ #[derive(Debug, PartialEq, Eq, Deserialize)]
+ enum E {
+ V(u8),
+ }
+
+ assert!(from_str::<E>(r#" "V"0 "#).is_err());
+
+ assert_eq!(from_str::<E>(r#"{"V": 0}"#).unwrap(), E::V(0));
+}
+
+macro_rules! number_partialeq_ok {
+ ($($n:expr)*) => {
+ $(
+ let value = to_value($n).unwrap();
+ let s = $n.to_string();
+ assert_eq!(value, $n);
+ assert_eq!($n, value);
+ assert_ne!(value, s);
+ )*
+ }
+}
+
+#[test]
+fn test_partialeq_number() {
+ number_partialeq_ok!(0 1 100
+ i8::MIN i8::MAX i16::MIN i16::MAX i32::MIN i32::MAX i64::MIN i64::MAX
+ u8::MIN u8::MAX u16::MIN u16::MAX u32::MIN u32::MAX u64::MIN u64::MAX
+ f32::MIN f32::MAX f32::MIN_EXP f32::MAX_EXP f32::MIN_POSITIVE
+ f64::MIN f64::MAX f64::MIN_EXP f64::MAX_EXP f64::MIN_POSITIVE
+ f32::consts::E f32::consts::PI f32::consts::LN_2 f32::consts::LOG2_E
+ f64::consts::E f64::consts::PI f64::consts::LN_2 f64::consts::LOG2_E
+ );
+}
+
+#[test]
+#[cfg(integer128)]
+#[cfg(feature = "arbitrary_precision")]
+fn test_partialeq_integer128() {
+ number_partialeq_ok!(i128::MIN i128::MAX u128::MIN u128::MAX)
+}
+
+#[test]
+fn test_partialeq_string() {
+ let v = to_value("42").unwrap();
+ assert_eq!(v, "42");
+ assert_eq!("42", v);
+ assert_ne!(v, 42);
+ assert_eq!(v, String::from("42"));
+ assert_eq!(String::from("42"), v);
+}
+
+#[test]
+fn test_partialeq_bool() {
+ let v = to_value(true).unwrap();
+ assert_eq!(v, true);
+ assert_eq!(true, v);
+ assert_ne!(v, false);
+ assert_ne!(v, "true");
+ assert_ne!(v, 1);
+ assert_ne!(v, 0);
+}
+
+struct FailReader(io::ErrorKind);
+
+impl io::Read for FailReader {
+ fn read(&mut self, _: &mut [u8]) -> io::Result<usize> {
+ Err(io::Error::new(self.0, "oh no!"))
+ }
+}
+
+#[test]
+fn test_category() {
+ assert!(from_str::<String>("123").unwrap_err().is_data());
+
+ assert!(from_str::<String>("]").unwrap_err().is_syntax());
+
+ assert!(from_str::<String>("").unwrap_err().is_eof());
+ assert!(from_str::<String>("\"").unwrap_err().is_eof());
+ assert!(from_str::<String>("\"\\").unwrap_err().is_eof());
+ assert!(from_str::<String>("\"\\u").unwrap_err().is_eof());
+ assert!(from_str::<String>("\"\\u0").unwrap_err().is_eof());
+ assert!(from_str::<String>("\"\\u00").unwrap_err().is_eof());
+ assert!(from_str::<String>("\"\\u000").unwrap_err().is_eof());
+
+ assert!(from_str::<Vec<usize>>("[").unwrap_err().is_eof());
+ assert!(from_str::<Vec<usize>>("[0").unwrap_err().is_eof());
+ assert!(from_str::<Vec<usize>>("[0,").unwrap_err().is_eof());
+
+ assert!(from_str::<BTreeMap<String, usize>>("{")
+ .unwrap_err()
+ .is_eof());
+ assert!(from_str::<BTreeMap<String, usize>>("{\"k\"")
+ .unwrap_err()
+ .is_eof());
+ assert!(from_str::<BTreeMap<String, usize>>("{\"k\":")
+ .unwrap_err()
+ .is_eof());
+ assert!(from_str::<BTreeMap<String, usize>>("{\"k\":0")
+ .unwrap_err()
+ .is_eof());
+ assert!(from_str::<BTreeMap<String, usize>>("{\"k\":0,")
+ .unwrap_err()
+ .is_eof());
+
+ let fail = FailReader(io::ErrorKind::NotConnected);
+ assert!(from_reader::<_, String>(fail).unwrap_err().is_io());
+}
+
+#[test]
+// Clippy false positive: https://github.com/Manishearth/rust-clippy/issues/292
+#[allow(clippy::needless_lifetimes)]
+fn test_into_io_error() {
+ fn io_error<'de, T: Deserialize<'de> + Debug>(j: &'static str) -> io::Error {
+ from_str::<T>(j).unwrap_err().into()
+ }
+
+ assert_eq!(
+ io_error::<String>("\"\\u").kind(),
+ io::ErrorKind::UnexpectedEof
+ );
+ assert_eq!(io_error::<String>("0").kind(), io::ErrorKind::InvalidData);
+ assert_eq!(io_error::<String>("]").kind(), io::ErrorKind::InvalidData);
+
+ let fail = FailReader(io::ErrorKind::NotConnected);
+ let io_err: io::Error = from_reader::<_, u8>(fail).unwrap_err().into();
+ assert_eq!(io_err.kind(), io::ErrorKind::NotConnected);
+}
+
+#[test]
+fn test_borrow() {
+ let s: &str = from_str("\"borrowed\"").unwrap();
+ assert_eq!("borrowed", s);
+
+ let s: &str = from_slice(b"\"borrowed\"").unwrap();
+ assert_eq!("borrowed", s);
+}
+
+#[test]
+fn null_invalid_type() {
+ let err = serde_json::from_str::<String>("null").unwrap_err();
+ assert_eq!(
+ format!("{}", err),
+ String::from("invalid type: null, expected a string at line 1 column 4")
+ );
+}
+
+#[test]
+fn test_integer128() {
+ let signed = &[i128::min_value(), -1, 0, 1, i128::max_value()];
+ let unsigned = &[0, 1, u128::max_value()];
+
+ for integer128 in signed {
+ let expected = integer128.to_string();
+ assert_eq!(to_string(integer128).unwrap(), expected);
+ assert_eq!(from_str::<i128>(&expected).unwrap(), *integer128);
+ }
+
+ for integer128 in unsigned {
+ let expected = integer128.to_string();
+ assert_eq!(to_string(integer128).unwrap(), expected);
+ assert_eq!(from_str::<u128>(&expected).unwrap(), *integer128);
+ }
+
+ test_parse_err::<i128>(&[
+ (
+ "-170141183460469231731687303715884105729",
+ "number out of range at line 1 column 40",
+ ),
+ (
+ "170141183460469231731687303715884105728",
+ "number out of range at line 1 column 39",
+ ),
+ ]);
+
+ test_parse_err::<u128>(&[
+ ("-1", "number out of range at line 1 column 1"),
+ (
+ "340282366920938463463374607431768211456",
+ "number out of range at line 1 column 39",
+ ),
+ ]);
+}
+
+#[test]
+fn test_integer128_to_value() {
+ let signed = &[i128::from(i64::min_value()), i128::from(u64::max_value())];
+ let unsigned = &[0, u128::from(u64::max_value())];
+
+ for integer128 in signed {
+ let expected = integer128.to_string();
+ assert_eq!(to_value(integer128).unwrap().to_string(), expected);
+ }
+
+ for integer128 in unsigned {
+ let expected = integer128.to_string();
+ assert_eq!(to_value(integer128).unwrap().to_string(), expected);
+ }
+
+ if !cfg!(feature = "arbitrary_precision") {
+ let err = to_value(u128::from(u64::max_value()) + 1).unwrap_err();
+ assert_eq!(err.to_string(), "number out of range");
+ }
+}
+
+#[cfg(feature = "raw_value")]
+#[test]
+fn test_borrowed_raw_value() {
+ #[derive(Serialize, Deserialize)]
+ struct Wrapper<'a> {
+ a: i8,
+ #[serde(borrow)]
+ b: &'a RawValue,
+ c: i8,
+ }
+
+ let wrapper_from_str: Wrapper =
+ serde_json::from_str(r#"{"a": 1, "b": {"foo": 2}, "c": 3}"#).unwrap();
+ assert_eq!(r#"{"foo": 2}"#, wrapper_from_str.b.get());
+
+ let wrapper_to_string = serde_json::to_string(&wrapper_from_str).unwrap();
+ assert_eq!(r#"{"a":1,"b":{"foo": 2},"c":3}"#, wrapper_to_string);
+
+ let wrapper_to_value = serde_json::to_value(&wrapper_from_str).unwrap();
+ assert_eq!(json!({"a": 1, "b": {"foo": 2}, "c": 3}), wrapper_to_value);
+
+ let array_from_str: Vec<&RawValue> =
+ serde_json::from_str(r#"["a", 42, {"foo": "bar"}, null]"#).unwrap();
+ assert_eq!(r#""a""#, array_from_str[0].get());
+ assert_eq!(r#"42"#, array_from_str[1].get());
+ assert_eq!(r#"{"foo": "bar"}"#, array_from_str[2].get());
+ assert_eq!(r#"null"#, array_from_str[3].get());
+
+ let array_to_string = serde_json::to_string(&array_from_str).unwrap();
+ assert_eq!(r#"["a",42,{"foo": "bar"},null]"#, array_to_string);
+}
+
+#[cfg(feature = "raw_value")]
+#[test]
+fn test_raw_value_in_map_key() {
+ #[derive(RefCast)]
+ #[repr(transparent)]
+ struct RawMapKey(RawValue);
+
+ impl<'de> Deserialize<'de> for &'de RawMapKey {
+ fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+ where
+ D: serde::Deserializer<'de>,
+ {
+ let raw_value = <&RawValue>::deserialize(deserializer)?;
+ Ok(RawMapKey::ref_cast(raw_value))
+ }
+ }
+
+ impl PartialEq for RawMapKey {
+ fn eq(&self, other: &Self) -> bool {
+ self.0.get() == other.0.get()
+ }
+ }
+
+ impl Eq for RawMapKey {}
+
+ impl Hash for RawMapKey {
+ fn hash<H: Hasher>(&self, hasher: &mut H) {
+ self.0.get().hash(hasher);
+ }
+ }
+
+ let map_from_str: HashMap<&RawMapKey, &RawValue> =
+ serde_json::from_str(r#" {"\\k":"\\v"} "#).unwrap();
+ let (map_k, map_v) = map_from_str.into_iter().next().unwrap();
+ assert_eq!("\"\\\\k\"", map_k.0.get());
+ assert_eq!("\"\\\\v\"", map_v.get());
+}
+
+#[cfg(feature = "raw_value")]
+#[test]
+fn test_boxed_raw_value() {
+ #[derive(Serialize, Deserialize)]
+ struct Wrapper {
+ a: i8,
+ b: Box<RawValue>,
+ c: i8,
+ }
+
+ let wrapper_from_str: Wrapper =
+ serde_json::from_str(r#"{"a": 1, "b": {"foo": 2}, "c": 3}"#).unwrap();
+ assert_eq!(r#"{"foo": 2}"#, wrapper_from_str.b.get());
+
+ let wrapper_from_reader: Wrapper =
+ serde_json::from_reader(br#"{"a": 1, "b": {"foo": 2}, "c": 3}"#.as_ref()).unwrap();
+ assert_eq!(r#"{"foo": 2}"#, wrapper_from_reader.b.get());
+
+ let wrapper_from_value: Wrapper =
+ serde_json::from_value(json!({"a": 1, "b": {"foo": 2}, "c": 3})).unwrap();
+ assert_eq!(r#"{"foo":2}"#, wrapper_from_value.b.get());
+
+ let wrapper_to_string = serde_json::to_string(&wrapper_from_str).unwrap();
+ assert_eq!(r#"{"a":1,"b":{"foo": 2},"c":3}"#, wrapper_to_string);
+
+ let wrapper_to_value = serde_json::to_value(&wrapper_from_str).unwrap();
+ assert_eq!(json!({"a": 1, "b": {"foo": 2}, "c": 3}), wrapper_to_value);
+
+ let array_from_str: Vec<Box<RawValue>> =
+ serde_json::from_str(r#"["a", 42, {"foo": "bar"}, null]"#).unwrap();
+ assert_eq!(r#""a""#, array_from_str[0].get());
+ assert_eq!(r#"42"#, array_from_str[1].get());
+ assert_eq!(r#"{"foo": "bar"}"#, array_from_str[2].get());
+ assert_eq!(r#"null"#, array_from_str[3].get());
+
+ let array_from_reader: Vec<Box<RawValue>> =
+ serde_json::from_reader(br#"["a", 42, {"foo": "bar"}, null]"#.as_ref()).unwrap();
+ assert_eq!(r#""a""#, array_from_reader[0].get());
+ assert_eq!(r#"42"#, array_from_reader[1].get());
+ assert_eq!(r#"{"foo": "bar"}"#, array_from_reader[2].get());
+ assert_eq!(r#"null"#, array_from_reader[3].get());
+
+ let array_to_string = serde_json::to_string(&array_from_str).unwrap();
+ assert_eq!(r#"["a",42,{"foo": "bar"},null]"#, array_to_string);
+}
+
+#[cfg(feature = "raw_value")]
+#[test]
+fn test_raw_invalid_utf8() {
+ let j = &[b'"', b'\xCE', b'\xF8', b'"'];
+ let value_err = serde_json::from_slice::<Value>(j).unwrap_err();
+ let raw_value_err = serde_json::from_slice::<Box<RawValue>>(j).unwrap_err();
+
+ assert_eq!(
+ value_err.to_string(),
+ "invalid unicode code point at line 1 column 4",
+ );
+ assert_eq!(
+ raw_value_err.to_string(),
+ "invalid unicode code point at line 1 column 4",
+ );
+}
+
+#[cfg(feature = "raw_value")]
+#[test]
+fn test_serialize_unsized_value_to_raw_value() {
+ assert_eq!(
+ serde_json::value::to_raw_value("foobar").unwrap().get(),
+ r#""foobar""#,
+ );
+}
+
+#[test]
+fn test_borrow_in_map_key() {
+ #[derive(Deserialize, Debug)]
+ struct Outer {
+ #[allow(dead_code)]
+ map: BTreeMap<MyMapKey, ()>,
+ }
+
+ #[derive(Ord, PartialOrd, Eq, PartialEq, Debug)]
+ struct MyMapKey(usize);
+
+ impl<'de> Deserialize<'de> for MyMapKey {
+ fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+ where
+ D: de::Deserializer<'de>,
+ {
+ let s = <&str>::deserialize(deserializer)?;
+ let n = s.parse().map_err(de::Error::custom)?;
+ Ok(MyMapKey(n))
+ }
+ }
+
+ let value = json!({ "map": { "1": null } });
+ Outer::deserialize(&value).unwrap();
+}
+
+#[test]
+fn test_value_into_deserializer() {
+ #[derive(Deserialize)]
+ struct Outer {
+ inner: Inner,
+ }
+
+ #[derive(Deserialize)]
+ struct Inner {
+ string: String,
+ }
+
+ let mut map = BTreeMap::new();
+ map.insert("inner", json!({ "string": "Hello World" }));
+
+ let outer = Outer::deserialize(serde::de::value::MapDeserializer::new(
+ map.iter().map(|(k, v)| (*k, v)),
+ ))
+ .unwrap();
+ assert_eq!(outer.inner.string, "Hello World");
+
+ let outer = Outer::deserialize(map.into_deserializer()).unwrap();
+ assert_eq!(outer.inner.string, "Hello World");
+}
+
+#[test]
+fn hash_positive_and_negative_zero() {
+ let rand = std::hash::RandomState::new();
+
+ let k1 = serde_json::from_str::<Number>("0.0").unwrap();
+ let k2 = serde_json::from_str::<Number>("-0.0").unwrap();
+ if cfg!(feature = "arbitrary_precision") {
+ assert_ne!(k1, k2);
+ assert_ne!(rand.hash_one(k1), rand.hash_one(k2));
+ } else {
+ assert_eq!(k1, k2);
+ assert_eq!(rand.hash_one(k1), rand.hash_one(k2));
+ }
+}
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