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Diffstat (limited to 'compiler/rustc_serialize/tests/json.rs')
| -rw-r--r-- | compiler/rustc_serialize/tests/json.rs | 1269 |
1 files changed, 1269 insertions, 0 deletions
diff --git a/compiler/rustc_serialize/tests/json.rs b/compiler/rustc_serialize/tests/json.rs new file mode 100644 index 00000000000..e3a823127d9 --- /dev/null +++ b/compiler/rustc_serialize/tests/json.rs @@ -0,0 +1,1269 @@ +#![allow(rustc::internal)] + +use json::DecoderError::*; +use json::ErrorCode::*; +use json::Json::*; +use json::JsonEvent::*; +use json::ParserError::*; +use json::{ + from_str, DecodeResult, Decoder, DecoderError, Encoder, EncoderError, Json, JsonEvent, Parser, + StackElement, +}; +use rustc_macros::{Decodable, Encodable}; +use rustc_serialize::json; +use rustc_serialize::{Decodable, Encodable}; + +use std::collections::BTreeMap; +use std::io::prelude::*; +use std::string; +use Animal::*; + +#[derive(Decodable, Eq, PartialEq, Debug)] +struct OptionData { + opt: Option<usize>, +} + +#[test] +fn test_decode_option_none() { + let s = "{}"; + let obj: OptionData = json::decode(s).unwrap(); + assert_eq!(obj, OptionData { opt: None }); +} + +#[test] +fn test_decode_option_some() { + let s = "{ \"opt\": 10 }"; + let obj: OptionData = json::decode(s).unwrap(); + assert_eq!(obj, OptionData { opt: Some(10) }); +} + +#[test] +fn test_decode_option_malformed() { + check_err::<OptionData>( + "{ \"opt\": [] }", + ExpectedError("Number".to_string(), "[]".to_string()), + ); + check_err::<OptionData>( + "{ \"opt\": false }", + ExpectedError("Number".to_string(), "false".to_string()), + ); +} + +#[derive(PartialEq, Encodable, Decodable, Debug)] +enum Animal { + Dog, + Frog(string::String, isize), +} + +#[derive(PartialEq, Encodable, Decodable, Debug)] +struct Inner { + a: (), + b: usize, + c: Vec<string::String>, +} + +#[derive(PartialEq, Encodable, Decodable, Debug)] +struct Outer { + inner: Vec<Inner>, +} + +fn mk_object(items: &[(string::String, Json)]) -> Json { + let mut d = BTreeMap::new(); + + for item in items { + match *item { + (ref key, ref value) => { + d.insert((*key).clone(), (*value).clone()); + } + } + } + + Object(d) +} + +#[test] +fn test_from_str_trait() { + let s = "null"; + assert!(s.parse::<Json>().unwrap() == s.parse().unwrap()); +} + +#[test] +fn test_write_null() { + assert_eq!(Null.to_string(), "null"); + assert_eq!(Null.pretty().to_string(), "null"); +} + +#[test] +fn test_write_i64() { + assert_eq!(U64(0).to_string(), "0"); + assert_eq!(U64(0).pretty().to_string(), "0"); + + assert_eq!(U64(1234).to_string(), "1234"); + assert_eq!(U64(1234).pretty().to_string(), "1234"); + + assert_eq!(I64(-5678).to_string(), "-5678"); + assert_eq!(I64(-5678).pretty().to_string(), "-5678"); + + assert_eq!(U64(7650007200025252000).to_string(), "7650007200025252000"); + assert_eq!(U64(7650007200025252000).pretty().to_string(), "7650007200025252000"); +} + +#[test] +fn test_write_f64() { + assert_eq!(F64(3.0).to_string(), "3.0"); + assert_eq!(F64(3.0).pretty().to_string(), "3.0"); + + assert_eq!(F64(3.1).to_string(), "3.1"); + assert_eq!(F64(3.1).pretty().to_string(), "3.1"); + + assert_eq!(F64(-1.5).to_string(), "-1.5"); + assert_eq!(F64(-1.5).pretty().to_string(), "-1.5"); + + assert_eq!(F64(0.5).to_string(), "0.5"); + assert_eq!(F64(0.5).pretty().to_string(), "0.5"); + + assert_eq!(F64(f64::NAN).to_string(), "null"); + assert_eq!(F64(f64::NAN).pretty().to_string(), "null"); + + assert_eq!(F64(f64::INFINITY).to_string(), "null"); + assert_eq!(F64(f64::INFINITY).pretty().to_string(), "null"); + + assert_eq!(F64(f64::NEG_INFINITY).to_string(), "null"); + assert_eq!(F64(f64::NEG_INFINITY).pretty().to_string(), "null"); +} + +#[test] +fn test_write_str() { + assert_eq!(String("".to_string()).to_string(), "\"\""); + assert_eq!(String("".to_string()).pretty().to_string(), "\"\""); + + assert_eq!(String("homura".to_string()).to_string(), "\"homura\""); + assert_eq!(String("madoka".to_string()).pretty().to_string(), "\"madoka\""); +} + +#[test] +fn test_write_bool() { + assert_eq!(Boolean(true).to_string(), "true"); + assert_eq!(Boolean(true).pretty().to_string(), "true"); + + assert_eq!(Boolean(false).to_string(), "false"); + assert_eq!(Boolean(false).pretty().to_string(), "false"); +} + +#[test] +fn test_write_array() { + assert_eq!(Array(vec![]).to_string(), "[]"); + assert_eq!(Array(vec![]).pretty().to_string(), "[]"); + + assert_eq!(Array(vec![Boolean(true)]).to_string(), "[true]"); + assert_eq!( + Array(vec![Boolean(true)]).pretty().to_string(), + "\ + [\n \ + true\n\ + ]" + ); + + let long_test_array = + Array(vec![Boolean(false), Null, Array(vec![String("foo\nbar".to_string()), F64(3.5)])]); + + assert_eq!(long_test_array.to_string(), "[false,null,[\"foo\\nbar\",3.5]]"); + assert_eq!( + long_test_array.pretty().to_string(), + "\ + [\n \ + false,\n \ + null,\n \ + [\n \ + \"foo\\nbar\",\n \ + 3.5\n \ + ]\n\ + ]" + ); +} + +#[test] +fn test_write_object() { + assert_eq!(mk_object(&[]).to_string(), "{}"); + assert_eq!(mk_object(&[]).pretty().to_string(), "{}"); + + assert_eq!(mk_object(&[("a".to_string(), Boolean(true))]).to_string(), "{\"a\":true}"); + assert_eq!( + mk_object(&[("a".to_string(), Boolean(true))]).pretty().to_string(), + "\ + {\n \ + \"a\": true\n\ + }" + ); + + let complex_obj = mk_object(&[( + "b".to_string(), + Array(vec![ + mk_object(&[("c".to_string(), String("\x0c\r".to_string()))]), + mk_object(&[("d".to_string(), String("".to_string()))]), + ]), + )]); + + assert_eq!( + complex_obj.to_string(), + "{\ + \"b\":[\ + {\"c\":\"\\f\\r\"},\ + {\"d\":\"\"}\ + ]\ + }" + ); + assert_eq!( + complex_obj.pretty().to_string(), + "\ + {\n \ + \"b\": [\n \ + {\n \ + \"c\": \"\\f\\r\"\n \ + },\n \ + {\n \ + \"d\": \"\"\n \ + }\n \ + ]\n\ + }" + ); + + let a = mk_object(&[ + ("a".to_string(), Boolean(true)), + ( + "b".to_string(), + Array(vec![ + mk_object(&[("c".to_string(), String("\x0c\r".to_string()))]), + mk_object(&[("d".to_string(), String("".to_string()))]), + ]), + ), + ]); + + // We can't compare the strings directly because the object fields be + // printed in a different order. + assert_eq!(a.clone(), a.to_string().parse().unwrap()); + assert_eq!(a.clone(), a.pretty().to_string().parse().unwrap()); +} + +#[test] +fn test_write_enum() { + let animal = Dog; + assert_eq!(json::as_json(&animal).to_string(), "\"Dog\""); + assert_eq!(json::as_pretty_json(&animal).to_string(), "\"Dog\""); + + let animal = Frog("Henry".to_string(), 349); + assert_eq!( + json::as_json(&animal).to_string(), + "{\"variant\":\"Frog\",\"fields\":[\"Henry\",349]}" + ); + assert_eq!( + json::as_pretty_json(&animal).to_string(), + "{\n \ + \"variant\": \"Frog\",\n \ + \"fields\": [\n \ + \"Henry\",\n \ + 349\n \ + ]\n\ + }" + ); +} + +macro_rules! check_encoder_for_simple { + ($value:expr, $expected:expr) => {{ + let s = json::as_json(&$value).to_string(); + assert_eq!(s, $expected); + + let s = json::as_pretty_json(&$value).to_string(); + assert_eq!(s, $expected); + }}; +} + +#[test] +fn test_write_some() { + check_encoder_for_simple!(Some("jodhpurs".to_string()), "\"jodhpurs\""); +} + +#[test] +fn test_write_none() { + check_encoder_for_simple!(None::<string::String>, "null"); +} + +#[test] +fn test_write_char() { + check_encoder_for_simple!('a', "\"a\""); + check_encoder_for_simple!('\t', "\"\\t\""); + check_encoder_for_simple!('\u{0000}', "\"\\u0000\""); + check_encoder_for_simple!('\u{001b}', "\"\\u001b\""); + check_encoder_for_simple!('\u{007f}', "\"\\u007f\""); + check_encoder_for_simple!('\u{00a0}', "\"\u{00a0}\""); + check_encoder_for_simple!('\u{abcd}', "\"\u{abcd}\""); + check_encoder_for_simple!('\u{10ffff}', "\"\u{10ffff}\""); +} + +#[test] +fn test_trailing_characters() { + assert_eq!(from_str("nulla"), Err(SyntaxError(TrailingCharacters, 1, 5))); + assert_eq!(from_str("truea"), Err(SyntaxError(TrailingCharacters, 1, 5))); + assert_eq!(from_str("falsea"), Err(SyntaxError(TrailingCharacters, 1, 6))); + assert_eq!(from_str("1a"), Err(SyntaxError(TrailingCharacters, 1, 2))); + assert_eq!(from_str("[]a"), Err(SyntaxError(TrailingCharacters, 1, 3))); + assert_eq!(from_str("{}a"), Err(SyntaxError(TrailingCharacters, 1, 3))); +} + +#[test] +fn test_read_identifiers() { + assert_eq!(from_str("n"), Err(SyntaxError(InvalidSyntax, 1, 2))); + assert_eq!(from_str("nul"), Err(SyntaxError(InvalidSyntax, 1, 4))); + assert_eq!(from_str("t"), Err(SyntaxError(InvalidSyntax, 1, 2))); + assert_eq!(from_str("truz"), Err(SyntaxError(InvalidSyntax, 1, 4))); + assert_eq!(from_str("f"), Err(SyntaxError(InvalidSyntax, 1, 2))); + assert_eq!(from_str("faz"), Err(SyntaxError(InvalidSyntax, 1, 3))); + + assert_eq!(from_str("null"), Ok(Null)); + assert_eq!(from_str("true"), Ok(Boolean(true))); + assert_eq!(from_str("false"), Ok(Boolean(false))); + assert_eq!(from_str(" null "), Ok(Null)); + assert_eq!(from_str(" true "), Ok(Boolean(true))); + assert_eq!(from_str(" false "), Ok(Boolean(false))); +} + +#[test] +fn test_decode_identifiers() { + let v: () = json::decode("null").unwrap(); + assert_eq!(v, ()); + + let v: bool = json::decode("true").unwrap(); + assert_eq!(v, true); + + let v: bool = json::decode("false").unwrap(); + assert_eq!(v, false); +} + +#[test] +fn test_read_number() { + assert_eq!(from_str("+"), Err(SyntaxError(InvalidSyntax, 1, 1))); + assert_eq!(from_str("."), Err(SyntaxError(InvalidSyntax, 1, 1))); + assert_eq!(from_str("NaN"), Err(SyntaxError(InvalidSyntax, 1, 1))); + assert_eq!(from_str("-"), Err(SyntaxError(InvalidNumber, 1, 2))); + assert_eq!(from_str("00"), Err(SyntaxError(InvalidNumber, 1, 2))); + assert_eq!(from_str("1."), Err(SyntaxError(InvalidNumber, 1, 3))); + assert_eq!(from_str("1e"), Err(SyntaxError(InvalidNumber, 1, 3))); + assert_eq!(from_str("1e+"), Err(SyntaxError(InvalidNumber, 1, 4))); + + assert_eq!(from_str("18446744073709551616"), Err(SyntaxError(InvalidNumber, 1, 20))); + assert_eq!(from_str("-9223372036854775809"), Err(SyntaxError(InvalidNumber, 1, 21))); + + assert_eq!(from_str("3"), Ok(U64(3))); + assert_eq!(from_str("3.1"), Ok(F64(3.1))); + assert_eq!(from_str("-1.2"), Ok(F64(-1.2))); + assert_eq!(from_str("0.4"), Ok(F64(0.4))); + assert_eq!(from_str("0.4e5"), Ok(F64(0.4e5))); + assert_eq!(from_str("0.4e+15"), Ok(F64(0.4e15))); + assert_eq!(from_str("0.4e-01"), Ok(F64(0.4e-01))); + assert_eq!(from_str(" 3 "), Ok(U64(3))); + + assert_eq!(from_str("-9223372036854775808"), Ok(I64(i64::MIN))); + assert_eq!(from_str("9223372036854775807"), Ok(U64(i64::MAX as u64))); + assert_eq!(from_str("18446744073709551615"), Ok(U64(u64::MAX))); +} + +#[test] +fn test_decode_numbers() { + let v: f64 = json::decode("3").unwrap(); + assert_eq!(v, 3.0); + + let v: f64 = json::decode("3.1").unwrap(); + assert_eq!(v, 3.1); + + let v: f64 = json::decode("-1.2").unwrap(); + assert_eq!(v, -1.2); + + let v: f64 = json::decode("0.4").unwrap(); + assert_eq!(v, 0.4); + + let v: f64 = json::decode("0.4e5").unwrap(); + assert_eq!(v, 0.4e5); + + let v: f64 = json::decode("0.4e15").unwrap(); + assert_eq!(v, 0.4e15); + + let v: f64 = json::decode("0.4e-01").unwrap(); + assert_eq!(v, 0.4e-01); + + let v: u64 = json::decode("0").unwrap(); + assert_eq!(v, 0); + + let v: u64 = json::decode("18446744073709551615").unwrap(); + assert_eq!(v, u64::MAX); + + let v: i64 = json::decode("-9223372036854775808").unwrap(); + assert_eq!(v, i64::MIN); + + let v: i64 = json::decode("9223372036854775807").unwrap(); + assert_eq!(v, i64::MAX); + + let res: DecodeResult<i64> = json::decode("765.25"); + assert_eq!(res, Err(ExpectedError("Integer".to_string(), "765.25".to_string()))); +} + +#[test] +fn test_read_str() { + assert_eq!(from_str("\""), Err(SyntaxError(EOFWhileParsingString, 1, 2))); + assert_eq!(from_str("\"lol"), Err(SyntaxError(EOFWhileParsingString, 1, 5))); + + assert_eq!(from_str("\"\""), Ok(String("".to_string()))); + assert_eq!(from_str("\"foo\""), Ok(String("foo".to_string()))); + assert_eq!(from_str("\"\\\"\""), Ok(String("\"".to_string()))); + assert_eq!(from_str("\"\\b\""), Ok(String("\x08".to_string()))); + assert_eq!(from_str("\"\\n\""), Ok(String("\n".to_string()))); + assert_eq!(from_str("\"\\r\""), Ok(String("\r".to_string()))); + assert_eq!(from_str("\"\\t\""), Ok(String("\t".to_string()))); + assert_eq!(from_str(" \"foo\" "), Ok(String("foo".to_string()))); + assert_eq!(from_str("\"\\u12ab\""), Ok(String("\u{12ab}".to_string()))); + assert_eq!(from_str("\"\\uAB12\""), Ok(String("\u{AB12}".to_string()))); +} + +#[test] +fn test_decode_str() { + let s = [ + ("\"\"", ""), + ("\"foo\"", "foo"), + ("\"\\\"\"", "\""), + ("\"\\b\"", "\x08"), + ("\"\\n\"", "\n"), + ("\"\\r\"", "\r"), + ("\"\\t\"", "\t"), + ("\"\\u12ab\"", "\u{12ab}"), + ("\"\\uAB12\"", "\u{AB12}"), + ]; + + for &(i, o) in &s { + let v: string::String = json::decode(i).unwrap(); + assert_eq!(v, o); + } +} + +#[test] +fn test_read_array() { + assert_eq!(from_str("["), Err(SyntaxError(EOFWhileParsingValue, 1, 2))); + assert_eq!(from_str("[1"), Err(SyntaxError(EOFWhileParsingArray, 1, 3))); + assert_eq!(from_str("[1,"), Err(SyntaxError(EOFWhileParsingValue, 1, 4))); + assert_eq!(from_str("[1,]"), Err(SyntaxError(InvalidSyntax, 1, 4))); + assert_eq!(from_str("[6 7]"), Err(SyntaxError(InvalidSyntax, 1, 4))); + + assert_eq!(from_str("[]"), Ok(Array(vec![]))); + assert_eq!(from_str("[ ]"), Ok(Array(vec![]))); + assert_eq!(from_str("[true]"), Ok(Array(vec![Boolean(true)]))); + assert_eq!(from_str("[ false ]"), Ok(Array(vec![Boolean(false)]))); + assert_eq!(from_str("[null]"), Ok(Array(vec![Null]))); + assert_eq!(from_str("[3, 1]"), Ok(Array(vec![U64(3), U64(1)]))); + assert_eq!(from_str("\n[3, 2]\n"), Ok(Array(vec![U64(3), U64(2)]))); + assert_eq!(from_str("[2, [4, 1]]"), Ok(Array(vec![U64(2), Array(vec![U64(4), U64(1)])]))); +} + +#[test] +fn test_decode_array() { + let v: Vec<()> = json::decode("[]").unwrap(); + assert_eq!(v, []); + + let v: Vec<()> = json::decode("[null]").unwrap(); + assert_eq!(v, [()]); + + let v: Vec<bool> = json::decode("[true]").unwrap(); + assert_eq!(v, [true]); + + let v: Vec<isize> = json::decode("[3, 1]").unwrap(); + assert_eq!(v, [3, 1]); + + let v: Vec<Vec<usize>> = json::decode("[[3], [1, 2]]").unwrap(); + assert_eq!(v, [vec![3], vec![1, 2]]); +} + +#[test] +fn test_decode_tuple() { + let t: (usize, usize, usize) = json::decode("[1, 2, 3]").unwrap(); + assert_eq!(t, (1, 2, 3)); + + let t: (usize, string::String) = json::decode("[1, \"two\"]").unwrap(); + assert_eq!(t, (1, "two".to_string())); +} + +#[test] +fn test_decode_tuple_malformed_types() { + assert!(json::decode::<(usize, string::String)>("[1, 2]").is_err()); +} + +#[test] +fn test_decode_tuple_malformed_length() { + assert!(json::decode::<(usize, usize)>("[1, 2, 3]").is_err()); +} + +#[test] +fn test_read_object() { + assert_eq!(from_str("{"), Err(SyntaxError(EOFWhileParsingObject, 1, 2))); + assert_eq!(from_str("{ "), Err(SyntaxError(EOFWhileParsingObject, 1, 3))); + assert_eq!(from_str("{1"), Err(SyntaxError(KeyMustBeAString, 1, 2))); + assert_eq!(from_str("{ \"a\""), Err(SyntaxError(EOFWhileParsingObject, 1, 6))); + assert_eq!(from_str("{\"a\""), Err(SyntaxError(EOFWhileParsingObject, 1, 5))); + assert_eq!(from_str("{\"a\" "), Err(SyntaxError(EOFWhileParsingObject, 1, 6))); + + assert_eq!(from_str("{\"a\" 1"), Err(SyntaxError(ExpectedColon, 1, 6))); + assert_eq!(from_str("{\"a\":"), Err(SyntaxError(EOFWhileParsingValue, 1, 6))); + assert_eq!(from_str("{\"a\":1"), Err(SyntaxError(EOFWhileParsingObject, 1, 7))); + assert_eq!(from_str("{\"a\":1 1"), Err(SyntaxError(InvalidSyntax, 1, 8))); + assert_eq!(from_str("{\"a\":1,"), Err(SyntaxError(EOFWhileParsingObject, 1, 8))); + + assert_eq!(from_str("{}").unwrap(), mk_object(&[])); + assert_eq!(from_str("{\"a\": 3}").unwrap(), mk_object(&[("a".to_string(), U64(3))])); + + assert_eq!( + from_str("{ \"a\": null, \"b\" : true }").unwrap(), + mk_object(&[("a".to_string(), Null), ("b".to_string(), Boolean(true))]) + ); + assert_eq!( + from_str("\n{ \"a\": null, \"b\" : true }\n").unwrap(), + mk_object(&[("a".to_string(), Null), ("b".to_string(), Boolean(true))]) + ); + assert_eq!( + from_str("{\"a\" : 1.0 ,\"b\": [ true ]}").unwrap(), + mk_object(&[("a".to_string(), F64(1.0)), ("b".to_string(), Array(vec![Boolean(true)]))]) + ); + assert_eq!( + from_str( + "{\ + \"a\": 1.0, \ + \"b\": [\ + true,\ + \"foo\\nbar\", \ + { \"c\": {\"d\": null} } \ + ]\ + }" + ) + .unwrap(), + mk_object(&[ + ("a".to_string(), F64(1.0)), + ( + "b".to_string(), + Array(vec![ + Boolean(true), + String("foo\nbar".to_string()), + mk_object(&[("c".to_string(), mk_object(&[("d".to_string(), Null)]))]) + ]) + ) + ]) + ); +} + +#[test] +fn test_decode_struct() { + let s = "{ + \"inner\": [ + { \"a\": null, \"b\": 2, \"c\": [\"abc\", \"xyz\"] } + ] + }"; + + let v: Outer = json::decode(s).unwrap(); + assert_eq!( + v, + Outer { inner: vec![Inner { a: (), b: 2, c: vec!["abc".to_string(), "xyz".to_string()] }] } + ); +} + +#[derive(Decodable)] +struct FloatStruct { + f: f64, + a: Vec<f64>, +} +#[test] +fn test_decode_struct_with_nan() { + let s = "{\"f\":null,\"a\":[null,123]}"; + let obj: FloatStruct = json::decode(s).unwrap(); + assert!(obj.f.is_nan()); + assert!(obj.a[0].is_nan()); + assert_eq!(obj.a[1], 123f64); +} + +#[test] +fn test_decode_option() { + let value: Option<string::String> = json::decode("null").unwrap(); + assert_eq!(value, None); + + let value: Option<string::String> = json::decode("\"jodhpurs\"").unwrap(); + assert_eq!(value, Some("jodhpurs".to_string())); +} + +#[test] +fn test_decode_enum() { + let value: Animal = json::decode("\"Dog\"").unwrap(); + assert_eq!(value, Dog); + + let s = "{\"variant\":\"Frog\",\"fields\":[\"Henry\",349]}"; + let value: Animal = json::decode(s).unwrap(); + assert_eq!(value, Frog("Henry".to_string(), 349)); +} + +#[test] +fn test_decode_map() { + let s = "{\"a\": \"Dog\", \"b\": {\"variant\":\"Frog\",\ + \"fields\":[\"Henry\", 349]}}"; + let mut map: BTreeMap<string::String, Animal> = json::decode(s).unwrap(); + + assert_eq!(map.remove(&"a".to_string()), Some(Dog)); + assert_eq!(map.remove(&"b".to_string()), Some(Frog("Henry".to_string(), 349))); +} + +#[test] +fn test_multiline_errors() { + assert_eq!(from_str("{\n \"foo\":\n \"bar\""), Err(SyntaxError(EOFWhileParsingObject, 3, 8))); +} + +#[derive(Decodable)] +#[allow(dead_code)] +struct DecodeStruct { + x: f64, + y: bool, + z: string::String, + w: Vec<DecodeStruct>, +} +#[derive(Decodable)] +enum DecodeEnum { + A(f64), + B(string::String), +} +fn check_err<T: Decodable<Decoder>>(to_parse: &'static str, expected: DecoderError) { + let res: DecodeResult<T> = match from_str(to_parse) { + Err(e) => Err(ParseError(e)), + Ok(json) => Decodable::decode(&mut Decoder::new(json)), + }; + match res { + Ok(_) => panic!("`{:?}` parsed & decoded ok, expecting error `{:?}`", to_parse, expected), + Err(ParseError(e)) => panic!("`{:?}` is not valid json: {:?}", to_parse, e), + Err(e) => { + assert_eq!(e, expected); + } + } +} +#[test] +fn test_decode_errors_struct() { + check_err::<DecodeStruct>("[]", ExpectedError("Object".to_string(), "[]".to_string())); + check_err::<DecodeStruct>( + "{\"x\": true, \"y\": true, \"z\": \"\", \"w\": []}", + ExpectedError("Number".to_string(), "true".to_string()), + ); + check_err::<DecodeStruct>( + "{\"x\": 1, \"y\": [], \"z\": \"\", \"w\": []}", + ExpectedError("Boolean".to_string(), "[]".to_string()), + ); + check_err::<DecodeStruct>( + "{\"x\": 1, \"y\": true, \"z\": {}, \"w\": []}", + ExpectedError("String".to_string(), "{}".to_string()), + ); + check_err::<DecodeStruct>( + "{\"x\": 1, \"y\": true, \"z\": \"\", \"w\": null}", + ExpectedError("Array".to_string(), "null".to_string()), + ); + check_err::<DecodeStruct>( + "{\"x\": 1, \"y\": true, \"z\": \"\"}", + MissingFieldError("w".to_string()), + ); +} +#[test] +fn test_decode_errors_enum() { + check_err::<DecodeEnum>("{}", MissingFieldError("variant".to_string())); + check_err::<DecodeEnum>( + "{\"variant\": 1}", + ExpectedError("String".to_string(), "1".to_string()), + ); + check_err::<DecodeEnum>("{\"variant\": \"A\"}", MissingFieldError("fields".to_string())); + check_err::<DecodeEnum>( + "{\"variant\": \"A\", \"fields\": null}", + ExpectedError("Array".to_string(), "null".to_string()), + ); + check_err::<DecodeEnum>( + "{\"variant\": \"C\", \"fields\": []}", + UnknownVariantError("C".to_string()), + ); +} + +#[test] +fn test_find() { + let json_value = from_str("{\"dog\" : \"cat\"}").unwrap(); + let found_str = json_value.find("dog"); + assert!(found_str.unwrap().as_string().unwrap() == "cat"); +} + +#[test] +fn test_find_path() { + let json_value = from_str("{\"dog\":{\"cat\": {\"mouse\" : \"cheese\"}}}").unwrap(); + let found_str = json_value.find_path(&["dog", "cat", "mouse"]); + assert!(found_str.unwrap().as_string().unwrap() == "cheese"); +} + +#[test] +fn test_search() { + let json_value = from_str("{\"dog\":{\"cat\": {\"mouse\" : \"cheese\"}}}").unwrap(); + let found_str = json_value.search("mouse").and_then(|j| j.as_string()); + assert!(found_str.unwrap() == "cheese"); +} + +#[test] +fn test_index() { + let json_value = from_str("{\"animals\":[\"dog\",\"cat\",\"mouse\"]}").unwrap(); + let ref array = json_value["animals"]; + assert_eq!(array[0].as_string().unwrap(), "dog"); + assert_eq!(array[1].as_string().unwrap(), "cat"); + assert_eq!(array[2].as_string().unwrap(), "mouse"); +} + +#[test] +fn test_is_object() { + let json_value = from_str("{}").unwrap(); + assert!(json_value.is_object()); +} + +#[test] +fn test_as_object() { + let json_value = from_str("{}").unwrap(); + let json_object = json_value.as_object(); + assert!(json_object.is_some()); +} + +#[test] +fn test_is_array() { + let json_value = from_str("[1, 2, 3]").unwrap(); + assert!(json_value.is_array()); +} + +#[test] +fn test_as_array() { + let json_value = from_str("[1, 2, 3]").unwrap(); + let json_array = json_value.as_array(); + let expected_length = 3; + assert!(json_array.is_some() && json_array.unwrap().len() == expected_length); +} + +#[test] +fn test_is_string() { + let json_value = from_str("\"dog\"").unwrap(); + assert!(json_value.is_string()); +} + +#[test] +fn test_as_string() { + let json_value = from_str("\"dog\"").unwrap(); + let json_str = json_value.as_string(); + let expected_str = "dog"; + assert_eq!(json_str, Some(expected_str)); +} + +#[test] +fn test_is_number() { + let json_value = from_str("12").unwrap(); + assert!(json_value.is_number()); +} + +#[test] +fn test_is_i64() { + let json_value = from_str("-12").unwrap(); + assert!(json_value.is_i64()); + + let json_value = from_str("12").unwrap(); + assert!(!json_value.is_i64()); + + let json_value = from_str("12.0").unwrap(); + assert!(!json_value.is_i64()); +} + +#[test] +fn test_is_u64() { + let json_value = from_str("12").unwrap(); + assert!(json_value.is_u64()); + + let json_value = from_str("-12").unwrap(); + assert!(!json_value.is_u64()); + + let json_value = from_str("12.0").unwrap(); + assert!(!json_value.is_u64()); +} + +#[test] +fn test_is_f64() { + let json_value = from_str("12").unwrap(); + assert!(!json_value.is_f64()); + + let json_value = from_str("-12").unwrap(); + assert!(!json_value.is_f64()); + + let json_value = from_str("12.0").unwrap(); + assert!(json_value.is_f64()); + + let json_value = from_str("-12.0").unwrap(); + assert!(json_value.is_f64()); +} + +#[test] +fn test_as_i64() { + let json_value = from_str("-12").unwrap(); + let json_num = json_value.as_i64(); + assert_eq!(json_num, Some(-12)); +} + +#[test] +fn test_as_u64() { + let json_value = from_str("12").unwrap(); + let json_num = json_value.as_u64(); + assert_eq!(json_num, Some(12)); +} + +#[test] +fn test_as_f64() { + let json_value = from_str("12.0").unwrap(); + let json_num = json_value.as_f64(); + assert_eq!(json_num, Some(12f64)); +} + +#[test] +fn test_is_boolean() { + let json_value = from_str("false").unwrap(); + assert!(json_value.is_boolean()); +} + +#[test] +fn test_as_boolean() { + let json_value = from_str("false").unwrap(); + let json_bool = json_value.as_boolean(); + let expected_bool = false; + assert!(json_bool.is_some() && json_bool.unwrap() == expected_bool); +} + +#[test] +fn test_is_null() { + let json_value = from_str("null").unwrap(); + assert!(json_value.is_null()); +} + +#[test] +fn test_as_null() { + let json_value = from_str("null").unwrap(); + let json_null = json_value.as_null(); + let expected_null = (); + assert!(json_null.is_some() && json_null.unwrap() == expected_null); +} + +#[test] +fn test_encode_hashmap_with_numeric_key() { + use std::collections::HashMap; + use std::str::from_utf8; + let mut hm: HashMap<usize, bool> = HashMap::new(); + hm.insert(1, true); + let mut mem_buf = Vec::new(); + write!(&mut mem_buf, "{}", json::as_pretty_json(&hm)).unwrap(); + let json_str = from_utf8(&mem_buf[..]).unwrap(); + match from_str(json_str) { + Err(_) => panic!("Unable to parse json_str: {:?}", json_str), + _ => {} // it parsed and we are good to go + } +} + +#[test] +fn test_prettyencode_hashmap_with_numeric_key() { + use std::collections::HashMap; + use std::str::from_utf8; + let mut hm: HashMap<usize, bool> = HashMap::new(); + hm.insert(1, true); + let mut mem_buf = Vec::new(); + write!(&mut mem_buf, "{}", json::as_pretty_json(&hm)).unwrap(); + let json_str = from_utf8(&mem_buf[..]).unwrap(); + match from_str(json_str) { + Err(_) => panic!("Unable to parse json_str: {:?}", json_str), + _ => {} // it parsed and we are good to go + } +} + +#[test] +fn test_prettyencoder_indent_level_param() { + use std::collections::BTreeMap; + use std::str::from_utf8; + + let mut tree = BTreeMap::new(); + + tree.insert("hello".to_string(), String("guten tag".to_string())); + tree.insert("goodbye".to_string(), String("sayonara".to_string())); + + let json = Array( + // The following layout below should look a lot like + // the pretty-printed JSON (indent * x) + vec![ + // 0x + String("greetings".to_string()), // 1x + Object(tree), // 1x + 2x + 2x + 1x + ], // 0x + // End JSON array (7 lines) + ); + + // Helper function for counting indents + fn indents(source: &str) -> usize { + let trimmed = source.trim_start_matches(' '); + source.len() - trimmed.len() + } + + // Test up to 4 spaces of indents (more?) + for i in 0..4 { + let mut writer = Vec::new(); + write!(&mut writer, "{}", json::as_pretty_json(&json).indent(i)).unwrap(); + + let printed = from_utf8(&writer[..]).unwrap(); + + // Check for indents at each line + let lines: Vec<&str> = printed.lines().collect(); + assert_eq!(lines.len(), 7); // JSON should be 7 lines + + assert_eq!(indents(lines[0]), 0 * i); // [ + assert_eq!(indents(lines[1]), 1 * i); // "greetings", + assert_eq!(indents(lines[2]), 1 * i); // { + assert_eq!(indents(lines[3]), 2 * i); // "hello": "guten tag", + assert_eq!(indents(lines[4]), 2 * i); // "goodbye": "sayonara" + assert_eq!(indents(lines[5]), 1 * i); // }, + assert_eq!(indents(lines[6]), 0 * i); // ] + + // Finally, test that the pretty-printed JSON is valid + from_str(printed).ok().expect("Pretty-printed JSON is invalid!"); + } +} + +#[test] +fn test_hashmap_with_enum_key() { + use std::collections::HashMap; + #[derive(Encodable, Eq, Hash, PartialEq, Decodable, Debug)] + enum Enum { + Foo, + #[allow(dead_code)] + Bar, + } + let mut map = HashMap::new(); + map.insert(Enum::Foo, 0); + let result = json::encode(&map).unwrap(); + assert_eq!(&result[..], r#"{"Foo":0}"#); + let decoded: HashMap<Enum, _> = json::decode(&result).unwrap(); + assert_eq!(map, decoded); +} + +#[test] +fn test_hashmap_with_numeric_key_can_handle_double_quote_delimited_key() { + use std::collections::HashMap; + let json_str = "{\"1\":true}"; + let json_obj = match from_str(json_str) { + Err(_) => panic!("Unable to parse json_str: {:?}", json_str), + Ok(o) => o, + }; + let mut decoder = Decoder::new(json_obj); + let _hm: HashMap<usize, bool> = Decodable::decode(&mut decoder).unwrap(); +} + +#[test] +fn test_hashmap_with_numeric_key_will_error_with_string_keys() { + use std::collections::HashMap; + let json_str = "{\"a\":true}"; + let json_obj = match from_str(json_str) { + Err(_) => panic!("Unable to parse json_str: {:?}", json_str), + Ok(o) => o, + }; + let mut decoder = Decoder::new(json_obj); + let result: Result<HashMap<usize, bool>, DecoderError> = Decodable::decode(&mut decoder); + assert_eq!(result, Err(ExpectedError("Number".to_string(), "a".to_string()))); +} + +fn assert_stream_equal(src: &str, expected: Vec<(JsonEvent, Vec<StackElement<'_>>)>) { + let mut parser = Parser::new(src.chars()); + let mut i = 0; + loop { + let evt = match parser.next() { + Some(e) => e, + None => { + break; + } + }; + let (ref expected_evt, ref expected_stack) = expected[i]; + if !parser.stack().is_equal_to(expected_stack) { + panic!("Parser stack is not equal to {:?}", expected_stack); + } + assert_eq!(&evt, expected_evt); + i += 1; + } +} +#[test] +fn test_streaming_parser() { + assert_stream_equal( + r#"{ "foo":"bar", "array" : [0, 1, 2, 3, 4, 5], "idents":[null,true,false]}"#, + vec![ + (ObjectStart, vec![]), + (StringValue("bar".to_string()), vec![StackElement::Key("foo")]), + (ArrayStart, vec![StackElement::Key("array")]), + (U64Value(0), vec![StackElement::Key("array"), StackElement::Index(0)]), + (U64Value(1), vec![StackElement::Key("array"), StackElement::Index(1)]), + (U64Value(2), vec![StackElement::Key("array"), StackElement::Index(2)]), + (U64Value(3), vec![StackElement::Key("array"), StackElement::Index(3)]), + (U64Value(4), vec![StackElement::Key("array"), StackElement::Index(4)]), + (U64Value(5), vec![StackElement::Key("array"), StackElement::Index(5)]), + (ArrayEnd, vec![StackElement::Key("array")]), + (ArrayStart, vec![StackElement::Key("idents")]), + (NullValue, vec![StackElement::Key("idents"), StackElement::Index(0)]), + (BooleanValue(true), vec![StackElement::Key("idents"), StackElement::Index(1)]), + (BooleanValue(false), vec![StackElement::Key("idents"), StackElement::Index(2)]), + (ArrayEnd, vec![StackElement::Key("idents")]), + (ObjectEnd, vec![]), + ], + ); +} +fn last_event(src: &str) -> JsonEvent { + let mut parser = Parser::new(src.chars()); + let mut evt = NullValue; + loop { + evt = match parser.next() { + Some(e) => e, + None => return evt, + } + } +} + +#[test] +fn test_read_object_streaming() { + assert_eq!(last_event("{ "), Error(SyntaxError(EOFWhileParsingObject, 1, 3))); + assert_eq!(last_event("{1"), Error(SyntaxError(KeyMustBeAString, 1, 2))); + assert_eq!(last_event("{ \"a\""), Error(SyntaxError(EOFWhileParsingObject, 1, 6))); + assert_eq!(last_event("{\"a\""), Error(SyntaxError(EOFWhileParsingObject, 1, 5))); + assert_eq!(last_event("{\"a\" "), Error(SyntaxError(EOFWhileParsingObject, 1, 6))); + + assert_eq!(last_event("{\"a\" 1"), Error(SyntaxError(ExpectedColon, 1, 6))); + assert_eq!(last_event("{\"a\":"), Error(SyntaxError(EOFWhileParsingValue, 1, 6))); + assert_eq!(last_event("{\"a\":1"), Error(SyntaxError(EOFWhileParsingObject, 1, 7))); + assert_eq!(last_event("{\"a\":1 1"), Error(SyntaxError(InvalidSyntax, 1, 8))); + assert_eq!(last_event("{\"a\":1,"), Error(SyntaxError(EOFWhileParsingObject, 1, 8))); + assert_eq!(last_event("{\"a\":1,}"), Error(SyntaxError(TrailingComma, 1, 8))); + + assert_stream_equal("{}", vec![(ObjectStart, vec![]), (ObjectEnd, vec![])]); + assert_stream_equal( + "{\"a\": 3}", + vec![ + (ObjectStart, vec![]), + (U64Value(3), vec![StackElement::Key("a")]), + (ObjectEnd, vec![]), + ], + ); + assert_stream_equal( + "{ \"a\": null, \"b\" : true }", + vec![ + (ObjectStart, vec![]), + (NullValue, vec![StackElement::Key("a")]), + (BooleanValue(true), vec![StackElement::Key("b")]), + (ObjectEnd, vec![]), + ], + ); + assert_stream_equal( + "{\"a\" : 1.0 ,\"b\": [ true ]}", + vec![ + (ObjectStart, vec![]), + (F64Value(1.0), vec![StackElement::Key("a")]), + (ArrayStart, vec![StackElement::Key("b")]), + (BooleanValue(true), vec![StackElement::Key("b"), StackElement::Index(0)]), + (ArrayEnd, vec![StackElement::Key("b")]), + (ObjectEnd, vec![]), + ], + ); + assert_stream_equal( + r#"{ + "a": 1.0, + "b": [ + true, + "foo\nbar", + { "c": {"d": null} } + ] + }"#, + vec![ + (ObjectStart, vec![]), + (F64Value(1.0), vec![StackElement::Key("a")]), + (ArrayStart, vec![StackElement::Key("b")]), + (BooleanValue(true), vec![StackElement::Key("b"), StackElement::Index(0)]), + ( + StringValue("foo\nbar".to_string()), + vec![StackElement::Key("b"), StackElement::Index(1)], + ), + (ObjectStart, vec![StackElement::Key("b"), StackElement::Index(2)]), + ( + ObjectStart, + vec![StackElement::Key("b"), StackElement::Index(2), StackElement::Key("c")], + ), + ( + NullValue, + vec![ + StackElement::Key("b"), + StackElement::Index(2), + StackElement::Key("c"), + StackElement::Key("d"), + ], + ), + ( + ObjectEnd, + vec![StackElement::Key("b"), StackElement::Index(2), StackElement::Key("c")], + ), + (ObjectEnd, vec![StackElement::Key("b"), StackElement::Index(2)]), + (ArrayEnd, vec![StackElement::Key("b")]), + (ObjectEnd, vec![]), + ], + ); +} +#[test] +fn test_read_array_streaming() { + assert_stream_equal("[]", vec![(ArrayStart, vec![]), (ArrayEnd, vec![])]); + assert_stream_equal("[ ]", vec![(ArrayStart, vec![]), (ArrayEnd, vec![])]); + assert_stream_equal( + "[true]", + vec![ + (ArrayStart, vec![]), + (BooleanValue(true), vec![StackElement::Index(0)]), + (ArrayEnd, vec![]), + ], + ); + assert_stream_equal( + "[ false ]", + vec![ + (ArrayStart, vec![]), + (BooleanValue(false), vec![StackElement::Index(0)]), + (ArrayEnd, vec![]), + ], + ); + assert_stream_equal( + "[null]", + vec![(ArrayStart, vec![]), (NullValue, vec![StackElement::Index(0)]), (ArrayEnd, vec![])], + ); + assert_stream_equal( + "[3, 1]", + vec![ + (ArrayStart, vec![]), + (U64Value(3), vec![StackElement::Index(0)]), + (U64Value(1), vec![StackElement::Index(1)]), + (ArrayEnd, vec![]), + ], + ); + assert_stream_equal( + "\n[3, 2]\n", + vec![ + (ArrayStart, vec![]), + (U64Value(3), vec![StackElement::Index(0)]), + (U64Value(2), vec![StackElement::Index(1)]), + (ArrayEnd, vec![]), + ], + ); + assert_stream_equal( + "[2, [4, 1]]", + vec![ + (ArrayStart, vec![]), + (U64Value(2), vec![StackElement::Index(0)]), + (ArrayStart, vec![StackElement::Index(1)]), + (U64Value(4), vec![StackElement::Index(1), StackElement::Index(0)]), + (U64Value(1), vec![StackElement::Index(1), StackElement::Index(1)]), + (ArrayEnd, vec![StackElement::Index(1)]), + (ArrayEnd, vec![]), + ], + ); + + assert_eq!(last_event("["), Error(SyntaxError(EOFWhileParsingValue, 1, 2))); + + assert_eq!(from_str("["), Err(SyntaxError(EOFWhileParsingValue, 1, 2))); + assert_eq!(from_str("[1"), Err(SyntaxError(EOFWhileParsingArray, 1, 3))); + assert_eq!(from_str("[1,"), Err(SyntaxError(EOFWhileParsingValue, 1, 4))); + assert_eq!(from_str("[1,]"), Err(SyntaxError(InvalidSyntax, 1, 4))); + assert_eq!(from_str("[6 7]"), Err(SyntaxError(InvalidSyntax, 1, 4))); +} +#[test] +fn test_trailing_characters_streaming() { + assert_eq!(last_event("nulla"), Error(SyntaxError(TrailingCharacters, 1, 5))); + assert_eq!(last_event("truea"), Error(SyntaxError(TrailingCharacters, 1, 5))); + assert_eq!(last_event("falsea"), Error(SyntaxError(TrailingCharacters, 1, 6))); + assert_eq!(last_event("1a"), Error(SyntaxError(TrailingCharacters, 1, 2))); + assert_eq!(last_event("[]a"), Error(SyntaxError(TrailingCharacters, 1, 3))); + assert_eq!(last_event("{}a"), Error(SyntaxError(TrailingCharacters, 1, 3))); +} +#[test] +fn test_read_identifiers_streaming() { + assert_eq!(Parser::new("null".chars()).next(), Some(NullValue)); + assert_eq!(Parser::new("true".chars()).next(), Some(BooleanValue(true))); + assert_eq!(Parser::new("false".chars()).next(), Some(BooleanValue(false))); + + assert_eq!(last_event("n"), Error(SyntaxError(InvalidSyntax, 1, 2))); + assert_eq!(last_event("nul"), Error(SyntaxError(InvalidSyntax, 1, 4))); + assert_eq!(last_event("t"), Error(SyntaxError(InvalidSyntax, 1, 2))); + assert_eq!(last_event("truz"), Error(SyntaxError(InvalidSyntax, 1, 4))); + assert_eq!(last_event("f"), Error(SyntaxError(InvalidSyntax, 1, 2))); + assert_eq!(last_event("faz"), Error(SyntaxError(InvalidSyntax, 1, 3))); +} + +#[test] +fn test_to_json() { + use json::ToJson; + use std::collections::{BTreeMap, HashMap}; + + let array2 = Array(vec![U64(1), U64(2)]); + let array3 = Array(vec![U64(1), U64(2), U64(3)]); + let object = { + let mut tree_map = BTreeMap::new(); + tree_map.insert("a".to_string(), U64(1)); + tree_map.insert("b".to_string(), U64(2)); + Object(tree_map) + }; + + assert_eq!(array2.to_json(), array2); + assert_eq!(object.to_json(), object); + assert_eq!(3_isize.to_json(), I64(3)); + assert_eq!(4_i8.to_json(), I64(4)); + assert_eq!(5_i16.to_json(), I64(5)); + assert_eq!(6_i32.to_json(), I64(6)); + assert_eq!(7_i64.to_json(), I64(7)); + assert_eq!(8_usize.to_json(), U64(8)); + assert_eq!(9_u8.to_json(), U64(9)); + assert_eq!(10_u16.to_json(), U64(10)); + assert_eq!(11_u32.to_json(), U64(11)); + assert_eq!(12_u64.to_json(), U64(12)); + assert_eq!(13.0_f32.to_json(), F64(13.0_f64)); + assert_eq!(14.0_f64.to_json(), F64(14.0_f64)); + assert_eq!(().to_json(), Null); + assert_eq!(f32::INFINITY.to_json(), Null); + assert_eq!(f64::NAN.to_json(), Null); + assert_eq!(true.to_json(), Boolean(true)); + assert_eq!(false.to_json(), Boolean(false)); + assert_eq!("abc".to_json(), String("abc".to_string())); + assert_eq!("abc".to_string().to_json(), String("abc".to_string())); + assert_eq!((1_usize, 2_usize).to_json(), array2); + assert_eq!((1_usize, 2_usize, 3_usize).to_json(), array3); + assert_eq!([1_usize, 2_usize].to_json(), array2); + assert_eq!((&[1_usize, 2_usize, 3_usize]).to_json(), array3); + assert_eq!((vec![1_usize, 2_usize]).to_json(), array2); + assert_eq!(vec![1_usize, 2_usize, 3_usize].to_json(), array3); + let mut tree_map = BTreeMap::new(); + tree_map.insert("a".to_string(), 1 as usize); + tree_map.insert("b".to_string(), 2); + assert_eq!(tree_map.to_json(), object); + let mut hash_map = HashMap::new(); + hash_map.insert("a".to_string(), 1 as usize); + hash_map.insert("b".to_string(), 2); + assert_eq!(hash_map.to_json(), object); + assert_eq!(Some(15).to_json(), I64(15)); + assert_eq!(Some(15 as usize).to_json(), U64(15)); + assert_eq!(None::<isize>.to_json(), Null); +} + +#[test] +fn test_encode_hashmap_with_arbitrary_key() { + use std::collections::HashMap; + #[derive(PartialEq, Eq, Hash, Encodable)] + struct ArbitraryType(usize); + let mut hm: HashMap<ArbitraryType, bool> = HashMap::new(); + hm.insert(ArbitraryType(1), true); + let mut mem_buf = string::String::new(); + let mut encoder = Encoder::new(&mut mem_buf); + let result = hm.encode(&mut encoder); + match result.unwrap_err() { + EncoderError::BadHashmapKey => (), + _ => panic!("expected bad hash map key"), + } +} |