Rename directories for some compiler crates from `libx` to `librustc_x`

libarena -> librustc_arena
libfmt_macros -> librustc_parse_format
libgraphviz -> librustc_graphviz
libserialize -> librustc_serialize

1 files changed, 0 insertions, 1270 deletions

diff --git a/src/libserialize/tests/json.rs b/src/libserialize/tests/json.rs
deleted file mode 100644
index 688bddc2baf..00000000000
--- a/src/libserialize/tests/json.rs
+++ /dev/null
@@ -1,1270 +0,0 @@
-#![allow(rustc::internal)]
-
-extern crate serialize as rustc_serialize;
-
-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_serialize::json;
-use rustc_serialize::{Decodable, Encodable};
-
-use std::collections::BTreeMap;
-use std::io::prelude::*;
-use std::string;
-use Animal::*;
-
-#[derive(RustcDecodable, 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, RustcEncodable, RustcDecodable, Debug)]
-enum Animal {
-    Dog,
-    Frog(string::String, isize),
-}
-
-#[derive(PartialEq, RustcEncodable, RustcDecodable, Debug)]
-struct Inner {
-    a: (),
-    b: usize,
-    c: Vec<string::String>,
-}
-
-#[derive(PartialEq, RustcEncodable, RustcDecodable, 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(RustcDecodable)]
-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(RustcDecodable)]
-#[allow(dead_code)]
-struct DecodeStruct {
-    x: f64,
-    y: bool,
-    z: string::String,
-    w: Vec<DecodeStruct>,
-}
-#[derive(RustcDecodable)]
-enum DecodeEnum {
-    A(f64),
-    B(string::String),
-}
-fn check_err<T: Decodable>(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(RustcEncodable, Eq, Hash, PartialEq, RustcDecodable, 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, RustcEncodable)]
-    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"),
-    }
-}