toml-rs/test-suite/tests/parser.rs

extern crate toml;

use toml::Value;

macro_rules! bad {
    ($toml:expr, $msg:expr) => {
        match $toml.parse::<toml::Value>() {
            Ok(s) => panic!("parsed to: {:#?}", s),
            Err(e) => assert_eq!(e.to_string(), $msg),
        }
    };
}

#[test]
fn crlf() {
    "\
     [project]\r\n\
     \r\n\
     name = \"splay\"\r\n\
     version = \"0.1.0\"\r\n\
     authors = [\"alex@crichton.co\"]\r\n\
     \r\n\
     [[lib]]\r\n\
     \r\n\
     path = \"lib.rs\"\r\n\
     name = \"splay\"\r\n\
     description = \"\"\"\
     A Rust implementation of a TAR file reader and writer. This library does not\r\n\
     currently handle compression, but it is abstract over all I/O readers and\r\n\
     writers. Additionally, great lengths are taken to ensure that the entire\r\n\
     contents are never required to be entirely resident in memory all at once.\r\n\
     \"\"\"\
     "
    .parse::<Value>()
    .unwrap();
}

#[test]
fn fun_with_strings() {
    let table = r#"
bar = "\U00000000"
key1 = "One\nTwo"
key2 = """One\nTwo"""
key3 = """
One
Two"""

key4 = "The quick brown fox jumps over the lazy dog."
key5 = """
The quick brown \


fox jumps over \
the lazy dog."""
key6 = """\
   The quick brown \
   fox jumps over \
   the lazy dog.\
   """
# What you see is what you get.
winpath  = 'C:\Users\nodejs\templates'
winpath2 = '\\ServerX\admin$\system32\'
quoted   = 'Tom "Dubs" Preston-Werner'
regex    = '<\i\c*\s*>'

regex2 = '''I [dw]on't need \d{2} apples'''
lines  = '''
The first newline is
trimmed in raw strings.
All other whitespace
is preserved.
'''
"#
    .parse::<Value>()
    .unwrap();
    assert_eq!(table["bar"].as_str(), Some("\0"));
    assert_eq!(table["key1"].as_str(), Some("One\nTwo"));
    assert_eq!(table["key2"].as_str(), Some("One\nTwo"));
    assert_eq!(table["key3"].as_str(), Some("One\nTwo"));

    let msg = "The quick brown fox jumps over the lazy dog.";
    assert_eq!(table["key4"].as_str(), Some(msg));
    assert_eq!(table["key5"].as_str(), Some(msg));
    assert_eq!(table["key6"].as_str(), Some(msg));

    assert_eq!(
        table["winpath"].as_str(),
        Some(r"C:\Users\nodejs\templates")
    );
    assert_eq!(
        table["winpath2"].as_str(),
        Some(r"\\ServerX\admin$\system32\")
    );
    assert_eq!(
        table["quoted"].as_str(),
        Some(r#"Tom "Dubs" Preston-Werner"#)
    );
    assert_eq!(table["regex"].as_str(), Some(r"<\i\c*\s*>"));
    assert_eq!(
        table["regex2"].as_str(),
        Some(r"I [dw]on't need \d{2} apples")
    );
    assert_eq!(
        table["lines"].as_str(),
        Some(
            "The first newline is\n\
             trimmed in raw strings.\n\
             All other whitespace\n\
             is preserved.\n"
        )
    );
}

#[test]
fn tables_in_arrays() {
    let table = r#"
[[foo]]
#…
[foo.bar]
#…

[[foo]] # ...
#…
[foo.bar]
#...
"#
    .parse::<Value>()
    .unwrap();
    table["foo"][0]["bar"].as_table().unwrap();
    table["foo"][1]["bar"].as_table().unwrap();
}

#[test]
fn empty_table() {
    let table = r#"
[foo]"#
        .parse::<Value>()
        .unwrap();
    table["foo"].as_table().unwrap();
}

#[test]
fn fruit() {
    let table = r#"
[[fruit]]
name = "apple"

[fruit.physical]
color = "red"
shape = "round"

[[fruit.variety]]
name = "red delicious"

[[fruit.variety]]
name = "granny smith"

[[fruit]]
name = "banana"

[[fruit.variety]]
name = "plantain"
"#
    .parse::<Value>()
    .unwrap();
    assert_eq!(table["fruit"][0]["name"].as_str(), Some("apple"));
    assert_eq!(table["fruit"][0]["physical"]["color"].as_str(), Some("red"));
    assert_eq!(
        table["fruit"][0]["physical"]["shape"].as_str(),
        Some("round")
    );
    assert_eq!(
        table["fruit"][0]["variety"][0]["name"].as_str(),
        Some("red delicious")
    );
    assert_eq!(
        table["fruit"][0]["variety"][1]["name"].as_str(),
        Some("granny smith")
    );
    assert_eq!(table["fruit"][1]["name"].as_str(), Some("banana"));
    assert_eq!(
        table["fruit"][1]["variety"][0]["name"].as_str(),
        Some("plantain")
    );
}

#[test]
fn stray_cr() {
    bad!("\r", "unexpected character found: `\\r` at line 1 column 1");
    bad!(
        "a = [ \r ]",
        "unexpected character found: `\\r` at line 1 column 7"
    );
    bad!(
        "a = \"\"\"\r\"\"\"",
        "invalid character in string: `\\r` at line 1 column 8"
    );
    bad!(
        "a = \"\"\"\\  \r  \"\"\"",
        "invalid escape character in string: ` ` at line 1 column 9"
    );
    bad!(
        "a = '''\r'''",
        "invalid character in string: `\\r` at line 1 column 8"
    );
    bad!(
        "a = '\r'",
        "invalid character in string: `\\r` at line 1 column 6"
    );
    bad!(
        "a = \"\r\"",
        "invalid character in string: `\\r` at line 1 column 6"
    );
}

#[test]
fn blank_literal_string() {
    let table = "foo = ''".parse::<Value>().unwrap();
    assert_eq!(table["foo"].as_str(), Some(""));
}

#[test]
fn many_blank() {
    let table = "foo = \"\"\"\n\n\n\"\"\"".parse::<Value>().unwrap();
    assert_eq!(table["foo"].as_str(), Some("\n\n"));
}

#[test]
fn literal_eats_crlf() {
    let table = "
        foo = \"\"\"\\\r\n\"\"\"
        bar = \"\"\"\\\r\n   \r\n   \r\n   a\"\"\"
    "
    .parse::<Value>()
    .unwrap();
    assert_eq!(table["foo"].as_str(), Some(""));
    assert_eq!(table["bar"].as_str(), Some("a"));
}

#[test]
fn string_no_newline() {
    bad!("a = \"\n\"", "newline in string found at line 1 column 6");
    bad!("a = '\n'", "newline in string found at line 1 column 6");
}

#[test]
fn bad_leading_zeros() {
    bad!("a = 00", "invalid number at line 1 column 6");
    bad!("a = -00", "invalid number at line 1 column 7");
    bad!("a = +00", "invalid number at line 1 column 7");
    bad!("a = 00.0", "invalid number at line 1 column 6");
    bad!("a = -00.0", "invalid number at line 1 column 7");
    bad!("a = +00.0", "invalid number at line 1 column 7");
    bad!(
        "a = 9223372036854775808",
        "invalid number at line 1 column 5"
    );
    bad!(
        "a = -9223372036854775809",
        "invalid number at line 1 column 5"
    );
}

#[test]
fn bad_floats() {
    bad!("a = 0.", "invalid number at line 1 column 7");
    bad!("a = 0.e", "invalid number at line 1 column 7");
    bad!("a = 0.E", "invalid number at line 1 column 7");
    bad!("a = 0.0E", "invalid number at line 1 column 5");
    bad!("a = 0.0e", "invalid number at line 1 column 5");
    bad!("a = 0.0e-", "invalid number at line 1 column 9");
    bad!("a = 0.0e+", "invalid number at line 1 column 5");
    bad!("a = 0.0e+00", "invalid number at line 1 column 11");
}

#[test]
fn floats() {
    macro_rules! t {
        ($actual:expr, $expected:expr) => {{
            let f = format!("foo = {}", $actual);
            println!("{}", f);
            let a = f.parse::<Value>().unwrap();
            assert_eq!(a["foo"].as_float().unwrap(), $expected);
        }};
    }

    t!("1.0", 1.0);
    t!("1.0e0", 1.0);
    t!("1.0e+0", 1.0);
    t!("1.0e-0", 1.0);
    t!("1E-0", 1.0);
    t!("1.001e-0", 1.001);
    t!("2e10", 2e10);
    t!("2e+10", 2e10);
    t!("2e-10", 2e-10);
    t!("2_0.0", 20.0);
    t!("2_0.0_0e1_0", 20.0e10);
    t!("2_0.1_0e1_0", 20.1e10);
}

#[test]
fn bare_key_names() {
    let a = "
        foo = 3
        foo_3 = 3
        foo_-2--3--r23f--4-f2-4 = 3
        _ = 3
        - = 3
        8 = 8
        \"a\" = 3
        \"!\" = 3
        \"a^b\" = 3
        \"\\\"\" = 3
        \"character encoding\" = \"value\"
        'ʎǝʞ' = \"value\"
    "
    .parse::<Value>()
    .unwrap();
    &a["foo"];
    &a["-"];
    &a["_"];
    &a["8"];
    &a["foo_3"];
    &a["foo_-2--3--r23f--4-f2-4"];
    &a["a"];
    &a["!"];
    &a["\""];
    &a["character encoding"];
    &a["ʎǝʞ"];
}

#[test]
fn bad_keys() {
    bad!(
        "key\n=3",
        "expected an equals, found a newline at line 1 column 4"
    );
    bad!(
        "key=\n3",
        "expected a value, found a newline at line 1 column 5"
    );
    bad!(
        "key|=3",
        "unexpected character found: `|` at line 1 column 4"
    );
    bad!("\"\"=3", "empty table key found at line 1 column 1");
    bad!(
        "=3",
        "expected a table key, found an equals at line 1 column 1"
    );
    bad!("\"\"|=3", "empty table key found at line 1 column 1");
    bad!("\"\n\"|=3", "newline in string found at line 1 column 2");
    bad!(
        "\"\r\"|=3",
        "invalid character in string: `\\r` at line 1 column 2"
    );
    bad!(
        "''''''=3",
        "multiline strings are not allowed for key at line 1 column 1"
    );
    bad!(
        "\"\"\"\"\"\"=3",
        "multiline strings are not allowed for key at line 1 column 1"
    );
    bad!(
        "'''key'''=3",
        "multiline strings are not allowed for key at line 1 column 1"
    );
    bad!(
        "\"\"\"key\"\"\"=3",
        "multiline strings are not allowed for key at line 1 column 1"
    );
}

#[test]
fn bad_table_names() {
    bad!(
        "[]",
        "expected a table key, found a right bracket at line 1 column 2"
    );
    bad!(
        "[.]",
        "expected a table key, found a period at line 1 column 2"
    );
    bad!("[\"\".\"\"]", "empty table key found at line 1 column 2");
    bad!(
        "[a.]",
        "expected a table key, found a right bracket at line 1 column 4"
    );
    bad!("[\"\"]", "empty table key found at line 1 column 2");
    bad!("[!]", "unexpected character found: `!` at line 1 column 2");
    bad!("[\"\n\"]", "newline in string found at line 1 column 3");
    bad!(
        "[a.b]\n[a.\"b\"]",
        "redefinition of table `a.b` for key `a.b` at line 2 column 1"
    );
    bad!("[']", "unterminated string at line 1 column 2");
    bad!("[''']", "unterminated string at line 1 column 2");
    bad!(
        "['''''']",
        "multiline strings are not allowed for key at line 1 column 2"
    );
    bad!(
        "['''foo''']",
        "multiline strings are not allowed for key at line 1 column 2"
    );
    bad!(
        "[\"\"\"bar\"\"\"]",
        "multiline strings are not allowed for key at line 1 column 2"
    );
    bad!("['\n']", "newline in string found at line 1 column 3");
    bad!("['\r\n']", "newline in string found at line 1 column 3");
}

#[test]
fn table_names() {
    let a = "
        [a.\"b\"]
        [\"f f\"]
        [\"f.f\"]
        [\"\\\"\"]
        ['a.a']
        ['\"\"']
    "
    .parse::<Value>()
    .unwrap();
    println!("{:?}", a);
    &a["a"]["b"];
    &a["f f"];
    &a["f.f"];
    &a["\""];
    &a["\"\""];
}

#[test]
fn invalid_bare_numeral() {
    bad!("4", "expected an equals, found eof at line 1 column 2");
}

#[test]
fn inline_tables() {
    "a = {}".parse::<Value>().unwrap();
    "a = {b=1}".parse::<Value>().unwrap();
    "a = {   b   =   1    }".parse::<Value>().unwrap();
    "a = {a=1,b=2}".parse::<Value>().unwrap();
    "a = {a=1,b=2,c={}}".parse::<Value>().unwrap();

    bad!(
        "a = {a=1,}",
        "expected a table key, found a right brace at line 1 column 10"
    );
    bad!(
        "a = {,}",
        "expected a table key, found a comma at line 1 column 6"
    );
    bad!("a = {a=1,a=1}", "duplicate key: `a` for key `a`");
    bad!(
        "a = {\n}",
        "expected a table key, found a newline at line 1 column 6"
    );
    bad!(
        "a = {",
        "expected a table key, found eof at line 1 column 6"
    );

    "a = {a=[\n]}".parse::<Value>().unwrap();
    "a = {\"a\"=[\n]}".parse::<Value>().unwrap();
    "a = [\n{},\n{},\n]".parse::<Value>().unwrap();
}

#[test]
fn number_underscores() {
    macro_rules! t {
        ($actual:expr, $expected:expr) => {{
            let f = format!("foo = {}", $actual);
            let table = f.parse::<Value>().unwrap();
            assert_eq!(table["foo"].as_integer().unwrap(), $expected);
        }};
    }

    t!("1_0", 10);
    t!("1_0_0", 100);
    t!("1_000", 1000);
    t!("+1_000", 1000);
    t!("-1_000", -1000);
}

#[test]
fn bad_underscores() {
    bad!("foo = 0_", "invalid number at line 1 column 7");
    bad!("foo = 0__0", "invalid number at line 1 column 7");
    bad!("foo = __0", "invalid number at line 1 column 7");
    bad!("foo = 1_0_", "invalid number at line 1 column 7");
}

#[test]
fn bad_unicode_codepoint() {
    bad!(
        "foo = \"\\uD800\"",
        "invalid escape value: `55296` at line 1 column 9"
    );
}

#[test]
fn bad_strings() {
    bad!(
        "foo = \"\\uxx\"",
        "invalid hex escape character in string: `x` at line 1 column 10"
    );
    bad!(
        "foo = \"\\u\"",
        "invalid hex escape character in string: `\\\"` at line 1 column 10"
    );
    bad!("foo = \"\\", "unterminated string at line 1 column 7");
    bad!("foo = '", "unterminated string at line 1 column 7");
}

#[test]
fn empty_string() {
    assert_eq!(
        "foo = \"\"".parse::<Value>().unwrap()["foo"]
            .as_str()
            .unwrap(),
        ""
    );
}

#[test]
fn booleans() {
    let table = "foo = true".parse::<Value>().unwrap();
    assert_eq!(table["foo"].as_bool(), Some(true));

    let table = "foo = false".parse::<Value>().unwrap();
    assert_eq!(table["foo"].as_bool(), Some(false));

    bad!("foo = true2", "failed to parse datetime for key `foo`");
    bad!("foo = false2", "invalid number at line 1 column 7");
    bad!("foo = t1", "failed to parse datetime for key `foo`");
    bad!("foo = f2", "invalid number at line 1 column 7");
}

#[test]
fn bad_nesting() {
    bad!(
        "
        a = [2]
        [[a]]
        b = 5
        ",
        "duplicate key: `a`"
    );
    bad!(
        "
        a = 1
        [a.b]
        ",
        "duplicate key: `a`"
    );
    bad!(
        "
        a = []
        [a.b]
        ",
        "duplicate key: `a`"
    );
    bad!(
        "
        a = []
        [[a.b]]
        ",
        "duplicate key: `a`"
    );
    bad!(
        "
        [a]
        b = { c = 2, d = {} }
        [a.b]
        c = 2
        ",
        "duplicate key: `b` for key `a`"
    );
}

#[test]
fn bad_table_redefine() {
    bad!(
        "
        [a]
        foo=\"bar\"
        [a.b]
        foo=\"bar\"
        [a]
        ",
        "redefinition of table `a` for key `a` at line 6 column 9"
    );
    bad!(
        "
        [a]
        foo=\"bar\"
        b = { foo = \"bar\" }
        [a]
        ",
        "redefinition of table `a` for key `a` at line 5 column 9"
    );
    bad!(
        "
        [a]
        b = {}
        [a.b]
        ",
        "duplicate key: `b` for key `a`"
    );

    bad!(
        "
        [a]
        b = {}
        [a]
        ",
        "redefinition of table `a` for key `a` at line 4 column 9"
    );
}

#[test]
fn datetimes() {
    macro_rules! t {
        ($actual:expr) => {{
            let f = format!("foo = {}", $actual);
            let toml = f.parse::<Value>().expect(&format!("failed: {}", f));
            assert_eq!(toml["foo"].as_datetime().unwrap().to_string(), $actual);
        }};
    }

    t!("2016-09-09T09:09:09Z");
    t!("2016-09-09T09:09:09.1Z");
    t!("2016-09-09T09:09:09.2+10:00");
    t!("2016-09-09T09:09:09.123456789-02:00");
    bad!(
        "foo = 2016-09-09T09:09:09.Z",
        "failed to parse datetime for key `foo`"
    );
    bad!(
        "foo = 2016-9-09T09:09:09Z",
        "failed to parse datetime for key `foo`"
    );
    bad!(
        "foo = 2016-09-09T09:09:09+2:00",
        "failed to parse datetime for key `foo`"
    );
    bad!(
        "foo = 2016-09-09T09:09:09-2:00",
        "failed to parse datetime for key `foo`"
    );
    bad!(
        "foo = 2016-09-09T09:09:09Z-2:00",
        "failed to parse datetime for key `foo`"
    );
}

#[test]
fn require_newline_after_value() {
    bad!("0=0r=false", "invalid number at line 1 column 3");
    bad!(
        r#"
0=""o=""m=""r=""00="0"q="""0"""e="""0"""
"#,
        "expected newline, found an identifier at line 2 column 5"
    );
    bad!(
        r#"
[[0000l0]]
0="0"[[0000l0]]
0="0"[[0000l0]]
0="0"l="0"
"#,
        "expected newline, found a left bracket at line 3 column 6"
    );
    bad!(
        r#"
0=[0]00=[0,0,0]t=["0","0","0"]s=[1000-00-00T00:00:00Z,2000-00-00T00:00:00Z]
"#,
        "expected newline, found an identifier at line 2 column 6"
    );
    bad!(
        r#"
0=0r0=0r=false
"#,
        "invalid number at line 2 column 3"
    );
    bad!(
        r#"
0=0r0=0r=falsefal=false
"#,
        "invalid number at line 2 column 3"
    );
}