use turkos_os_shell_words::{Error, Words};

#[test]
fn os_shell_words_quotes_escapes_empty_and_utf8() {
    let words = Words::<64, 6>::parse("echo 'hello world' \"a b\" c\\ d '' çay")
        .unwrap();
    assert_eq!(words.len(), 6);
    assert_eq!((0..6).map(|i| words.get(i).unwrap()).collect::<Vec<_>>(),
        ["echo", "hello world", "a b", "c d", "", "çay"]);
    let joined = Words::<16, 2>::parse("ab'cd'\"ef\"").unwrap();
    assert_eq!(joined.get(0), Some("abcdef"));
}

#[test]
fn os_shell_words_rejects_unterminated_escape_nul_and_capacity() {
    assert!(matches!(Words::<16, 3>::parse("echo 'bad"),
        Err(Error::UnterminatedQuote)));
    assert!(matches!(Words::<16, 3>::parse("echo \\"),
        Err(Error::TrailingEscape)));
    assert!(matches!(Words::<16, 3>::parse("echo \0x"), Err(Error::Nul)));
    assert!(matches!(Words::<3, 3>::parse("abcd"), Err(Error::TooManyBytes)));
    assert!(matches!(Words::<8, 1>::parse("a b"), Err(Error::TooManyWords)));
}

#[test]
fn os_shell_words_escaped_quotes_are_data() {
    let words = Words::<32, 2>::parse("say \"a\\\"b\"")
        .unwrap();
    assert_eq!(words.get(0), Some("say"));
    assert_eq!(words.get(1), Some("a\"b"));
    assert_eq!(words.get(2), None);
    let quoted = Words::<16, 1>::parse("\"x\\\"y\"").unwrap();
    assert_eq!(quoted.get(0), Some("x\"y"));
}