third_party_rust_regex/tests/api_str.rs

// These tests don't really make sense with the bytes API, so we only test them
// on the Unicode API.

#[test]
fn empty_match_unicode_find_iter() {
    // Tests that we still yield byte ranges at valid UTF-8 sequence boundaries
    // even when we're susceptible to empty width matches.
    let re = regex!(r".*?");
    assert_eq!(
        vec![(0, 0), (3, 3), (4, 4), (7, 7), (8, 8)],
        findall!(re, "Ⅰ1Ⅱ2")
    );
}

#[test]
fn empty_match_unicode_captures_iter() {
    // Same as empty_match_unicode_find_iter, but tests capture iteration.
    let re = regex!(r".*?");
    let ms: Vec<_> = re
        .captures_iter(text!("Ⅰ1Ⅱ2"))
        .map(|c| c.get(0).unwrap())
        .map(|m| (m.start(), m.end()))
        .collect();
    assert_eq!(vec![(0, 0), (3, 3), (4, 4), (7, 7), (8, 8)], ms);
}

#[test]
fn match_as_str() {
    let re = regex!(r"fo+");
    let caps = re.captures("barfoobar").unwrap();
    assert_eq!(caps.get(0).map(|m| m.as_str()), Some("foo"));
    assert_eq!(caps.get(0).map(From::from), Some("foo"));
    assert_eq!(caps.get(0).map(Into::into), Some("foo"));
}