use bstr::BString;use git_glob::{pattern::Mode, Pattern};use git_testtools::fixture_bytes; #[test]fn byte_order_marks_are_no_patterns() {    assert_eq!(        flatten(git_attributes::parse::ignore("\u{feff}hello".as_bytes()).next()),        Some((r"hello".into(), Mode::NO_SUB_DIR, 1))    );} #[test]fn line_numbers_are_counted_correctly() {    let input = fixture_bytes("ignore/various.txt");    let actual: Vec<_> = git_attributes::parse::ignore(&input).map(flat_map).collect();    assert_eq!(        actual,        vec![            ("*.[oa]".into(), Mode::NO_SUB_DIR, 2),            ("*.html".into(), Mode::NO_SUB_DIR | Mode::ENDS_WITH, 5),            ("foo.html".into(), Mode::NO_SUB_DIR | Mode::NEGATIVE, 8),            ("*".into(), Mode::NO_SUB_DIR | Mode::ENDS_WITH | Mode::ABSOLUTE, 11),            ("foo".into(), Mode::NEGATIVE | Mode::NO_SUB_DIR | Mode::ABSOLUTE, 12),            ("foo/*".into(), Mode::ABSOLUTE, 13),            ("foo/bar".into(), Mode::ABSOLUTE | Mode::NEGATIVE, 14)        ]    );} #[test]fn line_endings_can_be_windows_or_unix() {    assert_eq!(        git_attributes::parse::ignore(b"unix\nwindows\r\nlast")            .map(flat_map)            .collect::<Vec<_>>(),        vec![            (r"unix".into(), Mode::NO_SUB_DIR, 1),            (r"windows".into(), Mode::NO_SUB_DIR, 2),            (r"last".into(), Mode::NO_SUB_DIR, 3)        ]    );} #[test]fn comments_are_ignored_as_well_as_empty_ones() {    assert!(git_attributes::parse::ignore(b"# hello world").next().is_none());    assert!(git_attributes::parse::ignore(b"\n\r\n\t\t   \n").next().is_none());} #[test]fn backslashes_before_hashes_are_no_comments() {    assert_eq!(        flatten(git_attributes::parse::ignore(br"\#hello").next()),        Some((r"#hello".into(), Mode::NO_SUB_DIR, 1))    );} fn flatten(input: Option<(Pattern, usize)>) -> Option<(BString, git_glob::pattern::Mode, usize)> {    input.map(flat_map)} fn flat_map(input: (Pattern, usize)) -> (BString, git_glob::pattern::Mode, usize) {    (input.0.text, input.0.mode, input.1)}