use std::{borrow::Cow, path::Path}; use git_path::absolutize; fn p(input: &str) -> &Path {    Path::new(input)} #[test]fn no_change_if_there_are_no_trailing_relative_components() {    for input in ["./a/b/c/d", "/absolute/path", "C:\\hello\\world"] {        let path = p(input);        assert_eq!(absolutize(path, None::<&Path>), path);    }} #[test]fn special_cases_around_cwd() -> crate::Result {    let cwd = std::env::current_dir()?;    assert_eq!(        absolutize(p("a/.."), None::<&Path>),        p("."),        "empty paths are never returned as they are invalid"    );    assert_eq!(        absolutize(p("a/../.."), Some(&cwd)),        cwd.parent().expect("parent"),        "it automatically extends the poppable items by using the current working dir"    );    Ok(())} #[test]fn trailing_relative_components_are_resolved() {    for (input, expected) in [        ("./a/b/./c/../d/..", "./a/b"),        ("/a/b/c/.././../.", "/a"),        ("./a/..", "."),        ("a/..", "."),        ("./a/b/../../..", "."),        ("/a/b/../../..", "/"),        ("/a/./b/c/.././../.", "/a"),        ("/a/././c/.././../.", "/"),        ("/a/b/../c/../..", "/"),        ("C:/hello/../a", "C:/a"),        ("./a/../b/..", "./"),        ("/a/../b", "/b"),    ] {        let path = p(input);        assert_eq!(            absolutize(path, None::<&Path>),            Cow::Borrowed(p(expected)),            "'{}' got an unexpected result",            input        );    }}