mod from_git_dir_file {    use std::{        io::Write,        path::{Path, PathBuf},    };     use git_testtools::{tempfile, tempfile::NamedTempFile};     #[cfg(not(windows))]    #[test]    fn absolute_path_unix() -> crate::Result {        let (path, _) = write_and_read(b"gitdir: /absolute/path/.git")?;        assert_eq!(path, Path::new("/absolute/path/.git"));        Ok(())    }     #[cfg(windows)]    #[test]    fn absolute_path_windows() -> crate::Result {        let (path, _) = write_and_read(b"gitdir: C:/absolute/path/.git")?;        assert_eq!(path, Path::new("C:/absolute/path/.git"));         let (path, _) = write_and_read(b"gitdir: C:\\absolute\\path\\.git")?;        assert_eq!(path, Path::new("C:\\absolute\\path\\.git"));        Ok(())    }     #[test]    fn relative_path_is_made_absolute_relative_to_containing_dir() -> crate::Result {        let (path, gitdir_file) = write_and_read(b"gitdir: relative/path")?;        assert_eq!(path, gitdir_file.parent().unwrap().join(Path::new("relative/path")));        Ok(())    }     fn write_and_read(content: &[u8]) -> crate::Result<(PathBuf, PathBuf)> {        let file = gitdir_with_content(content)?;        Ok((git_discover::path::from_gitdir_file(file.path())?, file.path().into()))    }     fn gitdir_with_content(content: &[u8]) -> std::io::Result<NamedTempFile> {        let mut file = tempfile::NamedTempFile::new()?;        file.write_all(content)?;        Ok(file)    }}