use std::path::{Path, PathBuf}; use git_discover::upwards::Options;use serial_test::serial; #[test]#[serial]fn upwards_with_relative_directories_and_optional_ceiling() -> git_testtools::Result {    let repo = git_testtools::scripted_fixture_read_only("make_basic_repo.sh")?;     let _keep = git_testtools::set_current_dir(repo.join("subdir"))?;    let cwd = std::env::current_dir()?;     for (search_dir, ceiling_dir_component) in [        (".", ".."),        (".", "./.."),        ("./.", "./.."),        (".", "./does-not-exist/../.."),    ] {        let ceiling_dir = cwd.join(ceiling_dir_component);        let (repo_path, _trust) = git_discover::upwards_opts(            search_dir,            Options {                ceiling_dirs: vec![ceiling_dir],                ..Default::default()            },        )        .expect("ceiling dir should allow us to discover the repo");        assert_repo_is_current_workdir(repo_path, Path::new(".."));         let (repo_path, _trust) =            git_discover::upwards_opts(search_dir, Default::default()).expect("without ceiling dir we see the same");        assert_repo_is_current_workdir(repo_path, Path::new(".."));         let (repo_path, _trust) = git_discover::upwards_opts(            search_dir,            Options {                ceiling_dirs: vec![PathBuf::from("..")],                ..Default::default()            },        )        .expect("purely relative ceiling dirs work as well");        assert_repo_is_current_workdir(repo_path, Path::new(".."));         let err = git_discover::upwards_opts(            search_dir,            Options {                ceiling_dirs: vec![PathBuf::from(".")],                ..Default::default()            },        )        .unwrap_err();         assert!(matches!(err, git_discover::upwards::Error::NoMatchingCeilingDir));    }     Ok(())} #[test]#[serial]fn unc_paths_are_handled_on_windows() -> git_testtools::Result {    let repo = git_testtools::scripted_fixture_read_only("make_basic_repo.sh").unwrap();     let _keep = git_testtools::set_current_dir(repo.join("some/very/deeply/nested/subdir")).unwrap();    let cwd = std::env::current_dir().unwrap();    let parent = cwd.parent().unwrap();    // all discoveries should fail, as they'll hit `parent` before finding a git repository.     // dir: normal, ceiling: normal    let res = git_discover::upwards_opts(        &cwd,        Options {            ceiling_dirs: vec![parent.to_path_buf()],            match_ceiling_dir_or_error: false,            ..Default::default()        },    );    assert!(res.is_err(), "{res:?}");     let parent = parent.canonicalize().unwrap();    // dir: normal, ceiling: extended    let res = git_discover::upwards_opts(        &cwd,        Options {            ceiling_dirs: vec![parent],            match_ceiling_dir_or_error: false,            ..Default::default()        },    );    assert!(res.is_err(), "{res:?}");     let cwd = cwd.canonicalize().unwrap();     let parent = cwd.parent().unwrap();    // dir: extended, ceiling: normal    let res = git_discover::upwards_opts(        &cwd,        Options {            ceiling_dirs: vec![parent.to_path_buf()],            match_ceiling_dir_or_error: false,            ..Default::default()        },    );    assert!(res.is_err(), "{res:?}");     let parent = parent.canonicalize().unwrap();    // dir: extended, ceiling: extended    let res = git_discover::upwards_opts(        &cwd,        Options {            ceiling_dirs: vec![parent],            match_ceiling_dir_or_error: false,            ..Default::default()        },    );    assert!(res.is_err(), "{res:?}");    Ok(())} fn assert_repo_is_current_workdir(path: git_discover::repository::Path, work_dir: &Path) {    assert_eq!(        path.into_repository_and_work_tree_directories().1.expect("work dir"),        work_dir,    );}