use git_repository::{open, Repository, ThreadSafeRepository};use git_testtools::tempfile; pub type Result<T = ()> = std::result::Result<T, Box<dyn std::error::Error>>; pub fn freeze_time() -> git_testtools::Env<'static> {    let frozen_time = "1979-02-26 18:30:00";    git_testtools::Env::new()        .unset("GIT_AUTHOR_NAME")        .unset("GIT_AUTHOR_EMAIL")        .set("GIT_AUTHOR_DATE", frozen_time)        .unset("GIT_COMMITTER_NAME")        .unset("GIT_COMMITTER_EMAIL")        .set("GIT_COMMITTER_DATE", frozen_time)}pub fn repo(name: &str) -> Result<ThreadSafeRepository> {    let repo_path = git_testtools::scripted_fixture_read_only(name)?;    Ok(ThreadSafeRepository::open_opts(repo_path, restricted())?)} pub fn repo_opts(name: &str, opts: open::Options) -> std::result::Result<ThreadSafeRepository, open::Error> {    let repo_path = git_testtools::scripted_fixture_read_only(name).unwrap();    ThreadSafeRepository::open_opts(repo_path, opts)} pub fn named_repo(name: &str) -> Result<Repository> {    let repo_path = git_testtools::scripted_fixture_read_only(name)?;    Ok(ThreadSafeRepository::open_opts(repo_path, restricted())?.to_thread_local())} pub fn named_subrepo_opts(fixture: &str, name: &str, opts: open::Options) -> Result<Repository> {    let repo_path = git_testtools::scripted_fixture_read_only(fixture)?.join(name);    Ok(ThreadSafeRepository::open_opts(repo_path, opts)?.to_thread_local())} pub fn restricted() -> open::Options {    open::Options::isolated()} pub fn restricted_and_git() -> open::Options {    let mut opts = open::Options::isolated();    opts.permissions.env.git_prefix = git_sec::Permission::Allow;    opts.permissions.env.identity = git_sec::Permission::Allow;    opts} pub fn repo_rw(name: &str) -> Result<(Repository, tempfile::TempDir)> {    repo_rw_opts(name, restricted())} pub fn repo_rw_opts(name: &str, opts: git_repository::open::Options) -> Result<(Repository, tempfile::TempDir)> {    let repo_path = git_testtools::scripted_fixture_writable(name)?;    Ok((        ThreadSafeRepository::discover_opts(            repo_path.path(),            Default::default(),            git_sec::trust::Mapping {                full: opts.clone(),                reduced: opts,            },        )?        .to_thread_local(),        repo_path,    ))} pub fn basic_repo() -> Result<Repository> {    repo("make_basic_repo.sh").map(|r| r.to_thread_local())} pub fn basic_rw_repo() -> Result<(Repository, tempfile::TempDir)> {    repo_rw("make_basic_repo.sh")}