mod log {    use git_repository as git;     #[test]    fn message() {        assert_eq!(            git::reference::log::message("commit", "the subject\n\nthe body".into(), 0),            "commit (initial): the subject"        );        assert_eq!(            git::reference::log::message("other", "the subject".into(), 1),            "other: the subject"        );         assert_eq!(            git::reference::log::message("rebase", "the subject".into(), 2),            "rebase (merge): the subject"        );    }}mod find {    use std::convert::TryInto;     use git_ref as refs;    use git_ref::FullNameRef;    use git_testtools::hex_to_id;     fn repo() -> crate::Result<git_repository::Repository> {        crate::repo("make_references_repo.sh").map(Into::into)    }     #[test]    fn and_peel() -> crate::Result {        let repo = repo()?;        let mut packed_tag_ref = repo.try_find_reference("dt1")?.expect("tag to exist");        let expected: &FullNameRef = "refs/tags/dt1".try_into()?;        assert_eq!(packed_tag_ref.name(), expected);         assert_eq!(            packed_tag_ref.inner.target,            refs::Target::Peeled(hex_to_id("4c3f4cce493d7beb45012e478021b5f65295e5a3")),            "it points to a tag object"        );         let object = packed_tag_ref.peel_to_id_in_place()?;        let the_commit = hex_to_id("134385f6d781b7e97062102c6a483440bfda2a03");        assert_eq!(object, the_commit, "it is assumed to be fully peeled");        assert_eq!(            object,            packed_tag_ref.peel_to_id_in_place()?,            "peeling again yields the same object"        );         let mut symbolic_ref = repo.find_reference("multi-link-target1")?;         let expected: &FullNameRef = "refs/heads/multi-link-target1".try_into()?;        assert_eq!(symbolic_ref.name(), expected);        assert_eq!(symbolic_ref.peel_to_id_in_place()?, the_commit);         let expected: &FullNameRef = "refs/remotes/origin/multi-link-target3".try_into()?;        assert_eq!(symbolic_ref.name(), expected, "it follows symbolic refs, too");        assert_eq!(symbolic_ref.into_fully_peeled_id()?, the_commit, "idempotency");        Ok(())    }} mod remote {    use crate::remote;    use git_repository as git;     #[test]    fn push_defaults_to_fetch() -> crate::Result {        let repo = remote::repo("many-fetchspecs");        let head = repo.head()?;        let branch = head.clone().try_into_referent().expect("history");        assert_eq!(            branch                .remote_name(git::remote::Direction::Push)                .expect("fallback to fetch"),            branch.remote_name(git::remote::Direction::Fetch).expect("configured"),            "push falls back to fetch"        );        assert_eq!(            branch                .remote(git::remote::Direction::Push)                .expect("configured")?                .name()                .expect("set"),            "origin"        );        assert_eq!(            head.into_remote(git::remote::Direction::Push)                .expect("same with branch")?                .name()                .expect("set"),            "origin"        );        Ok(())    }     #[test]    fn separate_push_and_fetch() -> crate::Result {        for name in ["push-default", "branch-push-remote"] {            let repo = remote::repo(name);            let head = repo.head()?;            let branch = head.clone().try_into_referent().expect("history");             assert_eq!(branch.remote_name(git::remote::Direction::Push).expect("set"), "myself");            assert_eq!(                branch.remote_name(git::remote::Direction::Fetch).expect("set"),                "new-origin"            );             assert_ne!(                branch.remote(git::remote::Direction::Push).transpose()?,                branch.remote(git::remote::Direction::Fetch).transpose()?            );            assert_ne!(                head.clone().into_remote(git::remote::Direction::Push).transpose()?,                head.into_remote(git::remote::Direction::Fetch).transpose()?            );        }        Ok(())    }     #[test]    fn not_configured() -> crate::Result {        let repo = remote::repo("base");        let head = repo.head()?;        let branch = head.clone().try_into_referent().expect("history");         assert_eq!(branch.remote_name(git::remote::Direction::Push), None);        assert_eq!(branch.remote_name(git::remote::Direction::Fetch), None);        assert_eq!(branch.remote(git::remote::Direction::Fetch).transpose()?, None);        assert_eq!(head.into_remote(git::remote::Direction::Fetch).transpose()?, None);         Ok(())    }}