mod locate {    use crate::{fixture_path, hex_to_id, pack::SMALL_PACK_INDEX};    use bstr::ByteSlice;    use git_object::Kind;    use git_odb::pack;     fn locate<'a>(hex_id: &str, out: &'a mut Vec<u8>) -> pack::Object<'a> {        let bundle = pack::Bundle::at(fixture_path(SMALL_PACK_INDEX)).expect("pack and idx");        bundle            .locate(hex_to_id(hex_id).to_borrowed(), out, &mut pack::cache::DecodeEntryNoop)            .expect("id present")            .expect("read success")    }     mod locate_and_verify {        use crate::{fixture_path, pack::PACKS_AND_INDICES};        use git_odb::pack;         #[test]        fn all() -> Result<(), Box<dyn std::error::Error>> {            for (index_path, data_path) in PACKS_AND_INDICES {                // both paths are equivalent                pack::Bundle::at(fixture_path(index_path))?;                let bundle = pack::Bundle::at(fixture_path(data_path))?;                 let mut buf = Vec::new();                for entry in bundle.index.iter() {                    let obj = bundle                        .locate(entry.oid.to_borrowed(), &mut buf, &mut pack::cache::DecodeEntryNoop)                        .expect("id present")?;                    obj.verify_checksum(entry.oid.to_borrowed())?;                }            }            Ok(())        }    }     #[test]    fn blob() -> Result<(), Box<dyn std::error::Error>> {        let mut out = Vec::new();        let obj = locate("bd46bb3f5bb4ca5431770c4fde0735fb89d382f3", &mut out);         assert_eq!(            obj.data.as_bstr(),            b"GitPython is a python library used to interact with Git repositories.\n\nHi there\n".as_bstr()        );        assert_eq!(obj.kind, Kind::Blob);        let object = obj.decode()?;        assert_eq!(object.kind(), Kind::Blob);        assert_eq!(object.as_blob().expect("blob").data, obj.data);        Ok(())    }     #[test]    fn tree() -> Result<(), Box<dyn std::error::Error>> {        let mut out = Vec::new();        let obj = locate("e90926b07092bccb7bf7da445fae6ffdfacf3eae", &mut out);         assert_eq!(obj.kind, Kind::Tree);        assert_eq!(obj.decode()?.kind(), Kind::Tree);        Ok(())    }     #[test]    fn commit() -> Result<(), Box<dyn std::error::Error>> {        let mut out = Vec::new();        let obj = locate("779c5451ba9fe210ffd1f55db202e55f51acecac", &mut out);         assert_eq!(obj.kind, Kind::Commit);        assert_eq!(obj.decode()?.kind(), Kind::Commit);        Ok(())    }}