use git_transport::{client, client::Capabilities}; /// Convert a hexadecimal hash into its corresponding `ObjectId` or _panic_.fn oid(hex: &str) -> git_hash::ObjectId {    git_hash::ObjectId::from_hex(hex.as_bytes()).expect("40 bytes hex")} use crate::handshake::{refs, refs::shared::InternalRef, Ref}; #[maybe_async::test(feature = "blocking-client", async(feature = "async-client", async_std::test))]async fn extract_references_from_v2_refs() {    let input = &mut Fixture(        "808e50d724f604f69ab93c6da2919c014667bedb HEAD symref-target:refs/heads/main808e50d724f604f69ab93c6da2919c014667bedb MISSING_NAMESPACE_TARGET symref-target:(null)unborn HEAD symref-target:refs/heads/mainunborn refs/heads/symbolic symref-target:refs/heads/target808e50d724f604f69ab93c6da2919c014667bedb refs/heads/main7fe1b98b39423b71e14217aa299a03b7c937d656 refs/tags/foo peeled:808e50d724f604f69ab93c6da2919c014667bedb7fe1b98b39423b71e14217aa299a03b7c937d6ff refs/tags/blaz"        .as_bytes(),    );     let out = refs::from_v2_refs(input).await.expect("no failure on valid input");     assert_eq!(        out,        vec![            Ref::Symbolic {                full_ref_name: "HEAD".into(),                target: "refs/heads/main".into(),                object: oid("808e50d724f604f69ab93c6da2919c014667bedb")            },            Ref::Direct {                full_ref_name: "MISSING_NAMESPACE_TARGET".into(),                object: oid("808e50d724f604f69ab93c6da2919c014667bedb")            },            Ref::Unborn {                full_ref_name: "HEAD".into(),                target: "refs/heads/main".into(),            },            Ref::Unborn {                full_ref_name: "refs/heads/symbolic".into(),                target: "refs/heads/target".into(),            },            Ref::Direct {                full_ref_name: "refs/heads/main".into(),                object: oid("808e50d724f604f69ab93c6da2919c014667bedb")            },            Ref::Peeled {                full_ref_name: "refs/tags/foo".into(),                tag: oid("7fe1b98b39423b71e14217aa299a03b7c937d656"),                object: oid("808e50d724f604f69ab93c6da2919c014667bedb")            },            Ref::Direct {                full_ref_name: "refs/tags/blaz".into(),                object: oid("7fe1b98b39423b71e14217aa299a03b7c937d6ff")            },        ]    )} #[maybe_async::test(feature = "blocking-client", async(feature = "async-client", async_std::test))]async fn extract_references_from_v1_refs() {    let input = &mut Fixture(        "73a6868963993a3328e7d8fe94e5a6ac5078a944 HEAD21c9b7500cb144b3169a6537961ec2b9e865be81 MISSING_NAMESPACE_TARGET73a6868963993a3328e7d8fe94e5a6ac5078a944 refs/heads/main8e472f9ccc7d745927426cbb2d9d077de545aa4e refs/pull/13/headdce0ea858eef7ff61ad345cc5cdac62203fb3c10 refs/tags/git-commitgraph-v0.0.021c9b7500cb144b3169a6537961ec2b9e865be81 refs/tags/git-commitgraph-v0.0.0^{}"            .as_bytes(),    );    let out = refs::from_v1_refs_received_as_part_of_handshake_and_capabilities(        input,        Capabilities::from_bytes(b"\0symref=HEAD:refs/heads/main symref=MISSING_NAMESPACE_TARGET:(null)")            .expect("valid capabilities")            .0            .iter(),    )    .await    .expect("no failure from valid input");    assert_eq!(        out,        vec![            Ref::Symbolic {                full_ref_name: "HEAD".into(),                target: "refs/heads/main".into(),                object: oid("73a6868963993a3328e7d8fe94e5a6ac5078a944")            },            Ref::Direct {                full_ref_name: "MISSING_NAMESPACE_TARGET".into(),                object: oid("21c9b7500cb144b3169a6537961ec2b9e865be81")            },            Ref::Direct {                full_ref_name: "refs/heads/main".into(),                object: oid("73a6868963993a3328e7d8fe94e5a6ac5078a944")            },            Ref::Direct {                full_ref_name: "refs/pull/13/head".into(),                object: oid("8e472f9ccc7d745927426cbb2d9d077de545aa4e")            },            Ref::Peeled {                full_ref_name: "refs/tags/git-commitgraph-v0.0.0".into(),                tag: oid("dce0ea858eef7ff61ad345cc5cdac62203fb3c10"),                object: oid("21c9b7500cb144b3169a6537961ec2b9e865be81")            },        ]    )} #[test]fn extract_symbolic_references_from_capabilities() -> Result<(), client::Error> {    let caps = client::Capabilities::from_bytes(        b"\0unrelated symref=HEAD:refs/heads/main symref=ANOTHER:refs/heads/foo symref=MISSING_NAMESPACE_TARGET:(null) agent=git/2.28.0",    )?        .0;    let out = refs::shared::from_capabilities(caps.iter()).expect("a working example");     assert_eq!(        out,        vec![            InternalRef::SymbolicForLookup {                path: "HEAD".into(),                target: Some("refs/heads/main".into())            },            InternalRef::SymbolicForLookup {                path: "ANOTHER".into(),                target: Some("refs/heads/foo".into())            },            InternalRef::SymbolicForLookup {                path: "MISSING_NAMESPACE_TARGET".into(),                target: None            }        ]    );    Ok(())} #[cfg(any(feature = "async-client", feature = "blocking-client"))]struct Fixture<'a>(&'a [u8]); #[cfg(feature = "blocking-client")]impl<'a> std::io::Read for Fixture<'a> {    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {        self.0.read(buf)    }} #[cfg(feature = "blocking-client")]impl<'a> std::io::BufRead for Fixture<'a> {    fn fill_buf(&mut self) -> std::io::Result<&[u8]> {        self.0.fill_buf()    }     fn consume(&mut self, amt: usize) {        self.0.consume(amt)    }} #[cfg(feature = "blocking-client")]impl<'a> git_transport::client::ReadlineBufRead for Fixture<'a> {    fn readline(        &mut self,    ) -> Option<std::io::Result<Result<git_packetline::PacketLineRef<'_>, git_packetline::decode::Error>>> {        use bstr::{BStr, ByteSlice};        let bytes: &BStr = self.0.into();        let mut lines = bytes.lines();        let res = lines.next()?;        self.0 = lines.as_bytes();        Some(Ok(Ok(git_packetline::PacketLineRef::Data(res))))    }} #[cfg(feature = "async-client")]impl<'a> Fixture<'a> {    fn project_inner(self: std::pin::Pin<&mut Self>) -> std::pin::Pin<&mut &'a [u8]> {        #[allow(unsafe_code)]        unsafe {            std::pin::Pin::new(&mut self.get_unchecked_mut().0)        }    }} #[cfg(feature = "async-client")]impl<'a> futures_io::AsyncRead for Fixture<'a> {    fn poll_read(        self: std::pin::Pin<&mut Self>,        cx: &mut std::task::Context<'_>,        buf: &mut [u8],    ) -> std::task::Poll<std::io::Result<usize>> {        self.project_inner().poll_read(cx, buf)    }} #[cfg(feature = "async-client")]impl<'a> futures_io::AsyncBufRead for Fixture<'a> {    fn poll_fill_buf(        self: std::pin::Pin<&mut Self>,        cx: &mut std::task::Context<'_>,    ) -> std::task::Poll<std::io::Result<&[u8]>> {        self.project_inner().poll_fill_buf(cx)    }     fn consume(self: std::pin::Pin<&mut Self>, amt: usize) {        self.project_inner().consume(amt)    }} #[cfg(feature = "async-client")]#[async_trait::async_trait(?Send)]impl<'a> git_transport::client::ReadlineBufRead for Fixture<'a> {    async fn readline(        &mut self,    ) -> Option<std::io::Result<Result<git_packetline::PacketLineRef<'_>, git_packetline::decode::Error>>> {        use bstr::{BStr, ByteSlice};        let bytes: &BStr = self.0.into();        let mut lines = bytes.lines();        let res = lines.next()?;        self.0 = lines.as_bytes();        Some(Ok(Ok(git_packetline::PacketLineRef::Data(res))))    }}