use bstr::ByteSlice;use git_features::progress;use git_protocol::{fetch, handshake, ls_refs, FetchConnection};use git_transport::Protocol; use crate::fetch::{helper_unused, oid, transport, CloneDelegate, CloneRefInWantDelegate, LsRemoteDelegate}; #[maybe_async::test(feature = "blocking-client", async(feature = "async-client", async_std::test))]async fn clone_abort_prep() -> crate::Result {    let out = Vec::new();    let mut dlg = CloneDelegate {        abort_with: Some(std::io::Error::new(std::io::ErrorKind::Other, "hello world")),        ..Default::default()    };    let mut transport = transport(        out,        "v2/clone.response",        Protocol::V2,        git_transport::client::git::ConnectMode::Daemon,    );    let agent = "agent";    let err = git_protocol::fetch(        &mut transport,        &mut dlg,        helper_unused,        progress::Discard,        FetchConnection::TerminateOnSuccessfulCompletion,        "agent",    )    .await    .expect_err("fetch aborted");    assert_eq!(dlg.pack_bytes, 0, "we aborted before fetching");     assert_eq!(        transport.into_inner().1.as_bstr(),        format!(            "002fgit-upload-pack does/not/matter\0\0version=2\00014command=ls-refs0014agent={}0001000csymrefs0009peel00000000",            git_protocol::agent(agent)        )        .as_bytes()        .as_bstr()    );    match err {        fetch::Error::Io(err) => {            assert_eq!(err.kind(), std::io::ErrorKind::Other);            assert_eq!(err.get_ref().expect("other error").to_string(), "hello world");        }        _ => panic!("should not have another error here"),    }    Ok(())} #[maybe_async::test(feature = "blocking-client", async(feature = "async-client", async_std::test))]async fn ls_remote() -> crate::Result {    let out = Vec::new();    let mut delegate = LsRemoteDelegate::default();    let mut transport = transport(        out,        "v2/clone.response",        Protocol::V2,        git_transport::client::git::ConnectMode::Daemon,    );    let agent = "agent";    git_protocol::fetch(        &mut transport,        &mut delegate,        helper_unused,        progress::Discard,        FetchConnection::AllowReuse,        "agent",    )    .await?;     assert_eq!(        delegate.refs,        vec![            handshake::Ref::Symbolic {                full_ref_name: "HEAD".into(),                object: oid("808e50d724f604f69ab93c6da2919c014667bedb"),                target: "refs/heads/master".into()            },            handshake::Ref::Direct {                full_ref_name: "refs/heads/master".into(),                object: oid("808e50d724f604f69ab93c6da2919c014667bedb")            }        ]    );    assert_eq!(        transport.into_inner().1.as_bstr(),        format!(            "0044git-upload-pack does/not/matter\0\0version=2\0value-only\0key=value\00014command=ls-refs0014agent={}0001000csymrefs0009peel0000",            git_protocol::agent(agent)        )        .as_bytes()        .as_bstr(),        "the delegate is configured to not emit the final flush message, to potentially run more commands on this connection"    );    Ok(())} #[maybe_async::test(feature = "blocking-client", async(feature = "async-client", async_std::test))]async fn ls_remote_abort_in_prep_ls_refs() -> crate::Result {    let out = Vec::new();    let mut delegate = LsRemoteDelegate {        abort_with: Some(std::io::Error::new(std::io::ErrorKind::Other, "hello world")),        ..Default::default()    };    let mut transport = transport(        out,        "v2/clone.response",        Protocol::V2,        git_transport::client::git::ConnectMode::Daemon,    );    let err = git_protocol::fetch(        &mut transport,        &mut delegate,        helper_unused,        progress::Discard,        FetchConnection::AllowReuse,        "agent",    )    .await    .expect_err("ls-refs preparation is aborted");     assert!(delegate.refs.is_empty(), "no refs are fetched");    assert_eq!(        transport.into_inner().1.as_bstr(),        b"0044git-upload-pack does/not/matter\x00\x00version=2\x00value-only\x00key=value\x000000".as_bstr()    );    match err {        fetch::Error::LsRefs(ls_refs::Error::Io(err)) => {            assert_eq!(err.kind(), std::io::ErrorKind::Other);            assert_eq!(err.get_ref().expect("other error").to_string(), "hello world");        }        err => panic!("should not have another error here, got: {err}"),    }    Ok(())} #[maybe_async::test(feature = "blocking-client", async(feature = "async-client", async_std::test))]async fn ref_in_want() -> crate::Result {    let out = Vec::new();    let mut delegate = CloneRefInWantDelegate {        want_refs: vec!["refs/heads/main".into()],        ..CloneRefInWantDelegate::default()    };    let mut transport = transport(        out,        "v2/clone-ref-in-want.response",        Protocol::V2,        git_transport::client::git::ConnectMode::Daemon,    );     let agent = "agent";    git_protocol::fetch(        &mut transport,        &mut delegate,        helper_unused,        progress::Discard,        FetchConnection::TerminateOnSuccessfulCompletion,        "agent",    )    .await?;     assert!(delegate.refs.is_empty(), "Should not receive any ref advertisement");    assert_eq!(        delegate.wanted_refs,        vec![handshake::Ref::Direct {            full_ref_name: "refs/heads/main".into(),            object: oid("9e320b9180e0b5580af68fa3255b7f3d9ecd5af0"),        }]    );    assert_eq!(delegate.pack_bytes, 641, "Should get packfile");    assert_eq!(        transport.into_inner().1.as_bstr(),        format!(            "002fgit-upload-pack does/not/matter\0\0version=2\00012command=fetch0014agent={}0001000ethin-pack000eofs-delta001dwant-ref refs/heads/main0009done00000000",            git_protocol::agent(agent)        )        .as_bytes()        .as_bstr()    );     Ok(())}