Function rust

noxfile.py:235–286

(session: nox.Session)

@nox.session
@nox.session(name="rust-noclippy")
def rust(session: nox.Session) -> None:
    prof_location = (
        pathlib.Path(".") / ".rust-cov" / str(uuid.uuid4())
    ).absolute()
    rustflags = os.environ.get("RUSTFLAGS", "")
    assert rustflags is not None
    session.env.update(
        {
            "RUSTFLAGS": f"-Cinstrument-coverage  {rustflags}",
            "LLVM_PROFILE_FILE": str(prof_location / "cov-%p.profraw"),
        }
    )

    # TODO: Ideally there'd be a pip flag to install just our dependencies,
    # but not install us.
    pyproject_data = load_pyproject_toml()
    install(session, *pyproject_data["build-system"]["requires"])

    session.run("cargo", "fmt", "--all", "--", "--check", external=True)
    if session.name != "rust-noclippy":
        session.run(
            "cargo",
            "clippy",
            "--all",
            "--",
            "-D",
            "warnings",
            external=True,
        )

    build_output = session.run(
        "cargo",
        "test",
        "--all",
        "--no-run",
        "-q",
        "--message-format=json",
        external=True,
        silent=True,
    )
    session.run("cargo", "test", "--all", external=True)

    # It's None on install-only invocations
    if build_output is not None:
        assert isinstance(build_output, str)
        rust_tests = []
        for line in build_output.splitlines():
            data = json.loads(line)
            if data.get("profile", {}).get("test", False):
                rust_tests.extend(data["filenames"])

        process_rust_coverage(session, rust_tests, prof_location)


@nox.session