Function tool

tests/mod.rs:38–56

Get a command to run the given tool with Cargo

(name: &'static str)

/// Get a command to run the given tool with Cargo
pub fn tool(name: &'static str) -> Command {
    // XXX: Using nextest somewhat defeats this cache, because it runs each test in a separate
    // process, so the cache has to be rebuilt each time. But having it at least makes me feel
    // like I tried :/
    static TOOL_PATH_CACHE: LazyLock<Mutex<HashMap<&'static str, PathBuf>>> =
        LazyLock::new(|| Mutex::new(HashMap::new()));

    let mut cache = TOOL_PATH_CACHE.lock().unwrap();
    // assert_cmd::cargo::cargo_bin is deprecated but cargo_bin! requires string literal, not &'static str
    #[allow(deprecated)]
    let path = cache
        .entry(name)
        // TODO: Support the various Python tools as well
        .or_insert_with(|| assert_cmd::cargo::cargo_bin(name));

    let mut cmd = Command::new(path);
    cmd.arg("--log-level=TRACE");
    cmd
}