third_party/rust/tokio/tests/sync_errors.rs


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#![warn(rust_2018_idioms)]
#![cfg(feature = "sync")]

#[cfg(target_arch = "wasm32")]
use wasm_bindgen_test::wasm_bindgen_test as test;

fn is_error<T: std::error::Error + Send + Sync>() {}

#[test]
fn mpsc_error_bound() {
    use tokio::sync::mpsc::error;

    is_error::<error::SendError<()>>();
    is_error::<error::TrySendError<()>>();
}

#[test]
fn oneshot_error_bound() {
    use tokio::sync::oneshot::error;

    is_error::<error::RecvError>();
    is_error::<error::TryRecvError>();
}

#[test]
fn watch_error_bound() {
    use tokio::sync::watch::error;

    is_error::<error::SendError<()>>();
}