Function hostcall_error_events

tests/all/debug.rs:744–784

()

#[tokio::test]
#[cfg_attr(miri, ignore)]
async fn hostcall_error_events() -> wasmtime::Result<()> {
    let _ = env_logger::try_init();

    let (module, mut store) = get_module_and_store(
        |config| {
            config.wasm_exceptions(true);
        },
        r#"
    (module
      (import "" "do_a_trap" (func))
      (func (export "main")
        call 0))
    "#,
    )?;

    debug_event_checker!(
        D, store,
        { 0 ;
          wasmtime::DebugEvent::HostcallError(e) => {
              assert!(format!("{e:?}").contains("secret error message"));
          }
        }
    );

    let (handler, counter) = D::new_and_counter();
    store.set_debug_handler(handler);

    let do_a_trap = Func::wrap(
        &mut store,
        |_caller: Caller<'_, ()>| -> wasmtime::Result<()> {
            Err(wasmtime::format_err!("secret error message"))
        },
    );
    let instance = Instance::new_async(&mut store, &module, &[Extern::Func(do_a_trap)]).await?;
    let func = instance.get_func(&mut store, "main").unwrap();
    let mut results = [];
    let result = func.call_async(&mut store, &[], &mut results).await;
    assert!(result.is_err()); // Uncaught trap.
    assert_eq!(counter.load(Ordering::Relaxed), 1);
    Ok(())
}

#[tokio::test]
#[cfg_attr(miri, ignore)]