Function smoke

tests/all/component_model/async.rs:11–47

()

#[tokio::test]
#[cfg_attr(miri, ignore)]
async fn smoke() -> Result<()> {
    let component = r#"
        (component
            (core module $m
                (func (export "thunk"))
                (func (export "thunk-trap") unreachable)
            )
            (core instance $i (instantiate $m))
            (func (export "thunk")
                (canon lift (core func $i "thunk"))
            )
            (func (export "thunk-trap")
                (canon lift (core func $i "thunk-trap"))
            )
        )
    "#;

    let engine = super::async_engine();
    let component = Component::new(&engine, component)?;
    let mut store = Store::new(&engine, ());
    let instance = Linker::new(&engine)
        .instantiate_async(&mut store, &component)
        .await?;

    let thunk = instance.get_typed_func::<(), ()>(&mut store, "thunk")?;

    thunk.call_async(&mut store, ()).await?;

    let err = instance
        .get_typed_func::<(), ()>(&mut store, "thunk-trap")?
        .call_async(&mut store, ())
        .await
        .unwrap_err();
    assert_eq!(err.downcast::<Trap>()?, Trap::UnreachableCodeReached);

    Ok(())
}

/// Handle an import function, created using component::Linker::func_wrap_async.
#[tokio::test]