Function test

tests/all/func.rs:1265–1291

(store: &mut Store<()>, t: T)

#[cfg_attr(miri, ignore)]
fn wrap_multiple_results(config: &mut Config) -> wasmtime::Result<()> {
    fn test<T>(store: &mut Store<()>, t: T) -> wasmtime::Result<()>
    where
        T: WasmRet
            + WasmResults
            + PartialEq
            + Copy
            + std::fmt::Debug
            + EqualToValues
            + 'static
            + Send
            + Sync,
    {
        let f = Func::wrap(&mut *store, move || t);
        let mut results = vec![Val::I32(0); f.ty(&store).results().len()];
        assert_eq!(f.typed::<(), T>(&store)?.call(&mut *store, ())?, t);
        f.call(&mut *store, &[], &mut results)?;
        assert!(t.eq_values(&results));

        let module = Module::new(store.engine(), &T::gen_wasm())?;
        let instance = Instance::new(&mut *store, &module, &[f.into()])?;
        let f = instance.get_func(&mut *store, "foo").unwrap();

        assert_eq!(f.typed::<(), T>(&store)?.call(&mut *store, ())?, t);
        f.call(&mut *store, &[], &mut results)?;
        assert!(t.eq_values(&results));
        Ok(())
    }

    let engine = Engine::new(&config)?;
    let mut store = Store::new(&engine, ());