use alloc::rc::Rc; use alloc::sync::Arc; use alloc::task::{LocalWake, Wake}; use core::task::{LocalWaker, Waker}; #[test] #[cfg_attr(miri, should_panic)] // `will_wake` doesn't guarantee that this test will work, and indeed on Miri it fails fn test_waker_will_wake_clone() { struct NoopWaker; impl Wake for NoopWaker { fn wake(self: Arc) {} } let waker = Waker::from(Arc::new(NoopWaker)); let clone = waker.clone(); assert!(waker.will_wake(&clone)); assert!(clone.will_wake(&waker)); } #[test] #[cfg_attr(miri, should_panic)] // `will_wake` doesn't guarantee that this test will work, and indeed on Miri it fails fn test_local_waker_will_wake_clone() { struct NoopWaker; impl LocalWake for NoopWaker { fn wake(self: Rc) {} } let waker = LocalWaker::from(Rc::new(NoopWaker)); let clone = waker.clone(); assert!(waker.will_wake(&clone)); assert!(clone.will_wake(&waker)); }