rust/library/core/tests/pin.rs
Christiaan Dirkx 8f27e3cb1b Make some methods of Pin unstable const
Make the following methods unstable const under the `const_pin` feature:
- `new`
- `new_unchecked`
- `into_inner`
- `into_inner_unchecked`
- `get_ref`
- `into_ref`

Also adds tests for these methods in a const context.

Tracking issue: #76654
2020-09-13 01:55:34 +02:00

21 lines
654 B
Rust

use core::pin::Pin;
#[test]
fn pin_const() {
// test that the methods of `Pin` are usable in a const context
const POINTER: &'static usize = &2;
const PINNED: Pin<&'static usize> = Pin::new(POINTER);
const PINNED_UNCHECKED: Pin<&'static usize> = unsafe { Pin::new_unchecked(POINTER) };
assert_eq!(PINNED_UNCHECKED, PINNED);
const INNER: &'static usize = Pin::into_inner(PINNED);
assert_eq!(INNER, POINTER);
const INNER_UNCHECKED: &'static usize = unsafe { Pin::into_inner_unchecked(PINNED) };
assert_eq!(INNER_UNCHECKED, POINTER);
const REF: &'static usize = PINNED.get_ref();
assert_eq!(REF, POINTER)
}