library/std/src/os/windows/io/tests.rs

   1 #[test]
   2 fn test_niche_optimizations_socket() {
   3     use crate::mem::size_of;
   4     use crate::os::windows::io::{
   5         BorrowedSocket, FromRawSocket, IntoRawSocket, OwnedSocket, RawSocket,
   6     };
   7
   8     assert_eq!(size_of::<Option<OwnedSocket>>(), size_of::<RawSocket>());
   9     assert_eq!(size_of::<Option<BorrowedSocket<'static>>>(), size_of::<RawSocket>(),);
  10     unsafe {
  11         #[cfg(target_pointer_width = "32")]
  12         let (min, max) = (i32::MIN as u32, i32::MAX as u32);
  13         #[cfg(target_pointer_width = "64")]
  14         let (min, max) = (i64::MIN as u64, i64::MAX as u64);
  15
  16         assert_eq!(OwnedSocket::from_raw_socket(min).into_raw_socket(), min);
  17         assert_eq!(OwnedSocket::from_raw_socket(max).into_raw_socket(), max);
  18         assert_eq!(Some(OwnedSocket::from_raw_socket(min)).unwrap().into_raw_socket(), min);
  19         assert_eq!(Some(OwnedSocket::from_raw_socket(max)).unwrap().into_raw_socket(), max);
  20     }
  21 }