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#![allow(clippy::uninlined_format_args)]↩
#![allow(unused_imports)]↩
//! The integration tests seem to always have `std` linked, so things that would↩
//! depend on that can go here.↩
↩
use bytemuck::*;↩
use core::num::NonZeroU8;↩
↩
#[test]↩
fn test_transparent_vtabled() {↩
use core::fmt::Display;↩
↩
#[repr(transparent)]↩
struct DisplayTraitObj(dyn Display);↩
↩
unsafe impl TransparentWrapper<dyn Display> for DisplayTraitObj {}↩
↩
impl Display for DisplayTraitObj {↩
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {↩
self.0.fmt(f)↩
}↩
}↩
↩
let v = DisplayTraitObj::wrap_ref(&5i32);↩
let s = format!("{}", v);↩
assert_eq!(s, "5");↩
↩
let mut x = 100i32;↩
let v_mut = DisplayTraitObj::wrap_mut(&mut x);↩
let s = format!("{}", v_mut);↩
assert_eq!(s, "100");↩
}↩
↩
#[test]↩
#[cfg(feature = "extern_crate_alloc")]↩
fn test_large_box_alloc() {↩
type SuperPage = [[u8; 4096]; 4096];↩
let _: Box<SuperPage> = try_zeroed_box().unwrap();↩
}↩
↩
#[test]↩
#[cfg(feature = "extern_crate_alloc")]↩
fn test_zero_sized_box_alloc() {↩
#[repr(align(4096))]↩
struct Empty;↩
unsafe impl Zeroable for Empty {}↩
let _: Box<Empty> = try_zeroed_box().unwrap();↩
}↩
↩
#[test]↩
#[cfg(feature = "extern_crate_alloc")]↩
fn test_try_from_box_bytes() {↩
// Different layout: target alignment is greater than source alignment.↩
assert_eq!(↩
try_from_box_bytes::<u32>(Box::new([0u8; 4]).into()).map_err(|(x, _)| x),↩
Err(PodCastError::AlignmentMismatch)↩
);↩
↩
// Different layout: target alignment is less than source alignment.↩
assert_eq!(↩
try_from_box_bytes::<u32>(Box::new(0u64).into()).map_err(|(x, _)| x),↩
Err(PodCastError::AlignmentMismatch)↩
);↩
↩
// Different layout: target size is greater than source size.↩
assert_eq!(↩
try_from_box_bytes::<[u32; 2]>(Box::new(0u32).into()).map_err(|(x, _)| x),↩
Err(PodCastError::SizeMismatch)↩
);↩
↩
// Different layout: target size is less than source size.↩
assert_eq!(↩
try_from_box_bytes::<u32>(Box::new([0u32; 2]).into()).map_err(|(x, _)| x),↩
Err(PodCastError::SizeMismatch)↩
);↩
↩
// Round trip: alignment is equal to size.↩
assert_eq!(*from_box_bytes::<u32>(Box::new(1000u32).into()), 1000u32);↩
↩
// Round trip: alignment is divider of size.↩
assert_eq!(&*from_box_bytes::<[u8; 5]>(Box::new(*b"hello").into()), b"hello");↩
↩
// It's ok for T to have uninitialized bytes.↩
#[cfg(feature = "derive")]↩
{↩
#[derive(Debug, Copy, Clone, PartialEq, Eq, AnyBitPattern)]↩
struct Foo(u8, u16);↩
assert_eq!(↩
*from_box_bytes::<Foo>(Box::new([0xc5c5u16; 2]).into()),↩
Foo(0xc5u8, 0xc5c5u16)↩
);↩
}↩
}↩
↩
#[test]↩
#[cfg(feature = "extern_crate_alloc")]↩
fn test_box_bytes_of() {↩
assert_eq!(&*box_bytes_of(Box::new(*b"hello")), b"hello");↩
↩
#[cfg(target_endian = "big")]↩
assert_eq!(&*box_bytes_of(Box::new(0x12345678)), b"\x12\x34\x56\x78");↩
#[cfg(target_endian = "little")]↩
assert_eq!(&*box_bytes_of(Box::new(0x12345678)), b"\x78\x56\x34\x12");↩
↩
// It's ok for T to have invalid bit patterns.↩
assert_eq!(&*box_bytes_of(Box::new(NonZeroU8::new(0xc5))), b"\xc5");↩
}↩