47 lines
1.1 KiB
Rust
47 lines
1.1 KiB
Rust
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#![allow(clippy::uninlined_format_args)]
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//! The integration tests seem to always have `std` linked, so things that would
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//! depend on that can go here.
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use bytemuck::*;
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#[test]
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fn test_transparent_vtabled() {
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use core::fmt::Display;
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#[repr(transparent)]
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struct DisplayTraitObj(dyn Display);
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unsafe impl TransparentWrapper<dyn Display> for DisplayTraitObj {}
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impl Display for DisplayTraitObj {
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fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
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self.0.fmt(f)
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}
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}
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let v = DisplayTraitObj::wrap_ref(&5i32);
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let s = format!("{}", v);
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assert_eq!(s, "5");
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let mut x = 100i32;
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let v_mut = DisplayTraitObj::wrap_mut(&mut x);
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let s = format!("{}", v_mut);
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assert_eq!(s, "100");
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}
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#[test]
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#[cfg(feature = "extern_crate_alloc")]
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fn test_large_box_alloc() {
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type SuperPage = [[u8; 4096]; 4096];
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let _: Box<SuperPage> = try_zeroed_box().unwrap();
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}
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#[test]
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#[cfg(feature = "extern_crate_alloc")]
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fn test_zero_sized_box_alloc() {
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#[repr(align(4096))]
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struct Empty;
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unsafe impl Zeroable for Empty {}
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let _: Box<Empty> = try_zeroed_box().unwrap();
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}
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