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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/bytemuck/tests/cast_slice_tests.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/bytemuck/tests/cast_slice_tests.rs')
-rw-r--r--vendor/bytemuck/tests/cast_slice_tests.rs197
1 files changed, 0 insertions, 197 deletions
diff --git a/vendor/bytemuck/tests/cast_slice_tests.rs b/vendor/bytemuck/tests/cast_slice_tests.rs
deleted file mode 100644
index ce6dedc..0000000
--- a/vendor/bytemuck/tests/cast_slice_tests.rs
+++ /dev/null
@@ -1,197 +0,0 @@
-#![allow(clippy::unnecessary_cast)]
-#![allow(clippy::manual_slice_size_calculation)]
-
-use core::mem::size_of;
-
-use bytemuck::*;
-
-#[test]
-fn test_try_cast_slice() {
- // some align4 data
- let u32_slice: &[u32] = &[4, 5, 6];
- // the same data as align1
- let the_bytes: &[u8] = try_cast_slice(u32_slice).unwrap();
-
- assert_eq!(
- u32_slice.as_ptr() as *const u32 as usize,
- the_bytes.as_ptr() as *const u8 as usize
- );
- assert_eq!(
- u32_slice.len() * size_of::<u32>(),
- the_bytes.len() * size_of::<u8>()
- );
-
- // by taking one byte off the front, we're definitely mis-aligned for u32.
- let mis_aligned_bytes = &the_bytes[1..];
- assert_eq!(
- try_cast_slice::<u8, u32>(mis_aligned_bytes),
- Err(PodCastError::TargetAlignmentGreaterAndInputNotAligned)
- );
-
- // by taking one byte off the end, we're aligned but would have slop bytes for
- // u32
- let the_bytes_len_minus1 = the_bytes.len() - 1;
- let slop_bytes = &the_bytes[..the_bytes_len_minus1];
- assert_eq!(
- try_cast_slice::<u8, u32>(slop_bytes),
- Err(PodCastError::OutputSliceWouldHaveSlop)
- );
-
- // if we don't mess with it we can up-alignment cast
- try_cast_slice::<u8, u32>(the_bytes).unwrap();
-}
-
-#[test]
-fn test_try_cast_slice_mut() {
- // some align4 data
- let u32_slice: &mut [u32] = &mut [4, 5, 6];
- let u32_len = u32_slice.len();
- let u32_ptr = u32_slice.as_ptr();
-
- // the same data as align1
- let the_bytes: &mut [u8] = try_cast_slice_mut(u32_slice).unwrap();
- let the_bytes_len = the_bytes.len();
- let the_bytes_ptr = the_bytes.as_ptr();
-
- assert_eq!(
- u32_ptr as *const u32 as usize,
- the_bytes_ptr as *const u8 as usize
- );
- assert_eq!(u32_len * size_of::<u32>(), the_bytes_len * size_of::<u8>());
-
- // by taking one byte off the front, we're definitely mis-aligned for u32.
- let mis_aligned_bytes = &mut the_bytes[1..];
- assert_eq!(
- try_cast_slice_mut::<u8, u32>(mis_aligned_bytes),
- Err(PodCastError::TargetAlignmentGreaterAndInputNotAligned)
- );
-
- // by taking one byte off the end, we're aligned but would have slop bytes for
- // u32
- let the_bytes_len_minus1 = the_bytes.len() - 1;
- let slop_bytes = &mut the_bytes[..the_bytes_len_minus1];
- assert_eq!(
- try_cast_slice_mut::<u8, u32>(slop_bytes),
- Err(PodCastError::OutputSliceWouldHaveSlop)
- );
-
- // if we don't mess with it we can up-alignment cast
- try_cast_slice_mut::<u8, u32>(the_bytes).unwrap();
-}
-
-#[test]
-fn test_types() {
- let _: i32 = cast(1.0_f32);
- let _: &mut i32 = cast_mut(&mut 1.0_f32);
- let _: &i32 = cast_ref(&1.0_f32);
- let _: &[i32] = cast_slice(&[1.0_f32]);
- let _: &mut [i32] = cast_slice_mut(&mut [1.0_f32]);
- //
- let _: Result<i32, PodCastError> = try_cast(1.0_f32);
- let _: Result<&mut i32, PodCastError> = try_cast_mut(&mut 1.0_f32);
- let _: Result<&i32, PodCastError> = try_cast_ref(&1.0_f32);
- let _: Result<&[i32], PodCastError> = try_cast_slice(&[1.0_f32]);
- let _: Result<&mut [i32], PodCastError> = try_cast_slice_mut(&mut [1.0_f32]);
-}
-
-#[test]
-fn test_bytes_of() {
- assert_eq!(bytes_of(&0xaabbccdd_u32), &0xaabbccdd_u32.to_ne_bytes());
- assert_eq!(
- bytes_of_mut(&mut 0xaabbccdd_u32),
- &mut 0xaabbccdd_u32.to_ne_bytes()
- );
- let mut a = 0xaabbccdd_u32;
- let a_addr = &a as *const _ as usize;
- // ensure addresses match.
- assert_eq!(bytes_of(&a).as_ptr() as usize, a_addr);
- assert_eq!(bytes_of_mut(&mut a).as_ptr() as usize, a_addr);
-}
-
-#[test]
-fn test_try_from_bytes() {
- let u32s = [0xaabbccdd, 0x11223344_u32];
- let bytes = bytemuck::cast_slice::<u32, u8>(&u32s);
- assert_eq!(try_from_bytes::<u32>(&bytes[..4]), Ok(&u32s[0]));
- assert_eq!(
- try_from_bytes::<u32>(&bytes[..5]),
- Err(PodCastError::SizeMismatch)
- );
- assert_eq!(
- try_from_bytes::<u32>(&bytes[..3]),
- Err(PodCastError::SizeMismatch)
- );
- assert_eq!(
- try_from_bytes::<u32>(&bytes[1..5]),
- Err(PodCastError::TargetAlignmentGreaterAndInputNotAligned)
- );
-}
-
-#[test]
-fn test_try_from_bytes_mut() {
- let mut abcd = 0xaabbccdd;
- let mut u32s = [abcd, 0x11223344_u32];
- let bytes = bytemuck::cast_slice_mut::<u32, u8>(&mut u32s);
- assert_eq!(try_from_bytes_mut::<u32>(&mut bytes[..4]), Ok(&mut abcd));
- assert_eq!(try_from_bytes_mut::<u32>(&mut bytes[..4]), Ok(&mut abcd));
- assert_eq!(
- try_from_bytes_mut::<u32>(&mut bytes[..5]),
- Err(PodCastError::SizeMismatch)
- );
- assert_eq!(
- try_from_bytes_mut::<u32>(&mut bytes[..3]),
- Err(PodCastError::SizeMismatch)
- );
- assert_eq!(
- try_from_bytes::<u32>(&bytes[1..5]),
- Err(PodCastError::TargetAlignmentGreaterAndInputNotAligned)
- );
-}
-
-#[test]
-fn test_from_bytes() {
- let abcd = 0xaabbccdd_u32;
- let aligned_bytes = bytemuck::bytes_of(&abcd);
- assert_eq!(from_bytes::<u32>(aligned_bytes), &abcd);
- assert!(core::ptr::eq(from_bytes(aligned_bytes), &abcd));
-}
-
-#[test]
-fn test_from_bytes_mut() {
- let mut a = 0xaabbccdd_u32;
- let a_addr = &a as *const _ as usize;
- let aligned_bytes = bytemuck::bytes_of_mut(&mut a);
- assert_eq!(*from_bytes_mut::<u32>(aligned_bytes), 0xaabbccdd_u32);
- assert_eq!(
- from_bytes_mut::<u32>(aligned_bytes) as *const u32 as usize,
- a_addr
- );
-}
-
-// like #[should_panic], but can be a part of another test, instead of requiring
-// it to be it's own test.
-macro_rules! should_panic {
- ($ex:expr) => {
- assert!(
- std::panic::catch_unwind(|| {
- let _ = $ex;
- })
- .is_err(),
- concat!("should have panicked: `", stringify!($ex), "`")
- );
- };
-}
-
-#[test]
-fn test_panics() {
- should_panic!(cast_slice::<u8, u32>(&[1u8, 2u8]));
- should_panic!(cast_slice_mut::<u8, u32>(&mut [1u8, 2u8]));
- should_panic!(from_bytes::<u32>(&[1u8, 2]));
- should_panic!(from_bytes::<u32>(&[1u8, 2, 3, 4, 5]));
- should_panic!(from_bytes_mut::<u32>(&mut [1u8, 2]));
- should_panic!(from_bytes_mut::<u32>(&mut [1u8, 2, 3, 4, 5]));
- // use cast_slice on some u32s to get some align>=4 bytes, so we can know
- // we'll give from_bytes unaligned ones.
- let aligned_bytes = bytemuck::cast_slice::<u32, u8>(&[0, 0]);
- should_panic!(from_bytes::<u32>(&aligned_bytes[1..5]));
-}