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#![allow(dead_code)]
use ::*;
use core::mem;
#[repr(C)]
#[derive(Debug, Default, Copy, Eq, Clone, PartialEq)]
struct Dummy1 {
field1: u64,
field2: u32,
field3: u16,
field4: u8,
field5: u8,
}
unsafe impl Plain for Dummy1 {}
#[repr(C)]
#[derive(Debug, Default, Copy, Eq, Clone, PartialEq)]
struct Dummy2 {
field1: u8,
field2: u8,
field3: u16,
field4: u32,
field5: u64,
}
unsafe impl Plain for Dummy2 {}
fn as_bytes<T: ?Sized>(r: &T) -> &[u8] {
unsafe { methods::as_bytes(r) }
}
fn as_mut_bytes<T: Plain + ?Sized>(r: &mut T) -> &mut [u8] {
unsafe { methods::as_mut_bytes(r) }
}
#[test]
fn one_too_short() {
let b = vec![0u8; mem::size_of::<Dummy1>() - 1];
let r = Dummy1::from_bytes(&b);
assert!(r == Err(Error::TooShort));
}
#[test]
fn unaligned() {
let b = vec![0u8; mem::size_of::<Dummy1>() + 1];
let b = &b[1..];
let r = Dummy1::from_bytes(&b);
assert!(r == Err(Error::BadAlignment));
}
#[test]
fn copy_test() {
let t1 = Dummy1 {
field1: 0xaaaaaaaaaaaaaaaau64,
field2: 0xbbbbbbbbu32,
field3: 0xccccu16,
field4: 0xddu8,
field5: 0xeeu8,
};
let mut t2 = Dummy2::default();
assert!(t2.copy_from_bytes(as_bytes(&t1)) == Ok(()));
assert!(t2.field1 == 0xaau8);
assert!(t2.field2 == 0xaau8);
assert!(t2.field3 == 0xaaaau16);
assert!(t2.field4 == 0xaaaaaaaau32);
assert!(t2.field5 == 0xbbbbbbbbccccddeeu64 || t2.field5 == 0xeeddccccbbbbbbbbu64);
let sz = mem::size_of::<Dummy2>();
assert!(t2.copy_from_bytes(&as_bytes(&t1)[..sz - 1]) == Err(Error::TooShort));
}
#[test]
fn basic_function() {
let t1 = Dummy1 {
field1: 0xaaaaaaaaaaaaaaaau64,
field2: 0xbbbbbbbbu32,
field3: 0xccccu16,
field4: 0xddu8,
field5: 0xeeu8,
};
let r1: &Dummy2 = from_bytes(as_bytes(&t1)).unwrap();
assert!(r1.field1 == 0xaau8);
assert!(r1.field2 == 0xaau8);
assert!(r1.field3 == 0xaaaau16);
assert!(r1.field4 == 0xaaaaaaaau32);
assert!(r1.field5 == 0xbbbbbbbbccccddeeu64 || r1.field5 == 0xeeddccccbbbbbbbbu64);
let r2 = as_bytes(r1);
assert!(r2.len() == mem::size_of::<Dummy1>());
assert!(r2[5] == 0xaa);
let size = r2.len();
let r3 = as_bytes(r2);
assert!(r3.len() == size);
let r4 = Dummy1::from_bytes(r3).unwrap();
let r5 = from_bytes::<Dummy2>(as_bytes(r4)).unwrap();
{
let r6 = slice_from_bytes::<Dummy1>(as_bytes(r5)).unwrap();
assert!(r6.len() == 1);
assert!(t1 == r6[0]);
}
let r7 = slice_from_bytes::<u64>(as_bytes(r5)).unwrap();
assert!(r7.len() == 2);
assert!(r7[0] == 0xaaaaaaaaaaaaaaaau64);
assert!(r7[1] == 0xbbbbbbbbccccddeeu64 || r7[1] == 0xeeddccccbbbbbbbbu64);
}