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TEST: Fix size assertion test for const gen

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With const generics we can't avoid the usize (or other type) length
field.
This commit is contained in:
bluss
2021-03-23 17:21:35 +01:00
parent 5502324b6f
commit 18877f243a
1 changed files with 6 additions and 7 deletions
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tests/tests.rs
+6 -7
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@@ -273,21 +273,20 @@ fn test_is_send_sync() {
#[test]
fn test_compact_size() {
// Future rust will kill these drop flags!
// 4 elements size + 1 len + 1 enum tag + [1 drop flag]
// 4 bytes + padding + length
type ByteArray = ArrayVec<u8, 4>;
println!("{}", mem::size_of::<ByteArray>());
assert!(mem::size_of::<ByteArray>() <= 8);
assert!(mem::size_of::<ByteArray>() <= 2 * mem::size_of::<usize>());
// 1 enum tag + 1 drop flag
// just length
type EmptyArray = ArrayVec<u8, 0>;
println!("{}", mem::size_of::<EmptyArray>());
assert!(mem::size_of::<EmptyArray>() <= 2);
assert!(mem::size_of::<EmptyArray>() <= mem::size_of::<usize>());
// 12 element size + 1 enum tag + 3 padding + 1 len + 1 drop flag + 2 padding
// 3 elements + padding + length
type QuadArray = ArrayVec<u32, 3>;
println!("{}", mem::size_of::<QuadArray>());
assert!(mem::size_of::<QuadArray>() <= 24);
assert!(mem::size_of::<QuadArray>() <= 4 * 4 + mem::size_of::<usize>());
}
#[test]