servo/tests/unit/layout/align_of.rs

26 lines
1.1 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use atomic_refcell::AtomicRefCell;
use layout::PersistentLayoutData;
use script_layout_interface::PartialPersistentLayoutData;
use std::mem::align_of;
fn check_layout_alignment(expected: usize, current: usize) {
if current != expected {
panic!("Your changes have altered the mem alignment of the PartialPersistentLayoutData \
struct to {}, but it must match the {}-alignment of PersistentLayoutData struct. \
Please fix alignment in components/script_layout_interface/lib.rs",
current, expected);
}
}
#[test]
fn test_persistent_layout_data_alignment() {
check_layout_alignment(align_of::<PersistentLayoutData>(),
align_of::<PartialPersistentLayoutData>());
check_layout_alignment(align_of::<AtomicRefCell<PersistentLayoutData>>(),
align_of::<AtomicRefCell<PartialPersistentLayoutData>>());
}