forked from mirrors/gecko-dev
34 lines
1.2 KiB
Rust
34 lines
1.2 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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#[macro_export]
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macro_rules! size_of_test {
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($testname: ident, $t: ty, $expected_size: expr) => {
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#[test]
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fn $testname() {
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let new = ::std::mem::size_of::<$t>();
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let old = $expected_size;
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if new < old {
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panic!(
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"Your changes have decreased the stack size of {} from {} to {}. \
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Good work! Please update the expected size in {}.",
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stringify!($t),
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old,
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new,
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file!()
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)
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} else if new > old {
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panic!(
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"Your changes have increased the stack size of {} from {} to {}. \
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Please consider choosing a design which avoids this increase. \
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If you feel that the increase is necessary, update the size in {}.",
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stringify!($t),
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old,
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new,
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file!()
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)
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}
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}
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};
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}
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