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add math utils; integrate checked expression macros

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Signed-off-by: Jason Volk <jason@zemos.net>
This commit is contained in:
Jason Volk 2024-07-07 03:36:50 +00:00
parent 611f09829e
commit 5e72d36800
7 changed files with 68 additions and 0 deletions
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19
src/core/utils/tests.rs
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@ -62,3 +62,22 @@ fn common_prefix_none() {
let output = string::common_prefix(&input);
assert_eq!(output, "");
}
#[test]
fn checked_add() {
use utils::math::checked;
let a = 1234;
let res = checked!(a + 1).unwrap();
assert_eq!(res, 1235);
}
#[test]
#[should_panic(expected = "overflow")]
fn checked_add_overflow() {
use utils::math::checked;
let a: u64 = u64::MAX;
let res = checked!(a + 1).expect("overflow");
assert_eq!(res, 0);
}