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date: add more tests leap year overflow

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Sylvestre Ledru
2026-02-13 20:50:50 +01:00
parent 9688db08a8
commit 5cf8a6fbdd
1 changed files with 15 additions and 0 deletions
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tests/date.rs
+15
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@@ -112,3 +112,18 @@ fn test_tz_prefix_with_base_date(#[case] input: &str, #[case] expected: &str) {
.unwrap();
check_relative(base, input, expected);
}
// Test leap year overflow: Feb 29 + years → non-leap year should overflow to March 1
// This matches GNU date behavior
#[rstest]
#[case::feb29_1996_plus_1year("1996-02-29 00:00:00", "1 year", "1997-03-01 00:00:00+00:00")]
#[case::feb29_2020_plus_1year("2020-02-29 00:00:00", "1 year", "2021-03-01 00:00:00+00:00")]
#[case::feb29_2000_plus_1year("2000-02-29 00:00:00", "1 year", "2001-03-01 00:00:00+00:00")]
fn test_leap_year_overflow(#[case] base: &str, #[case] input: &str, #[case] expected: &str) {
let now = base
.parse::<DateTime>()
.unwrap()
.to_zoned(TimeZone::UTC)
.unwrap();
check_relative(now, input, expected);
}