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fix(ci): pick mtime nanoseconds a Windows SystemTime can hold

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A Windows `SystemTime` is a FILETIME, whose tick is 100ns, so
`UNIX_EPOCH + Duration::new(_, 123_456_789)` came back as
`123_456_700` and the assertion failed on a rounding this conversion
never saw. Every nanosecond figure in the case is now a multiple of 100,
which still exercises the full nanos field.
This commit is contained in:
l0ng-ai
2026-07-28 19:57:26 +08:00
parent 26f3a73f58
commit ff76c01ac7
1 changed files with 7 additions and 2 deletions
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crates/tty7-core/src/host/mod.rs
+7 -2
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@@ -600,15 +600,20 @@ mod tests {
/// Pre-epoch times round-trip exactly rather than clamping to zero, because
/// the editor compares mtimes for equality.
///
/// Every nanosecond figure here is a multiple of 100: a Windows
/// `SystemTime` is a FILETIME, whose tick *is* 100ns, so a finer value
/// would be rounded on the way in and the assertion would be about
/// `SystemTime`'s resolution rather than about this conversion.
#[test]
fn mtime_handles_both_sides_of_the_epoch() {
use std::time::{Duration, UNIX_EPOCH};
let t = UNIX_EPOCH + Duration::new(1_700_000_000, 123_456_789);
let t = UNIX_EPOCH + Duration::new(1_700_000_000, 123_456_700);
assert_eq!(
MTime::from_system_time(t),
MTime {
secs: 1_700_000_000,
nanos: 123_456_789
nanos: 123_456_700
}
);
assert_eq!(