Scheduling a task that runs once a day results in March 28 being skipped

[AlexCovizzi]

Affects: Spring Framework 5.3.1

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Problem: Scheduled task marked with the annotation @Scheduled(cron = ""0 0 9 * * *"", zone = "Europe/Amsterdam") did not run on March 28

Expected behaviour: The scheduled task should have run on March 28

How to reproduce: The bug seems to be related to the class CronExpression introduced in version 5.3

ZonedDateTime current = ZonedDateTime.of(LocalDateTime.parse("2021-03-27T09:00:00"), ZoneId.of("Europe/Amsterdam"));
CronExpression cronExpression = CronExpression.parse("0 0 9 * * *");
ZonedDateTime next = cronExpression.next(current);

In this case the value returned by cronExpression.next() is 2021-03-29T09:00:00 instead of the expected 2021-03-28T09:00:00

[guilroux]

Hello,

Looks like there is still a problem for the following case :
ZonedDateTime current = ZonedDateTime.of(LocalDateTime.parse("2021-03-28T00:31:00"), ZoneId.of("Europe/Amsterdam")); CronExpression cronExpression = CronExpression.parse("0 5 0 * * *"); ZonedDateTime next = cronExpression.next(current);

In this case the value returned by cronExpression.next() is 2021-03-30T00:05 instead of the expected 2021-03-29T00:05

[sbrannen]

@guilroux, please do not comment on closed tickets.

If you believe you have discovered a bug, please open a new ticket to report it.

Thanks