@isTest
private class SetOlympusCalendarWorkDayBatchSchTest {
    static testMethod void SchedulerTest() {
        String FireTime = '0 0 0 3 9 ? 2022';
        Test.startTest();
        String jobId = system.schedule('SetOlympusCalendarWorkDayBatchSchTest', FireTime, new SetOlympusCalendarWorkDayBatchSchedule());
        Test.stopTest();
        CronTrigger ct = [SELECT Id, CronExpression, TimesTriggered, NextFireTime FROM CronTrigger WHERE id = :jobId];
        // Verify the expressions are the same
        System.assertEquals(FireTime, ct.CronExpression);
        // Verify the job has not run
        System.assertEquals(0, ct.TimesTriggered);
        // Verify the next time the job will run
        System.assertEquals('2022-09-03 00:00:00', String.valueOf(ct.NextFireTime));
    }
}