Schedulerテストクラス

Schedulerクラス

public class Batch_Scheduler implements Schedulable{
    private final Integer BATCH_SIZE = 200;
    public void execute(SchedulableContext ctx) {
        XXX_Batch batch = new XXX_Batch();
        Database.executeBatch(batch,BATCH_SIZE);
    }
}

Schedulerテストクラス

@isTest
private class Batch_Scheduler_Test {

    static testMethod void myUnitTest() {
        system.test.startTest();
        
        DateTime dt = system.now();
        dt = dt.addMinutes(1);
        String day = string.valueOf(dt.day());
        String month = string.valueOf(dt.month());
        String hour = string.valueOf(dt.hour());
        String minute = string.valueOf(dt.minute());
        String second = string.valueOf(dt.second());
        String year = string.valueOf(dt.year());

        String strJobName = 'Job-' + second + '_' + minute + '_' + hour + '_' + day + '_' + month + '_' + year;
        String strSchedule = '0 ' + minute + ' ' + hour + ' ' + day + ' ' + month + ' ?' + ' ' + year;
        System.schedule(strJobName , strSchedule, new Batch_Scheduler());
        
        system.test.stopTest();
        
    }
}