[BUG] - OneTimeJob Missing Execution

[gaoyaxuan]

Describe the bug

It is not executing according to LimitModeWait mode, but rather behaving like LimitModeReschedule.

To Reproduce

Steps to reproduce the behavior:

func main() {
	s, _ := gocron.NewScheduler(gocron.WithLimitConcurrentJobs(10, gocron.LimitModeWait))
	s.Start()
	fmt.Println("begin", time.Now().Format("2006-01-02 15:04:05"))
	_, _ = s.NewJob(
		gocron.OneTimeJob(gocron.OneTimeJobStartDateTimes(time.Now().Add(3*time.Second), time.Now().Add(6*time.Second), time.Now().Add(15*time.Second))),
		gocron.NewTask(
			func() error {
				fmt.Println("Run time:", time.Now().Format("2006-01-02 15:04:05"))
				time.Sleep(10 * time.Second)
				return nil
			},
		),
		gocron.WithSingletonMode(gocron.LimitModeWait),
	)

	select {
	case <-time.After(15 * time.Minute):
	}

}

Execution Results:

begin 2024-09-07 15:26:27
Run time: 2024-09-07 15:26:30
Run time: 2024-09-07 15:26:42

time.Now().Add(6*time.Second) not running
If you delete gocron.WithLimitConcurrentJobs(10, gocron.LimitModeWait) or set gocron.WithLimitConcurrentJobs(1, gocron.LimitModeWait) , job all will run

Version

v2.11.0

[JohnRoesler]

hi @gaoyaxuan

This looks similar to the issues discussed in #722.

What's the use case for running both WithLimitConcurrentJobs and WithSingletonMode?

It does look like there is an odd bug going on here, given changing the limit for WithLimitConcurrentJobs effects whether or not the job runs 3 times, or only 2 times.