Pause/Continue Jobs

[pradykaushik]

Adding capability to pause/continue jobs without having to restart the cron scheduler.

Usage

cron := New(WithSeconds())
id, _ cron.AddFunc("?/5 * * * * *", func() { fmt.Println("hello") })
cron.Start()
// wait some time.
cron.Pause(id)
// time to continue work.
cron.Continue(id)
// time to stop cron scheduler.
cron.Stop()

Test Coverage

Test code has been added to test pause/continue feature. The following three scenarios have been tested.

1. passing invalid entry id to Pause(...).
2. pausing after single execution, waiting for two scheduling cycles, and then continuing for one more cycle.
3. pausing and continue jobs when multiple jobs have been scheduled.