public void Maintenance_Cancellation()
{
var testTask = new TestMaintenanceTask
{
WaitingSeconds = 6
};
// define tasks and start the service
var maintenanceService = new SnMaintenance(new[] { testTask }, null)
{
// very short cycle
TimerInterval = 3
};
maintenanceService.StartAsync(CancellationToken.None).Wait();
// wait for a few cycles (a 6-second task should be executed 2 times)
Thread.Sleep(14 * 1000);
maintenanceService.StopAsync(CancellationToken.None).Wait(TimeSpan.FromSeconds(30));
var callCount1 = testTask.Calls;
// wait for a while and get the count again
Thread.Sleep(7000);
var callCount2 = testTask.Calls;
// the task should have been executed at least a few times
Assert.IsTrue(callCount1 >= 2 && callCount1 < 4, $"call count: {callCount1}");
// there may be a small difference, but not bigger than 1
Assert.IsTrue(callCount2 - callCount1 < 2);
}
private int MaintenanceTest(int taskDelaySeconds, int sleepSeconds)
{
var testTask = new TestMaintenanceTask
{
WaitingSeconds = taskDelaySeconds
};
// define tasks and start the service
var maintenanceService = new SnMaintenance(new[] { testTask }, null)
{
// very short cycle
TimerInterval = 3
};
maintenanceService.StartAsync(CancellationToken.None).Wait();
// wait for a predefined period
Thread.Sleep(sleepSeconds * 1000);
maintenanceService.StopAsync(CancellationToken.None).Wait(TimeSpan.FromSeconds(30));
return(testTask.Calls);
}
