private void TestScheduleTaskWithFixedDelay(IEventLoop loopA)
{
var timestamps = new BlockingCollection <long>();
int expectedTimeStamps = 3;
var allTimeStampsLatch = new CountdownEvent(expectedTimeStamps);
var f = loopA.ScheduleWithFixedDelay(() =>
{
timestamps.Add(Stopwatch.GetTimestamp());
try
{
Thread.Sleep(51);
}
catch { }
allTimeStampsLatch.Signal();
}, TimeSpan.FromMilliseconds(100), TimeSpan.FromMilliseconds(100));
Assert.True(allTimeStampsLatch.Wait(TimeSpan.FromMinutes(1)));
Assert.True(f.Cancel());
Thread.Sleep(300);
Assert.Equal(expectedTimeStamps, timestamps.Count);
// Check if the task was run without a lag.
long?previousTimestamp = null;
foreach (long t in timestamps)
{
if (previousTimestamp is null)
{
previousTimestamp = t;
continue;
}
Assert.True(t - previousTimestamp.Value >= PreciseTime.ToDelayNanos(TimeSpan.FromMilliseconds(150)));
previousTimestamp = t;
}
}
