public async Task GetNextDateTimeMustReturnIncrementalTicks()
{
long startTick = 0;
long expectedTick = 0;
var incrementalClock = new IncrementalClock(startTick);
Func <DateTime> clock = incrementalClock.GetNextDateTime;
while (expectedTick <= 5)
{
await RandomDelay(); // Make sure it's not real time dependent
Assert.Equal(++expectedTick, clock().Ticks);
Assert.Equal(expectedTick, incrementalClock.CurrentTick);
}
}
public async Task GetNextDateTimeMustReturnIncrementTicksInMultiThreadContext()
{
long startTick = 56749874;
var incrementalClock = new IncrementalClock(startTick);
IEnumerable <long> range = Enumerable.Range(1, 5000).Select(x => (long)x);
long[] ticksFromincrementalClock = await Task.WhenAll(range
.Select(async _ =>
{
await RandomDelay();
return(incrementalClock.GetNextDateTime().Ticks);
}));
List <long> expectedTicks = range.Select(x => x + startTick).ToList();
Assert.Equal(ticksFromincrementalClock.OrderBy(x => x).ToList(), expectedTicks);
}
public void Returns_new_value_after_buffering_period_passes()
{
DateTime dateTime = DateTime.MinValue;
var bufferingPeriod = TimeSpan.FromTicks(1);
var incrementalClock = new IncrementalClock();
int executions = 0;
var genericBuffer = new GenericBuffer <int>(factory: () => executions++, bufferingPeriod: bufferingPeriod, clock: () => dateTime);
Assert.Equal(0, genericBuffer.GetValue()); // Before buffering period is past
dateTime += bufferingPeriod;
Assert.Equal(1, genericBuffer.GetValue()); // After first buffering period is past
dateTime += bufferingPeriod;
Assert.Equal(2, genericBuffer.GetValue()); // After second buffering period is past
}
public async Task Returns_new_value_after_buffering_period_passes()
{
CancellationToken ct = CancellationToken.None;
DateTime dateTime = DateTime.MinValue;
var bufferingPeriod = TimeSpan.FromTicks(1);
var incrementalClock = new IncrementalClock();
int executions = 0;
var asyncGenericBuffer = new AsyncGenericBuffer <int>(factory: _ => Task.FromResult(executions++), bufferingPeriod: bufferingPeriod, clock: () => dateTime);
Assert.Equal(0, await asyncGenericBuffer.GetValueAsync(ct)); // Before buffering period is past
dateTime += bufferingPeriod;
Assert.Equal(1, await asyncGenericBuffer.GetValueAsync(ct)); // After first buffering period is past
dateTime += bufferingPeriod;
Assert.Equal(2, await asyncGenericBuffer.GetValueAsync(ct)); // After second buffering period is past
}
