public void it_doesnt_trigger_the_rate_limit_when_the_timeline_is_empty()
{
var timeline = MockRepository.GenerateStub <IEventTimeline>();
timeline.Stub(it => it.RecordEvent(Arg <DateTime> .Is.Anything));
timeline.Stub(it => it.GetLastEventDateAndTime()).Return(null);
IPauseTime pauseTime = MockRepository.GenerateMock <IPauseTime>();
TrickleRateLimiter rateLimiter = new TrickleRateLimiter(timeline, pauseTime);
rateLimiter.CheckAndEnforceRateLimit(DateTime.UtcNow);
pauseTime.AssertWasNotCalled(it => it.Pause(Arg <TimeSpan> .Is.Anything));
}
public void it_doesnt_trigger_the_rate_limit_when_the_last_event_date_is_more_than_1_second_ago()
{
DateTime firstEventDateTime = new DateTime(2000, 1, 1, 12, 0, 0);
DateTime secondEventDateTime = new DateTime(2000, 1, 1, 12, 0, 2);
var timeline = MockRepository.GenerateStub <IEventTimeline>();
timeline.Stub(it => it.RecordEvent(Arg <DateTime> .Is.Anything));
timeline.Stub(it => it.GetLastEventDateAndTime()).Return(firstEventDateTime);
IPauseTime pauseTime = MockRepository.GenerateMock <IPauseTime>();
TrickleRateLimiter rateLimiter = new TrickleRateLimiter(timeline, pauseTime);
rateLimiter.CheckAndEnforceRateLimit(secondEventDateTime);
pauseTime.AssertWasNotCalled(it => it.Pause(Arg <TimeSpan> .Is.Anything));
}
public void it_records_the_updated_timestamp_when_a_pause_was_done()
{
DateTime firstEventDateTime = new DateTime(2000, 1, 1, 12, 0, 0);
DateTime secondEventDateTime = firstEventDateTime.AddMilliseconds(200);
var timeline = MockRepository.GenerateStub <IEventTimeline>();
timeline.Stub(it => it.GetLastEventDateAndTime()).Return(firstEventDateTime);
IPauseTime pauseTime = MockRepository.GenerateMock <IPauseTime>();
TrickleRateLimiter rateLimiter = new TrickleRateLimiter(timeline, pauseTime);
rateLimiter.CheckAndEnforceRateLimit(secondEventDateTime);
timeline.AssertWasCalled(it => it.RecordEvent(Arg <DateTime> .Is.Equal(secondEventDateTime.AddMilliseconds(800))));
pauseTime.AssertWasCalled(it => it.Pause(Arg <TimeSpan> .Is.Equal(TimeSpan.FromMilliseconds(800))));
}
public void it_does_trigger_the_rate_limit_for_enough_time_to_maintain_one_event_per_second()
{
DateTime firstEventDateTime = new DateTime(2000, 1, 1, 12, 0, 0);
DateTime secondEventDateTime = firstEventDateTime.AddMilliseconds(400); // <-- Second event is 400ms after the first event. This should trigger a pause of 600ms.
var timeline = MockRepository.GenerateStub <IEventTimeline>();
timeline.Stub(it => it.RecordEvent(Arg <DateTime> .Is.Anything));
timeline.Stub(it => it.GetLastEventDateAndTime()).Return(firstEventDateTime);
IPauseTime pauseTime = MockRepository.GenerateMock <IPauseTime>();
TrickleRateLimiter rateLimiter = new TrickleRateLimiter(timeline, pauseTime);
rateLimiter.CheckAndEnforceRateLimit(secondEventDateTime);
pauseTime.AssertWasCalled(it => it.Pause(Arg <TimeSpan> .Is.Equal(TimeSpan.FromMilliseconds(600))));
}
public TrickleRateLimiter(IEventTimeline timeline, IPauseTime pauseTime)
{
Timeline = timeline;
_pauseTime = pauseTime;
}
public TrickleRateLimiter(IEventTimeline timeline, IPauseTime pauseTime)
{
Timeline = timeline;
_pauseTime = pauseTime;
}
