public void Returned_number_of_intervals_per_known_endpoint_equals_history_size()
{
var entries = EntriesBuilder.Build(new Dictionary <DateTime, long>
{
{ now.AddSeconds(-9), 0L }
});
var store = new IntervalsStore <int>(TimeSpan.FromSeconds(10), 33, 0);
store.Store(0, entries);
var timings = store.GetIntervals(now.Add(store.IntervalSize));
Assert.AreEqual(1, timings.Length);
Assert.AreEqual(33, timings[0].Intervals.Length);
// ordering of intervals
var dateTimes = timings[0].Intervals.Select(i => i.IntervalStart).ToArray();
var orderedDateTimes = dateTimes.OrderByDescending(d => d).ToArray();
CollectionAssert.AreEqual(orderedDateTimes, dateTimes);
// length of intervals
var intervalLength = dateTimes[0] - dateTimes[1];
for (var i = 1; i < dateTimes.Length; i++)
{
var dateDiff = dateTimes[i - 1] - dateTimes[i];
Assert.AreEqual(intervalLength, dateDiff);
}
}
public void Delayed_intervals_are_not_reported()
{
const int delayedIntervals = 5;
var intervalSize = TimeSpan.FromSeconds(1);
var delay = TimeSpan.FromTicks(delayedIntervals * intervalSize.Ticks);
var entries = EntriesBuilder.Build(new Dictionary <DateTime, long>
{
{ now.AddSeconds(-4), 1L },
{ now.AddSeconds(-3), 1L },
{ now, 1L }
});
var store = new IntervalsStore <int>(intervalSize, 10, delayedIntervals);
store.Store(0, entries);
var timings = store.GetIntervals(now);
var delayedTimings = store.GetIntervals(now.Add(delay));
Assert.AreEqual(0, timings[0].TotalMeasurements);
Assert.AreEqual(3, delayedTimings[0].TotalMeasurements);
}
public void Intervals_older_than_history_size_are_discarded()
{
var intervalSize = TimeSpan.FromSeconds(10);
var numberOfIntervals = 100;
var historySize = TimeSpan.FromTicks(intervalSize.Ticks * numberOfIntervals);
var entries = EntriesBuilder.Build(new Dictionary <DateTime, long>
{
{ now.Subtract(historySize), 3L }
});
var store = new IntervalsStore <int>(intervalSize, numberOfIntervals, 0);
store.Store(0, entries);
var timings = store.GetIntervals(now.Add(store.IntervalSize));
Assert.IsTrue(timings[0].Intervals.All(i => i.TotalMeasurements == 0));
}