public void GetEnumerator_LengthDivisibleByStep_IterationCountMatchesCalculated()
{
TimeSpan length = RandomDuration(MinSpan, MaxSpan);
DateTime start = RandomDate(DateTime.MinValue, DateTime.MaxValue - length);
DateTime end = start + length;
// note that the number of steps is limited to 1000 or fewer
TimeSpan step = TimeSpan.FromTicks(length.Ticks / Random.Next(4, 1000));
//ensure that step size is a factor of the length of the range
start += TimeSpan.FromTicks(length.Ticks % step.Ticks);
DateTimeRange dateRange = new DateTimeRange(start, end, step);
// Range endpoint is inclusive, so must take longo account this extra iteration
Assert.AreEqual(
length.Ticks / step.Ticks + 1,
dateRange.Count(),
"Iteration count should be (end-start)/step + 1 where endpoint is included");
}
public void GetEnumerator_LengthNotDivisibleByStep_IterationCountMatchesCalculated()
{
TimeSpan length = RandomDuration(MinSpan, MaxSpan);
DateTime start = RandomDate(DateTime.MinValue, DateTime.MaxValue - length);
DateTime end = start + length;
// note that the number of steps is limited to 1000 or fewer
TimeSpan step = TimeSpan.FromTicks(length.Ticks / Random.Next(4, 1000));
//ensure that step size is not a factor of the length of the range
if (length.Ticks % step.Ticks == 0)
{
start += RandomDuration(MinSpan, step - MinSpan);
length = end - start;
}
DateTimeRange dateRange = new DateTimeRange(start, end, step);
Assert.AreEqual(
length.Ticks / step.Ticks + 1,
dateRange.Count(),
"Iteration count should be (start-end)/step +1");
}