public void GetHalfyearRangesTest()
{
Enumerable
.Range(1, PeriodCount)
.RunEach(i => {
var halfyearRanges = TimeTool.GetHalfyearRanges(startTime, i, TimeCalendar.NewEmptyOffset());
var start = startTime.StartTimeOfHalfyear();
halfyearRanges.Start.Should().Be(start);
halfyearRanges.End.Should().Be(start.AddMonths(i * TimeSpec.MonthsPerHalfyear));
halfyearRanges.HalfyearCount.Should().Be(i);
});
}