public void MapLocal_GapAroundAndInTailZoneTransition()
{
// Tail zone is -10 / +5, with the transition occurring just after
// the transition *to* the tail zone from the precalculated zone.
// A local time of one hour after the transition from the precalculated zone (which is -5)
// will therefore be in the gap.
var tailZone = new SingleTransitionDateTimeZone(ThirdInterval.End + Duration.FromHours(1), -10, +5);
var gapZone = new PrecalculatedDateTimeZone("Test",
new[] { FirstInterval, SecondInterval, ThirdInterval }, tailZone);
var mapping = gapZone.MapLocal(ThirdInterval.IsoLocalEnd.PlusHours(1));
Assert.AreEqual(ThirdInterval, mapping.EarlyInterval);
Assert.AreEqual(new ZoneInterval("Single-Early", ThirdInterval.End, tailZone.Transition, Offset.FromHours(-10), Offset.Zero),
mapping.LateInterval);
Assert.AreEqual(0, mapping.Count);
}
public void MapLocal_SingleIntervalAroundTailZoneTransition()
{
// Tail zone is fixed at +5. A local instant of one hour before the transition
// from the precalculated zone (which is -5) will therefore give an instant from
// the tail zone which occurs before the precalculated-to-tail transition,
// and can therefore be ignored, resulting in an overall unambiguous time.
var tailZone = new FixedDateTimeZone(Offset.FromHours(5));
var gapZone = new PrecalculatedDateTimeZone("Test",
new[] { FirstInterval, SecondInterval, ThirdInterval }, tailZone);
var mapping = gapZone.MapLocal(ThirdInterval.IsoLocalEnd.PlusHours(-1));
Assert.AreEqual(ThirdInterval, mapping.EarlyInterval);
Assert.AreEqual(ThirdInterval, mapping.LateInterval);
Assert.AreEqual(1, mapping.Count);
}
public void MapLocal_GapAroundTailZoneTransition()
{
// Tail zone is fixed at +5. A local time at the transition
// from the precalculated zone (which is -5) will therefore give an instant from
// the tail zone which occurs before the precalculated-to-tail transition,
// and can therefore be ignored, resulting in an overall gap.
var tailZone = new FixedDateTimeZone(Offset.FromHours(5));
var gapZone = new PrecalculatedDateTimeZone("Test",
new[] { FirstInterval, SecondInterval, ThirdInterval }, tailZone);
var mapping = gapZone.MapLocal(ThirdInterval.IsoLocalEnd);
Assert.AreEqual(ThirdInterval, mapping.EarlyInterval);
Assert.AreEqual(new ZoneInterval("UTC+05", ThirdInterval.End, Instant.AfterMaxValue, Offset.FromHours(5), Offset.Zero),
mapping.LateInterval);
Assert.AreEqual(0, mapping.Count);
}
public void MapLocal_AmbiguousButTooEarlyInTailZoneTransition()
{
// Tail zone is +10 / +8, with the transition occurring just after
// the transition *to* the tail zone from the precalculated zone.
// A local instant of one hour before after the transition from the precalculated zone (which is -5)
// will therefore be ambiguous, but the resulting instants from the ambiguity occur
// before our transition into the tail zone, so are ignored.
var tailZone = new SingleTransitionDateTimeZone(ThirdInterval.End + Duration.FromHours(1), 10, 8);
var gapZone = new PrecalculatedDateTimeZone("Test",
new[] { FirstInterval, SecondInterval, ThirdInterval }, tailZone);
var mapping = gapZone.MapLocal(ThirdInterval.IsoLocalEnd.PlusHours(-1));
Assert.AreEqual(ThirdInterval, mapping.EarlyInterval);
Assert.AreEqual(ThirdInterval, mapping.LateInterval);
Assert.AreEqual(1, mapping.Count);
}
