public void Various()
{
// Names, some offsets, and first transition are all different.
var zone1 = new MultiTransitionDateTimeZone.Builder
{
{ Instants[0], 1, 0, "xx" },
{ Instants[2], 3, 0, "1b" },
{ Instants[4], 2, 1, "1c" },
{ Instants[6], 4, 0, "1d" },
}.Build();
var zone2 = new MultiTransitionDateTimeZone.Builder
{
{ Instants[1], 1, 0, "xx" },
{ Instants[2], 3, 0, "2b" },
{ Instants[4], 1, 2, "2c" },
{ Instants[6], 5, 0, "2d"},
}.Build();
// Even though the first transition point is different, by default that's fine if
// the start point is "inside" both.
AssertEqual(zone1, zone2, Instants[1], Instants[5], ZoneEqualityComparer.Options.OnlyMatchWallOffset);
// When we extend backwards a bit, we can see the difference between the two.
AssertNotEqual(zone1, zone2, Instants[1] - Duration.Epsilon, Instants[5], ZoneEqualityComparer.Options.OnlyMatchWallOffset);
// Or if we force the start and end transitions to be exact...
AssertNotEqual(zone1, zone2, Instants[1], Instants[5], ZoneEqualityComparer.Options.MatchStartAndEndTransitions);
// The first two transitions have the same split between standard and saving...
AssertEqual(zone1, zone2, Instants[1], Instants[4], ZoneEqualityComparer.Options.MatchOffsetComponents);
// The third one (at Instants[4]) doesn't...
AssertNotEqual(zone1, zone2, Instants[1], Instants[5], ZoneEqualityComparer.Options.MatchOffsetComponents);
// The first transition has the same name for the zone interval...
AssertEqual(zone1, zone2, Instants[1], Instants[2], ZoneEqualityComparer.Options.MatchNames);
// The second transition (at Instants[2]) doesn't...
AssertNotEqual(zone1, zone2, Instants[1], Instants[3], ZoneEqualityComparer.Options.MatchNames);
}
public void ElidedTransitions()
{
var zone1 = new MultiTransitionDateTimeZone.Builder
{
{ Instants[3], 0, 0, "a" },
{ Instants[4], 1, 2, "b" },
{ Instants[5], 2, 1, "b" },
{ Instants[6], 1, 0, "d" },
{ Instants[7], 1, 0, "e" },
{ Instants[8], 0, 0, "x" },
}.Build();
var zone2 = new MultiTransitionDateTimeZone.Builder
{
{ Instants[3], 0, 0, "a" },
{ Instants[4], 3, 0, "b" },
// Instants[5] isn't included here: wall offset is the same; components change in zone1
{ Instants[6], 1, 0, "d" },
// Instants[7] isn't included here: offset components are the same; names change in zone1
{ Instants[8], 0, 0, "x" },
}.Build();
AssertEqual(zone1, zone2, Instant.MinValue, Instant.MaxValue, ZoneEqualityComparer.Options.OnlyMatchWallOffset);
// BOT-Instants[6] will elide transitions when ignoring components, even if we match names
AssertEqual(zone1, zone2, Instant.MinValue, Instants[6], ZoneEqualityComparer.Options.MatchNames);
AssertNotEqual(zone1, zone2, Instant.MinValue, Instants[6], ZoneEqualityComparer.Options.MatchOffsetComponents);
// Instants[6]-EOT will elide transitions when ignoring names, even if we match components
AssertEqual(zone1, zone2, Instants[6], Instant.MaxValue, ZoneEqualityComparer.Options.MatchOffsetComponents);
AssertNotEqual(zone1, zone2, Instants[6], Instant.MaxValue, ZoneEqualityComparer.Options.MatchNames);
// But if we require the exact transitions, both fail
AssertNotEqual(zone1, zone2, Instant.MinValue, Instants[6], ZoneEqualityComparer.Options.MatchAllTransitions);
AssertNotEqual(zone1, zone2, Instants[6], Instant.MaxValue, ZoneEqualityComparer.Options.MatchAllTransitions);
}
public void ComplexBuilding()
{
var transition1 = Instant.FromUnixTimeTicks(0L);
var transition2 = Instant.FromUnixTimeTicks(100000L);
var zone = new MultiTransitionDateTimeZone.Builder(2, 1, "X")
{
{ transition1, 2, 0, "Y" },
{ transition2, 1, 1, "Z" }
}.Build();
var actual = zone.GetZoneIntervals(transition1 - Duration.Epsilon, transition2 + Duration.Epsilon).ToList();
// ZoneInterval uses wall offset and savings...
var expected = new[]
{
new ZoneInterval("X", Instant.BeforeMinValue, transition1, Offset.FromHours(3), Offset.FromHours(1)),
new ZoneInterval("Y", transition1, transition2, Offset.FromHours(2), Offset.FromHours(0)),
new ZoneInterval("Z", transition2, Instant.AfterMaxValue, Offset.FromHours(2), Offset.FromHours(1)),
};
CollectionAssert.AreEqual(expected, actual);
}
public void SimpleBuilding()
{
var transition1 = Instant.FromUnixTimeTicks(0L);
var transition2 = Instant.FromUnixTimeTicks(100000L);
var zone = new MultiTransitionDateTimeZone.Builder
{
{ transition1, 5 },
{ transition2, 3 }
}.Build();
var intervals = zone.GetZoneIntervals(transition1 - Duration.Epsilon, transition2 + Duration.Epsilon).ToList();
Assert.AreEqual(3, intervals.Count);
Assert.AreEqual(Offset.Zero, intervals[0].WallOffset);
Assert.AreEqual(Instant.BeforeMinValue, intervals[0].RawStart);
Assert.AreEqual(transition1, intervals[0].End);
Assert.AreEqual(Offset.FromHours(5), intervals[1].WallOffset);
Assert.AreEqual(transition1, intervals[1].Start);
Assert.AreEqual(transition2, intervals[1].End);
Assert.AreEqual(Offset.FromHours(3), intervals[2].WallOffset);
Assert.AreEqual(transition2, intervals[2].Start);
Assert.AreEqual(Instant.AfterMaxValue, intervals[2].RawEnd);
}
public void ElidedTransitions_Degenerate()
{
// Transitions with *nothing* that we care about. (Normally
// these wouldn't even be generated, but we could imagine some
// sort of zone interval in the future which had another property...)
var zone1 = new MultiTransitionDateTimeZone.Builder
{
{ Instants[3], 1, 0, "a" },
{ Instants[4], 1, 0, "a" },
{ Instants[5], 1, 0, "a" },
{ Instants[6], 0 }
}.Build();
var zone2 = new MultiTransitionDateTimeZone.Builder
{
{ Instants[3], 1, 0, "a" },
{ Instants[6], 0 }
}.Build();
// We can match *everything* except exact transitions...
AssertEqual(zone1, zone2, Instant.MinValue, Instant.MaxValue, ZoneEqualityComparer.Options.MatchNames | ZoneEqualityComparer.Options.MatchOffsetComponents | ZoneEqualityComparer.Options.MatchStartAndEndTransitions);
// But not the exact transitions...
AssertNotEqual(zone1, zone2, Instant.MinValue, Instant.MaxValue, ZoneEqualityComparer.Options.MatchAllTransitions);
}
public void GetZoneIntervals_WithOptions_Coalescing()
{
// We'll ask for 1999-2003, so there are three transitions within that.
var transition1 = Instant.FromUtc(2000, 1, 1, 0, 0);
var transition2 = Instant.FromUtc(2001, 1, 1, 0, 0);
var transition3 = Instant.FromUtc(2002, 1, 1, 0, 0);
// And one transition afterwards.
var transition4 = Instant.FromUtc(2004, 1, 1, 0, 0);
var zone = new MultiTransitionDateTimeZone.Builder(0, "0+0")
{
{ transition1, 1, 1, "1+1" },
{ transition2, 0, 2, "0+2" },
{ transition3, 0, 1, "0+1" },
{ transition4, 0, 0, "0+0" }
}.Build();
var interval = new Interval(
Instant.FromUtc(1999, 1, 1, 0, 0),
Instant.FromUtc(2003, 1, 1, 0, 0));
// The zone intervals abutting at transition2 are coalesced,
// because that only changes the name and standard/daylight split.
var zoneIntervals = zone.GetZoneIntervals(interval, ZoneEqualityComparer.Options.OnlyMatchWallOffset).ToList();
Assert.AreEqual(3, zoneIntervals.Count);
CollectionAssert.AreEqual(new[] { transition1, transition3, transition4 },
zoneIntervals.Select(zi => zi.End));
CollectionAssert.AreEqual(new[] { Instant.BeforeMinValue, transition1, transition3 },
zoneIntervals.Select(zi => zi.RawStart));
CollectionAssert.AreEqual(new[] { "0+0", "1+1", "0+1" },
zoneIntervals.Select(zi => zi.Name));
}
public void GetZoneIntervals_WithOptions_NoCoalescing()
{
// We'll ask for 1999-2003, so there are three transitions within that.
var transition1 = Instant.FromUtc(2000, 1, 1, 0, 0);
var transition2 = Instant.FromUtc(2001, 1, 1, 0, 0);
var transition3 = Instant.FromUtc(2002, 1, 1, 0, 0);
// And one transition afterwards.
var transition4 = Instant.FromUtc(2004, 1, 1, 0, 0);
var zone = new MultiTransitionDateTimeZone.Builder(0, "0+0")
{
{ transition1, 1, 1, "1+1" },
{ transition2, 0, 2, "0+2" },
{ transition3, 0, 1, "0+1" },
{ transition4, 0, 0, "0+0" }
}.Build();
var interval = new Interval(
Instant.FromUtc(1999, 1, 1, 0, 0),
Instant.FromUtc(2003, 1, 1, 0, 0));
// No coalescing required, as the names are different.
var zoneIntervals = zone.GetZoneIntervals(interval, ZoneEqualityComparer.Options.MatchNames).ToList();
Assert.AreEqual(4, zoneIntervals.Count);
CollectionAssert.AreEqual(new[] { transition1, transition2, transition3, transition4 },
zoneIntervals.Select(zi => zi.End));
}