public void Add_MethodEquivalents()
{
const int minutes = 23;
const int hours = 3;
const int milliseconds = 40000;
const long seconds = 321;
const long nanoseconds = 12345;
const long ticks = 5432112345;
ZonedDateTime before = SampleZone.AtStrictly(new LocalDateTime(2011, 6, 12, 15, 0));
Assert.AreEqual(before + Duration.OneDay, ZonedDateTime.Add(before, Duration.OneDay));
Assert.AreEqual(before + Duration.OneDay, before.Plus(Duration.OneDay));
Assert.AreEqual(before + Duration.FromHours(hours), before.PlusHours(hours));
Assert.AreEqual(before + Duration.FromHours(-hours), before.PlusHours(-hours));
Assert.AreEqual(before + Duration.FromMinutes(minutes), before.PlusMinutes(minutes));
Assert.AreEqual(before + Duration.FromMinutes(-minutes), before.PlusMinutes(-minutes));
Assert.AreEqual(before + Duration.FromSeconds(seconds), before.PlusSeconds(seconds));
Assert.AreEqual(before + Duration.FromSeconds(-seconds), before.PlusSeconds(-seconds));
Assert.AreEqual(before + Duration.FromMilliseconds(milliseconds), before.PlusMilliseconds(milliseconds));
Assert.AreEqual(before + Duration.FromMilliseconds(-milliseconds), before.PlusMilliseconds(-milliseconds));
Assert.AreEqual(before + Duration.FromTicks(ticks), before.PlusTicks(ticks));
Assert.AreEqual(before + Duration.FromTicks(-ticks), before.PlusTicks(-ticks));
Assert.AreEqual(before + Duration.FromNanoseconds(nanoseconds), before.PlusNanoseconds(nanoseconds));
Assert.AreEqual(before + Duration.FromNanoseconds(-nanoseconds), before.PlusNanoseconds(-nanoseconds));
}
public void Add_MethodEquivalents()
{
ZonedDateTime before = SampleZone.AtStrictly(new LocalDateTime(2011, 6, 12, 15, 0));
Assert.AreEqual(before + Duration.OneStandardDay, ZonedDateTime.Add(before, Duration.OneStandardDay));
Assert.AreEqual(before + Duration.OneStandardDay, before.Plus(Duration.OneStandardDay));
}
public void Add_AroundTimeZoneTransition()
{
// Before the transition at 3pm...
ZonedDateTime before = SampleZone.AtStrictly(new LocalDateTime(2011, 6, 12, 15, 0));
// 24 hours elapsed, and it's 4pm
ZonedDateTime afterExpected = SampleZone.AtStrictly(new LocalDateTime(2011, 6, 13, 16, 0));
ZonedDateTime afterAdd = ZonedDateTime.Add(before, Duration.OneDay);
ZonedDateTime afterOperator = before + Duration.OneDay;
Assert.AreEqual(afterExpected, afterAdd);
Assert.AreEqual(afterExpected, afterOperator);
}
public void AddDuration()
{
// Europe/Dublin transitions from UTC+1 to UTC+0 at 2am (local) on 2017-10-29
var dt = new LocalDateTime(2017, 10, 29, 1, 45, 0);
DateTimeZone dublin = DateTimeZoneProviders.Tzdb["Europe/Dublin"];
ZonedDateTime beforeTransition = new ZonedDateTime(dt, dublin, Offset.FromHours(1));
var result = Snippet.For(ZonedDateTime.Add(beforeTransition, Duration.FromHours(1)));
Assert.AreEqual(new LocalDate(2017, 10, 29), result.Date);
// Adding an hour of elapsed time takes us across the DST transition, so we have
// the same local time (shown on a clock) but a different offset.
Assert.AreEqual(new ZonedDateTime(dt, dublin, Offset.FromHours(0)), result);
// The + operator and Plus instance method are equivalent to the Add static method.
var result2 = Snippet.For(beforeTransition + Duration.FromHours(1));
var result3 = Snippet.For(beforeTransition.Plus(Duration.FromHours(1)));
Assert.AreEqual(result, result2);
Assert.AreEqual(result, result3);
}
