public void TestSubtractSeconds()
{
// Make sure SubtractSeconds produces the correct answer in the correct time standard.
JulianDate test = new JulianDate(2451912, 0.0, TimeStandard.InternationalAtomicTime);
JulianDate result = test.SubtractSeconds(43200.25);
Assert.AreEqual(TimeStandard.InternationalAtomicTime, result.Standard);
Assert.AreEqual(2451911, result.Day);
Assert.AreEqual(43199.75, result.SecondsOfDay);
}
public void TestSecondsDifferenceAtLeapSecond()
{
JulianDate leapSecond = new JulianDate(2453736, 43232, TimeStandard.InternationalAtomicTime);
JulianDate utcDate = new JulianDate(2453736, 43232, TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(-33, utcDate.SecondsDifference(leapSecond));
Assert.AreEqual(33, leapSecond.SecondsDifference(utcDate));
JulianDate secondBeforeLeapSecondUTC = leapSecond.SubtractSeconds(1).ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
JulianDate secondAfterLeapSecondUTC = leapSecond.AddSeconds(1).ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(2, secondBeforeLeapSecondUTC.SecondsDifference(secondAfterLeapSecondUTC));
Assert.AreEqual(2, secondAfterLeapSecondUTC.Subtract(secondBeforeLeapSecondUTC).Seconds);
}
public void TestSecondsDifferenceAtLeapSecond()
{
JulianDate leapSecond = new JulianDate(2453736, 43232, TimeStandard.InternationalAtomicTime);
JulianDate utcDate = new JulianDate(2453736, 43232, TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(-33, utcDate.SecondsDifference(leapSecond));
Assert.AreEqual(33, leapSecond.SecondsDifference(utcDate));
JulianDate secondBeforeLeapSecondUTC = leapSecond.SubtractSeconds(1).ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
JulianDate secondAfterLeapSecondUTC = leapSecond.AddSeconds(1).ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(2, secondBeforeLeapSecondUTC.SecondsDifference(secondAfterLeapSecondUTC));
Assert.AreEqual(2, secondAfterLeapSecondUTC.Subtract(secondBeforeLeapSecondUTC).Seconds);
}