/// <summary>Adds an <see cref="XmlDuration"/> to a <see cref="DateTimeOffset"/> and returns the result.</summary>
public static DateTimeOffset Add(this DateTimeOffset dateTime, XmlDuration duration)
{
return(XmlDuration.Add(dateTime, duration));
}
/// <summary>Subtracts an <see cref="XmlDuration"/> from a <see cref="DateTimeOffset"/> and returns the result.</summary>
public static DateTimeOffset Subtract(this DateTimeOffset dateTime, XmlDuration duration)
{
return(XmlDuration.Subtract(dateTime, duration));
}
public void TestXmlDuration()
{
XmlDuration d1 = new XmlDuration(new TimeSpan(100, 10, 1, 2, 3));
Assert.AreEqual(100, d1.Days);
Assert.AreEqual(10, d1.Hours);
Assert.AreEqual(1, d1.Minutes);
Assert.AreEqual(2, d1.WholeSeconds);
Assert.AreEqual(3, d1.Milliseconds);
Assert.AreEqual(2.003, d1.Seconds);
Assert.IsFalse(d1.IsNegative);
Assert.AreEqual("P100DT10H1M2.003S", d1.ToString());
XmlDuration d2 = new XmlDuration(new TimeSpan(100, 10, 1, 2, 3).Negate());
Assert.AreEqual(0, d2.TotalMonths);
Assert.AreEqual(100, d2.Days);
Assert.AreEqual(10, d2.Hours);
Assert.AreEqual(1, d2.Minutes);
Assert.AreEqual(2, d2.WholeSeconds);
Assert.AreEqual(3, d2.Milliseconds);
Assert.AreEqual(2.003, d2.Seconds);
Assert.IsTrue(d2.IsNegative);
Assert.AreEqual("-P100DT10H1M2.003S", d2.ToString());
Assert.AreEqual(d2, XmlDuration.Parse("-P100DT10H1M2.003S"));
Assert.IsTrue(d1.Negate() == d2);
Assert.IsTrue(d1 == d2.Negate());
Assert.IsTrue(d1.Negate().Negate() == d1);
Assert.IsTrue(d2.Abs() == d1);
d1 = new XmlDuration(1, 2, 3);
Assert.AreEqual(1, d1.Years);
Assert.AreEqual(2, d1.Months);
Assert.AreEqual(14, d1.TotalMonths);
Assert.AreEqual("P1Y2M3D", d1.ToString());
d2 = d1 + new XmlDuration(2, 3, 4);
Assert.AreEqual(3, d2.Years);
Assert.AreEqual(5, d2.Months);
Assert.AreEqual(41, d2.TotalMonths);
Assert.AreEqual(7, d2.Days);
DateTime dt = new DateTime(2000, 1, 1).Add(d2);
Assert.AreEqual(2003, dt.Year);
Assert.AreEqual(6, dt.Month);
Assert.AreEqual(8, dt.Day);
d1 = new XmlDuration(1, 2, 3, 4, 5, 6, 7);
Assert.AreEqual(1, d1.Years);
Assert.AreEqual(2, d1.Months);
Assert.AreEqual(3, d1.Days);
Assert.AreEqual(4, d1.Hours);
Assert.AreEqual(5, d1.Minutes);
Assert.AreEqual(6, d1.WholeSeconds);
Assert.AreEqual(7, d1.Milliseconds);
Assert.AreEqual("P1Y2M3DT4H5M6.007S", d1.ToString());
Assert.AreEqual(d1, XmlDuration.Parse("P1Y2M3DT4H5M6.007S"));
Assert.AreEqual("P0D", XmlDuration.Zero.ToString());
d2 = d1.Negate();
Assert.AreEqual(XmlDuration.Zero, d1 + d2);
Assert.AreEqual(XmlDuration.Zero, d2 + d1);
Assert.AreEqual(XmlDuration.Zero, XmlDuration.Zero.Negate());
Assert.AreEqual(XmlDuration.Zero, XmlDuration.MaxValue + XmlDuration.MinValue);
Assert.AreEqual(XmlDuration.Zero, XmlDuration.MinValue + XmlDuration.MaxValue);
d1 = new XmlDuration(1, 2, 3, 4, 5, 6) + new XmlDuration(0, 1, 2, 3, 4, 5).Negate();
Assert.AreEqual(1, d1.Years);
Assert.AreEqual(1, d1.Months);
Assert.AreEqual(1, d1.Days);
Assert.AreEqual(1, d1.Hours);
Assert.AreEqual(1, d1.Minutes);
Assert.AreEqual(1, d1.Seconds);
d1 = new XmlDuration(1, 2, 3).Negate() + new XmlDuration(2, 3, 4).Negate();
Assert.AreEqual(3, d1.Years);
Assert.AreEqual(5, d1.Months);
Assert.AreEqual(7, d1.Days);
d1 = new XmlDuration(1, 2, 3) - new XmlDuration(2, 0, 3);
Assert.AreEqual(0, d1.Years);
Assert.AreEqual(10, d1.Months);
Assert.AreEqual(0, d1.Days);
Assert.IsTrue(d1.IsNegative);
TestHelpers.TestException <ArgumentException>(delegate { new XmlDuration(1, 2, 3).Subtract(new XmlDuration(0, 0, 5)); });
TestHelpers.TestException <ArgumentException>(delegate { new XmlDuration(1, 2, 3).Subtract(new XmlDuration(2, 0, 1)); });
d1 = new XmlDuration(1, 2, 3, 4, 5, 6);
Assert.AreEqual(new XmlDuration(1, 2, 103, 4, 5, 6), d1.AddDays(100));
Assert.AreEqual(new XmlDuration(1, 2, 7, 8, 5, 6), d1.AddHours(100));
Assert.AreEqual(new XmlDuration(1, 2, 3, 4, 5, 6, 100), d1.AddMilliseconds(100));
Assert.AreEqual(new XmlDuration(1, 2, 3, 5, 45, 6), d1.AddMinutes(100));
Assert.AreEqual(new XmlDuration(9, 6, 3, 4, 5, 6), d1.AddMonths(100));
Assert.AreEqual(new XmlDuration(1, 2, 3, 4, 6, 46), d1.AddSeconds(100));
Assert.AreEqual(new XmlDuration(101, 2, 3, 4, 5, 6), d1.AddYears(100));
Assert.AreEqual(new XmlDuration(1, 2, 3).Negate(), new XmlDuration(-1, -2, -3));
Assert.AreEqual(new XmlDuration(1, 2, 3, 4, 5, 6).Negate(), new XmlDuration(-1, -2, -3, -4, -5, -6));
Assert.AreEqual(new XmlDuration(0, 10, 3), new XmlDuration(1, -2, 3));
TestHelpers.TestException <ArgumentException>(delegate { new XmlDuration(1, 2, -3); });
TestHelpers.TestException <ArgumentException>(delegate { new XmlDuration(-1, -2, 3); });
Assert.AreEqual(new TimeSpan(0, 0, 3), new XmlDuration(new TimeSpan(0, 0, 3)).ToTimeSpan());
Assert.AreEqual(new TimeSpan(0, 0, 3).Negate(), new XmlDuration(new TimeSpan(0, 0, 3).Negate()).ToTimeSpan());
Assert.AreEqual(new TimeSpan(0, 0, 3).Negate(), new XmlDuration(new TimeSpan(0, 0, 3)).Negate().ToTimeSpan());
TestHelpers.TestException <InvalidOperationException>(delegate { new XmlDuration(1, 2, 3).ToTimeSpan(); });
}