public void Subtraction_OffsetDateTime()
{
// Test all three approaches... not bothering to check a different calendar,
// but we'll use two different offsets.
OffsetDateTime start = new LocalDateTime(2014, 08, 14, 6, 51).WithOffset(Offset.FromHours(1));
OffsetDateTime end = new LocalDateTime(2014, 08, 14, 18, 0).WithOffset(Offset.FromHours(4));
Duration expected = Duration.FromHours(8) + Duration.FromMinutes(9);
Assert.AreEqual(expected, end - start);
Assert.AreEqual(expected, end.Minus(start));
Assert.AreEqual(expected, OffsetDateTime.Subtract(end, start));
}
