public void Minus_NonZero()
{
Assert.AreEqual(Offset.Zero, ThreeHours.Minus(ThreeHours), "3,000,000 - 1");
Assert.AreEqual(TestObjects.CreatePositiveOffset(6, 0, 0, 0), ThreeHours.Minus(NegativeThreeHours), "1 - (-1)");
Assert.AreEqual(TestObjects.CreateNegativeOffset(15, 0, 0, 0), NegativeTwelveHours.Minus(ThreeHours), "-TwelveHours - threeHours");
}
public void Minus_Zero_IsNeutralElement()
{
Assert.AreEqual(Offset.Zero, Offset.Zero.Minus(Offset.Zero), "0 - 0");
Assert.AreEqual(TestObjects.CreatePositiveOffset(3, 0, 0, 0), ThreeHours.Minus(Offset.Zero), "1 - 0");
Assert.AreEqual(TestObjects.CreateNegativeOffset(3, 0, 0, 0), Offset.Zero.Minus(ThreeHours), "0 - 1");
}