public void TimeSpanExtMillisecondTest_subtraction_operator()
{
DateTime dt = new DateTime(2000, 1, 1, 0, 0, 2, 222);
int value = 2222;
TimeSpanExtMillisecond edt = new TimeSpanExtMillisecond(value);
DateTime expected = new DateTime(2000, 1, 1);
DateTime actual;
actual = dt - edt;
Assert.AreEqual(expected, actual);
}
public void Subtraction_from_TimeSpanExtBase_returns_a_valid_TimeSpanExtBase()
{
DateTime dt = new DateTime(2000, 1, 1, 0, 0, 0, 0);
TimeSpanExtMillisecond edt = new TimeSpanExtMillisecond(3);
TimeSpanExtMillisecond edt2 = new TimeSpanExtMillisecond(2);
DateTime expected = new DateTime(2000, 1, 1, 0, 0, 0, 1);
TimeSpanExt composite = edt - edt2;
DateTime actual;
actual = dt + composite;
Assert.AreEqual(expected, actual);
}