public void BeforeAfterTimeTest() { var ds1 = new DateSpan(2017, 1, 1, 11, 0, 0, 0); var ds2 = new DateSpan(1940, 12, 25, 12, 0, 0, 0); Assert.True(ds1.BeforeTime(ds2)); Assert.True(ds2.AfterTime(ds1)); Assert.False(ds1.AfterTime(ds2)); }