public void GetSinkVolumesTest()
        {
            SinkSourceBoundary target = new SinkSourceBoundary(-200);

            target.ContactGeometry = XYPolygon.GetSquare(1);
            target.WaterSample     = new WaterPacket(1);

            double actual = target.GetSinkVolume(DateTime.Now, new TimeSpan(1, 0, 0));

            Assert.AreEqual(200 * 3600, actual, 0.000001);
        }