public void SubstractTest()
{
FixedTimeStepSeries ts1 = new FixedTimeStepSeries();
FixedTimeStepSeries ts2 = new FixedTimeStepSeries();
ts1.StartTime = new DateTime(2010, 1, 1);
ts1.AddRange(new double[] { 2, 3, 4 });
ts1.TimeStepSize = TimeStepUnit.Month;
ts2.StartTime = new DateTime(2010, 1, 1);
ts2.AddRange(new double[] { 1, 1, 1 });
ts2.TimeStepSize = TimeStepUnit.Month;
FixedTimeStepSeries actual;
actual = TSTools.Substract(ts1, ts2);
Assert.AreEqual(1, actual.GetValue(new DateTime(2010, 1, 1)));
Assert.AreEqual(2, actual.GetValue(new DateTime(2010, 2, 1)));
}