public void Operation_AppendV_Test01() { var lst1 = nc.GenerateIntSeries(0, 5, 1); var lst2 = nc.GenerateIntSeries(5, 10, 1); var lst3 = nc.GenerateIntSeries(0, 10, 1); //create series from the list var ser1 = new Series(lst1); var ser2 = new Series(lst2); //addition var ser3 = ser1.AppendVerticaly(ser2); Assert.Equal(ser3.ToList(), lst3); }