public void IndicatorsCalculatorChangeIndicatorTest()
        {
            List <double> changeInd = IndicatorsCalculator.CalcChangeIndicator(smallTestData);

            Assert.AreEqual(smallTestData.Count, changeInd.Count);

            double delta = 0.0001d;

            Assert.AreEqual(double.NaN, changeInd[0]);
            Assert.AreEqual(1.0d, changeInd[1], delta); //  100% change (1.0 -> 2.0)
            Assert.AreEqual(0.5d, changeInd[2], delta); //  50% change (2.0 -> 3.0)
        }