public void DifferenceToStationarity()
{
int n = 100;
// Generate white noise
TimeSeries series = GenerateMA1TimeSeries(0.0, 0.1, 1.0, n);
// Integrate it
series.Integrate(0.0);
//Assert.IsTrue(series.Count == n);
// The result should be correlated
TestResult result1 = series.LjungBoxTest();
Assert.IsTrue(result1.Probability < 0.01);
// Difference to return to original values
series.Difference();
//Assert.IsTrue(series.Count == (n - 1));
// The result should be correlated
TestResult result2 = series.LjungBoxTest();
Assert.IsTrue(result2.Probability > 0.01);
}
