@Test
public void testGetRho() {

    ArrayList<double[]> interpolateValues = getInterpolationValues();
    double rayleighOpticalThickness = 1.0;
    double massAir = 1.0;
    double cosOZARad = 1.5;
    double cosSZARad = 1.5;
    double[] fourierSeriesCof = {1.2, 2.2, 3.0};
    double[] fourierSeriesExpected = algo.getFourierSeries(rayleighOpticalThickness, massAir, cosOZARad, cosSZARad, interpolateValues, fourierSeriesCof);
    assertEquals(3, fourierSeriesExpected.length);
    assertEquals(0.6321, fourierSeriesExpected[0], 1e-4);
}