@Test(expected = NullPointerException.class)
public void testGetMassAirNull() {

    float[] massAir = gaseousAbsorptionAlgo.getMassAir(null, new float[]{3, 4});
    assertEquals(2, massAir.length);
    assertArrayEquals(new float[]{0.84070706f, -3.9328835f}, massAir, 0);
    fail("The sun zenith angel most not be null");
}