@Test
public void testObserveAndTrain() {

    checkObserveAndTrain(HoltWintersSeasonalityType.MULTIPLICATIVE, HoltWintersAustouristsTestHelper.MULT_LEVEL, HoltWintersAustouristsTestHelper.MULT_BASE, HoltWintersAustouristsTestHelper.MULT_SEASONAL);
    checkObserveAndTrain(HoltWintersSeasonalityType.ADDITIVE, HoltWintersAustouristsTestHelper.ADD_LEVEL, HoltWintersAustouristsTestHelper.ADD_BASE, HoltWintersAustouristsTestHelper.ADD_SEASONAL);
}