@Test
public void testInvalidInitSeasonalEstimateAdditive() {

    expectedEx.expect(IllegalArgumentException.class);
    expectedEx.expectMessage("Invalid: Sum of initSeasonalEstimates (-1,100) was outside accepted tolerance. Sum should be 0 with a tolerance within 1% of largest seasonal estimate distance from 0 (±1,011), for ADDITIVE seasonality type.");
    subject.validate(INVALID_ADDITIVE_SEASONAL_COMPONENT, DUMMY_FREQUENCY, HoltWintersSeasonalityType.ADDITIVE);
}