@Test
public void testForecast() {

    val params = forecasterUnderTest.getParams();
    val pointForecast = 132.4;
    val forecastResult = forecasterUnderTest.forecast(metricData, pointForecast);
    val width = params.getAlpha() * Math.pow(pointForecast, params.getBeta());
    val weakWidth = params.getWeakMultiplier() * width;
    val strongWidth = params.getStrongMultiplier() * width;
    assertEquals(pointForecast + strongWidth, forecastResult.getUpperStrong(), TOLERANCE);
    assertEquals(pointForecast + weakWidth, forecastResult.getUpperWeak(), TOLERANCE);
    assertEquals(pointForecast - weakWidth, forecastResult.getLowerWeak(), TOLERANCE);
    assertEquals(pointForecast - strongWidth, forecastResult.getLowerStrong(), TOLERANCE);
}