@Test
public void testCECalculate() {
final SimpleLocalEstimator sle = new SimpleLocalEstimator(1/360.0);
final TimeSeries<Double> locale = sle.calculate(ts);
final VolatilityCompositor ce = new ConstantEstimator(1);
final TimeSeries<Double> value = ce.calculate(locale);
assertNotNull(value) ;
}