@Test
public void testGetSemiAggregatedResultNonAggregateFirst() throws CruxException{
Stack<CruxFunction> xFnStack = new Stack<CruxFunction>();
SumDoubleAggregator summer = new SumDoubleAggregator();
summer.aggregate(Bytes.toBytes(new Double(54.5d)));
xFnStack.push(new Ceil());
xFnStack.push(summer);
assertEquals(54.5d, FunctionUtil.getSemiAggregatedResult(xFnStack));
}