ConstantCalc constantCalc = new ConstantCalc(new NullType(), null);
assertEquals(FunUtil.DoubleNull, constantCalc.evaluateDouble(null));
}
public void testNullEvaluatesToConstantIntegerNull() {
ConstantCalc constantCalc = new ConstantCalc(new NullType(), null);
assertEquals(FunUtil.IntegerNull, constantCalc.evaluateInteger(null));
}