@Test
    public void assertBudgetBreakdownTotalCoreBudgetExceptionThrownWhenListIsNull() {

        try {
           budgetCalculation.processBudgetItemsCalculation(annualBudget, breakdown);
           fail("CoreBudgetItemList is null.");
        } catch(Exception e) {
            System.out.println("CoreBudgetItemList is null.");
        }

    }