@Test
    public void validateBudgetBreakdownThrowExceptionIfNull() {

        Budget budget = createAnnualBudget("Annual Budget", new BigDecimal("2000"));

        try {
            calculateBudgetBreakdown.calculateBreakdown(budget, null);
            fail("BudgetBreakdown Object Is Null.");
        } catch(Exception e) {
            assertEquals("BudgetBreakdown is null.", e.getMessage());
        }

    }