UtilityTests

public void test_getFormattedCurrency(){
        // Test double without decimal points
        assertEquals("$100.00", Utility.getFormattedCurrency(100));

        // Test with one decimal point
        assertEquals("$100.00", Utility.getFormattedCurrency(100.0));

        // Test with two decimal points
        assertEquals("$100.00", Utility.getFormattedCurrency(100.00));

        // Test double with too many points
        assertEquals("$100.00", Utility.getFormattedCurrency(100.001));

        // Test with negative number
        assertEquals("-$100.00", Utility.getFormattedCurrency(-100));
    }

    public void test_getDBDateString(){
        // Test any date
        assertEquals("2015-04-28", Utility.getDBDateString(new LocalDate(2015, 04, 28)));

        // Test years under/over 4 digits
        assertEquals("0123-04-28", Utility.getDBDateString(new LocalDate(123, 4, 28)));
        assertEquals("12345-04-28", Utility.getDBDateString(new LocalDate(12345, 4, 28)));
    }

    public void test_getUIDateString(){
        // Test any date
        assertEquals("March 31, 2015", Utility.getUIDateString(new LocalDate(2015, 3, 31)));

        // Test single digit day
        assertEquals("March 01, 2015", Utility.getUIDateString(new LocalDate(2015, 3, 1)));

        // Test year under 4 digits
        assertEquals("March 01, 0001", Utility.getUIDateString(new LocalDate(1, 3, 1)));

        // Test year over 4 digits
        assertEquals("March 01, 12345", Utility.getUIDateString(new LocalDate(12345, 3, 1)));
    }

    public void test_getDateFromDb(){
        // Test any date
        assertEquals(new LocalDate(2015, 4, 28), Utility.getDateFromDb("2015-04-28"));

        // Try with invalid string
        try{
            Utility.getDateFromDb("2015-0a4-31");
            fail("Expected IllegalArgumentException.");
        } catch(IllegalArgumentException expect){
            // We have nothing to assert about this exception.
        }

        // Try with invalid date
        try{
            Utility.getDateFromDb("2015-04-31");
            fail("Expected IllegalFieldValueException.");
        } catch(IllegalArgumentException expect){
            // Nothing to assert.
        }
    }