public void Test_DivisableByThree()
        {
            PandigitalPrimeValidator ppValidator = new PandigitalPrimeValidator();

            Assert.True(ppValidator.DivisableByThree(999999));
            Assert.False(ppValidator.DivisableByThree(88));
            Assert.True(ppValidator.DivisableByThree(12345));
        }
        public void Test_GetMaxPandigital()
        {
            PandigitalPrimeValidator ppValidator = new PandigitalPrimeValidator();

            Assert.AreEqual(ppValidator.GetNextMaxPandigital(473283), 43210);
        }