public void CheckCostTest_LimitNumber10001_ReturnFalse()
        {
            DataValidation dataValidation = new DataValidation();
            bool           factResult;
            int            number = 10001;

            factResult = dataValidation.CheckCost(number);
            Assert.IsFalse(factResult);
        }
        public void CheckCostTest_EquivalentNumber18599_ReturnFalse()
        {
            DataValidation dataValidation = new DataValidation();
            bool           factResult;
            int            number = 18599;

            factResult = dataValidation.CheckCost(number);
            Assert.IsFalse(factResult);
        }
        public void CheckCostTest_EquivalentNumber9589_ReturnTrue()
        {
            DataValidation dataValidation = new DataValidation();
            bool           factResult;
            int            number = 9589;

            factResult = dataValidation.CheckCost(number);
            Assert.IsTrue(factResult);
        }