public void IsValidFail(IComparable value, IComparable min, IComparable max, bool inclusive)
        {
            var attribute = new CannotBeBetweenAttribute(min, max, inclusive);

            try
            {
                attribute.IsValid(value);

                Assert.Fail();
            }
            catch (ArgumentException ex)
            {
                Assert.AreEqual($"Value must be of type {max.GetType().Name}.", ex.Message);
            }
        }
        public void IsValid(IComparable value, IComparable min, IComparable max, bool inclusive, bool expected)
        {
            var attribute = new CannotBeBetweenAttribute(min, max, inclusive);

            Assert.AreEqual(expected, attribute.IsValid(value));
        }