public void ShouldReturnTrueForValidDays(CallConnectModel model)
        {
            var validator = new BusinessDaysValidator();
            var result    = validator.Validate(model);

            Assert.True(result);
        }
        public void ShouldThrowExceptionForInvalidDays(CallConnectModel model)
        {
            var validator = new BusinessDaysValidator();

            Assert.Throws <InvalidBusinessDaysException>(() => validator.Validate(model));
        }