public void GivenMobileNumber_WhenNoSpaceAfterCountryCode_ShouldReturnFalse()
        {
            UserRegistrationMain userRegistration = new UserRegistrationMain();
            bool result = userRegistration.ValidateMobileNumber("717654378967");

            Assert.IsFalse(result);
        }
        public void GivenMobileNumber_WhenProper_ShouldReturnTrue()
        {
            UserRegistrationMain userRegistration = new UserRegistrationMain();
            bool result = userRegistration.ValidateMobileNumber("91 99865467843");

            Assert.IsTrue(result);
        }
        public void GivenMobileNumber_WhenLessThanTenDigits_ShouldReturnFalse()
        {
            UserRegistrationMain userRegistration = new UserRegistrationMain();
            bool result = userRegistration.ValidateMobileNumber("71 765437896");

            Assert.IsFalse(result);
        }