public void can_compute_hash_code_for_a_wrapper(string value)
        {
            Assume.That(value != null);

            var wrapper = new SomeStringWrapper(value);

            // ReSharper disable once PossibleNullReferenceException
            wrapper.GetHashCode().Should().Be(value.GetHashCode());
        }
        public void hash_code_for_wrapped_null_is_zero()
        {
            var wrapper = new SomeStringWrapper(null);

            wrapper.GetHashCode().Should().Be(0);
        }