public async void Name_Update_length()
        {
            Mock <IBadgeRepository> badgeRepository = new Mock <IBadgeRepository>();

            badgeRepository.Setup(x => x.Get(It.IsAny <int>())).Returns(Task.FromResult(new Badge()));

            var validator = new ApiBadgeRequestModelValidator(badgeRepository.Object);
            await validator.ValidateUpdateAsync(default(int), new ApiBadgeRequestModel());

            validator.ShouldHaveValidationErrorFor(x => x.Name, new string('A', 41));
        }
        public async void Name_Create_null()
        {
            Mock <IBadgeRepository> badgeRepository = new Mock <IBadgeRepository>();

            badgeRepository.Setup(x => x.Get(It.IsAny <int>())).Returns(Task.FromResult(new Badge()));

            var validator = new ApiBadgeRequestModelValidator(badgeRepository.Object);
            await validator.ValidateCreateAsync(new ApiBadgeRequestModel());

            validator.ShouldHaveValidationErrorFor(x => x.Name, null as string);
        }