public async void VariableSetId_Update_length()
        {
            Mock <ILibraryVariableSetRepository> libraryVariableSetRepository = new Mock <ILibraryVariableSetRepository>();

            libraryVariableSetRepository.Setup(x => x.Get(It.IsAny <string>())).Returns(Task.FromResult(new LibraryVariableSet()));

            var validator = new ApiLibraryVariableSetRequestModelValidator(libraryVariableSetRepository.Object);
            await validator.ValidateUpdateAsync(default(string), new ApiLibraryVariableSetRequestModel());

            validator.ShouldHaveValidationErrorFor(x => x.VariableSetId, new string('A', 151));
        }
        private async void BeUniqueByName_Update_Not_Exists()
        {
            Mock <ILibraryVariableSetRepository> libraryVariableSetRepository = new Mock <ILibraryVariableSetRepository>();

            libraryVariableSetRepository.Setup(x => x.ByName(It.IsAny <string>())).Returns(Task.FromResult <LibraryVariableSet>(null));
            var validator = new ApiLibraryVariableSetRequestModelValidator(libraryVariableSetRepository.Object);

            await validator.ValidateUpdateAsync(default(string), new ApiLibraryVariableSetRequestModel());

            validator.ShouldNotHaveValidationErrorFor(x => x.Name, "A");
        }