Cucumber/Cloud/Validation/FarmValidator.cs

using Cloud.Requests;
using FluentValidation;

namespace Cloud.Validation
{
    public class FarmValidator : AbstractValidator<FarmRequest>
    {
        public FarmValidator()
        {
            RuleFor(request => request.RaspberryIP)
                .NotEmpty().WithMessage("IP address can't be empty")
                .Matches(@"^((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\.?\b){4}$").WithMessage("IP address is not valid");

            RuleFor(request => request.Name)
                .NotEmpty().WithMessage("Name can't be empty");
        }
    }
}