To test your data, you can add something like this to a manager script:
using System;
using Models.Core;
namespace Models
{
    [Serializable]
    public class Script : Model, ITest
    {
        public void Run()
        {
            bool testHasFailed = true;
            if (testHasFailed)
                throw new Exception("oh dear");
        }
    }
}
Things to note:
IModels which implement the ITest interface. Therefore, the script must inherit from ModelITest is defined in the Models.Core namespace--run-tests command line switch is provided. If you don’t know what the command line is, this will not affect you.