Question

I’m building mvc3 application that should serve about 1000-2000 concurrent users,
I implemented Castle Active Record and simple repository pattern, now i need to unit test all this that it won’t crash on concurrency and in multi-thread environment like iis.
How should I do it?

I’m using nunit testing framework.

My Repository:

//interface
public interface IAbstractRepository<T> where T : class
{
    void Create(T model);
    void Update(T model);
    void Delete(T model);
    int Count();

    T FindById(object id);
    T FindOne(params ICriterion[] criteria);
    IList<T> FindAll();
    IList<T> FindAllByCriteria(params ICriterion[] criteria);
}

//concrete implementation

public class AbstractRepository<T> : IAbstractRepository<T> where T : class
{
    void IAbstractRepository<T>.Create(T model)
    {
        ActiveRecordMediator<T>.Save(model);
    }

    void IAbstractRepository<T>.Update(T model)
    {
        ActiveRecordMediator<T>.Update(model);
    }

    void IAbstractRepository<T>.Delete(T model)
    {
        ActiveRecordMediator<T>.Delete(model);
    }

    int IAbstractRepository<T>.Count()
    {
        return ActiveRecordMediator<T>.Count();
    }

    T IAbstractRepository<T>.FindById(object id)
    {
        return ActiveRecordMediator<T>.FindByPrimaryKey(id);
    }

    T IAbstractRepository<T>.FindOne(params ICriterion[] criteria)
    {
        return ActiveRecordMediator<T>.FindOne(criteria);
    }

    IList<T> IAbstractRepository<T>.FindAll()
    {
        return ActiveRecordMediator<T>.FindAll();
    }

    IList<T> IAbstractRepository<T>.FindAllByCriteria(params ICriterion[] criteria)
    {
        return ActiveRecordMediator<T>.FindAll(criteria);
    }
}

Answer 1

That’s no longer a unit test what you are trying to do. It’s a load test. There are some tools out there that allow you to record some scenario and then simulate concurrent access to your web application executing this scenario:

• Visual Studio Load Tests
• loadUI
• Apache Bench
• Apache JMeter
• Pylot
• Tsung
• Siege