gistfile1.txt

public with sharing class AssertCallback {

  private static Map<Type, IAssertCallback> callbacks = new Map<Type, IAssertCallback>();
	 
	public interface IAssertCallback
	{
		void assert(String location, Object state);
	}
	
	public static void assert(Type stateType, String location, Object state)
	{
		if(!Test.isRunningTest())
			return;	
		if(callbacks.containsKey(stateType))
			callbacks.get(stateType).assert(location, state);
	}
	
	public static void registerCallback(Type stateClass, IAssertCallback assertCallback)
	{
		callbacks.put(stateClass, assertCallback);	
	}
}