[TestMethod]
public void TestUnresolvedParentMap()
{
    var em = new EntityManager();

    //Make a new Employee
    var e = em.CreateEntity<Employee>();
    e.EntityAspect.AddToManager();
    e.EmployeeID = 10; //Giving it an ID isn't necessary for the bug

    //Immediately remove it from the entity manager - in this case, we'd assume it 
    //  disappears forever...
    e.EntityAspect.RemoveFromManager();

    //Sanity check - it became detached and the entity manager no longer thinks it is loaded
    Assert.AreEqual(EntityState.Detached, e.EntityAspect.EntityState);
    Assert.IsFalse(em.IsEntityLoaded(e.EntityAspect.EntityKey));

    //If we break into the debugger at this point, we can see that em.UnresolvedParentMap is still 
    //   holding on to our employee even though it is detached.

    //To double check, we'll use a weak reference to hold on to the employee
    var wr = new WeakReference(e);

    //Clear out of 'strong' reference and force garbage collection to happen
    e = null;
    GC.Collect();

    //At this point, we'd expect the employee to be gone.  But it's not!
    Assert.IsFalse(wr.IsAlive);
}