Plain Old CLR Objects - Entity Framework 6 Recipes - page 285

public void Attach(T item)
{
_data.Add(item);
}
public void Detach(T item)
{
_data.Remove(item);
}
Type IQueryable.ElementType
{
get { return _query.ElementType; }
}
System.Linq.Expressions.Expression IQueryable.Expression
{
get { return _query.Expression; }
}
IQueryProvider IQueryable.Provider
{
get { return _query.Provider; }
}
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return _data.GetEnumerator();
}
IEnumerator<T> IEnumerable<T>.GetEnumerator()
{
return _data.GetEnumerator();
}
}
public class FakeReservationContext : IReservationContext, IDisposable
{
private IDbSet<Train> trains;
private IDbSet<Schedule> schedules;
private IDbSet<Reservation> reservations;
public FakeReservationContext()
{
trains = new FakeDbSet<Train>();
schedules = new FakeDbSet<Schedule>();
reservations = new FakeDbSet<Reservation>();
}
public IDbSet<Train> Trains
{
get { return trains; }
}