public void Attaching_previously_detached_entity_should_not_throw_exception()
{
using (var db = new DetachmentContext())
{
var login = new DeLogin
{
Id = 14
};
var order = new DeOrder
{
Id = 19
};
login.Orders.Add(order);
order.Login = login;
db.Logins.Attach(login);
((IObjectContextAdapter)db).ObjectContext.Detach(login);
Assert.Null(order.Login);
db.Logins.Attach(login);
Assert.Same(login, order.Login);
Assert.True(login.Orders.Contains(order));
Assert.Equal(EntityState.Unchanged, db.Entry(login).State);
Assert.Equal(EntityState.Unchanged, db.Entry(order).State);
}
}
public void Querying_for_previously_detached_entity_should_not_throw_exception()
{
using (var db = new DetachmentContext())
{
var login = db.Logins.Include(l => l.Orders).First();
var order = login.Orders.First();
((IObjectContextAdapter)db).ObjectContext.Detach(login);
Assert.Null(order.Login);
login = db.Logins.First();
Assert.Same(login, order.Login);
Assert.True(login.Orders.Contains(order));
Assert.Equal(EntityState.Unchanged, db.Entry(login).State);
Assert.Equal(EntityState.Unchanged, db.Entry(order).State);
}
}