public void CloseTest()
{
NpgsqlConnection _connection = new NpgsqlConnection(conectionStr);
_connection.Open();
IRoomRepository roomrepo = new RoomRepository(_connection, null);
Room r = new Room(6);
roomrepo.Create(r);
roomrepo.Close(r);
Assert.True(roomrepo.FindRoom(r.ID) == null);
}