anchor.diff:  -define(NS_LOG, "ns_log").
   
   get_current_version() ->
  -    {3,0,1}.
  +    {3,0,99}.
   
   ensure_data_dir() ->
       RawDir = path_config:component_path(data),
  
positive.code:                                                {config_path, cfg_path}]},
                    {set, {node, _, memcached_config}, memcached_config},
                    {set, {node, _, port_servers}, port_servers_cfg}],
                   do_upgrade_config_from_3_0_to_3_0_1(Cfg, Default)).
  
  
  no_upgrade_on_current_version_test() ->
  
negative.code:               {port, 3}]},
              {{node, node(), memcached_config}, memcached_config}]],
      Default = [{{node, node(), port_servers}, port_servers_cfg},
                 {{node, node(), memcached}, [{ssl_port, 1}, {verbosity, 3},
                                              {engines, [something]}]},
                 {{node, node(), memcached_config}, memcached_config}],
  
      ?assertMatch([{set, {node, _, memcached}, [{engines, [something]},
                                                 {ssl_port, 1}, {verbosity, 2},
                                                 {port, 3}]}],
                   do_upgrade_config_from_3_0_to_3_0_1(Cfg, Default)).
  
  upgrade_3_0_1_to_3_0_99_test() ->
      Cfg = [[{some_key, some_value},
              {{node, node(), memcached},
               [{engines, old_value},
                {ssl_port, 1},
                {verbosity, 2},
                {port, 3}]},
              {{node, node(), memcached_config}, memcached_config}]],
      Default = [{{node, node(), port_servers}, port_servers_cfg},
                 {{node, node(), memcached}, [{ssl_port, 1},
                                              {config_path, cfg_path},
                                              {engines, [something]}]},
  