anchor.diff:  
   basic_tests() ->
       [get_symmetric_keys_test,
  -     blobCoding,
  +     blobCoding,     
        tester_get_key_quadrant,
        tester_mapInterval,
  -     tester_minKeyInInterval
  +     tester_minKeyInInterval     
       ].
   
   repair_tests() ->
  
positive.code:             SO, SONew, SM, SMNew, SO - SONew, SMNew - SM,
              CO, CONew, CM, CMNew, CO - CONew, CMNew - CM]),
      %clean up
      unittest_helper:stop_ring(),
      ?implies(SO > 0 orelse CO > 0, SONew < SO orelse CONew < CO) andalso
          ?implies(SM =/= SMNew, SMNew > SM) andalso
          ?implies(CM =/= CMNew, CMNew > CM).
  
negative.code: 
  all() ->
      [{group, basic},
       session_ttl,
       {group, repair}     
       ].
  
  groups() ->
  