anchor.diff:              "MBRs are disjoint"),
       etap:is(vtree:disjoint(Mbr1_2, {-27, 2, 18, 10}), false,
               "MBRs are not disjoint").
  -    
  +
   
   test_lookup() ->
       etap:plan(6),
  
positive.code:                   {ok, Tree1Node1_2_3_4_5},
              "Insert a nodes into a full leaf node (root node)"),
      ok.
      
  
  test_within() ->
      etap:plan(4),
  
negative.code:             not_flipped,
              "Not flipped Bbox"),
      ok.
  
  
  test_area() ->
      etap:plan(5),
  