anchor.diff:           ?_test(mark_valid_not_stored_case(test_env(11, []))),
            ?_test(mark_valid_stored_case(test_env(12, []))),
            ?_test(all_stored_marks_stored_case(test_env(13, []))),
  -         ?_test(get_all_request_case(test_env(14, [])))
  +         ?_test(get_all_request_case(test_env(14, []))),
  +         ?_test(unassigned_to_assigned_case(test_env(15, [])))
           ]}.
   
   test_env(N, Valid) ->
  
positive.code:     {ok, [{2, 1, 1}]} = ?chunk_server:request_chunks(N, Has, 1),
      ?assertEqual({error, assigned}, ?chunk_server:request_chunks(N, Has, 1)).
  
  -endif.
  
negative.code: %% # Priority of pieces
  %% The chunk server uses the scarcity server to keep an updated
  %% list of pieces, ordered by priority, for two subsets of the
  %% pieces in a torrent. Every time these piece sets are update
  %% these piece lists need to be updated.
  %%
  %% ## Begun
  %% The chunk server is biased towards choosing pieces that we are
  