anchor.diff:  
   should_return_409_for_del_att_without_rev(Url) ->
       ?_test(begin
  -        {ok, Data} = file:read_file(?FIXTURE_TXT),
  -        Doc = {[
  -            {<<"_attachments">>, {[
  -                {<<"file.erl">>, {[
  -                    {<<"content_type">>, <<"text/plain">>},
  -                    {<<"data">>, base64:encode(Data)}
  -                ]}
  -            }]}}
  -        ]},
           {ok, RC, _, _} = test_request:put(
               Url ++ "/testdoc3",
               [?CONTENT_JSON, ?AUTH],
  -            jiffy:encode(Doc)
  +            jiffy:encode(attachment_doc())
           ),
           ?assertEqual(201, RC),
   
  
positive.code:       ),
        ?assertEqual(200, RC1)
      end).
  
negative.code:         ?assertEqual(409, RC1)
      end).
  
  
  should_return_200_for_del_att_with_rev(Url) ->
    ?_test(begin
        {ok, RC, _Headers, RespBody} = test_request:put(
            Url ++ "/testdoc4",
            [?CONTENT_JSON, ?AUTH],
            jiffy:encode(attachment_doc())
        ),
        ?assertEqual(201, RC),
  
  