anchor.diff:      ?line true = (lib_version() =/= undefined),
       ?line [{load,1,1,101},{lib_version,1,2,102}] = call_history(),
       ?line [] = call_history(),
  -    ?line [?MODULE] = erlang:system_info(taints),
  +    ?line true = lists:member(?MODULE, erlang:system_info(taints)),
       ok.
   
   reload(doc) -> ["Test reload callback in nif lib"];
  
positive.code:     ?line true = erlang:purge_module(nif_mod),
      ?line [{unload,2,4,204}] = nif_mod_call_history(),    
  
      ?line [?MODULE, nif_mod] = erlang:system_info(taints),    
      ?line verify_tmpmem(TmpMem),
      ok.
  
  
negative.code:     ?line true = erlang:purge_module(nif_mod),
      ?line [{unload,1,3,103}] = nif_mod_call_history(),    
  
      ?line true = lists:member(?MODULE, erlang:system_info(taints)),
      ?line true = lists:member(nif_mod, erlang:system_info(taints)),
      ?line verify_tmpmem(TmpMem),
      ok.
  
  