anchor.diff:  	ok ->
   	    ok;
   	Error ->
  +	    io:format("Test FAILED : ~p~n", [Error]),
   	    Error
       end.
   
  
positive.code: %% Note    : each test in the test function should print a single line
  %%           "test: TestedFunction/Arity - TestNo_For_TestedFunction"
  %%           + "~n". It's mainly used to make it easier to find the
  %%           failing sub test. 
  %% Note    : individual subtest in test() should preferably be 
  %%           independent of each other (test setup and execution 
  %%           order) - both for readability and if more advanced 
  %%           autotest systems are implemented
  %%--------------------------------------------------------------------
  test_module(Module) -> 
      io:format("~n"),
      io:format("testing module: ~p~n",[Module]),
      io:format("----------------------------------------------------------------------~n"),
  
negative.code: %% Descrip.: test a single module
  %% Returns : ok | ERROR
  %%
  %% The Module:test() function that must be supplied by the module
  %% Module:
  %%
  %% Function: test()
  