anchor.diff:                              after
                                   0 -> no_message
                               end,
  -                        ?ct_fail("expected message ~s but got \"~w\"", [??MsgPattern, ActualMessage])
  +                        ?ct_fail("expected message ~s but got \"~w\"~n", [??MsgPattern, ActualMessage])
                   end
           end()).
   -define(expect_message(MsgPattern), ?expect_message_timeout(MsgPattern, 1000)).
  
positive.code:                                             after
                                                  0 -> no_message
                                              end,
                                          ?ct_fail("expected message ~s but got \"~w\"", [??MsgPattern, ActualMessage])
                                  end
                              MsgPattern -> ok
                          after
  
negative.code:         fun() ->
                  receive
                      ActualMessage ->
                          ?ct_fail("expected no message but got \"~w\"~n", [ActualMessage])
                  after
                      Timeout -> ok
                  end
  