fix standalone

platformio.ini

@@ -218,6 +218,7 @@ lib_deps =
 ;  to run use `platformio run -e native-test -t exec`. All tests should PASS.
 ;  to update the test results, compile with -DEMSESP_UNITY_CREATE by uncommenting the line below
 ;  then re-run and capture the output between "START - CUT HERE" and "END - CUT HERE" into the test_api.h file
+;  tip: use https://jsondiff.com/ to compare the expected and actual responses.
 [env:native-test]
 platform = native
 test_build_src = true