1. Within a Github action that runs whenever code is pushed, Because by doing this, the testers will not need to manually test codes, and the test results can be seen by all members of the group.
2. no
3. No, since the output of the messeging feature can be anything and the scale can be huge, so there's not a single expected output, and since unit testing is great with debugging on a small scale without any moving parts.Therefore the messeging feature should not be unit tested.
Yes. Since the output of the "max message length" function is a digit. Unit testing would be a great fit for this feature.