create tests inside modules / extensions

Hi Guys!

I got testing in my main-app running.

But the last hour I was not able to figure out how to setup and execute tests inside a module / extension.

The sections in the guide are not completed / having rare information regarding this topic.

Could someone please tell me / give example:

  • how to create tests inside modules / extensions?

  • how to execute the tests inside modules / extensions? (execute only module / extension tests)

  • how to execute all tests together? (main-app + extension / modules)

Thank you very much & best regards