Burghard: There is idealism and there is reality. The reality is that the Fabrik project has developed organically from a time before Github's automated testing and code quality assurance, and it has never generated sufficient income to allow for the development of Coding Standards or Automated Testing.
Looking at testing It would be great if there were a standardised Joomla/Fabrik installation that had examples of every part of Fabrik and which could be used for testing. Hugh might have something like that, but at the moment it is not shared.
But wouldn't it be great if someone were to create a test environment that we can install ourselves - or even better still create the infrastructure framework in the Github repo for automated testing even if it were only for Elements.