Add more test cases to the system-level tests suite

[VeraChristina]

Is your feature request related to a problem? Please describe.

The basic system-level test suite added in PR #38 only has a few basic test cases.

Describe the solution you'd like

Gather requirements / coordinate a more comprehensive collection of tests for the various tasks (dataset creation, training, etc.)

Describe alternatives you've considered

No response

Additional context

No response

Organisation

No response

[github-actions]

This issue has been marked as inactive due to inactivity. It will be closed if no further activity occurs in the next 10 days.

[VeraChristina]

In addition to different use cases, do we need to cover different configurable options as in the integration tests? Compare for example the question here: #98 (review)