Increase Test Coverage

[MaximilianSoerenPollak]

What

We should increase our Test Coverage in some areas where it is currently lacking.
We have some scripts / files that have a rather low test coverage (or are not tested at all).
This should be fixed as best as possible

Acceptance Criteria (DoD)

Better test coverage than currently:
No more 'red' coverages in any files or folders

How

Write more tests.

[MaximilianSoerenPollak]

More specifically some info:

Score_metamodel:

Score_metamodel/checks:

THere also is some in souce_code_linker: