[PROPOSAL] Add tests for groovy scripts in vars folder

[pranav767]

Is your feature request related to a problem? Please describe

Currently from build.gradle we can see that the tests are only covering 'src/jenkins', 'src/gradlecheck' . I can see multiple groovy scripts inside vars directory which are not yet covered in the unit tests.
Correct me if I am wrong, but I feel this scripts are as important as the others in the src directory.
I do see there are tests written in jobs directory,but these seem to be more like integration/regression tests than unit tests

Describe the solution you'd like

We could start writing tests for each groovy files in vars directory, and add the sourcefile in build.gradle , while maintaining the record of which groovy scripts are covered and which needs to be covered yet.

Describe alternatives you've considered

No response

Additional context

No response