Increase test coverage for jeeves

[ciecierski]

I would like to start a discussion on how we can add more tests to jeeves. There are already some simple tests implemented in tests folder, however they don't cover much of the code base. Tests can be helpful both for developer and reviewer. (for an example as a reviewer I would like to see the resulting report page in the CI and check how it differ versus before change).
My first idea is to look how tests are implemented in python-jenkins: https://opendev.org/jjb/python-jenkins/src/branch/master/tests and re-use some of them and add more jeeves specific tests. Any idea is more than welcome.

[nathan-weinberg]

Very much in favor of this!

[damani42]

Yes it will be very great.

[EliadCohen]

+1