Adding missing unit tests

[afroch]

Summary

This pull request introduces the following changes

• Adding a few missing unit tests

Conformity

• [X] Changelog entry
• [X] Documentation

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.01%. Comparing base (e8de544) to head (20d6f15). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #295 +/- ## ========================================== + Coverage 97.86% 98.01% +0.15% ========================================== Files 51 51 Lines 5142 5189 +47 ========================================== + Hits 5032 5086 +54 + Misses 110 103 -7 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[samvanstroud]

Thanks @afroch!