feat: add some more tests

[codecov[bot]]

Codecov Report

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

Project coverage is 95.70%. Comparing base (dff4620) to head (190b162). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #217 +/- ## ========================================== + Coverage 95.40% 95.70% +0.29% ========================================== Files 6 6 Lines 631 675 +44 ========================================== + Hits 602 646 +44 Misses 29 29 ```

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