Update the jump detection unittest to check

[WilliamJamieson]

In PR #227 the unit tests for jump detection were broken slightly in the sense that they did not actually attempt to account for if jumps were detected or not. This PR attempts to resolve these issues in the testing so that now the testing does account for all jumps being detected (there is one exception to this).

Checklist

• [ ] added entry in CHANGES.rst (either in Bug Fixes or Changes to API)
• [ ] updated relevant tests
• [ ] updated relevant documentation
• [ ] updated relevant milestone(s)
• [ ] added relevant label(s)

[codecov[bot]]

Codecov Report

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

Comparison is base (fd2d6ce) 85.98% compared to head (9c6ebbf) 86.02%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #231 +/- ## ========================================== + Coverage 85.98% 86.02% +0.04% ========================================== Files 35 35 Lines 6542 6533 -9 ========================================== - Hits 5625 5620 -5 + Misses 917 913 -4 ```

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