Reduce allocations in tests

[codecov[bot]]

Codecov Report

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

Comparison is base (f42003e) 88.23% compared to head (1fbfdae) 88.12%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #179 +/- ## ========================================== - Coverage 88.23% 88.12% -0.12% ========================================== Files 11 11 Lines 1190 1204 +14 ========================================== + Hits 1050 1061 +11 - Misses 140 143 +3 ```

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