Fix resource warnings in tests

[codecov[bot]]

Codecov Report

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

Project coverage is 88.59%. Comparing base (fb15fa6) to head (36f311a).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #638 +/- ## ======================================= Coverage 88.59% 88.59% ======================================= Files 42 42 Lines 4575 4576 +1 ======================================= + Hits 4053 4054 +1 Misses 522 522 ```

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