Optimize tests a little

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (a287997) 55.92% compared to head (3ac53dc) 55.95%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #67 +/- ## ========================================== + Coverage 55.92% 55.95% +0.02% ========================================== Files 31 31 Lines 4540 4543 +3 ========================================== + Hits 2539 2542 +3 Misses 2001 2001 ``` | [Flag](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/67/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.) | Coverage Δ | | |---|---|---| | [ubuntu-latest](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/67/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.) | `56.87% <100.00%> (+0.02%)` | :arrow_up: | | [windows-latest](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/67/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.) | `55.10% <100.00%> (+0.03%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.) | Coverage Δ | | |---|---|---| | [src/object/attributes.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL29iamVjdC9hdHRyaWJ1dGVzLnJz) | `100.00% <ø> (ø)` | | | [src/object/mod.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL29iamVjdC9tb2QucnM=) | `22.65% <100.00%> (+0.50%)` | :arrow_up: | | [src/object/types.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL29iamVjdC90eXBlcy5ycw==) | `100.00% <ø> (ø)` | | | [src/topology/mod.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL3RvcG9sb2d5L21vZC5ycw==) | `98.23% <ø> (ø)` | |

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