Test basic topology functionality

[codecov[bot]]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (53db639) 47.24% compared to head (700d3ab) 50.23%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #51 +/- ## ========================================== + Coverage 47.24% 50.23% +2.99% ========================================== Files 30 30 Lines 4312 4332 +20 ========================================== + Hits 2037 2176 +139 + Misses 2275 2156 -119 ``` | [Flag](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51/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/51/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.) | `50.41% <80.00%> (+3.00%)` | :arrow_up: | | [windows-latest](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.) | `50.13% <80.00%> (+3.38%)` | :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/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.) | Coverage Δ | | |---|---|---| | [hwlocality-sys/src/lib.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-aHdsb2NhbGl0eS1zeXMvc3JjL2xpYi5ycw==) | `100.00% <ø> (ø)` | | | [src/bitmap.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL2JpdG1hcC5ycw==) | `100.00% <100.00%> (ø)` | | | [src/ffi/int.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL2ZmaS9pbnQucnM=) | `100.00% <ø> (ø)` | | | [src/lib.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL2xpYi5ycw==) | `100.00% <ø> (ø)` | | | [src/topology/builder.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL3RvcG9sb2d5L2J1aWxkZXIucnM=) | `79.32% <ø> (ø)` | | | [src/cpu/cpuset.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL2NwdS9jcHVzZXQucnM=) | `12.50% <0.00%> (+8.92%)` | :arrow_up: | | [src/object/mod.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL29iamVjdC9tb2QucnM=) | `19.08% <0.00%> (+7.35%)` | :arrow_up: | | [src/topology/mod.rs](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.#diff-c3JjL3RvcG9sb2d5L21vZC5ycw==) | `89.87% <76.00%> (+49.02%)` | :arrow_up: | ... and [3 files with indirect coverage changes](https://app.codecov.io/gh/HadrienG2/hwlocality/pull/51/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Hadrien+G.)

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