Add tests

[codecov[bot]]

Codecov Report

Base: 71.08% // Head: 100.00% // Increases project coverage by +28.91% :tada:

Coverage data is based on head (62f0c5c) compared to base (2ee3a80). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #14 +/- ## ============================================ + Coverage 71.08% 100.00% +28.91% ============================================ Files 8 8 Lines 287 270 -17 ============================================ + Hits 204 270 +66 + Misses 83 0 -83 ``` | [Impacted Files](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/14?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio) | Coverage Δ | | |---|---|---| | [lib/src/accessibility\_issue.dart](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/14/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio#diff-bGliL3NyYy9hY2Nlc3NpYmlsaXR5X2lzc3VlLmRhcnQ=) | `100.00% <ø> (+16.66%)` | :arrow_up: | | [lib/src/checkers/checker\_base.dart](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/14/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio#diff-bGliL3NyYy9jaGVja2Vycy9jaGVja2VyX2Jhc2UuZGFydA==) | `100.00% <ø> (+38.09%)` | :arrow_up: | | [lib/src/checkers/flex\_overflow\_checker.dart](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/14/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio#diff-bGliL3NyYy9jaGVja2Vycy9mbGV4X292ZXJmbG93X2NoZWNrZXIuZGFydA==) | `100.00% <ø> (+100.00%)` | :arrow_up: | | [lib/src/accessibility\_tools.dart](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/14/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio#diff-bGliL3NyYy9hY2Nlc3NpYmlsaXR5X3Rvb2xzLmRhcnQ=) | `100.00% <100.00%> (+9.25%)` | :arrow_up: | | [lib/src/checker\_manager.dart](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/14/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio#diff-bGliL3NyYy9jaGVja2VyX21hbmFnZXIuZGFydA==) | `100.00% <100.00%> (ø)` | | | [lib/src/checkers/minimum\_tap\_area\_checker.dart](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/14/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio#diff-bGliL3NyYy9jaGVja2Vycy9taW5pbXVtX3RhcF9hcmVhX2NoZWNrZXIuZGFydA==) | `100.00% <0.00%> (+35.71%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio)

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