pytest-coverage
pytestをカバレッジレポート付きで実行し、未テストのコード行を特定して排除します。cov_annotate/ディレクトリに注釈付きソースファイルを生成し、!マーカーで未カバーの行を示します。--cov=module_nameによるモジュール固有のカバレッジチェックと、特定のテストファイルに対する対象テスト実行をサポートします。ワークフロー：カバレッジを実行し、注釈付きファイルで未カバーの行を確認し、ギャップを埋めるテストを作成し、100%カバレッジ達成まで繰り返します。
npx skills add https://github.com/github/awesome-copilot --skill pytest-coverageThe goal is for the tests to cover all lines of code.
Generate a coverage report with:
pytest --cov --cov-report=annotate:cov_annotate
If you are checking for coverage of a specific module, you can specify it like this:
pytest --cov=your_module_name --cov-report=annotate:cov_annotate
You can also specify specific tests to run, for example:
pytest tests/test_your_module.py --cov=your_module_name --cov-report=annotate:cov_annotate
Open the cov_annotate directory to view the annotated source code. There will be one file per source file. If a file has 100% source coverage, it means all lines are covered by tests, so you do not need to open the file.
For each file that has less than 100% test coverage, find the matching file in cov_annotate and review the file.
If a line starts with a ! (exclamation mark), it means that the line is not covered by tests. Add tests to cover the missing lines.
Keep running the tests and improving coverage until all lines are covered.