template-test-creation

# Test creation ## Natural invoke - "Add tests for projects/templates/template_code_project/src/optimizer.py" - "Raise coverage on infrastructure/validation to pass 60% gate" - "Test this CLI with subprocess, no mocks" ## Inputs to confirm - **Code under test** — module/path. - **Layer** — infrastructure (60%) vs project (90%). ## Workflow 1. **No mocks** — never `unittest.mock`, `MagicMock`, or patch the unit under test. Use real computation, `tmp_path`, local HTTP servers, subprocess for CLIs. 2. **Structure** — `test_*.py` mirroring src modules; parametrize variants; fixed RNG seeds. 3. **Coverage** — run pytest-cov; meet floor for layer. 4. **Integration** — wire into `projects/<n>/tests/` or `tests/infra_tests/` following existing layout. ## Deliverables - Test file(s) with passing run and coverage report excerpt - Note any opt-in markers (`requires_latex`, `requires_ollama`) ## Verification commands ```bash uv run pytest path/to/test_file.py -v uv run pytest projects/<project>/tests/ --cov=projects/<project>/src --cov-fail-under=90 uv run pytest tests/infra_tests/path/ --cov=infrastructure --cov-fail-under=60 ``` ## When NOT to use - **Implement feature + tests together** → [feature-addition](../feature-addition/SKILL.md) or [code-development](../code-development/SKILL.md) ## References - [`docs/rules/testing_standards.md`](../../rules/testing_standards.md) - Patterns: [references/patterns.md](references/patterns.md)