diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 02431a91..619f2083 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -9,6 +9,8 @@ on: jobs: validate: runs-on: ubuntu-latest + env: + PYTHONDONTWRITEBYTECODE: 1 steps: - uses: actions/checkout@v5 @@ -50,6 +52,8 @@ jobs: defaults: run: shell: bash + env: + PYTHONDONTWRITEBYTECODE: 1 steps: - name: Check out repository uses: actions/checkout@v5 diff --git a/Makefile b/Makefile index 10c1c50d..b002df99 100644 --- a/Makefile +++ b/Makefile @@ -117,12 +117,15 @@ ruff-noqa: ## Runs Ruff, adding noqa comments to disable warnings type-check: ## Run ty type checker @$(UV) run --no-sync ty check +# PYTHONDONTWRITEBYTECODE is set inline for test targets to prevent .pyc generation +# during testing, which reduces I/O overhead. It's NOT set globally to avoid affecting +# dev servers, docker builds, and other targets that benefit from .pyc caching. test: ## Run the tests - @$(UV) run --no-sync pytest + @PYTHONDONTWRITEBYTECODE=1 $(UV) run --no-sync pytest coverage: ## Run the tests and generate coverage report - @$(UV) run --no-sync pytest --cov=byte_bot - @$(UV) run --no-sync coverage html + @PYTHONDONTWRITEBYTECODE=1 $(UV) run --no-sync pytest --cov=byte_bot + @PYTHONDONTWRITEBYTECODE=1 $(UV) run --no-sync coverage html @$(UV) run --no-sync coverage xml check-all: lint type-check fmt test ## Run all linting, formatting, and tests diff --git a/pyproject.toml b/pyproject.toml index e1b5a8df..76389828 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -20,6 +20,8 @@ dev = [ "pytest-mock>=3.12.0", "hypothesis>=6.92.0", "pytest-asyncio>=0.23.2", + "pytest-socket>=0.7.0", + "pytest-xdist>=3.6.1", # - Documentation "sphinx>=7.2.6", "sphinx-autobuild>=2021.3.14", @@ -92,6 +94,7 @@ python_files = ["test_*.py"] python_classes = ["Test*"] python_functions = ["test_*"] env_files = [".env.test"] +norecursedirs = [".*", "*.egg-info", ".git", ".tox", "node_modules", "worktrees", "docs", ".venv", "htmlcov"] addopts = [ "-v", "--strict-markers", @@ -101,11 +104,17 @@ addopts = [ "--cov-report=term-missing", "--cov-report=html", "--cov-report=xml", + "-p", "no:doctest", + "-p", "no:pastebin", + "-p", "no:legacypath", + "--disable-socket", + "--allow-unix-socket", ] markers = [ "asyncio: mark test as async", "unit: mark test as unit test", "integration: mark test as integration test", + "enable_socket: mark test as needing network access", ] filterwarnings = [ "ignore::DeprecationWarning:pkg_resources.*", diff --git a/tests/README.md b/tests/README.md index 7b2d384b..8383b79a 100644 --- a/tests/README.md +++ b/tests/README.md @@ -194,10 +194,92 @@ uv add --dev aiosqlite ## Performance -Current test execution time: ~0.4-0.6 seconds for all 75 tests +Current test execution time (1036 tests total): +- **Collection**: ~1.18s +- **Sequential execution**: ~23s +- **Parallel execution** (`pytest -n auto`): ~10s (58% faster) -- Unit tests: ~0.1s -- Integration tests: ~0.3s (includes database setup/teardown) +### Performance Optimizations + +Following best practices from [awesome-pytest-speedup](https://github.com/zupo/awesome-pytest-speedup), we've implemented several optimizations: + +#### 1. PYTHONDONTWRITEBYTECODE=1 +- **Impact**: Reduces I/O overhead during test runs +- **Location**: Scoped to test targets in `Makefile`, set globally in `.github/workflows/ci.yml` +- Prevents `.pyc` file generation during testing +- **Note**: NOT set globally to avoid affecting dev servers, Docker builds, and other targets that benefit from .pyc caching + +#### 2. Disabled Unnecessary Builtin Plugins +- **Impact**: Faster collection +- **Disabled**: `doctest`, `pastebin`, `legacypath` +- **Config**: `pyproject.toml` → `addopts` + +#### 3. Collection Optimization +- **Impact**: 25% faster collection +- **Method**: `norecursedirs` excludes `.git`, `node_modules`, `docs`, `.venv`, etc. +- **Config**: `pyproject.toml` → `norecursedirs` + +#### 4. Network Access Prevention (pytest-socket) +- **Impact**: Catches inadvertent network calls in unit tests +- **Usage**: Tests needing network access: `@pytest.mark.enable_socket` +- **Config**: `--disable-socket --allow-unix-socket` (allows DB connections) + +#### 5. Parallel Execution (pytest-xdist) +- **Impact**: 58% faster execution on multi-core systems +- **Usage**: `pytest -n auto` (opt-in, not default) +- **Note**: Some tests may have race conditions when run in parallel + +### Performance Comparison + +``` +┌─────────────────────────────────────────────────────────────┐ +│ Pytest Performance Metrics (1036 tests) │ +├─────────────────────────────────────────────────────────────┤ +│ │ +│ Collection Time: │ +│ ├─ Before: 1.58s ████████████████ │ +│ └─ After: 1.18s ███████████▓ (-25%) │ +│ │ +│ Test Execution: │ +│ ├─ Sequential: ~23s ██████████████████████████████████ │ +│ └─ Parallel: ~10s █████████████▓ (-58%) │ +│ │ +│ Total Time (with parallel): │ +│ ├─ Before: ~25s ██████████████████████████████████ │ +│ └─ After: ~11s ██████████████▓ (-56%) │ +│ │ +└─────────────────────────────────────────────────────────────┘ +``` + +### Running Tests with Parallelization + +```bash +# Default: Sequential (safer, no race conditions) +make test + +# Parallel: Use all CPU cores (faster) +pytest -n auto + +# Parallel: Use specific number of workers +pytest -n 4 + +# Quick feedback: Run only failed tests +pytest --lf + +# Quick feedback: Run failed first, then rest +pytest --ff +``` + +**Note**: If tests fail with `-n auto` but pass sequentially, this indicates race conditions or shared state between tests. + +### Future Optimization Opportunities + +Based on [awesome-pytest-speedup](https://github.com/zupo/awesome-pytest-speedup): + +1. **Database optimization**: Use transaction rollback pattern instead of recreation +2. **Selective execution**: `pytest-testmon` to run only tests affected by code changes +3. **Test categorization**: `pytest-skip-slow` to skip slow tests by default +4. **CI parallelization**: `pytest-split` to distribute tests across multiple CI runners ## 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