pytest-masterylisted
Install: claude install-skill aiskillstore/marketplace
# pytest Testing with uv
## Quick Reference
```bash
# Run all tests
uv run pytest
# Run with verbose output
uv run pytest -v
# Run specific file
uv run pytest tests/test_example.py
# Run specific test function
uv run pytest tests/test_example.py::test_function_name
# Run tests matching pattern
uv run pytest -k "pattern"
# Run with coverage
uv run pytest --cov=src --cov-report=html
```
## Installation
```bash
# Add pytest as dev dependency
uv add --dev pytest
# Add coverage support
uv add --dev pytest-cov
# Add async support (for FastAPI)
uv add --dev pytest-asyncio httpx
```
## Test Discovery
pytest automatically discovers tests following these conventions:
- Files: `test_*.py` or `*_test.py`
- Functions: `test_*`
- Classes: `Test*` (no `__init__` method)
- Methods: `test_*` inside `Test*` classes
Standard project structure:
```
project/
├── src/
│ └── myapp/
├── tests/
│ ├── __init__.py
│ ├── conftest.py # Shared fixtures
│ ├── test_unit.py
│ └── integration/
│ └── test_api.py
└── pyproject.toml
```
## Fixtures
Fixtures provide reusable test setup/teardown:
```python
import pytest
@pytest.fixture
def sample_user():
return {"id": 1, "name": "Test User"}
@pytest.fixture
def db_connection():
conn = create_connection()
yield conn # Test runs here
conn.close() # Teardown
def test_user_name(sample_user):
assert sample_user["name"] == "Test User"
```
### Fixture Scopes
```python
@pytest.fixture(scope="function") # D