pytest

name	pytest
description	Python testing mastery with pytest, fixtures, parametrize, mocking, and coverage. Use when user asks to "write tests", "add pytest fixtures", "mock a function", "parametrize tests", "run coverage", "debug failing test", "set up conftest", or any Python testing tasks.

pytest

Complete Python testing toolkit with pytest.

Running Tests

# Run all tests
pytest

# Run specific file/directory
pytest tests/test_api.py
pytest tests/

# Run specific test
pytest tests/test_api.py::test_login
pytest tests/test_api.py::TestUserClass::test_create

# Verbose output
pytest -v
pytest -vv  # Extra verbose

# Stop on first failure
pytest -x

# Run last failed
pytest --lf

# Run failed first, then rest
pytest --ff

# Show print output
pytest -s

# Parallel (requires pytest-xdist)
pytest -n auto
pytest -n 4

Fixtures

import pytest

# Basic fixture
@pytest.fixture
def user():
    return {"name": "Alice", "email": "[e-mail]"}

# Fixture with teardown
@pytest.fixture
def db_connection():
    conn = create_connection()
     conn
    conn.close()



 ():
    State.reset()
    
    State.cleanup()



 ():
     load_heavy_thing()





 ():
     create_engine(request.param)


 ():
     user[] ==