This file extends common/testing.md with Python specific content.

Use pytest as the testing framework.

pytest --cov=src --cov-report=term-missing

Use pytest.mark for test categorization:

import pytest

@pytest.mark.unit
def test_calculate_total():
    ...

@pytest.mark.integration
def test_database_connection():
    ...

See skill: python-testing for detailed pytest patterns and fixtures.