pytest

When to Use

Triggers: When writing Python tests, using pytest, mocking dependencies, or testing async code.

Load when: writing Python tests with pytest, setting up fixtures, mocking external dependencies, or testing async functions.

Critical Patterns

Pattern 1: Organized test classes

import pytest

class TestUserService:
    def test_create_user_successfully(self, user_service, valid_user_data):
        result = user_service.create(valid_user_data)
        assert result.id is not None
        assert result.name == valid_user_data["name"]