Testing multiple exceptions in PyTest - Framework Patterns

Framework Mode - Testing multiple exceptions

Folder Structure

tests/
├── test_example.py
├── conftest.py
utilities/
├── helpers.py
pytest.ini
requirements.txt

Test Framework Layers

• Tests: Contains test files like test_example.py where multiple exceptions are tested using pytest.
• Utilities: Helper functions or classes used by tests, e.g., helpers.py.
• Fixtures & Config: conftest.py for shared fixtures and setup/teardown logic.
• Configuration: pytest.ini for pytest settings.

Configuration Patterns

• Use pytest.ini to configure test markers and default options.
• Manage environment variables or test data in conftest.py fixtures.
• Use parametrization to test multiple exceptions in one test function.
• Keep sensitive data out of code; use environment variables or config files.

Test Reporting and CI/CD Integration

• Use pytest built-in reports with --tb=short for concise tracebacks.
• Integrate with CI tools like GitHub Actions or Jenkins to run tests on push.
• Use plugins like pytest-html for HTML reports.
• Fail tests clearly when unexpected exceptions occur.

Best Practices for Testing Multiple Exceptions

1. Use pytest.raises() context manager to assert exceptions.
2. Parametrize tests to check multiple exceptions cleanly.
3. Keep tests small and focused on one behavior per test.
4. Use descriptive test names to clarify which exception is tested.
5. Handle setup and teardown with fixtures to avoid repetition.

Self Check

Where would you add a new test function that checks if a function raises ValueError and TypeError in this framework structure?

Key Result

Use pytest with parametrized tests and pytest.raises() to test multiple exceptions cleanly.