PyTest installation (pip install pytest) - Framework Patterns

Framework Mode - PyTest installation (pip install pytest)

Folder Structure

project-root/
├── tests/
│   ├── test_example.py
│   └── __init__.py
├── src/
│   └── app_code.py
├── conftest.py
├── pytest.ini
└── requirements.txt
    

This is a simple PyTest project structure. tests/ holds test files. conftest.py contains shared fixtures. pytest.ini configures PyTest settings.

Test Framework Layers

• Test Layer: Test files inside tests/ folder, e.g., test_example.py with test functions.
• Fixtures Layer: conftest.py holds reusable setup/teardown code called fixtures.
• Application Code Layer: Source code under src/ folder, separated from tests.
• Configuration Layer: pytest.ini or pyproject.toml for PyTest options.
• Dependencies Layer: requirements.txt lists packages like PyTest.

Configuration Patterns

Use pytest.ini to configure PyTest options like test paths and markers:

[pytest]
testpaths = tests
markers =
    smoke: quick smoke tests
    regression: full regression suite
    

Manage environments and credentials using environment variables or separate config files loaded in fixtures.

Example: Use os.environ in conftest.py to read sensitive data safely.

Test Reporting and CI/CD Integration

• Use PyTest built-in options like --junitxml=report.xml to generate XML reports.
• Integrate with CI/CD tools (GitHub Actions, Jenkins) to run tests automatically on code changes.
• Use plugins like pytest-html for readable HTML reports.
• Example GitHub Actions step to run tests:

  - name: Run PyTest
    run: |
      pip install -r requirements.txt
      pytest --junitxml=report.xml
          

Best Practices

• Keep tests and source code separate for clarity and maintainability.
• Use conftest.py for shared fixtures to avoid duplication.
• Use pytest.ini to centralize test configuration and markers.
• Use virtual environments to isolate dependencies and avoid conflicts.
• Write simple, independent test functions that can run in any order.

Self Check

Where in this folder structure would you add a new fixture to set up a database connection for tests?

Key Result

Organize PyTest projects with separate tests, fixtures, config, and use virtual environments for clean dependency management.