[Sparths]

• Implement unit and integration tests for backend API endpoints in test_endpoints.py.
• Create a conftest.py file to define pytest markers for better test categorization.
• Develop component tests for various React components in components.test.js.
• Add tests for custom hooks in hooks.test.js to ensure correct functionality.
• Write service tests in services.test.js to validate API interactions and error handling.
• Set up testing environment configurations in setup.js and vitest.config.js.
• Create utility functions in test-utils.js for consistent test rendering and mock data.
• Establish pytest configuration in pytest.ini for streamlined test discovery.
• Implement a shell script run-tests.sh to facilitate running tests for both backend and frontend.

Description

Fixes # (issue number)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• I have read the CONTRIBUTING.md document.
• I have performed a self-review of my own code.
• If I modified the React frontend, I ran npm run lint and fixed any errors.
• I have added/updated comments in my code, particularly in hard-to-understand areas.
• My changes generate no new warnings in the terminal.