feat: Add comprehensive Python testing infrastructure

[llbbl]

Add Complete Python Testing Infrastructure

Summary

This PR establishes a comprehensive testing infrastructure for the Apfell project, providing developers with all the necessary tools and configurations to write and run tests effectively.

Changes Made

• Package Management: Set up Poetry as the package manager with pyproject.toml configuration
• Testing Dependencies: Added pytest ecosystem packages:
  • pytest (main testing framework)
  • pytest-cov (coverage reporting)
  • pytest-mock (mocking utilities)
• Project Structure: Created organized test directory structure:
  • tests/ (main test directory)
  • tests/unit/ (unit tests)
  • tests/integration/ (integration tests)
  • Each directory includes proper __init__.py files
• Configuration: Comprehensive pytest and coverage configuration in pyproject.toml:
  • Test discovery patterns
  • Coverage reporting (HTML, XML formats)
  • 80% coverage threshold
  • Custom markers (unit, integration, slow)
  • Strict configuration for reliability
• Shared Fixtures: Created tests/conftest.py with reusable fixtures:
  • Temporary directory management
  • Mock objects for agents, tasks, callbacks
  • Sample configuration data
  • File system mocking
  • Environment variable setup
• Validation: Added infrastructure validation tests to verify setup
• Dependencies: Migrated existing dependencies from chainbreaker's requirements.txt
• Git Configuration: Updated .gitignore with testing-related exclusions

Testing Infrastructure Features

Running Tests

# Run all tests
poetry run pytest

# Run with coverage
poetry run pytest --cov=Payload_Type

# Run specific test types
poetry run pytest -m unit
poetry run pytest -m integration
poetry run pytest -m slow

# Run with verbose output
poetry run pytest -v

Coverage Reporting

• HTML Report: Generated in htmlcov/ directory
• XML Report: Generated as coverage.xml
• Terminal Report: Shows missing lines during test runs
• Threshold: 80% coverage requirement (configurable)

Available Fixtures

The conftest.py provides comprehensive fixtures for testing:

• temp_dir: Temporary directory management
• sample_config: Standard configuration dictionary
• mock_agent, mock_task, mock_callback: Mock Mythic objects
• mock_file_system: File system testing utilities
• mock_environment_vars: Environment variable setup

Custom Markers

• @pytest.mark.unit: Mark unit tests
• @pytest.mark.integration: Mark integration tests
• @pytest.mark.slow: Mark slow-running tests

Validation

The infrastructure has been validated with comprehensive tests in test_infrastructure_validation.py that verify:

• ✅ Pytest functionality and configuration
• ✅ All fixtures are working properly
• ✅ Coverage reporting is configured correctly
• ✅ Project structure is in place
• ✅ Package management is functional

Next Steps

Developers can now:

1. Install dependencies: poetry install
2. Start writing tests: Add test files to tests/unit/ or tests/integration/
3. Run tests: poetry run pytest
4. Check coverage: View reports in htmlcov/index.html
5. Use fixtures: Import and use shared fixtures from conftest.py

Configuration Notes

• Poetry lock files are tracked in git (as recommended)
• Coverage excludes common directories (venv, node_modules, etc.)
• Pytest is configured with strict settings for reliability
• All testing artifacts are properly gitignored

This infrastructure provides a solid foundation for comprehensive testing of the Apfell payload system.