feat: Set up comprehensive Python testing infrastructure

[llbbl]

Set up comprehensive Python testing infrastructure

Summary

This PR establishes a complete testing infrastructure for the LGT-Net project, providing developers with all the tools needed to write and run tests effectively.

Changes Made

Package Management

• ✅ Set up Poetry as the primary package manager
• ✅ Created pyproject.toml with project configuration and dependencies
• ✅ Migrated existing dependencies from requirements.txt (maintained for compatibility)

Testing Framework

• ✅ Added pytest as the main testing framework
• ✅ Configured pytest-cov for coverage reporting with 80% threshold
• ✅ Added pytest-mock for comprehensive mocking utilities
• ✅ Set up custom test markers: unit, integration, slow

Testing Configuration

• ✅ Comprehensive pytest configuration in pyproject.toml
• ✅ Coverage settings with HTML/XML report generation
• ✅ Test discovery patterns and strict configuration options
• ✅ Source code coverage for all main modules

Directory Structure

• ✅ Created proper testing hierarchy:
  • tests/ - Main test directory
  • tests/unit/ - Unit tests
  • tests/integration/ - Integration tests
  • tests/conftest.py - Shared fixtures and test utilities

Shared Testing Utilities

• ✅ Comprehensive fixture collection in conftest.py:
  • Temporary directories for file operations
  • Mock configuration objects
  • Sample data generators (images, tensors, layouts)
  • Automatic test environment setup
  • Graceful handling of missing dependencies (numpy/torch)

Development Tools

• ✅ Poetry script commands: poetry run test and poetry run tests
• ✅ Updated .gitignore with testing artifacts and development files
• ✅ Validation tests to ensure infrastructure works correctly

Running Tests

Installation

# Install all dependencies including testing tools
poetry install

Basic Usage

# Run all tests
poetry run test

# Run with verbose output
poetry run test -v

# Run specific test markers
poetry run test -m unit          # Only unit tests
poetry run test -m integration   # Only integration tests
poetry run test -m "not slow"    # Skip slow tests

Coverage Reports

# Generate coverage reports (already included in default test run)
poetry run test --cov-report=html  # HTML report in htmlcov/
poetry run test --cov-report=xml   # XML report for CI/CD

Infrastructure Validation

The setup includes validation tests that verify:

• ✅ pytest is working correctly
• ✅ Custom markers are functional
• ✅ Fixtures are properly configured
• ✅ Directory structure is correct
• ✅ Coverage reporting generates properly
• ✅ Both test and tests commands work

Notes for Developers

• Ready to use: Infrastructure is complete and validated
• Flexible fixtures: Handles missing dependencies gracefully
• CI/CD ready: XML coverage reports for automated pipelines
• Extensible: Easy to add new fixtures and test utilities
• Standards compliant: Follows Python testing best practices

The testing infrastructure is now ready for developers to start writing comprehensive tests for the LGT-Net codebase.

🤖 Generated with Claude Code