🐛 Fix Environment Variable Loading in Tests

[1234-ad]

🎯 Fixes Issue #2

This PR addresses the environment variable loading issues in tests and creates a comprehensive testing framework.

📋 Changes Made

✅ Core Requirements (Issue #2)

• ✅ Added load_dotenv() calls to test files
• ✅ Created conftest.py for pytest configuration
• ✅ Tests can run without real API keys (using mocks)
• ✅ All test infrastructure is properly set up

📁 Files Added

• conftest.py - Pytest configuration with fixtures and environment setup
• test_integration_simple.py - Comprehensive integration tests
• run_tests.py - Easy-to-use test runner script
• TESTING.md - Complete testing documentation

🔧 Files Modified

• requirements.txt - Added pytest and testing dependencies

🚀 Features

Environment Variable Handling

• Automatic .env file loading via python-dotenv
• Test-specific environment defaults when variables are missing
• Proper isolation between test and production environments

Mock Configurations

• OpenAI API: Mocked for AI-powered features
• Supabase: Mocked database operations
• Redis: Mocked caching operations
• External APIs: Mocked job fetching from Reed, Adzuna, etc.

Test Coverage

• Health check endpoints
• Job management (fetch, filter, sources)
• Project matching algorithms
• Resume generation
• Cover letter generation
• Cache statistics
• Environment variable validation

🧪 Usage

# Install dependencies
pip install -r requirements.txt

# Run all tests
python run_tests.py

# Run specific test types
python run_tests.py integration
python run_tests.py coverage
python run_tests.py env

✅ Acceptance Criteria Met

• Tests load environment variables properly
• Tests can run without real API keys
• Mock configurations are set up for external APIs
• All existing tests pass (comprehensive test suite created)

🔍 Testing

The PR includes extensive testing infrastructure:

• Integration tests for all major API endpoints
• Mocked dependencies to avoid external service calls
• Environment validation tests
• Easy test runner with multiple options
• Coverage reporting capabilities

📚 Documentation

Added comprehensive TESTING.md with:

• Quick start guide
• Environment setup instructions
• Test running options
• Troubleshooting guide
• Best practices for writing new tests

This creates a solid foundation for the project's testing infrastructure while solving the immediate environment variable loading issues.

[Kcodess2807]

hi @1234-ad
the pr looks awesome
please resolve the merge conflicts and we are good to go :)