ISSUE #1 Missing Integration Tests Implementation

[Jeck0v]

Problem:

• Only 10 unit tests scattered across the codebase
• No integration tests for the main CLI commands
• No end-to-end tests for Docker Compose generation
• No validation against real-world complex .ath files

It would be necessary to implement something like this:

tests/
├── integration/
│   ├── cli_commands_test.rs             # Test all CLI commands
│   ├── docker_compose_generation_test.rs # Full generation test
│   ├── error_handling_test.rs           # Error case testing
│   └── boilerplate_generation_test.rs   # Init command tests
├── fixtures/
│   ├── valid_simple.ath
│   ├── valid_complex_microservices.ath
│   ├── invalid_syntax.ath
│   └── circular_dependencies.ath
└── snapshots/                           # Expected outputs
    ├── simple_compose.yml
    └── complex_microservices.yml

Focus on:

• CLI tests using assert_cmd or all commands
• Generation tests with YAML output validation
• Error handling tests with proper messages
• Coverage > 80% on critical code paths
• CI/CD pipeline runs automated tests

[Jeck0v]

In the end, it should look something like this. Snapshots are a bit too complex and cumbersome to set up, so I've chosen a simpler, lighter, and more readable alternative.

• Structural tests verify logic and behavior
• Functional tests check that features work correctly
• Lightweight approach easy to maintain and fast to run
• No heavy snapshot tests that break on cosmetic changes

Test Structure

tests/
├── integration/
│   ├── cli_commands_test.rs             # Test all CLI commands
│   ├── docker_compose_generation_test.rs # Full generation test
│   ├── error_handling_test.rs           # Error case testing
│   ├── boilerplate_generation_test.rs   # Init command tests
│   └── structural/                      # Organized structural tests
│       ├── mod.rs                       # Common utilities and module declarations
│       ├── basic_structure.rs           # Basic YAML structure validation
│       ├── service_configuration.rs     # Service config (env vars, ports, volumes)
│       ├── networking.rs                # Networks and service dependencies
│       ├── policies.rs                  # Restart policies and health checks
│       ├── formatting.rs                # YAML validity and formatting tests
│       └── complex_scenarios.rs         # Complex microservices scenarios
├── fixtures/
│   ├── valid_simple.ath                # Simple valid .ath file
│   ├── valid_complex_microservices.ath # Complex microservices setup
│   ├── invalid_syntax.ath              # File with syntax errors
│   ├── circular_dependencies.ath       # Circular dependency test
│   └── minimal_valid.ath               # Minimal valid configuration

I'm still working on it. There are several things that need to be reviewed/improved, especially certain features that I haven't fully thought through yet. I need to see how I can implement them.