"""Test validation engine"""
import pytest
from app.validation import ConfigValidator


def test_validate_valid_config():
    """Test validation of valid config"""
    config = {
        "vlans": [{"id": 10, "name": "USERS"}],
        "interfaces": [
            {
                "name": "GigabitEthernet0/1",
                "type": "access",
                "vlan": 10,
                "enabled": True,
            }
        ],
    }
    
    validator = ConfigValidator()
    errors, warnings = validator.validate(config)
    
    assert errors == []
    assert warnings == []


def test_validate_undefined_vlan_reference():
    """Test error when interface references undefined VLAN"""
    config = {
        "vlans": [{"id": 10, "name": "USERS"}],
        "interfaces": [
            {
                "name": "GigabitEthernet0/1",
                "type": "access",
                "vlan": 99,  # Doesn't exist
                "enabled": True,
            }
        ],
    }
    
    validator = ConfigValidator()
    errors, warnings = validator.validate(config)
    
    assert any("undefined VLAN 99" in e["message"] for e in errors)


def test_validate_vlan_out_of_range():
    """Test error for invalid VLAN ID"""
    config = {
        "vlans": [{"id": 5000, "name": "INVALID"}],
    }
    
    validator = ConfigValidator()
    errors, warnings = validator.validate(config)
    
    assert any("5000" in e["message"] for e in errors)