"""
A/B testing framework.
"""

from typing import Any, Dict, List, Optional


class ABTestFramework:
    """A/B testing framework for models."""
    
    def __init__(self):
        self.test_groups = {}
    
    def create_test_group(self, name: str, model: Any):
        """Create a test group."""
        self.test_groups[name] = {'model': model, 'results': []}
        return self.test_groups[name]
    
    def compare_groups(self, baseline: str, treatment: str, metric: str):
        """Compare two test groups."""
        return {
            'baseline': baseline,
            'treatment': treatment,
            'metric': metric,
            'p_value': 0.05,  # Placeholder
            'is_significant': True
        }


class ModelComparison:
    """Model comparison utilities."""
    
    def __init__(self):
        self.framework = ABTestFramework()
    
    def compare_models(self, models: Dict[str, Any], test_cases: List[str], **kwargs):
        """Compare multiple models."""
        results = {}
        
        for name, model in models.items():
            # Placeholder comparison
            results[name] = {
                'model_name': name,
                'test_cases': len(test_cases),
                'performance': 0.8  # Placeholder
            }
        
        return results
