# # User Gallery Unit Tests

# This module contains unit tests for the user gallery fusion component.

# ## Test Structure

# ```
# tests/unit/test_user_gallery/
# ├── __init__.py              # Module initialization
# ├── test_models.py           # Data model tests
# ├── test_services.py         # Service layer tests
# ├── test_embeddings.py       # Embedding generation tests
# ├── test_fusion.py           # Fusion logic tests
# ├── test_utils.py            # Utility function tests
# └── test_api.py              # API integration tests
# ```

# ## Test Coverage

# ### Core Models
# - UserGallery model validation and business logic
# - VariantCluster lifecycle management
# - ImageAsset processing states and validation
# - EmbeddingSet quality scoring and normalization
# - RetrievalProbe and RetrievalResult functionality

# ### Services
# - Gallery creation and management
# - Embedding generation workflows
# - Variant clustering algorithms
# - Fusion scoring and retrieval
# - Storage and persistence operations

# ### Utilities
# - Image preprocessing and validation
# - FAISS index management
# - Configuration handling
# - Error handling and logging

# ### API Integration
# - REST API endpoint testing
# - Request/response validation
# - Error condition handling
# - Authentication and authorization

# ## Testing Strategy

# ### Unit Test Principles
# 1. **Isolation**: Each test runs independently with mocked dependencies
# 2. **Fast Execution**: Tests complete quickly for rapid feedback
# 3. **Deterministic**: Tests produce consistent results across runs
# 4. **Comprehensive**: All public methods and edge cases are tested

# ### Mocking Strategy
# - External services (DeepFace, FAISS) are mocked
# - File system operations use temporary directories
# - Database operations use in-memory storage
# - Network calls are intercepted and mocked

# ### Test Data
# - Real image files for integration scenarios
# - Synthetic data for unit test isolation
# - Edge cases and error conditions
# - Performance benchmarks for critical paths

# ## Running Tests

# ```bash
# # Run all user gallery tests
# pytest tests/unit/test_user_gallery/ -v

# # Run specific test modules
# pytest tests/unit/test_user_gallery/test_models.py -v
# pytest tests/unit/test_user_gallery/test_services.py -v

# # Run with coverage
# pytest tests/unit/test_user_gallery/ --cov=src.user_gallery -v

# # Run with performance profiling
# pytest tests/unit/test_user_gallery/ --profile -v
# ```

# ## Test Configuration

# Tests use pytest fixtures for common setup and teardown:
# - Temporary directory management
# - Mock service configuration
# - Test data generation
# - Performance measurement

# ## Continuous Integration

# Tests are executed in CI/CD pipeline with:
# - Unit test execution on every commit
# - Integration test execution on pull requests
# - Performance regression detection
# - Coverage reporting and thresholds
