tests/README.md

# Tests

Pytest test suite for all modules.

## Running

```bash
# Run all tests
python -m pytest tests/ -v

# Run specific module
python -m pytest tests/test_features.py -v

# Run with coverage
python -m pytest tests/ --cov=src
```

## Test Files

| File | Module | Tests |
|------|--------|-------|
| `test_data.py` | Data preprocessing | Transforms, channel handling, dataset loading |
| `test_features.py` | Feature extraction | CLIP embedding, batch processing |
| `test_retrieval.py` | FAISS index | Build, search, save/load |
| `test_multimodal.py` | Multi-modal retrieval | Same-modal, cross-modal queries |
| `test_evaluation.py` | Metrics | F1@K computation |
| `test_ui.py` | Gradio UI | App creation, retrieval function |