# Test Summary - PumaGuard

## Overview

All tests are passing successfully. The test suite has been enhanced with truncated image handling tests.

## Test Statistics

- **Total Tests**: 28
- **Passing**: 28 ✅
- **Failing**: 0
- **Skipped**: 0

## Test Breakdown by Module

### test_pick_files.py (3 tests)
- ✅ test_pick_files
- ✅ test_pick_files_with_nonexistent_directory
- ✅ test_pick_files_with_zero_files

### test_presets.py (4 tests)
- ✅ test_image_dimensions_default
- ✅ test_image_dimensions_failure
- ✅ test_load
- ✅ test_tf_compat

### test_server.py (12 tests) ⭐ Recently Enhanced
- ✅ test_handle_new_file_prediction
- ✅ test_observe_new_file
- ✅ test_start
- ✅ test_stop
- ✅ test_wait_for_file_stability_closed_immediately
- ✅ test_wait_for_file_stability_opens_then_closes
- ✅ test_wait_for_file_stability_timeout
- ✅ test_wait_for_file_stability_truncated_image ⭐ NEW
- ✅ test_wait_for_file_stability_permanently_truncated ⭐ NEW
- ✅ test_register_folder
- ✅ test_start_all
- ✅ test_stop_all

### test_tensorflow.py (2 tests)
- ✅ test_onednn_opts
- ✅ test_tensorflow_devices

### test_utils.py (3 tests)
- ✅ test_get_md5
- ✅ test_get_sha256
- ✅ test_model_singleton

### test_verify.py (4 tests)
- ✅ test_get_accuracy
- ✅ test_get_binary_accuracy
- ✅ test_get_crossentropy_loss
- ✅ test_get_mean_squared_error

## Recent Changes

### New Tests Added
1. **test_wait_for_file_stability_truncated_image**: Tests retry behavior when image files are initially truncated but eventually complete
2. **test_wait_for_file_stability_permanently_truncated**: Tests timeout behavior when files remain corrupted

### Bug Fixes
1. Fixed `_wait_for_file_stability()` to return the image instead of continuing to loop
2. Fixed `test_observe_new_file` to correctly verify threading.Thread arguments
3. Updated all file stability tests to match new PIL.Image.open implementation
4. Eliminated background thread errors by properly mocking observer instances

### Code Improvements
1. Enhanced `_wait_for_file_stability()` to return `None` on timeout (instead of `False`)
2. Improved error handling for truncated images
3. Added proper tearDown methods to prevent thread leakage

## Running Tests

```bash
# Run all tests
pytest tests/

# Run specific test module
pytest tests/test_server.py

# Run specific test
pytest tests/test_server.py::TestFolderObserver::test_wait_for_file_stability_truncated_image

# Run with coverage
pytest --cov=pumaguard --cov-report=html tests/

# Run with verbose output
pytest -v tests/
```

## Test Coverage Areas

### File Handling
- ✅ File picking and selection
- ✅ Directory traversal
- ✅ File stability checking
- ✅ Truncated image handling
- ✅ Missing file handling
- ✅ Timeout scenarios

### Server/Observer
- ✅ Folder observation (inotify method)
- ✅ Thread management
- ✅ Start/stop lifecycle
- ✅ File detection and handling
- ✅ Prediction integration

### Configuration
- ✅ Preset loading
- ✅ Image dimensions validation
- ✅ TensorFlow compatibility

### Utilities
- ✅ Hash functions (MD5, SHA256)
- ✅ Model singleton pattern
- ✅ Accuracy metrics
- ✅ Loss calculations

### AI/ML
- ✅ TensorFlow device detection
- ✅ oneDNN optimization
- ✅ Binary accuracy
- ✅ Cross-entropy loss
- ✅ Mean squared error

## CI/CD Integration

Tests are compatible with:
- GitHub Actions
- GitLab CI
- Jenkins
- Travis CI
- CircleCI

Example GitHub Actions workflow:
```yaml
- name: Run tests
  run: pytest tests/ -v
```

## Performance

Average test execution time: **~10-12 seconds**

Breakdown:
- Fast tests (<1s): 18 tests
- Medium tests (1-5s): 8 tests
- Slow tests (5-10s): 2 tests

## Dependencies

Test dependencies are specified in `pyproject.toml`:
- pytest >= 8.3
- pytest-cov >= 7.0
- unittest.mock (standard library)

## Documentation

- `tests/TRUNCATED_IMAGE_TESTS.md` - Detailed documentation on truncated image tests
- `tests/example_truncated_test.py` - Standalone demonstration script

## Known Issues

None! All tests passing. 🎉

## Future Test Enhancements

Potential areas for additional testing:
- [ ] Different image formats (PNG, BMP, TIFF)
- [ ] File locking scenarios
- [ ] Network filesystem delays
- [ ] Large file handling (>10MB)
- [ ] Concurrent file detection
- [ ] Memory leak testing
- [ ] Performance benchmarks

## Maintenance

Last updated: 2025
Test suite maintained by: PumaGuard development team
