# Testing Instructions for rtx-sklearn-py

## Running Tests

Due to PyO3's `extension-module` feature conflicting with test linking, tests must be run with the feature disabled:

```bash
# Run all tests
cargo test -p rtx-sklearn-py --no-default-features --features gpu,async

# Run a specific test
cargo test -p rtx-sklearn-py --no-default-features --features gpu,async test_name

# Compile tests without running
cargo test -p rtx-sklearn-py --no-default-features --features gpu,async --no-run
```

## Why This is Needed

The `extension-module` feature in PyO3 is required for building Python extension modules (`.so` files) but prevents linking against Python libraries during testing. By disabling it for tests, we can:

1. Compile and run Rust unit tests
2. Test internal logic without Python runtime
3. Perform integration testing

## Python Integration Tests

For full end-to-end testing of the Python API, use pytest:

```bash
# Build the extension module first
maturin develop

# Run Python tests
pytest tests/python/
```

## Test Structure

- `tests/basic_test.rs` - Basic compilation tests
- `tests/integration_test.rs` - Module structure and error handling tests
- `tests/tdd_comprehensive_test.rs` - Placeholder for future comprehensive tests
- `tests/tdd_wrapper_test.rs` - Wrapper smoke tests
- `tests/test_simple_classifiers.rs` - Classifier smoke tests

Note: Many tests are currently stubs or placeholders as the full PyO3 API requires Python runtime for proper testing.