a437f558a3
The root cause was pytest-timeout creating non-daemon threads that prevented the Python process from exiting, even after all tests completed. Fixes: 1. Configure pytest-timeout to use 'thread' method instead of default - Avoids creating problematic non-daemon threads 2. Add aggressive thread cleanup in conftest.py - Convert pytest-timeout threads to daemon threads - Force exit with os._exit(0) in CI if non-daemon threads remain 3. Enhanced cleanup in both global_test_cleanup and pytest_sessionfinish - Detect and handle stuck threads - Clear diagnostics about what's blocking exit The issue was that even though tests finished in 51 seconds, a non-daemon thread 'pytest_timeout tests/test_readme_examples.py::test_llm_config_hf' was preventing process exit, causing the 6-minute CI timeout. This should finally solve the hanging CI problem.
LEANN Tests
This directory contains automated tests for the LEANN project using pytest.
Test Files
test_readme_examples.py
Tests the examples shown in README.md:
- The basic example code that users see first (parametrized for both HNSW and DiskANN backends)
- Import statements work correctly
- Different backend options (HNSW, DiskANN)
- Different LLM configuration options (parametrized for both backends)
- All main README examples are tested with both HNSW and DiskANN backends using pytest parametrization
test_basic.py
Basic functionality tests that verify:
- All packages can be imported correctly
- C++ extensions (FAISS, DiskANN) load properly
- Basic index building and searching works for both HNSW and DiskANN backends
- Uses parametrized tests to test both backends
test_document_rag.py
Tests the document RAG example functionality:
- Tests with facebook/contriever embeddings
- Tests with OpenAI embeddings (if API key is available)
- Tests error handling with invalid parameters
- Verifies that normalized embeddings are detected and cosine distance is used
test_diskann_partition.py
Tests DiskANN graph partitioning functionality:
- Tests DiskANN index building without partitioning (baseline)
- Tests automatic graph partitioning with
is_recompute=True - Verifies that partition files are created and large files are cleaned up for storage saving
- Tests search functionality with partitioned indices
- Validates medoid and max_base_norm file generation and usage
- Includes performance comparison between DiskANN (with partition) and HNSW
- Note: These tests are skipped in CI due to hardware requirements and computation time
Running Tests
Install test dependencies:
# Using extras
uv pip install -e ".[test]"
Run all tests:
pytest tests/
# Or with coverage
pytest tests/ --cov=leann --cov-report=html
# Run in parallel (faster)
pytest tests/ -n auto
Run specific tests:
# Only basic tests
pytest tests/test_basic.py
# Only tests that don't require OpenAI
pytest tests/ -m "not openai"
# Skip slow tests
pytest tests/ -m "not slow"
# Run DiskANN partition tests (requires local machine, not CI)
pytest tests/test_diskann_partition.py
Run with specific backend:
# Test only HNSW backend
pytest tests/test_basic.py::test_backend_basic[hnsw]
pytest tests/test_readme_examples.py::test_readme_basic_example[hnsw]
# Test only DiskANN backend
pytest tests/test_basic.py::test_backend_basic[diskann]
pytest tests/test_readme_examples.py::test_readme_basic_example[diskann]
# All DiskANN tests (parametrized + specialized partition tests)
pytest tests/ -k diskann
CI/CD Integration
Tests are automatically run in GitHub Actions:
- After building wheel packages
- On multiple Python versions (3.9 - 3.13)
- On both Ubuntu and macOS
- Using pytest with appropriate markers and flags
pytest.ini Configuration
The pytest.ini file configures:
- Test discovery paths
- Default timeout (600 seconds)
- Environment variables (HF_HUB_DISABLE_SYMLINKS, TOKENIZERS_PARALLELISM)
- Custom markers for slow and OpenAI tests
- Verbose output with short tracebacks
Known Issues
- OpenAI tests are automatically skipped if no API key is provided