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A TLS handshake to a Tinfoil EHBP enclave that outlives the stdlib's
60s handshake_timeout raises ConnectionAbortedError. That is neither an
httpx.RequestError nor an asyncio.TimeoutError, so it escaped
forward_with_trailer's connect handler and fell through to
forward_ehbp_request's bare `except Exception`, which raised a
node-scoped UpstreamError(status_code=500). Bearer clients then saw a
misleading 500 ("An unexpected server error occurred") even though the
fault was on the provider hop.
Classify connect-phase transport failures at the source:
- ConnectionAbortedError (stdlib TLS handshake timer) -> EhbpTimeoutError
(UPSTREAM_TIMEOUT, reported as 424)
- other ssl.SSLError/ConnectionError/OSError -> new EhbpConnectionError
(UPSTREAM_UNAVAILABLE, reported as 424)
Both are UpstreamError subclasses carrying ERROR_SCOPE_UPSTREAM, so
create_upstream_error_response answers 424 with the
X-Routstr-Error-Scope: upstream header instead of implying the node is
down, and provider failover still applies.
Tests cover the handshake-timeout branch, the connection-failure branch,
the new error's metadata, and bearer-path propagation.
FastAPI Async Unit Tests
This directory contains async unit tests for the Routstr proxy FastAPI application.
Installation
First, ensure you have the development dependencies installed:
uv pip install -e ".[dev]"
Running Tests
To run all tests:
pytest
To run tests with coverage:
pytest --cov=routstr --cov-report=html
To run specific test files:
pytest tests/test_main.py
pytest tests/test_models.py
pytest tests/test_proxy.py
To run only async tests:
pytest -m asyncio
Test Structure
conftest.py- Pytest fixtures and configurationtest_main.py- Tests for main app endpointstest_account.py- Tests for wallet/account management endpointstest_proxy.py- Tests for the proxy functionality with mocked upstreamtest_models.py- Tests for model pricing and data structures
Key Fixtures
async_client- Async HTTP client for testing FastAPI endpointstest_session- In-memory SQLite database session for teststest_api_key- Pre-configured API key with balanceapi_key_with_balance- API key with sufficient balance for proxy tests
Environment Variables
The tests automatically set up required environment variables in conftest.py. No manual configuration needed.
Writing New Tests
- Use
@pytest.mark.asynciofor async tests - Use the provided fixtures for database and client access
- Mock external dependencies (like upstream API calls)
- Test both success and error cases
- Verify database state changes when applicable