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redshift
01c01fe8ad
PPQ.AI (BYOK) requests were billed at ~5% of their true cost because _resolve_usd_cost fell through to usage.cost (a small BYOK routing fee) instead of using cost_details.upstream_inference_cost (the real inference cost). The proxy operator absorbed the inference cost. The fix adds a BYOK-specific branch in _resolve_usd_cost: when is_byok is true and cost_details.upstream_inference_cost is present, bill upstream_inference_cost + byok_fee — what PPQ actually deducts from the balance. Non-BYOK providers (e.g. OpenRouter) are unaffected because their usage.cost already equals upstream_inference_cost. Regression tests mirror the live glm-5.2-fast request from GitHub issue #615, asserting the corrected billing (940,274 msats vs the old 45,202 msats — a 20.8× undercharge). Closes #615
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