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Jeroen Ubbink
b8c5a6e0f4
_calculate_from_usd_cost multiplies the provider fee into the same local that holds the upstream's reported USD cost, destroying it in place. total_usd is post-fee and nothing kept the pre-fee figure, so a later cost check could not compare what the upstream said against what we charged. Dividing the total back out does not recover it: on a token-priced request the total is the node's own arithmetic, so the division compares that number to itself. Add upstream_usd to CostData, captured before the multiply, with Field(default=0.0, exclude=True) so it never reaches a client -- published beside total_usd it would spell out the node's margin as a ratio. It lives on the object and does not survive .dict(), which is what the outbound cost metadata and response headers are built from. Token-priced requests leave it at 0.0, which doubles as the discriminator for whether an upstream reported a cost at all. No persistence, no migration, no charged-amount change.
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