Writing tests for REST API endpoints

With everything in place, let’s create the test_login.py file, where we’ll test the authentication routes:

(venv)$ touch tests/test_login.py

In the test file, we’ll start by importing the dependencies:

import httpx
import pytest

Testing the sign-up route

The first endpoint we’ll be testing is the sign-up endpoint. We’ll be adding the pytest.mark.asyncio decorator, which informs pytest to treat this as an async test. Let’s define the function and the request payload:

@pytest.mark.asyncio
async def test_sign_new_user(default_client: httpx.AsyncClient) -> None:
    payload = {
        "email": "[e-mail]",
        "password": "testpassword",
    }

Let’s define the request header and expected response:

 ...