Setting up testing environments

This recipe will show you how to setup an efficient and effective testing environment tailored for FastAPI applications. By the end of the recipe, you will have a solid foundation for writing, running, and managing tests.

Getting ready

Make sure you have an application running. If not you can start by creating a project folder proto_app.

If you haven’t installed the packages with the requirements.txt file provided on the GitHub repository, then install the testing libraries pytest and httpx in your environment with:

$ pip install pytest pytest-asyncio httpx

In the project root folder create a new folder proto_app with a main.py module containing the app object instance:

from fastapi import FastAPI
app = FastAPI()
@app.get("/home")
async def read_main():
    return {"message": "Hello World"}

With a minimal app setup, we can proceed by scaffolding our project to accommodate the...