# Testing

One of the design principles of Bocadillo is to make it easy to write high-quality applications. This includes helping you write great tests and ensure the quality of your apps.

# Test client

The create_client helper can be used to build a Starlette TestClient out of an App instance. Additional arguments are passed to the TestClient constructor.

from bocadillo import App, create_client

app = App()
client = create_client(app)

The returned TestClient exposes the same interface as the requests library, and has other useful features such as WebSocket testing helpers.

We recommend you read the documentation for Starlette's test client for further information.

# Live server

If you need to perform integration tests against a live server, the LiveServer context manager should come handy. It starts a uvicorn server in a separate process, and terminates it when exiting the context. You can then make requests to it, e.g. using requests:

import requests
from bocadillo import App, configure, LiveServer

app = App()
configure(app)

with LiveServer(app) as server:
    response = requests.get(server.url("/foo"))

# Miscellaneous utilities

# Overriding environment variables

If you need to override some environment variables during your tests, you may find the override_env helper useful:

from bocadillo.utils import override_env

with override_env("APP_ENV", "testing"):
    ...