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    img: https://fastapi.tiangolo.com/img/sponsors/svix.svg
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    title: Stainless | Generate best-in-class SDKs
    img: https://fastapi.tiangolo.com/img/sponsors/stainless.png

<a href="https://www.svix.com/" target="_blank" title="Svix - Webhooks as a service"><img src="https://fastapi.tiangolo.com/img/sponsors/svix.svg"></a>
<a href="https://www.stainlessapi.com/?utm_source=fastapi&utm_medium=referral" target="_blank" title="Stainless | Generate best-in-class SDKs"><img src="https://fastapi.tiangolo.com/img/sponsors/stainless.png"></a>

# Testing { #testing }

Thanks to <a href="https://www.starlette.io/testclient/" class="external-link" target="_blank">Starlette</a>, testing **FastAPI** applications is easy and enjoyable.

It is based on <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>, which in turn is designed based on Requests, so it's very familiar and intuitive.

## Details about the `Request` object { #details-about-the-request-object }

As **FastAPI** is actually **Starlette** underneath, with a layer of several tools on top, you can use Starlette's <a href="https://www.starlette.io/requests/" class="external-link" target="_blank">`Request`</a> object directly when you need to.

```
https://yourapi.com/invoices/?callback_url=https://www.external.org/events
```

with a JSON body of:

```JSON
{
    "id": "2expen51ve",
    "customer": "Mr. Richie Rich",
    "total": "9999"
}
```

then *your API* will process the invoice, and at some point later, send a callback request to the `callback_url` (the *external API*):

```
https://www.external.org/events/invoices/2expen51ve
```

FastAPI 🧍 🔛 ⌚ 🐘:

* <a href="https://www.starlette.io/" class="external-link" target="_blank">💃</a> 🕸 🍕.
* <a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> 📊 🍕.

## 👷‍♂

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

<div style="text-align: right; margin-right: 10%;">Deon Pillsbury - <strong>Cisco</strong> <a href="https://www.linkedin.com/posts/deonpillsbury_cisco-cx-python-activity-6963242628536487936-trAp/" target="_blank"><small>(ref)</small></a></div>

---

## **Typer**, a CLI-ok FastAPI-ja

with-fastapi title: Explore How to Effectively Use JWT With FastAPI - author: Nicoló Lino author_link: https://www.nlino.com link: https://github.com/softwarebloat/python-tracing-demo title: Instrument FastAPI with OpenTelemetry tracing and visualize traces in Grafana Tempo. - author: Mikhail Rozhkov, Elena Samuylova author_link: https://www.linkedin.com/in/mnrozhkov/ link: https://www.evidentlyai.com/blog/fastapi-tutorial title: ML serving and monitoring with FastAPI and Evidently - author: Visual...

In HTTP Basic Auth, the application expects a header that contains a username and a password.

If it doesn't receive it, it returns an HTTP 401 "Unauthorized" error.

And returns a header `WWW-Authenticate` with a value of `Basic`, and an optional `realm` parameter.

That tells the browser to show the integrated prompt for a username and password.

<div style="text-align: right; margin-right: 10%;">Deon Pillsbury - <strong>Cisco</strong> <a href="https://www.linkedin.com/posts/deonpillsbury_cisco-cx-python-activity-6963242628536487936-trAp/" target="_blank"><small>(ref)</small></a></div>

---

## **Typer**, el FastAPI de las CLIs