# Eventos de testing: lifespan y startup - shutdown { #testing-events-lifespan-and-startup-shutdown }

Cuando necesitas que `lifespan` se ejecute en tus tests, puedes usar el `TestClient` con un statement `with`:

{* ../../docs_src/app_testing/tutorial004_py39.py hl[9:15,18,27:28,30:32,41:43] *}


Puedes leer más detalles sobre ["Ejecutar lifespan en tests en el sitio oficial de documentación de Starlette."](https://www.starlette.dev/lifespan/#running-lifespan-in-tests)

import okhttp3.FallbackTestClientSocketFactory.Companion.TLS_FALLBACK_SCSV

/**
 * An SSLSocketFactory that delegates calls. Sockets created by the delegate are wrapped with ones
 * that will not accept the [TLS_FALLBACK_SCSV] cipher, thus bypassing server-side fallback
 * checks on platforms that support it. Unfortunately this wrapping will disable any
 * reflection-based calls to SSLSocket from Platform.
 */
class FallbackTestClientSocketFactory(

Il est également conçu pour fonctionner comme une référence future.

Vous pouvez donc revenir et voir exactement ce dont vous avez besoin.

## Exécuter le code

Tous les blocs de code peuvent être copiés et utilisés directement (il s'agit en fait de fichiers Python testés).

Pour exécuter l'un de ces exemples, copiez le code dans un fichier `main.py`, et commencez `uvicorn` avec :

package com.google.common.eventbus;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.common.base.MoreObjects;

/**
 * Wraps an event that was posted, but which had no subscribers and thus could not be delivered.
 *
 * <p>Registering a DeadEvent subscriber is useful for debugging or logging, as it can detect
 * misconfigurations in a system's event distribution.
 *
 * @author Cliff Biffle
 * @since 10.0

* Adicionar um **JSON Schema** para a resposta, na *operação de rota* do OpenAPI.
    * Isso será usado pela **documentação automática**.

Para uma **web API**, isso normalmente envolve colocá-la em uma **máquina remota**, com um **programa de servidor** que ofereça bom desempenho, estabilidade, etc., de modo que seus **usuários** possam **acessar** a aplicação com eficiência e sem interrupções ou problemas.

## Prometheus Probe

MinIO allows reading metrics for the entire cluster from any single node. This allows for metrics collection for a MinIO instance across all servers. Thus, metrics collection for instances behind a load balancer can be done without any knowledge of the individual node addresses. The cluster wide metrics can be read at
`<Address for MinIO Service>/minio/v2/metrics/cluster`.

Si vas a la **UI de la documentación de la API** en `/docs` podrás ver la **documentación** de cookies para tus *path operations*.

state. It maps the nodes of a dataflow graph across many machines in a cluster, and within a machine across multiple computational devices, including multicore CPUs, general purpose GPUs, and custom-designed ASICs known as Tensor Processing Units (TPUs). This architecture gives flexibility to the application developer, whereas in previous “parameter server” designs the management of shared state is built into the system, TensorFlow enables developers to experiment with novel optimizations and training...

* ne pas utiliser `Annotated`

...Python a une petite syntaxe spéciale pour cela.

Passez `*`, comme premier paramètre de la fonction.

Python ne fera rien avec ce `*`, mais il saura que tous les paramètres suivants doivent être appelés comme arguments "mots-clés" (paires clé-valeur), également connus sous le nom de <abbr title="De : K-ey W-ord Arg-uments"><code>kwargs</code></abbr>. Même s'ils n'ont pas de valeur par défaut.