* call {@code supplier} or invoke {@code function} until it is called.
   */
  public static <F extends @Nullable Object, T extends @Nullable Object> Supplier<T> compose(
      Function<? super F, T> function, Supplier<F> supplier) {
    return new SupplierComposition<>(function, supplier);
  }

  private static final class SupplierComposition<

      runnables = null; // allow GC to free listeners even if this stays around for a while.
    }
    // If we succeeded then list holds all the runnables we to execute. The pairs in the stack are
    // in the opposite order from how they were added so we need to reverse the list to fulfill our
    // contract.
    // This is somewhat annoying, but turns out to be very fast in practice. Alternatively, we could

            return sourceLevel;
        }
                ]]>
          </code>
        </codeSegment>
      </codeSegments>
    </class>
    <class rootElement="true" xml.tagName="toolchains" xsd.compositor="sequence">
      <name>PersistedToolchains</name>
      <superClass>TrackableBase</superClass>
      <description>
        The {@code &lt;toolchains&gt;} element is the root of the descriptor.

///

## Separando testes

Em uma aplicação real, você provavelmente teria seus testes em um arquivo diferente.

E seu aplicativo **FastAPI** também pode ser composto de vários arquivos/módulos, etc.

### Arquivo do aplicativo **FastAPI**

Digamos que você tenha uma estrutura de arquivo conforme descrito em [Aplicativos maiores](bigger-applications.md){.internal-link target=_blank}:

### Full Stack FastAPI PostgreSQL – Funktionen

* Vollständige **Docker**-Integration (Docker-basiert).
* Docker-Schwarmmodus-Deployment.
* **Docker Compose**-Integration und Optimierung für die lokale Entwicklung.
* **Produktionsbereit** Python-Webserver, verwendet Uvicorn und Gunicorn.

## Prerequisites

Configure and install casdoor server by following [Casdoor Server Installation](https://casdoor.org/docs/basic/server-installation).
For a quick installation, docker-compose reference configs are also available on the [Casdoor Try with Docker](https://casdoor.org/docs/basic/try-with-docker).

### Configure Casdoor

- Go to Applications
  - Create or use an existing Casdoor application

### Full Stack FastAPI PostgreSQL - Особенности

* Полностью интегрирован с **Docker** (основан на Docker).
* Развёртывается в режиме Docker Swarm.
* Интегрирован с **Docker Compose** и оптимизирован для локальной разработки.
* **Готовый к реальной работе** веб-сервер Python использующий Uvicorn и Gunicorn.

   */
  public static Escaper nullEscaper() {
    return NULL_ESCAPER;
  }

  // An Escaper that efficiently performs no escaping.
  // Extending CharEscaper (instead of Escaper) makes Escapers.compose() easier.
  private static final Escaper NULL_ESCAPER =
      new CharEscaper() {
        @Override
        public String escape(String string) {
          return checkNotNull(string);
        }

        @Override

* Intégration **Docker** complète (basée sur Docker).
* Déploiement Docker en mode <a href="https://docs.docker.com/engine/swarm/" class="external-link" target="_blank">Swarm</a>
* Intégration **Docker Compose** et optimisation pour développement local.
* Serveur web Python **prêt au déploiement** utilisant Uvicorn et Gunicorn.
* Backend Python <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">**FastAPI**</a> :

        assertTrue(shorter.equals(longer), "Shorter equals longer when prefix matches (implementation behavior)");

        // In the opposite direction, an out-of-bounds occurs internally and is caught as false
        assertFalse(longer.equals(shorter), "Longer does not equal shorter (implementation behavior)");
    }