You also get error checks for incorrect type operations:

<img src="/img/tutorial/body/image04.png">

This is not by chance, the whole framework was built around that design.

And it was thoroughly tested at the design phase, before any implementation, to ensure it would work with all the editors.

There were even some changes to Pydantic itself to support this.

```hl_lines="4"
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

Diese Zeile zeigt die URL, unter der Ihre Anwendung auf Ihrem lokalen Computer bereitgestellt wird.

### Testen Sie es

Öffnen Sie Ihren Browser unter <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000.</a>

Sie werden folgende JSON-Response sehen:

```JSON
{"message": "Hello World"}

* <a href="https://github.com/swagger-api/swagger-ui" class="external-link" target="_blank"><strong>Swagger UI</strong></a>, met interactieve interface, maakt het mogelijk je API rechtstreeks vanuit de browser aan te roepen en te testen.

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

Es kann von Anwendungen und Systemen Dritter verwendet werden.

Und es kann auch von Ihnen selbst verwendet werden, um dieselbe Anwendung zu debuggen, zu prüfen und zu testen.

## Der `password`-Flow

Lassen Sie uns nun etwas zurückgehen und verstehen, was das alles ist.

///

/// check | "A inspiré **FastAPI** à"

Trouvez un moyen d'avoir une performance folle.

C'est pourquoi **FastAPI** est basé sur Starlette, car il s'agit du framework le plus rapide disponible (testé par des benchmarks tiers).

///

### <a href="https://falconframework.org/" class="external-link" target="_blank">Falcon</a>

 */
@GwtCompatible(emulated = true)
public class FluentIterableTest extends TestCase {

  @GwtIncompatible // NullPointerTester
  public void testNullPointerExceptions() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(FluentIterable.class);
  }

  public void testFromArrayAndAppend() {
    FluentIterable<TimeUnit> unused = FluentIterable.from(TimeUnit.values()).append(SECONDS);
  }

 *       tested in isolation.
 *   <li>The documentation style for testcases is to provide as javadoc a simple sentence or two
 *       describing the property that the testcase method purports to test. The javadocs do not say
 *       anything about how the property is tested. To find out, read the code.

///

/// check | "Inspired **FastAPI** to"

Find a way to have a crazy performance.

That's why **FastAPI** is based on Starlette, as it is the fastest framework available (tested by third-party benchmarks).

///

### <a href="https://falconframework.org/" class="external-link" target="_blank">Falcon</a>

		}

		if result.String() != c.content {
			t.Errorf("Case %d failed: expected %v result %v", i, c.content, result.String())
		}
	}
}

type tester interface {
	Fatal(...interface{})
}

func openTestFile(t tester, file string) []byte {
	f, err := os.ReadFile("testdata/testdata.zip")
	if err != nil {
		t.Fatal(err)
	}
	z, err := zip.NewReader(bytes.NewReader(f), int64(len(f)))

* Diğer ekstra özellikler (Starlette sayesinde):
    * **WebSocketler**
    * HTTPX ve `pytest` sayesinde aşırı kolay testler.
    * **CORS**
    * **Cookie Sessions**
    * ...ve daha fazlası.

## Performans