/// note | Technical Details

The other two variables, `image_base64` and `binary_image`, are an image encoded in Base64, and then converted to bytes, to then pass it to `io.BytesIO`.

Only so that it can live in the same file for this example and you can copy it and run it as is. 🥚

///

import java.util.regex.Pattern;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@link ForwardingWrapperTester}. Live in a different package to detect reflection
 * access issues, if any.
 *
 * @author Ben Yu
 */
public class ForwardingWrapperTesterTest extends TestCase {

Il inclut aussi ce qui a changé, comment les validations sont désormais plus correctes et strictes, les pièges possibles, etc.

Vous pouvez le lire pour mieux comprendre ce qui a changé.

## Tests { #tests }

Vous devez vous assurer d'avoir des [tests](../tutorial/testing.md) pour votre application et de les exécuter en intégration continue (CI).

Estos son detalles muy técnicos sobre los estándares **JSON Schema** y **OpenAPI**.

Si las ideas anteriores ya funcionan para ti, eso podría ser suficiente, y probablemente no necesites estos detalles, siéntete libre de omitirlos.

///

Antes de OpenAPI 3.1.0, OpenAPI usaba una versión más antigua y modificada de **JSON Schema**.

      int maxSize() {
        return saturatedAdd(maxSize(set1), maxSize(set2));
      }
    };
  }

  /**
   * Returns the elements of {@code unfiltered} that satisfy a predicate. The returned set is a live
   * view of {@code unfiltered}; changes to one affect the other.
   *
   * <p>The resulting set's iterator does not support {@code remove()}, but all other set methods

{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2,
    "tags": ["rock", "metal", "bar"],
    "image": {
        "url": "http://example.com/baz.jpg",
        "name": "The Foo live"
    }
}
```

繰り返しになりますが、**FastAPI** を使用して、その宣言を行うだけで以下のような恩恵を受けられます:

* ネストされたモデルでも対応可能なエディタのサポート（補完など）
* データ変換
* データの検証
* 自動文書化

## 特殊な型とバリデーション { #special-types-and-validation }

    { include-group = "translations" },
    "playwright >=1.57.0",
    "prek >=0.2.22",
]
docs = [
    { include-group = "docs-tests" },
    "black >=25.1.0",
    "cairosvg >=2.8.2",
    # for MkDocs live reload
    "click==8.2.1",
    "griffe-typingdoc >=0.3.0",
    "griffe-warnings-deprecated >=1.1.0",
    "jieba >=0.42.1",
    "markdown-include-variants >=0.0.8",
    "mdx-include >=1.4.1,<2.0.0",

import java.util.regex.Pattern;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@link ForwardingWrapperTester}. Live in a different package to detect reflection
 * access issues, if any.
 *
 * @author Ben Yu
 */
public class ForwardingWrapperTesterTest extends TestCase {

... et déclarez que son type est le modèle que vous avez créé : `Item`.

## Résultats { #results }

En utilisant uniquement les déclarations de type Python, **FastAPI** réussit à :

* Lire le contenu de la requête en tant que JSON.
* Convertir les types correspondants (si nécessaire).
* Valider la donnée.

 *       elements were added (insertion order)
 * </ul>
 *
 * <p>{@code Network}s built by this class also guarantee that each collection-returning accessor
 * returns a <b>(live) unmodifiable view</b>; see <a
 * href="https://github.com/google/guava/wiki/GraphsExplained#accessor-behavior">the external
 * documentation</a> for details.
 *
 * <p>Examples of use:
 *
 * {@snippet :