`TestClient` 是基于 <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a> 的。幸运的是，我们可以直接使用它来测试API。

## 示例

举个简单的例子，让我们来看一个[更大的应用](../tutorial/bigger-applications.md){.internal-link target=_blank}和[测试](../tutorial/testing.md){.internal-link target=_blank}中描述的类似文件结构：

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

    * <a href="https://fastapi.tiangolo.com/features/" class="external-link" target="_blank">**Множество других возможностей**</a> включая автоматическую проверку и сериализацию данных, интерактивную документацию, аутентификацию...

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * The name of the field.
     */
    private final String fieldName;

    /**
     * Creates a {@link FieldNotStaticRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param fieldName
     *            Field name
     */

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * The name of the method.
     */
    private final String methodName;

    /**
     * Creates a {@link MethodNotStaticRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param methodName
     *            Method name
     */

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * The name of the field.
     */
    private final String fieldName;

    /**
     * Creates a {@link NoSuchFieldRuntimeException}.
     *
     * @param targetClass
     *            Target class
     * @param fieldName
     *            Field name
     * @param cause

### Install `pydantic-settings` { #install-pydantic-settings }

First, make sure you create your [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install the `pydantic-settings` package:

<div class="termy">

```console

Está basado en <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>, que a su vez está diseñado basado en Requests, por lo que es muy familiar e intuitivo.

Con él, puedes usar <a href="https://docs.pytest.org/" class="external-link" target="_blank">pytest</a> directamente con **FastAPI**.

		if target.SourceBucket == bucket &&
			target.TargetBucket == bucket &&
			target.Endpoint == ep.Host &&
			target.Secure == (ep.Scheme == "https") &&
			target.Type == madmin.ReplicationService {
			return target.Arn
		}
	}
	return ""
}

// generate ARN that is unique to this target type
func generateARN(t *madmin.BucketTarget, deplID string) string {
	uuid := deplID
	if uuid == "" {
		uuid = mustGetUUID()

👆 🔜 👀 🎻 📨:

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

### 🎓 🛠️ 🩺

🔜 🚶 <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

👆 🔜 👀 🏧 🎓 🛠️ 🧾 (🚚 <a href="https://github.com/swagger-api/swagger-ui" class="external-link" target="_blank">🦁 🎚</a>):

Qualquer função que possa ser utilizada com:

* <a href="https://docs.python.org/3/library/contextlib.html#contextlib.contextmanager" class="external-link" target="_blank">`@contextlib.contextmanager`</a> ou
* <a href="https://docs.python.org/3/library/contextlib.html#contextlib.asynccontextmanager" class="external-link" target="_blank">`@contextlib.asynccontextmanager`</a>

pode ser utilizada como uma dependência do **FastAPI**.