Es solo una función estándar que puede recibir parámetros.

Puede ser una función `async def` o una función normal `def`, **FastAPI** sabrá cómo manejarla correctamente.

En este caso, la función de tarea escribirá en un archivo (simulando el envío de un email).

Y como la operación de escritura no usa `async` y `await`, definimos la función con un `def` normal:

{* ../../docs_src/background_tasks/tutorial001_py310.py hl[6:9] *}

{* ../../docs_src/app_testing/tutorial001_py310.py hl[2,12,15:18] *}

/// tip | İpucu

Test fonksiyonlarının `async def` değil, normal `def` olduğuna dikkat edin.

Client'a yapılan çağrılar da `await` kullanılmadan, normal çağrılardır.

Bu sayede `pytest`'i ek bir karmaşıklık olmadan doğrudan kullanabilirsiniz.

///

/// note | Teknik Detaylar

 * {@link SmbException#getStatusByCode(int)}.
 */
@DisplayName("SmbAuthException Tests")
class SmbAuthExceptionTest {

    /**
     * Provides a set of error codes covering normal, edge and unknown cases.
     */
    static Stream<Arguments> errorCodes() {
        return Stream.of(
                // Known NT status code - NT_STATUS_UNSUCCESSFUL

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven;

import org.apache.maven.plugin.MojoFailureException;

/**
 * Exception which occurs when a normal (i.e. non-aggregator) mojo fails to
 * execute. In this case, the mojo failed while executing against a particular
 * project instance, so we can wrap the {@link MojoFailureException} with context

                }
                return createMockRescorerBuilder();
            }
        };

        // Test normal case
        Map<String, Object> normalParams = new HashMap<>();
        normalParams.put("normal", "value");
        assertNotNull(queryRescorer.evaluate(normalParams));

        // Test exception case
        Map<String, Object> exceptionParams = new HashMap<>();

  public class CloseSocket(
    public val closeSocket: Boolean = true,
    public val shutdownInput: Boolean = false,
    public val shutdownOutput: Boolean = false,
  ) : SocketEffect

  /**
   * On HTTP/2, send a [GOAWAY frame](https://tools.ietf.org/html/rfc7540#section-6.8) immediately
   * after the response and will close the connection when the client's socket is exhausted.
   *
   * On HTTP/1 this closes the socket.
   */

    assert response.json() == {"name": "widget", "price": 9.99}
    mock_dumps.assert_not_called()


def test_explicit_response_class_uses_json_dumps():
    """When response_class is explicitly set to JSONResponse, the normal path
    is used and json.dumps is called via JSONResponse.render()."""
    with patch(
        "starlette.responses.json.dumps", wraps=__import__("json").dumps
    ) as mock_dumps:
        response = client.get("/explicit")

    val pingFrame = peer.takeFrame()
    assertThat(pingFrame.type).isEqualTo(Http2.TYPE_PING)
    val goaway = peer.takeFrame()
    assertThat(goaway.type).isEqualTo(Http2.TYPE_GOAWAY)
    assertThat(goaway.streamId).isEqualTo(0)
    assertThat(goaway.errorCode).isEqualTo(ErrorCode.PROTOCOL_ERROR)
  }

  @Test fun close() {
    // Write the mocking script.

# GraphQL { #graphql }

As **FastAPI** is based on the **ASGI** standard, it's very easy to integrate any **GraphQL** library also compatible with ASGI.

You can combine normal FastAPI *path operations* with GraphQL on the same application.

/// tip

**GraphQL** solves some very specific use cases.

It has **advantages** and **disadvantages** when compared to common **web APIs**.

{* ../../docs_src/extra_data_types/tutorial001_an_py310.py hl[1,3,12:16] *}

Note that the parameters inside the function have their natural data type, and you can, for example, perform normal date manipulations, like: