# Tests Asíncronos

Ya has visto cómo probar tus aplicaciones de **FastAPI** usando el `TestClient` proporcionado. Hasta ahora, solo has visto cómo escribir tests sincrónicos, sin usar funciones `async`.

                        }
                    }
                    return null;
                }
                if (this.isDataFromNodeStatus) {
                    /*
                     * 'this' has been updated and should now
                     * have a real NetBIOS name
                     */
                    this.calledName = null;
                    return getHostName();
                }

   *
   * For streaming requests with a body, headers must be prepared **before** the output stream has
   * been written to. Otherwise the body would need to be buffered!
   *
   * For non-streaming requests with a body, headers must be prepared **after** the output stream
   * has been written to and closed. This ensures that the `Content-Length` header field receives
   * the proper value.
   */

```

Then in tests annotated `@org.junit.Test`, you may declare a field with the `@Rule` annotation:

```
@Rule public final MockWebServerRule serverRule = new MockWebServerRule();
```

The `serverRule` field has a `server` field. It is an instance of `MockWebServer`. That instance
will be shut down automatically after the test runs.

For Kotlin, the `@JvmField` annotation is also necessary:

```

        Please describe the problem as concisely as possible.
    validations:
      required: true
  - type: textarea
    id: context
    attributes:
      label: Context (optional)
      description: |
        How has this issue affected you? What are you trying to accomplish?
        Providing context helps us come up with a solution that is most useful in the real world
    validations:

## Container Images { #container-images }

Docker has been one of the main tools to create and manage **container images** and **containers**.

$(function() {
  $('input[type="text"],select,textarea', ".login-box,section.content")
    .first()
    .focus();
  $(".form-group .has-error")
    .first()
    .next("input,select,textarea")
    .focus();

  $("section.content input").keypress(function(e) {
    var $submitButton;
    if (e.which === 13) {
      $submitButton = $("input#submit, button#submit");
      if ($submitButton.length > 0) {
        $submitButton[0].submit();
      }

 */
package mockwebserver3

import okio.Socket

/**
 * Handles a call's request and response streams directly. Use this instead of [MockResponseBody] to
 * begin sending response data before all request data has been received.
 *
 * See [okhttp3.RequestBody.isDuplex].
 */
public interface SocketHandler {
  public fun handle(socket: Socket)

    _failedRoutes.add(failedRoute)
  }

  /** Records success connecting to [route]. */
  @Synchronized fun connected(route: Route) {
    _failedRoutes.remove(route)
  }

  /** Returns true if [route] has failed recently and should be avoided. */
  @Synchronized fun shouldPostpone(route: Route): Boolean = route in _failedRoutes

     *
     * @return The min score.
     */
    public Float getMinScore() {
        return null;
    }

    /**
     * Returns true if the request has a condition query, otherwise false.
     *
     * @return True if the request has a condition query, otherwise false.
     */
    public boolean hasConditionQuery() {
        final Map<String, String[]> conditions = getConditions();