# WebSockets testen

Sie können den schon bekannten `TestClient` zum Testen von WebSockets verwenden.

Dazu verwenden Sie den `TestClient` in einer `with`-Anweisung, eine Verbindung zum WebSocket herstellend:

{* ../../docs_src/app_testing/tutorial002.py hl[27:31] *}

/// note | Hinweis

name: Failing Test
description: Report continuously failing tests or jobs in Kubernetes CI
labels: kind/failing-test
body:
  - type: textarea
    id: jobs
    attributes:
      label: Which jobs are failing?
      placeholder: |
        Please only use this template for submitting reports about continuously failing tests or jobs in Kubernetes CI.
    validations:
      required: true

  - type: textarea
    id: tests
    attributes:

      "colour": "#43952A",
      "description": "has pull request"
    },
    "not_tested": {
      "name": "type:not tested",
      "colour": "#CF2E1F",
      "description": "not tested"
    },
    "tested": {
      "name": "type:tested",
      "colour": "#00ff00",
      "description": "tested"
    },
    "breaking_change": {
      "name": "type:breaking change",
      "colour": "#CF2E1F",

  public void testNullEqualityGroup() {
    EqualsTester tester = new EqualsTester();
    assertThrows(NullPointerException.class, () -> tester.addEqualityGroup((Object[]) null));
  }

  public void testNullObjectInEqualityGroup() {
    EqualsTester tester = new EqualsTester();
    NullPointerException e =
        assertThrows(NullPointerException.class, () -> tester.addEqualityGroup(1, null, 3));

          func.hashString(input, UTF_8).toString());
    }
  }

  public void testNullPointers() {
    NullPointerTester tester =
        new NullPointerTester()
            .setDefault(byte[].class, "secret key".getBytes(UTF_8))
            .setDefault(HashCode.class, HashCode.fromLong(0));
    tester.testAllPublicStaticMethods(Hashing.class);
  }

  public void testSeedlessHashFunctionEquals() throws Exception {

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 {

  private final ForwardingWrapperTester tester = new ForwardingWrapperTester();

  public void testGoodForwarder() {
    tester.testForwarding(
        Arithmetic.class,

  }

  public void testChecksForNull() throws Exception {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicInstanceMethods(
        new HashingOutputStream(Hashing.md5(), new ByteArrayOutputStream()));
    tester.testAllPublicStaticMethods(HashingOutputStream.class);
    tester.testAllPublicConstructors(HashingOutputStream.class);
  }

* `swagger_js_url`: a URL onde a página HTML para a sua documentação do Swagger UI pode obter o arquivo **JavaScript**. Este é o URL do CDN personalizado.
* `swagger_css_url`: a URL onde a página HTML para a sua documentação do Swagger UI pode obter o arquivo **CSS**. Este é o URL do CDN personalizado.

E de forma semelhante para o ReDoc...

{* ../../docs_src/custom_docs_ui/tutorial001.py hl[2:6,11:19,22:24,27:33] *}

Met **FastAPI** krijg je alle functies van **Starlette** (FastAPI is gewoon Starlette op steroïden):

* Zeer indrukwekkende prestaties. Het is <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">een van de snelste Python frameworks, vergelijkbaar met **NodeJS** en **Go**</a>.

    validations:
      required: true

  - type: textarea
    id: tests
    attributes:
      label: Which tests are flaking?
    validations:
      required: true

  - type: textarea
    id: since
    attributes:
      label: Since when has it been flaking?
    validations: