public void testNullTimeUnit() throws Exception {
    future.set(1);
    assertThrows(NullPointerException.class, () -> future.get(0, null));
  }

  public void testNegativeTimeout() throws Exception {
    future.set(1);
    assertEquals(1, future.get(-1, SECONDS).intValue());
  }

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testOverflowTimeout() throws Exception {

            }

            // Verify thread safety - no unexpected exceptions
            assertEquals(0, exceptionCount.get(), "Should not have unexpected exceptions");

            // At least some threads should complete successfully
            assertTrue(successfulThreads.get() > 0, "At least some threads should complete successfully");

            // The rate limiter should still be functional after concurrent access

```Python
response = requests.get("http://example.com/some/url")
```

Die entsprechende *Pfadoperation* der FastAPI-API könnte wie folgt aussehen:

```Python hl_lines="1"
@app.get("/some/url")
def read_url():
    return {"message": "Hello World"}

        return (AccessTokenCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    // ===================================================================================
    //                                                                               Build

        return (FailureUrlCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    // ===================================================================================
    //                                                                               Build

        return (RelatedContentCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    // ===================================================================================
    //                                                                               Build

    keyManagerFactory.init(KeyStoreBuilderParameters(builderList))
    val keyManager = keyManagerFactory.keyManagers[0] as X509ExtendedKeyManager

    val trustManager = Platform.get().platformTrustManager()

    val sslContext = SSLContext.getInstance("TLS")
    sslContext.init(arrayOf(keyManager), arrayOf(trustManager), SecureRandom())

    val client =
      OkHttpClient
        .Builder()

            sb.append(LS);
        }
        sb.append("</table>");
        return sb.toString();
    }

    @Test
    void testOptionsAsHtml() throws IOException {
        Path options = Paths.get("target/test-classes/options.html");
        Files.writeString(options, getOptionsAsHtml(), StandardCharsets.UTF_8);
    }

Ardından app ile bir `AsyncClient` oluşturup `await` kullanarak ona async request'ler gönderebiliriz.

{* ../../docs_src/async_tests/app_a_py310/test_main.py hl[9:12] *}

Bu, şu kullanıma denktir:

```Python
response = client.get('/')
```

...ki daha önce request'leri `TestClient` ile bu şekilde gönderiyorduk.

/// tip | İpucu

Yeni `AsyncClient` ile async/await kullandığımızı unutmayın; request asenkron çalışır.

///

        return (ScheduledJobCB) this;
    }

    @Override
    public void acceptPrimaryKeyMap(Map<String, ? extends Object> primaryKeyMap) {
        acceptPK((String) primaryKeyMap.get("_id"));
    }

    // ===================================================================================
    //                                                                               Build