void testConstructorWithStringInvalidCharacter() {
            // Arrange
            String invalidUuid = "00112233-4455-6677-8899-AABBCCDDEXX"; // 'X' is invalid

            // Act & Assert
            assertThrows(IllegalArgumentException.class, () -> new UUID(invalidUuid),

        void testSetResponseNull() {
            testRequest.setResponse(null);
            assertNull(testRequest.getResponse());
        }

        @Test
        @DisplayName("setResponse should throw exception for incompatible response")
        void testSetResponseIncompatible() {
            CommonServerMessageBlockResponse incompatibleResponse = mock(CommonServerMessageBlockResponse.class);

            providedArtifacts = coreExports.getExportedArtifacts();
        } else if (STRATEGY_SELF_FIRST.equals(classLoadingStrategy)) {
            realm.setParentRealm(parentRealm);
        } else {
            throw new IllegalArgumentException("Unsupported class-loading strategy '"
                    + classLoadingStrategy + "'. Supported values are: " + STRATEGY_PARENT_FIRST

   * {@code ClassCastException} for any elements {@code e1} and {@code e2} in the multiset. If the
   * user attempts to add an element to the multiset that violates this constraint (for example, the
   * user attempts to add a string element to a set whose elements are integers), the {@code
   * add(Object)} call will throw a {@code ClassCastException}.
   *

  }

  /** Returns a {@link CacheLoader} that throws the given error for every request. */
  static <K, V> CacheLoader<K, V> errorLoader(Error e) {
    checkNotNull(e);
    return new CacheLoader<K, V>() {
      @Override
      public V load(K key) {
        throw e;
      }
    };
  }

  /** Returns a {@link CacheLoader} that throws the given exception for every request. */

        for (String cron : potentiallyValidCrons) {
            boolean result = validator.isValid(cron, context);
            // Don't assert true/false here, just test that method doesn't throw
            assertNotNull(Boolean.valueOf(result), "Validation should return a boolean result for: " + cron);
        }
    }

    // Test edge cases to understand the validation behavior
    @Test

  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  public void testRemove_unsupportedNotPresent() {
    try {
      assertFalse(
          "remove(notPresent) should return false or throw UnsupportedOperationException",
          collection.remove(e3()));
    } catch (UnsupportedOperationException tolerated) {
    }
    expectUnchanged();
    expectMissing(e3());
  }

    assertThat(future.get()).isEqualTo(expected);
  }

  @J2ktIncompatible
  @GwtIncompatible
  public void testAsAsyncCallable_exception() throws Exception {
    Exception expected = new IllegalArgumentException();
    Callable<String> callable =
        () -> {
          throw expected;
        };

    AsyncCallable<String> asyncCallable =
        Callables.asAsyncCallable(callable, newDirectExecutorService());

    assertThat(future.get()).isEqualTo(expected);
  }

  @J2ktIncompatible
  @GwtIncompatible
  public void testAsAsyncCallable_exception() throws Exception {
    Exception expected = new IllegalArgumentException();
    Callable<String> callable =
        () -> {
          throw expected;
        };

    AsyncCallable<String> asyncCallable =
        Callables.asAsyncCallable(callable, newDirectExecutorService());

   * @throws Exception if unable to load the result
   * @throws InterruptedException if this method is interrupted. {@code InterruptedException} is
   *     treated like any other {@code Exception} in all respects except that, when it is caught,
   *     the thread's interrupted status is set
   */
  public abstract V load(K key) throws Exception;

  /**