@CollectionSize.Require(ZERO)
  public void testEmptySetPollFirst() {
    assertNull(navigableSet.pollFirst());
  }

  @CollectionSize.Require(ZERO)
  public void testEmptySetNearby() {
    assertNull(navigableSet.lower(e0()));
    assertNull(navigableSet.floor(e0()));
    assertNull(navigableSet.ceiling(e0()));
    assertNull(navigableSet.higher(e0()));
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)

        assertEquals(expectedStatus, ex.getNtStatus(), "status should map based on code");
        assertNull(ex.getCause(), "cause must be null for int constructor");
        assertNull(ex.getRootCause(), "rootCause must be null for int constructor");
    }

    /**
     * Validate message-only constructor with both null and empty messages.
     */

        assertEquals(25, accesstokenpager.getPageSize());
        assertEquals(1, accesstokenpager.getCurrentPageNumber());
        assertNull(accesstokenpager.id);
        assertNull(accesstokenpager.name);
        assertNull(accesstokenpager.createdBy);
        assertNull(accesstokenpager.createdTime);
        assertNull(accesstokenpager.versionNo);

        accesstokenpager.setAllRecordCount(999);

        ContainerNotAvailableException exception = new ContainerNotAvailableException((String) null);

        assertEquals("null is not available.", exception.getMessage());
        assertNull(exception.getCause());
        assertNull(exception.getComponentName());
    }

    @Test
    public void test_constructor_withEmptyComponentName() {
        // Test constructor with empty component name
        String componentName = "";

    @Test
    public void test_getConfigType() {
        assertNull(crawlingConfigHelper.getConfigType(null));
        assertNull(crawlingConfigHelper.getConfigType(""));
        assertNull(crawlingConfigHelper.getConfigType("XXX"));
        assertNull(crawlingConfigHelper.getConfigType("W"));
        assertNull(crawlingConfigHelper.getConfigType("F"));
        assertNull(crawlingConfigHelper.getConfigType("D"));

            // If JAAS is not configured and getSubject() returns null, verify cloning still works
            assertNull(first, "First call to getSubject() returned null - JAAS not configured");

            // Clone should also return null for getSubject() calls
            Subject copySubj = copy.getSubject();
            assertNull(copySubj, "Clone should also return null when original has null cached subject");

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNullMessage() {
        // Test with null message
        LdapConfigurationException exception = new LdapConfigurationException(null);

        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test

    }

    @Test
    public void test_responseData_defaultValues() {
        final ResponseData responseData = new ResponseData();

        assertNull(responseData.getUrl());
        assertNull(responseData.getMimeType());
        assertNull(responseData.getCharSet());
        assertEquals(0, responseData.getHttpStatusCode());
        assertEquals(0, responseData.getContentLength());
    }

    @Test

        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructorWithNullMessageAndCause() {
        // Test constructor with null message and null cause
        ThumbnailGenerationException exception = new ThumbnailGenerationException(null, null);

        assertNull(exception.getMessage());

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class MapComputeIfPresentTester<K, V> extends AbstractMapTester<K, V> {

  @MapFeature.Require(SUPPORTS_PUT)
  public void testComputeIfPresent_supportedAbsent() {
    assertNull(
        "computeIfPresent(notPresent, function) should return null",
        getMap()
            .computeIfPresent(
                k3(),
                (k, v) -> {
                  throw new AssertionFailedError();