(k, v) -> {
                  assertEquals(k3(), k);
                  assertNull(v);
                  return v3();
                }));
    expectAdded(e3());
    assertEquals(getNumElements() + 1, getMap().size());
  }

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testCompute_absentToAbsent() {
    assertNull(
        "Map.compute(absent, functionReturningNull) should return null",

                (k, v) -> {
                  assertEquals(k3(), k);
                  assertNull(v);
                  return v3();
                }));
    expectAdded(e3());
    assertEquals(getNumElements() + 1, getMap().size());
  }

  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testCompute_absentToAbsent() {
    assertNull(
        "Map.compute(absent, functionReturningNull) should return null",

        assertNotNull(exception);
        assertEquals("Not Found: http://example.com/child Parent: http://example.com/parent", exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withNullParentUrl() {
        // Test with null parent URL
        String parentUrl = null;
        String url = "http://example.com/child";

        final StorageItem item = new StorageItem(null, null, false, 0L, null, null);

        assertNull(item.getName());
        assertNull(item.getPath());
        assertFalse(item.isDirectory());
        assertEquals(0L, item.getSize());
        assertNull(item.getLastModified());
        assertNull(item.getEncodedId());
    }

    public void test_emptyName() {

    assertEquals("get(present) should return the associated value", v0(), get(k0()));
  }

  public void testGet_no() {
    assertNull("get(notPresent) should return null", get(k3()));
  }

  @MapFeature.Require(ALLOWS_NULL_KEY_QUERIES)
  public void testGet_nullNotContainedButAllowed() {
    assertNull("get(null) should return null", get(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)

        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 = "";

        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withEmptyMessage() {
        // Test with empty message
        String message = "";
        UnsupportedSearchException exception = new UnsupportedSearchException(message);

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

    @Test

        final ActionForm form = new ActionForm();
        assertNull(form.replaceAliases);
        assertNull(form.resetDictionaries);
        // numberOfShardsForDoc and autoExpandReplicasForDoc have defaults from FessConfig
        assertNotNull(form.numberOfShardsForDoc);
        assertNotNull(form.autoExpandReplicasForDoc);
        assertNull(form.loadBulkData);
        // rebuildConfigIndex defaults to Constants.ON

        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);

  @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)