assertThrows(NullPointerException.class, () -> keys.toArray((Object[]) null));
      checkEmpty(cache);
    }
  }

  public void testKeySet_addNotSupported() {
    for (LoadingCache<Object, Object> cache : caches()) {
      assertThrows(UnsupportedOperationException.class, () -> cache.asMap().keySet().add(1));

      assertThrows(

import jcifs.Credentials;

@ExtendWith(MockitoExtension.class)
class CredentialsInternalTest {

    @Mock
    CIFSContext mockContext;

    /**
     * Simple in-test implementation of CredentialsInternal to exercise the API surface.
     * It validates inputs, records calls, and delegates some behavior to collaborators
     * so we can verify interactions.
     */
    static class TestCredentials implements CredentialsInternal {

  }

  @SuppressWarnings("rawtypes") // class literals
  @Override
  protected List<Class<? extends AbstractTester>> getTesters() {
    List<Class<? extends AbstractTester>> testers = new ArrayList<>();
    testers.add(BiMapEntrySetTester.class);
    testers.add(BiMapPutTester.class);
    testers.add(BiMapInverseTester.class);
    testers.add(BiMapRemoveTester.class);
    testers.add(BiMapClearTester.class);
    return testers;

     * <p>
     * Shortcut for {@code getService(TypeRegistry.class).require(...)}.
     *
     * @see org.apache.maven.api.services.TypeRegistry#require(String)
     */
    @Nonnull
    Type requireType(@Nonnull String id);

    /**
     * Obtain the {@link Language} from the specified {@code id}.
     * <p>
     * Shortcut for {@code getService(LanguageRegistry.class).require(...)}.
     *

            return redirect(ErrorAction.class);
        }
        final String url = DocumentUtil.getValue(doc, fessConfig.getIndexFieldUrl(), String.class);
        if (url == null) {
            saveError(messages -> messages.addErrorsDocumentNotFound(GLOBAL, form.docId));
            return redirect(ErrorAction.class);
        }

        if (fessConfig.isSearchLog()) {

    future.cancel(true);
    assertThrows(CancellationException.class, () -> getUnchecked(future));
  }

  public void testGetUnchecked_executionExceptionChecked() {
    UncheckedExecutionException expected =
        assertThrows(
            UncheckedExecutionException.class, () -> getUnchecked(FAILED_FUTURE_CHECKED_EXCEPTION));
    assertThat(expected).hasCauseThat().isEqualTo(CHECKED_EXCEPTION);

    future.cancel(true);
    assertThrows(CancellationException.class, () -> getUnchecked(future));
  }

  public void testGetUnchecked_executionExceptionChecked() {
    UncheckedExecutionException expected =
        assertThrows(
            UncheckedExecutionException.class, () -> getUnchecked(FAILED_FUTURE_CHECKED_EXCEPTION));
    assertThat(expected).hasCauseThat().isEqualTo(CHECKED_EXCEPTION);

                .singleton("compressorStreamFactory", CompressorStreamFactory.class)
                .singleton("mimeTypeHelper", MimeTypeHelperImpl.class)
                .singleton("tikaExtractor", TikaExtractor.class)
                .singleton("zipExtractor", ZipExtractor.class)
                .<ExtractorFactory> singleton("extractorFactory", ExtractorFactory.class, factory -> {

    }

    @Test
    @DisplayName("Interface cannot be instantiated")
    @SuppressWarnings("deprecation") // Using Class#newInstance for explicit InstantiationException
    void cannotInstantiateInterface() {
        assertThrows(InstantiationException.class, () -> SpnegoConstants.class.newInstance(), "Interfaces cannot be instantiated");
    }

/**
 * Generators of various {@link com.google.common.collect.BiMap}s and derived collections.
 *
 * @author Jared Levy
 * @author Hayward Chan
 */
@GwtCompatible
@NullMarked
public class BiMapGenerators {
  public static class ImmutableBiMapGenerator extends TestStringBiMapGenerator {
    @Override
    protected BiMap<String, String> create(Entry<String, String>[] entries) {