searchers[0] = searcher;
    }

    /**
     * Registers a new searcher with the rank fusion processor.
     * Adds the searcher to the searchers array and initializes the executor service
     * if it hasn't been created yet. The executor service is created with a thread pool
     * sized based on configuration or system capabilities.
     *
     * @param searcher the RankFusionSearcher to register
     */

        assertNull(exception.getCause());
    }

    public void test_constructor_withEmptyUsername() {
        // Test with empty username
        String username = "";
        FessUserNotFoundException exception = new FessUserNotFoundException(username);

        assertNotNull(exception);
        assertEquals("User is not found: ", exception.getMessage());

   *   <li>If {@code exceptions} has a single exception and that exception is a {@link
   *       RuntimeException}, return it
   *   <li>If {@code exceptions} has a single exceptions and that exceptions is not a
   *       {@link RuntimeException}, return a simple {@code RuntimeException} that wraps it
   *   <li>Otherwise, return an instance of {@link ClusterException} that wraps the first exception
   *       in the {@code exceptions} collection.

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.exception;

import org.codelibs.fess.mylasta.action.FessMessages;
import org.lastaflute.web.validation.VaMessenger;

/**
 * Exception thrown during SSO (Single Sign-On) processing with message code support.
 *
 * This exception is used to indicate errors that occur during SSO authentication

import junit.framework.TestCase;

import org.junit.Test;

/**
 * @author koichik
 */
public class ClassLoaderUtilTest {

    /**
     * @throws Exception
     */
    @Test
    public void testGetClassLoader() throws Exception {
        assertThat(ClassLoaderUtil.getClassLoader(Object.class), is(sameInstance(ClassLoaderUtil.class.getClassLoader())));

        assertSame(session, result);
        verify(transport).getSmbSession(eq(ctx), eq(host), eq(domain));
    }

    // SMB2 detection: true/false and exception path
    @Test
    @DisplayName("isSMB2 returns true/false and can throw")
    void isSMB2_variants() throws Exception {
        when(transport.isSMB2()).thenReturn(true, false);
        assertTrue(transport.isSMB2());
        assertFalse(transport.isSMB2());

        validator = new ServerResponseValidator();
    }

    @Test
    public void testValidBuffer() throws Exception {
        byte[] buffer = new byte[1024];
        validator.validateBuffer(buffer, 100, 2048);
        // Should pass without exception
    }

    @Test
    public void testNullBuffer() throws Exception {
        assertThrows(SmbException.class, () -> {
            validator.validateBuffer(null, 100, 1024);

     * parameter, or if the constructor or factory method throws exception.
     *
     * @return this tester
     */
    @CanIgnoreReturnValue
    @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
    public FactoryMethodReturnValueTester testSerializable() throws Exception {
      for (Invokable<?, ?> factory : getFactoriesToTest()) {
        Object instance = instantiate(factory);

            @Override
            public Integer call() throws Exception {
              runLatch.countDown();
              taskLatch.await();
              if (throwException) {
                throw new IllegalStateException("Fail");
              }
              return 25;
            }
          });

  @Override
  protected void setUp() throws Exception {
    super.setUp();

    exec = newCachedThreadPool();

    }

    /**
     * @throws Exception
     */
    @Test
    public void testTimeConverter() throws Exception {
        assertThat(new CopyOptions().timeConverter("ss").convertValue(new java.sql.Time(0), "aaa", String.class), is((Object) "00"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testTimestampConverter() throws Exception {