testFessConfig.ldapAdminSyncPassword = false;

        boolean result = ldapChain.changePassword("testuser", "newpassword");

        assertFalse(result); // returns !changed || syncPassword = !true || false = false
        assertEquals("testuser", testLdapManager.changePasswordUsername);
        assertEquals("newpassword", testLdapManager.changePasswordPassword);

    public void test_constructor_withValidUsername() {
        // Test with a normal username
        String username = "testuser";
        FessUserNotFoundException exception = new FessUserNotFoundException(username);

        assertNotNull(exception);
        assertEquals("User is not found: testuser", exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_constructor_withEmptyUsername() {

import java.io.Serializable;

/**
 * Interface representing a Fess user with authentication and authorization information.
 * Provides access to user name, roles, groups, and permissions.
 */
public interface FessUser extends Serializable {

    /**
     * Gets the user's display name.
     * @return The user's name.
     */
    String getName();

    /**
     * Gets the user's assigned role names.

import static org.codelibs.core.stream.StreamUtil.stream;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.entity.FessUser;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.DocumentUtil;
import org.lastaflute.web.login.credential.LoginCredential;

/**

     * @return The Azure AD user instance.
     */
    public AzureAdUser getUser() {
        return new AzureAdUser(authResult);
    }

    /**
     * Azure AD user implementation providing user information and permissions.
     */
    public static class AzureAdUser implements FessUser {
        private static final long serialVersionUID = 1L;

        /** User's group memberships. */

import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.entity.FessUser;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.saml2.Auth;

 */
package org.codelibs.fess.mylasta.action;

import static org.codelibs.core.stream.StreamUtil.stream;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.entity.FessUser;
import org.lastaflute.web.login.TypicalUserBean;

/**
 * The user bean for Fess.
 *
 * @author jflute
 */
public class FessUserBean extends TypicalUserBean<String> { // #change_it also LoginAssist

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.entity.FessUser;
import org.codelibs.fess.mylasta.action.FessUserBean;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalThing;

/**
 * An LDAP user.
 */
public class LdapUser implements FessUser {

    private static final long serialVersionUID = 1L;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.api.admin.user;

import static org.codelibs.fess.app.web.admin.user.AdminUserAction.getUser;
import static org.codelibs.fess.app.web.admin.user.AdminUserAction.validateAttributes;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;

 */
@GwtCompatible
@NullUnmarked
public class EquivalenceTesterTest extends TestCase {
  private EquivalenceTester<Object> tester;
  private MockEquivalence equivalenceMock;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    this.equivalenceMock = new MockEquivalence();
    this.tester = EquivalenceTester.of(equivalenceMock);
  }

  /** Test null reference yields error */