// Execute
        authenticator.parseJwtClaim(jwtClaim, attributes);

        // Verify
        assertEquals("1234567890", attributes.get("sub"));
        assertEquals("John Doe", attributes.get("name"));

        // Check groups array
        final String[] groups = DocumentUtil.getValue(attributes, "groups", String[].class);

        // Test with empty groups
        groups = new String[] {};
        user = new TestFessUser("testuser", new String[] {}, groups, new String[] {});
        assertArrayEquals(groups, user.getGroupNames());

        // Test with null groups
        user = new TestFessUser("testuser", new String[] {}, null, new String[] {});
        assertNull(user.getGroupNames());

        // Test with groups containing spaces

        User user = new User();
        user.setName(username);
        user.setPassword(password);
        user.setRoles(new String[] { "role1", "role2" });
        user.setGroups(new String[] { "group1", "group2" });
        return user;
    }

    // Test LdapManager implementation
    private static class TestLdapManager extends LdapManager {
        boolean insertCalled = false;

        assertNotNull(groupNames);
        assertEquals(2, groupNames.length);
        assertEquals("group1", groupNames[0]);
        assertEquals("group2", groupNames[1]);
    }

    public void test_getGroupNames_empty() {
        // Test when no groups match the prefix
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            @Override

package org.codelibs.fess.opensearch.user.exentity;

import java.util.HashMap;
import java.util.Map;

import org.codelibs.fess.opensearch.user.bsentity.BsGroup;

/**
 * @author FreeGen
 */
public class Group extends BsGroup {

    private static final long serialVersionUID = 1L;

    private Map<String, String> attributes;

    public Long getVersionNo() {
        return asDocMeta().version();
    }

import org.codelibs.fess.opensearch.user.bsentity.dbmeta.GroupDbm;
import org.codelibs.fess.opensearch.user.cbean.GroupCB;
import org.codelibs.fess.opensearch.user.cbean.ca.GroupCA;
import org.codelibs.fess.opensearch.user.cbean.ca.bs.BsGroupCA;
import org.codelibs.fess.opensearch.user.cbean.cq.GroupCQ;
import org.codelibs.fess.opensearch.user.cbean.cq.bs.BsGroupCQ;
import org.dbflute.cbean.ConditionQuery;

        });

    }

    /**
     * Deletes a group from both LDAP and the database, and removes the group
     * association from all users that belong to this group.
     *
     * @param group the group entity to delete
     */
    public void delete(final Group group) {
        ComponentUtil.getLdapManager().delete(group);

        groupBhv.delete(group, op -> {
            op.setRefreshPolicy(Constants.TRUE);

 */
package org.codelibs.fess.opensearch.user.cbean.cq;

import org.codelibs.fess.opensearch.user.cbean.cq.bs.BsGroupCQ;

/**
 * @author ESFlute (using FreeGen)
 */
public class GroupCQ extends BsGroupCQ {

 */
package org.codelibs.fess.opensearch.user.cbean;

import org.codelibs.fess.opensearch.user.cbean.bs.BsGroupCB;

/**
 * @author ESFlute (using FreeGen)
 */
public class GroupCB extends BsGroupCB {

 */
package org.codelibs.fess.opensearch.user.cbean.ca;

import org.codelibs.fess.opensearch.user.cbean.ca.bs.BsGroupCA;

/**
 * @author ESFlute (using FreeGen)
 */
public class GroupCA extends BsGroupCA {