assertNotNull(result);
        assertTrue(result.contains("Test exception"));
        assertFalse(result.contains("documents"));
    }

    // Test query() method
    @Test
    public void test_query() {
        QueryBuilder queryBuilder = QueryBuilders.matchAllQuery();
        UpdateLabelJob returnedJob = updateLabelJob.query(queryBuilder);

        assertSame(updateLabelJob, returnedJob); // Method chaining

import org.codelibs.fess.unit.UnitFessTestCase;
import org.junit.jupiter.api.Test;

public class QueryStringBuilderTest extends UnitFessTestCase {

    @Test
    public void test_query() {
        assertEquals("", getQuery("", new String[0], Collections.emptyMap(), Collections.emptyMap(), false));
    }

    @Test
    public void test_conditions_q() {
        final String k = "q";

	<include path="fess.xml"/>
	<include path="fess_api.xml"/>
	<include path="fess_cors.xml"/>
	<include path="fess_dict.xml"/>
	<include path="fess_job.xml"/>
	<include path="fess_ldap.xml"/>
	<include path="fess_query.xml"/>
	<include path="fess_rankfusion.xml"/>
	<include path="fess_score.xml"/>
	<include path="fess_sso.xml"/>
	<include path="fess_thumbnail.xml"/>

	<include path="crawler/client.xml" />

            return QueryBuilders.matchAllQuery();
        }

        @Override
        protected String getQueryClassName() {
            return "TestQuery";
        }

        // Expose protected methods for testing
        @Override
        public boolean isSearchField(String field) {
            return super.isSearchField(field);
        }