void testInvalidConfiguration() {
        assertThrows(IllegalArgumentException.class, () -> new SimpleCircuitBreaker("invalid", 0, 2, 100));
        assertThrows(IllegalArgumentException.class, () -> new SimpleCircuitBreaker("invalid", 3, 0, 100));
        assertThrows(IllegalArgumentException.class, () -> new SimpleCircuitBreaker("invalid", 3, 2, -1));
    }

    @Test

import org.codelibs.fess.util.ComponentUtil;

import jakarta.annotation.PostConstruct;

/**
 * Helper class for label types.
 */
public class LabelTypeHelper extends AbstractConfigHelper {
    private static final Logger logger = LogManager.getLogger(LabelTypeHelper.class);

    /** A list of label type items. */
    protected volatile List<LabelTypeItem> labelTypeItemList;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * This class updates scores of documents.
 */
public class ScoreUpdater {
    /**
     * Constructor.
     */
    public ScoreUpdater() {
        super();
    }

    private static final Logger logger = LogManager.getLogger(ScoreUpdater.class);

    private final List<ScoreBooster> scoreBoosterList = new ArrayList<>();

    /**

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import java.io.IOException;
import java.io.OutputStream;

import org.junit.Test;

/**
 * @author shot
 */
public class CloseableUtilTest {

    /**
     * @throws Exception
     */
    @Test
    public void testClose() throws Exception {
        final NotifyOutputStream out = new NotifyOutputStream();

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

/**
 * Utility class for character-related operations.
 */
public final class CharUtil {
    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private CharUtil() {
    }

    /**
     * Checks if the given character is a valid URL character.
     *

import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.dbflute.utflute.core.PlainTestCase;

/**
 * @author shinsuke
 *
 */
public class MsWordExtractorTest extends PlainTestCase {
    private static final Logger logger = LogManager.getLogger(MsWordExtractorTest.class);

    public MsWordExtractor msWordExtractor;

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

 */
package org.codelibs.fess.suggest.normalizer;

import com.ibm.icu.text.Transliterator;

/**
 * ICUNormalizer is a class that implements the Normalizer interface and provides
 * functionality to normalize text using ICU4J's Transliterator.
 *
 * <p>This class uses a specified Transliterator to perform text normalization.
 * The Transliterator is initialized with a given ID during the construction of

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;

import org.junit.jupiter.api.Test;

/**
 * Tests for the PacSignature class.
 */
class PacSignatureTest {

    /**
     * Helper method to write integer in little-endian format.
     */
    private void writeLittleEndianInt(ByteArrayOutputStream baos, int value) {

 */

package jcifs.smb1.util;

/**
 * Utility class for Base64 encoding and decoding operations.
 * Provides methods to convert between binary data and Base64 encoded strings.
 */
public class Base64 {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private Base64() {
        // Utility class - not instantiable
    }

import org.junit.jupiter.api.Test;

import jcifs.smb1.util.Hexdump;

/**
 * Unit test for {@link Trans2QueryFSInformation}. The class contains mostly
 * trivial wire-format helpers and a custom {@code toString()} implementation.
 * All tests are pure unit tests – no network or file system access is
 * required.
 */
class Trans2QueryFSInformationTest {

    /** Small helper to create a byte buffer larger than the maximum expected