import org.codelibs.fess.Constants;
import org.codelibs.fess.exception.JobProcessingException;
import org.codelibs.fess.helper.ProcessHelper;
import org.codelibs.fess.mylasta.direction.FessConfig;

import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.fess.util.InputStreamThread;
import org.codelibs.fess.util.JobProcess;
import org.codelibs.fess.util.SystemUtil;

import java.io.IOException;
import java.util.concurrent.atomic.AtomicBoolean;

import org.codelibs.fess.api.WebApiManager;
import org.codelibs.fess.api.WebApiManagerFactory;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;

import jakarta.servlet.FilterChain;
import jakarta.servlet.FilterConfig;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;

import org.codelibs.fess.exception.PluginException;
import org.codelibs.fess.helper.PluginHelper.Artifact;
import org.codelibs.fess.helper.PluginHelper.ArtifactType;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.lastaflute.di.exception.IORuntimeException;

public class PluginHelperTest extends UnitFessTestCase {
    private PluginHelper pluginHelper;

    @Override

 */
package org.codelibs.fess.thumbnail.impl;

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import org.codelibs.fess.unit.UnitFessTestCase;

public class CommandGeneratorTest extends UnitFessTestCase {

    private CommandGenerator generator;

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

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

/**
 * Unit tests for ServerData class
 */
public class ServerDataTest {

    private ServerData serverData;

    @BeforeEach
    public void setUp() {
        serverData = new ServerData();
    }

    /**

 */
package org.codelibs.fess.util;

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

import org.codelibs.fess.exception.FessSystemException;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

public class PrunedTagTest extends UnitFessTestCase {

    public void test_hashCode() {
        PrunedTag prunedtag = new PrunedTag("tag");

import java.lang.annotation.Target;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.validation.UriTypeValidator.ProtocolType;

import jakarta.validation.Constraint;
import jakarta.validation.Payload;

public class UriTypeTest extends UnitFessTestCase {

import org.codelibs.fess.entity.SearchRequestParams.SearchRequestType;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.query.QueryFieldConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.web.servlet.request.SimpleRequestManager;

import jakarta.servlet.http.HttpServletRequest;

import java.util.Comparator;
import java.util.List;
import java.util.regex.Pattern;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link Doubles}.
 *
 * @author Kevin Bourrillion
 */
@NullMarked
@GwtCompatible
public class DoublesTest extends TestCase {
  private static final double[] EMPTY = {};

                    entry.invalidate();
                }
                invalidateChildren(child);  // Recursive
            }
        }
    }
}
```

## 8. Testing Strategy

### 8.1 Unit Tests
```java
@Test
public void testDirectoryCacheEntry() {
    DirectoryCacheEntry entry = new DirectoryCacheEntry(
        "/test/dir", new Smb2LeaseKey(), DirectoryCacheScope.IMMEDIATE_CHILDREN);