import java.util.concurrent.CountDownLatch;
import java.util.concurrent.FutureTask;
import java.util.concurrent.atomic.AtomicInteger;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link AbstractService}.
 *
 * @author Jesse Wilson
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class AbstractServiceTest extends TestCase {

          <name>testResources</name>
          <version>4.0.0+</version>
          <description>
            This element describes all the classpath resources such as properties
            files associated with a project's unit tests.
            The default value is {@code src/test/resources}.

            @deprecated Replaced by {@code &lt;Source&gt;} with {@code test} scope and {@code resources} language.
          </description>

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

public class SearchEngineClientRebuildTest extends UnitFessTestCase {

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.mylasta.direction.FessProp;
import org.codelibs.fess.opensearch.config.exentity.CrawlingConfig.ConfigName;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

public class ParameterUtilTest extends UnitFessTestCase {

    @Override

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

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

import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;

          return null
        }

        override fun connectFailed(
          uri: URI,
          socketAddress: SocketAddress,
          e: IOException,
        ): Unit = throw AssertionError()
      }

    val address =
      factory.newAddress(
        proxySelector = nullProxySelector,
      )
    val routeSelector = newRouteSelector(address)

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);
    

import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

/**
 * Unit tests for the {@link InferenceStrategy} class.
 * Tests Maven 4.1.0+ inference optimizations including dependency and parent inference.
 */
@DisplayName("InferenceStrategy")
class InferenceStrategyTest {

import org.codelibs.fess.Constants;
import org.codelibs.fess.helper.JobHelper;
import org.codelibs.fess.helper.ProcessHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;
import org.lastaflute.di.exception.IORuntimeException;