public void testClassPathEntries_urlClassLoader_withParent() throws Exception {
    URL url1 = new URL("file:/a");
    URL url2 = new URL("file:/b");
    URLClassLoader parent = new URLClassLoader(new URL[] {url1}, null);
    URLClassLoader child = new URLClassLoader(new URL[] {url2}, parent) {};
    assertThat(ClassPath.getClassPathEntries(child))
        .containsExactly(new File("/a"), parent, new File("/b"), child)
        .inOrder();

  public void testClassPathEntries_urlClassLoader_withParent() throws Exception {
    URL url1 = new URL("file:/a");
    URL url2 = new URL("file:/b");
    URLClassLoader parent = new URLClassLoader(new URL[] {url1}, null);
    URLClassLoader child = new URLClassLoader(new URL[] {url2}, parent) {};
    assertThat(ClassPath.getClassPathEntries(child))
        .containsExactly(new File("/a"), parent, new File("/b"), child)
        .inOrder();

  // (and therefore its ClassLoader) from being unloaded, then this WeakReference will never be
  // cleared.
  @J2ktIncompatible
  private WeakReference<?> doTestClassUnloading() throws Exception {
    URLClassLoader shadowLoader = new URLClassLoader(getClassPathUrls(), null);
    @SuppressWarnings("unchecked")
    Class<TestEnum> shadowTestEnum =
        (Class<TestEnum>) Class.forName(TestEnum.class.getName(), false, shadowLoader);

import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertThrows;

import com.google.errorprone.annotations.concurrent.GuardedBy;
import java.lang.reflect.Method;
import java.net.URLClassLoader;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CancellationException;
import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

    // Now set the context loader to one that should find the resource.
    URL baseUrl = tempFile.getParentFile().toURI().toURL();
    URLClassLoader loader = new URLClassLoader(new URL[] {baseUrl});
    ClassLoader oldContextLoader = Thread.currentThread().getContextClassLoader();
    try {
      Thread.currentThread().setContextClassLoader(loader);

import java.lang.ref.Cleaner.Cleanable;
import java.lang.ref.Reference;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;
import java.net.ServerSocket;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;
import org.junit.After;
import org.junit.Test;

    URLClassLoader newLoader(URL base) {
      // We use the bootstrap class loader as the parent because Finalizer by design uses
      // only standard Java classes. That also means that FinalizableReferenceQueueTest
      // doesn't pick up the wrong version of the Finalizer class.
      return new URLClassLoader(new URL[] {base}, null);
    }
  }

  /**