import static org.junit.Assert.assertThat;

import java.net.URL;
import java.net.URLClassLoader;

import org.junit.Test;

/**
 * @author koichik
 */
public class ClassLoaderIteratorTest {

    /**
     * @throws Exception
     */
    @Test
    public void test() throws Exception {
        final ClassLoader cl1 = new URLClassLoader(new URL[] { new URL("file:/foo") }, null);

  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();

     */
    @Test
    public void testIsAncestor() throws Exception {
        final ClassLoader cl1 = new URLClassLoader(new URL[] { new URL("file:/foo") }, null);
        final ClassLoader cl2 = new URLClassLoader(new URL[] { new URL("file:/bar") }, cl1);
        final ClassLoader cl3 = new URLClassLoader(new URL[] { new URL("file:/baz") }, cl2);

        assertThat(ClassLoaderUtil.isAncestor(cl3, cl2), is(true));

    URLClassLoader sepLoader = new URLClassLoader(getClassPathUrls(), myLoader.getParent());
    // sepLoader is the loader that we will use to load the parallel FinalizableReferenceQueue (FRQ)
    // and friends, and that we will eventually expect to see garbage-collected. The assumption
    // is that the ClassLoader of this test is a URLClassLoader, and that it loads FRQ itself

  // cleared.
  @J2ktIncompatible
  @GwtIncompatible // weak references
  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);

  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();

    // 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);

        assertEquals(file, file2);
        final File junitJar = ResourceUtil.getBuildDir(TestCase.class);
        assertTrue(junitJar.exists());
        final URL url = junitJar.toURI().toURL();
        final URLClassLoader loader = new URLClassLoader(new URL[] { url });
        loader.loadClass(TestCase.class.getName());
    }

    /**
     * @throws Exception
     */
    public void testIsExist() throws Exception {

import com.google.common.base.internal.Finalizer;
import com.google.common.testing.GcFinalization;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Arrays;
import java.util.Collections;
import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Unit test for {@link FinalizableReferenceQueue}.
 *

    // 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);