public class QueueElementTester<E> extends AbstractQueueTester<E> {
  @CollectionSize.Require(ZERO)
  public void testElement_empty() {
    assertThrows(NoSuchElementException.class, () -> getQueue().element());
    expectUnchanged();
  }

  @CollectionSize.Require(ONE)
  public void testElement_size1() {
    assertEquals("size1Queue.element() should return first element", e0(), getQueue().element());

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class QueuePeekTester<E> extends AbstractQueueTester<E> {
  @CollectionSize.Require(ZERO)
  public void testPeek_empty() {
    assertNull("emptyQueue.peek() should return null", getQueue().peek());
    expectUnchanged();
  }

  @CollectionSize.Require(ONE)
  public void testPeek_size1() {
    assertEquals("size1Queue.peek() should return first element", e0(), getQueue().peek());
    expectUnchanged();
  }

  @CollectionFeature.Require(SUPPORTS_ADD)
  @CollectionSize.Require(absent = ZERO)
  public void testAddAll_supportedSomePresent() {
    assertTrue(
        "add(somePresent) should return true", getSet().addAll(MinimalCollection.of(e3(), e0())));
    expectAdded(e3());
  }

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testAddAll_withDuplicates() {

  public void testForwarding() {
    ForwardingObjectTester.testForwardingObject(ForwardingExecutorService.class);
  }

  public void testNoForwardingOfDefaultMethod() throws Exception {
    ExecutorService delegate =
        new ThreadPoolExecutor(0, Integer.MAX_VALUE, 60, SECONDS, new SynchronousQueue<>()) {
          @Override
          public void close() {
            throw new AssertionError(

    /**
     * Test parsing with an unknown auth type.
     * Expects an empty list of authorizations.
     * @throws PACDecodingException should not be thrown
     */
    @Test
    void testParseUnknownAuthType() throws PACDecodingException {
        // GIVEN an unknown auth type
        int unknownAuthType = -1;
        byte[] emptyToken = new byte[0];

        // WHEN parsing the auth data

            }
        }
    }

    @Override
    public void transformForInstall(Artifact artifact, ArtifactRepository localRepository) {
        // metadata is added via addPluginArtifactMetadata
    }

    @Override
    public void transformForDeployment(
            Artifact artifact, ArtifactRepository remoteRepository, ArtifactRepository localRepository) {

      assertTrue(Thread.holdsLock(mutex));
      return delegate.toArray(array);
    }

    @Override
    public void addFirst(E e) {
      assertTrue(Thread.holdsLock(mutex));
      delegate.addFirst(e);
    }

    @Override
    public void addLast(E e) {
      assertTrue(Thread.holdsLock(mutex));
      delegate.addLast(e);
    }

    @Override

     */
    @Test
    public void testEmptyIterator() {
        final EmptyIterator<String> emptyIterator = new EmptyIterator<String>();
        assertThat(emptyIterator, is(notNullValue()));
    }

    /**
     * Test method for {@link org.codelibs.core.collection.EmptyIterator#remove()}
     * .
     */
    @Test
    public void testRemove() {

    }
    return value;
  }

  static void checkPositive(int value, String name) {
    if (value <= 0) {
      throw new IllegalArgumentException(name + " must be positive but was: " + value);
    }
  }

  /**
   * Precondition tester for {@code Iterator.remove()} that throws an exception with a consistent
   * error message.
   */
  static void checkRemove(boolean canRemove) {

import org.junit.Test;

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

    /**
     * @throws Exception
     */
    @Test
    public void test() throws Exception {
        final ClassIterator it = new ClassIterator(Integer.class);
        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is(sameClass(Integer.class)));