* either it got collected, or {@link #clear} was called, or it wasn't set in the first place).
     */
    @CheckForNull
    V get();

    /** Returns the entry which contains this {@link WeakValueReference}. */
    E getEntry();

    /** Unsets the referenced value. Subsequent calls to {@link #get} will return {@code null}. */
    void clear();

    /**

  }

  @Override
  public void clear() {
    if (!range.hasLowerBound() && !range.hasUpperBound()) {
      // We can do this in O(n) rather than removing one by one, which could force rebalancing.
      for (AvlNode<E> current = header.succ(); current != header; ) {
        AvlNode<E> next = current.succ();

        current.elemCount = 0;

    assertEquals(RemovalCause.REPLACED, notification.getCause());
    assertTrue(listener.isEmpty());

    // inactive
    Object value3 = new Object();
    map.clear();
    listener.clear();
    assertEquals(0, segment.count);
    table.set(index, entry);
    assertTrue(segment.storeLoadedValue(key, hash, valueRef, value3));
    assertSame(value3, segment.get(key, hash));

    assertEquals(RemovalCause.REPLACED, notification.getCause());
    assertTrue(listener.isEmpty());

    // inactive
    Object value3 = new Object();
    map.clear();
    listener.clear();
    assertEquals(0, segment.count);
    table.set(index, entry);
    assertTrue(segment.storeLoadedValue(key, hash, valueRef, value3));
    assertSame(value3, segment.get(key, hash));

 * #iterator()} method after the first, and whose iterator is always unmodifiable.
 *
 * <p>The {@code Iterable} specification does not make it absolutely clear what should happen on a
 * second invocation, so implementors have made various choices, including:
 *
 * <ul>
 *   <li>returning the same iterator again
 *   <li>throwing an exception of some kind

   * source created with some given bytes, this method would return a subsequence of the given
   * (byte[]) data.
   */
  T getExpected(T data);

  /** Cleans up anything created when creating the source or sink. */
  public abstract void tearDown() throws IOException;

  /** Factory for byte or char sources. */
  public interface SourceFactory<S, T> extends SourceSinkFactory<S, T> {

public class BoostDocPagerTest extends UnitFessTestCase {

    public void test_BoostDocPage() {
        BoostDocPager boostdocpager = new BoostDocPager();

        boostdocpager.clear();
        assertEquals(0, boostdocpager.getAllRecordCount());
        assertEquals(0, boostdocpager.getAllPageCount());
        assertEquals(false, boostdocpager.isExistPrePage());

public class CrawlingInfoPagerTest extends UnitFessTestCase {

    public void test_CrawlingInfoPage() {
        CrawlingInfoPager crawlinginfopage = new CrawlingInfoPager();

        crawlinginfopage.clear();
        assertEquals(0, crawlinginfopage.getAllRecordCount());
        assertEquals(0, crawlinginfopage.getAllPageCount());
        assertEquals(false, crawlinginfopage.isExistPrePage());

public class DuplicateHostPagerTest extends UnitFessTestCase {

    public void test_DuplicateHostPager() {
        DuplicateHostPager duplicatehostpager = new DuplicateHostPager();

        duplicatehostpager.clear();
        assertEquals(0, duplicatehostpager.getAllRecordCount());
        assertEquals(0, duplicatehostpager.getAllPageCount());
        assertEquals(false, duplicatehostpager.isExistPrePage());

  public final void runTearDown() {
    List<Throwable> exceptions = new ArrayList<>();
    List<TearDown> stackCopy;
    synchronized (lock) {
      stackCopy = Lists.newArrayList(stack);
      stack.clear();
    }
    for (TearDown tearDown : stackCopy) {
      try {
        tearDown.tearDown();
      } catch (Throwable t) {
        if (suppressThrows) {