private static <E> Iterator<E> asIterator(E... elements) {
    return asList(elements).iterator();
  }

  // In GWT, java.util.TreeSet throws ClassCastException when the comparator
  // throws it, unlike the JDK.  Therefore, we accept ClassCastException as a
  // valid result thrown by java.util.TreeSet#equals.
  private static void assertNotEqualLenient(TreeSet<?> unexpected, SortedSet<?> actual) {
    try {

     * This allows Maven 4 API to properly resolve the project hierarchy.
     */
    private Path createTempProjectStructure(UpgradeContext context, Map<Path, Document> pomMap) throws Exception {
        Path tempDir = Files.createTempDirectory("mvnup-project-");
        context.debug("Created temp project directory: " + tempDir);

        HashMap.class,
        Appendable.class,
        StringBuilder.class,
        StringBuffer.class,
        Throwable.class,
        Exception.class);
  }

  public void testGet_io() throws IOException {
    assertEquals(-1, ArbitraryInstances.get(InputStream.class).read());
    assertEquals(-1, ArbitraryInstances.get(ByteArrayInputStream.class).read());

  private EqualsTester equalsTester;
  private ValidTestObject equalObject1;
  private ValidTestObject equalObject2;
  private ValidTestObject notEqualObject1;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    reference = new ValidTestObject(1, 2);
    equalsTester = new EqualsTester();
    equalObject1 = new ValidTestObject(1, 2);
    equalObject2 = new ValidTestObject(1, 2);

   * @throws IllegalArgumentException if the object was not previously registered.
   */
  public void unregister(Object object) {
    subscribers.unregister(object);
  }

  /**
   * Posts an event to all registered subscribers. This method will return successfully after the
   * event has been posted to all subscribers, and regardless of any exceptions thrown by
   * subscribers.
   *

   * @param count the number of times to repeat it; a nonnegative integer
   * @return a string containing {@code string} repeated {@code count} times (the empty string if
   *     {@code count} is zero)
   * @throws IllegalArgumentException if {@code count} is negative
   */
  public static String repeat(String string, int count) {
    checkNotNull(string); // eager for GWT.

    if (count <= 1) {

    private CrawlerStatsHelper crawlerStatsHelper;

    private ThreadLocal<String> localLogMsg = new ThreadLocal<>();

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        ComponentUtil.register(new SystemHelper(), "systemHelper");
        crawlerStatsHelper = new CrawlerStatsHelper() {
            @Override

import org.junit.jupiter.api.TestInfo;

public class SuggestHelperTest extends UnitFessTestCase {

    private SuggestHelper suggestHelper;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        suggestHelper = new SuggestHelper();
        setupMockComponents();
    }

    private void setupMockComponents() {

     *     q-quantiles; the order of the indexes is unimportant, duplicates will be ignored, and the
     *     set will be snapshotted when this method is called
     * @throws IllegalArgumentException if {@code indexes} is empty
     */
    public ScaleAndIndexes indexes(int... indexes) {
      return new ScaleAndIndexes(scale, indexes.clone());
    }

    /**

     *
     * @param queryContext the query context containing the query string
     * @param context a consumer for additional query context customization
     * @throws InvalidQueryException if the query string cannot be parsed
     */
    public void buildBaseQuery(final QueryContext queryContext, final Consumer<QueryContext> context) {
        try {