@BeforeExperiment
  void setUp() {
    // random integers will be generated in this range, then raised to the
    // power of (1/concentration) and floor()ed
    max = Ints.checkedCast((long) Math.pow(distinctKeys, concentration));

    cache =
        CacheBuilder.newBuilder()
            .concurrencyLevel(segments)
            .maximumSize(maximumSize)
            .build(

    //                                                                        ============

    private static OptionalEntity<AccessToken> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new AccessToken()).map(entity -> {
                entity.setCreatedBy(username);

        private Boolean explain;

        private Float minScore;

        private String preference;

        private String routing;

        private String searchType;

        private long timeoutInMillis = -1;

        private Boolean version;

        private Boolean seqNoAndPrimaryTerm = Boolean.TRUE;

        private int terminateAfter = 0;

   * with a differently behaving {@code loader}. For example, a call that requests a short timeout
   * for an RPC may wait for a similar call that requests a long timeout, or a call by an
   * unprivileged user may return a resource accessible only to a privileged user making a similar
   * call. To prevent this problem, create a key object that includes all values that affect the

            Long expiration = System.currentTimeMillis() + 10000L;
            echoResponse.setExpiration(expiration);

            assertEquals(expiration, echoResponse.getExpiration());
        }

        @Test
        @DisplayName("Should handle null expiration")
        void testNullExpiration() {
            Long expiration = 1000L;

        assertEquals("FFFF", Hexdump.toHexString(-1, 4));
        assertEquals("FF", Hexdump.toHexString(-1, 2));
    }

    @Test
    @DisplayName("Should convert long to hex string with specified size")
    void testToHexStringLong() {
        // Test zero
        assertEquals("0000000000000000", Hexdump.toHexString(0L, 16));
        assertEquals("00000000", Hexdump.toHexString(0L, 8));

        return STEMMER_OVERRIDE;
    }

    @Override
    public String getPath() {
        return path;
    }

    @Override
    public synchronized OptionalEntity<StemmerOverrideItem> get(final long id) {
        if (stemmerOverrideItemList == null) {
            reload(null);
        }

        for (final StemmerOverrideItem stemmerOverrideItem : stemmerOverrideItemList) {

    //                                                                        ============

    private static OptionalEntity<RelatedQuery> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new RelatedQuery()).map(entity -> {
                entity.setCreatedBy(username);

 * @author Justin T. Sampson
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public final class TestThread<L> extends Thread implements TearDown {

  private static final long DUE_DILIGENCE_MILLIS = 100;
  private static final long TIMEOUT_MILLIS = 5000;

  private final L lockLikeObject;

  private final SynchronousQueue<Request> requestQueue = new SynchronousQueue<>();

    }
  }

  private static class ExpectedHashCode {
    final byte[] bytes;
    final int asInt;
    final Long asLong; // null means that asLong should throw an exception
    final String toString;

    ExpectedHashCode(byte[] bytes, int asInt, @Nullable Long asLong, String toString) {
      this.bytes = bytes;
      this.asInt = asInt;
      this.asLong = asLong;
      this.toString = toString;