return "Suppliers.compose(" + function + ", " + supplier + ")";
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**
   * Returns a supplier which caches the instance retrieved during the first call to {@code get()}
   * and returns that value on subsequent calls to {@code get()}. See: <a
   * href="http://en.wikipedia.org/wiki/Memoization">memoization</a>
   *

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.atomic.AtomicInteger;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Basher test for {@link ConcurrentHashMultiset}: start a bunch of threads, have each of them do
 * operations at random. Each thread keeps track of the per-key deltas that it's directly

        assertEquals(0, initialThroughput);

        // Add some data transfer
        channelInfo.addBytesSent(1000);
        channelInfo.addBytesReceived(2000);

        // Wait a bit to ensure time passes
        try {
            Thread.sleep(10);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }

        long throughput = channelInfo.getThroughput();

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Basher test for {@link AtomicLongMap}.
 *
 * @author mike nonemacher
 */
@J2ktIncompatible // threads
@GwtIncompatible // threads
@NullUnmarked
public class AtomicLongMapBasherTest extends TestCase {

            .createTestSuite());

    suite.addTest(
        SetTestSuiteBuilder.using(new ImmutableSetWithBadHashesGenerator())
            .named(ImmutableSetTest.class.getName() + ", with bad hashes")
            .withFeatures(
                CollectionSize.ANY,
                CollectionFeature.KNOWN_ORDER,
                CollectionFeature.ALLOWS_NULL_QUERIES)
            .createTestSuite());

            .createTestSuite());

    suite.addTest(
        SetTestSuiteBuilder.using(new ImmutableSetWithBadHashesGenerator())
            .named(ImmutableSetTest.class.getName() + ", with bad hashes")
            .withFeatures(
                CollectionSize.ANY,
                CollectionFeature.KNOWN_ORDER,
                CollectionFeature.ALLOWS_NULL_QUERIES)
            .createTestSuite());

import com.google.common.util.concurrent.UncheckedExecutionException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * {@link LoadingCache} tests for caches with a maximum size of zero.
 *
 * @author mike nonemacher
 */
@NullUnmarked
public class NullCacheTest extends TestCase {
  QueuingRemovalListener<Object, Object> listener;

  @Override

import com.google.common.util.concurrent.UncheckedExecutionException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * {@link LoadingCache} tests for caches with a maximum size of zero.
 *
 * @author mike nonemacher
 */
@NullUnmarked
public class NullCacheTest extends TestCase {
  QueuingRemovalListener<Object, Object> listener;

  @Override

  private final int seed;

  Murmur3_128HashFunction(int seed) {
    this.seed = seed;
  }

  @Override
  public int bits() {
    return 128;
  }

  @Override
  public Hasher newHasher() {
    return new Murmur3_128Hasher(seed);
  }

  @Override
  public String toString() {
    return "Hashing.murmur3_128(" + seed + ")";
  }

  @Override

    @Override
    boolean isPartialView() {
      return ImmutableMap.this.isPartialView();
    }

    @Override
    public int hashCode() {
      // ImmutableSet.of(value).hashCode() == value.hashCode(), so the hashes are the same
      return ImmutableMap.this.hashCode();
    }

    @Override
    UnmodifiableIterator<Entry<K, ImmutableSet<V>>> entryIterator() {