writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages
    have prod supersource, even if they have none. GWT is happy to ignore us
    when we specify a nonexistent path.

      ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes.toByteArray()));
      return (T) in.readObject();
    } catch (IOException | ClassNotFoundException e) {
      Helpers.fail(e, e.getMessage());
    }
    throw new AssertionError("not reachable");
  }

  @Override
  public SampleElements<E> samples() {
    return delegate.samples();
  }

  @Override

    writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages
    have prod supersource, even if they have none. GWT is happy to ignore us
    when we specify a nonexistent path.

    assertFalse(multimap().containsValue(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_VALUE_QUERIES)
  public void testContainsNullValueFails() {
    try {
      multimap().containsValue(null);
      fail("Expected NullPointerException");
    } catch (NullPointerException expected) {
      // success
    }
  }

  public void testNegativeK() {
    try {
      TopKSelector.<String>least(-1);
      fail();
    } catch (IllegalArgumentException expected) {
    }
    try {
      TopKSelector.<String>greatest(-1);
      fail();
    } catch (IllegalArgumentException expected) {
    }
    try {
      TopKSelector.least(-1, Ordering.natural());
      fail();
    } catch (IllegalArgumentException expected) {
    }
    try {

      range.lowerEndpoint();
      fail();
    } catch (IllegalStateException expected) {
    }
    try {
      range.lowerBoundType();
      fail();
    } catch (IllegalStateException expected) {
    }
  }

  private static void assertUnboundedAbove(Range<Integer> range) {
    assertFalse(range.hasUpperBound());
    try {
      range.upperEndpoint();
      fail();

    try {
      builder.add((String) null);
      fail("expected NullPointerException");
    } catch (NullPointerException expected) {
    }
  }

  public void testBuilderAddAllHandlesNullsCorrectly() {
    ImmutableMultiset.Builder<String> builder = ImmutableMultiset.builder();
    try {
      builder.addAll((Collection<String>) null);
      fail("expected NullPointerException");

public class QueueRemoveTester<E> extends AbstractQueueTester<E> {
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ZERO)
  public void testRemove_empty() {
    try {
      getQueue().remove();
      fail("emptyQueue.remove() should throw");
    } catch (NoSuchElementException expected) {
    }
    expectUnchanged();
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  @CollectionSize.Require(ONE)

import static junit.framework.Assert.fail;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeoutException;

/** Methods factored out so that they can be emulated differently in GWT. */
final class TestPlatform {
  static void verifyGetOnPendingFuture(Future<?> future) {
    try {
      future.get();
      fail();
    } catch (Exception e) {

    try {
      builder.put(null, 1);
      fail();
    } catch (NullPointerException expected) {
    }
    try {
      builder.putAll(null, Arrays.asList(1, 2, 3));
      fail();
    } catch (NullPointerException expected) {
    }
    try {
      builder.putAll(null, 1, 2, 3);
      fail();
    } catch (NullPointerException expected) {
    }
    try {