result.add(element != null ? element.value : null);
      }
      return unmodifiableList(result);
    }
  }

  /** The result of a successful {@code Future}. */
  private static final class Present<V extends @Nullable Object> {
    @ParametricNullness final V value;

    Present(@ParametricNullness V value) {
      this.value = value;
    }
  }

      assertThat(Shorts.checkedCast((long) value)).isEqualTo(value);
    }
    assertCastFails(GREATEST + 1L);
    assertCastFails(LEAST - 1L);
    assertCastFails(Long.MAX_VALUE);
    assertCastFails(Long.MIN_VALUE);
  }

  public void testSaturatedCast() {
    for (short value : VALUES) {
      assertThat(Shorts.saturatedCast((long) value)).isEqualTo(value);
    }

    SerializableTester.reserializeAndAssert(Equivalence.identity());
  }

  private static class IntValue {
    private final int value;

    IntValue(int value) {
      this.value = value;
    }

    @Override
    public String toString() {
      return "value = " + value;
    }
  }

  public void testOnResultOf() {
    EquivalenceTester.of(Equivalence.equals().onResultOf(Functions.toStringFunction()))

      new DiscreteDomain<Integer>() {
        @Override
        public Integer next(Integer value) {
          return integers().next(value);
        }

        @Override
        public Integer previous(Integer value) {
          return integers().previous(value);
        }

        @Override
        public long distance(Integer start, Integer end) {

      array = new double[initialCapacity];
    }

    /**
     * Appends {@code value} to the end of the values the built {@link ImmutableDoubleArray} will
     * contain.
     */
    @CanIgnoreReturnValue
    public Builder add(double value) {
      ensureRoomFor(1);
      array[count] = value;
      count += 1;
      return this;
    }

    /**

          equal(getMap().get(entry.getKey()), entry.getValue()));
    }
  }

  private static boolean equal(@Nullable Object a, @Nullable Object b) {
    return a == b || (a != null && a.equals(b));
  }

  // This one-liner saves us from some ugly casts
  protected Entry<K, V> entry(K key, V value) {
    return Helpers.mapEntry(key, value);
  }

  public void testReturning() throws Exception {
    assertNull(Callables.returning(null).call());

    Object value = new Object();
    Callable<Object> callable = Callables.returning(value);
    assertSame(value, callable.call());
    // Expect the same value on subsequent calls
    assertSame(value, callable.call());
  }

  @J2ktIncompatible
  @GwtIncompatible
  public void testAsAsyncCallable() throws Exception {

  public V put(K key, @ParametricNullness V value) {
    return super.put(key, value);
  }

  @CanIgnoreReturnValue
  @Override
  @SuppressWarnings("RedundantOverride") // b/192446478: RedundantOverride ignores some annotations.
  // TODO(b/192446998): Remove this override after tools understand nullness better.
  @CheckForNull
  public V forcePut(K key, @ParametricNullness V value) {
    return super.forcePut(key, value);
  }

    assertThat(LARGE_LONG_VALUES_STATS.mean())
        .isWithin(ALLOWED_ERROR * Long.MAX_VALUE)
        .of(LARGE_LONG_VALUES_MEAN);
  }

  public void testSum() {
    assertThat(EMPTY_STATS_VARARGS.sum()).isEqualTo(0.0);
    assertThat(EMPTY_STATS_ITERABLE.sum()).isEqualTo(0.0);
    assertThat(ONE_VALUE_STATS.sum()).isWithin(ALLOWED_ERROR).of(ONE_VALUE);
    assertThat(TWO_VALUES_STATS.sum()).isWithin(ALLOWED_ERROR).of(TWO_VALUES_MEAN * 2);

 * public class SafeBox<V> {
 *   private V value;
 *
 *   public synchronized V get() throws InterruptedException {
 *     while (value == null) {
 *       wait();
 *     }
 *     V result = value;
 *     value = null;
 *     notifyAll();
 *     return result;
 *   }
 *
 *   public synchronized void set(V newValue) throws InterruptedException {
 *     while (value != null) {
 *       wait();
 *     }