List<Sink> sinks = Lists.newArrayList();
      for (int chunkSize = 4; chunkSize <= 32; chunkSize++) {
        for (int bufferSize = chunkSize; bufferSize <= chunkSize * 4; bufferSize += chunkSize) {
          // yes, that's a lot of sinks!
          sinks.add(new Sink(chunkSize, bufferSize));
          // For convenience, testing only with big endianness, to match DataOutputStream.

  }

  public void test_contains_null_set_yes() {
    Iterable<@Nullable String> set = Sets.newHashSet("a", null, "b");
    assertTrue(Iterables.contains(set, null));
  }

  public void test_contains_null_set_no() {
    Iterable<String> set = Sets.newHashSet("a", "b");
    assertFalse(Iterables.contains(set, null));
  }

  public void test_contains_null_iterable_yes() {

  }

  public void test_contains_nonnull_yes() {
    Iterator<@Nullable String> set = Arrays.<@Nullable String>asList("a", null, "b").iterator();
    assertTrue(Iterators.contains(set, "b"));
  }

  public void test_contains_nonnull_no() {
    Iterator<String> set = asList("a", "b").iterator();
    assertFalse(Iterators.contains(set, "c"));
  }

  public void test_contains_null_yes() {

  }

  private static void assertActuallyTrims(ImmutableLongArray iia) {
    ImmutableLongArray trimmed = iia.trimmed();
    assertThat(trimmed).isNotSameInstanceAs(iia);

    // Yes, this is apparently how you check array equality in Truth
    assertThat(trimmed.toArray()).isEqualTo(iia.toArray());
  }

  private static void assertDoesntActuallyTrim(ImmutableLongArray iia) {

  }

  private static void assertActuallyTrims(ImmutableDoubleArray iia) {
    ImmutableDoubleArray trimmed = iia.trimmed();
    assertThat(trimmed).isNotSameInstanceAs(iia);

    // Yes, this is apparently how you check array equality in Truth
    assertThat(trimmed.toArray()).isEqualTo(iia.toArray());
  }

  private static void assertDoesntActuallyTrim(ImmutableDoubleArray iia) {

    assertDoesntActuallyTrim(iia2);
  }

  private static void assertActuallyTrims(ImmutableIntArray iia) {
    ImmutableIntArray trimmed = iia.trimmed();
    assertThat(trimmed).isNotSameInstanceAs(iia);

    // Yes, this is apparently how you check array equality in Truth
    assertThat(trimmed.toArray()).isEqualTo(iia.toArray());
  }

  private static void assertDoesntActuallyTrim(ImmutableIntArray iia) {

        Class<?> theClass = Class.forName(UNSAFE_COMPARATOR_NAME);

        // requireNonNull is safe because the class is an enum.
        Object[] constants = requireNonNull(theClass.getEnumConstants());

        // yes, UnsafeComparator does implement Comparator<byte[]>
        @SuppressWarnings("unchecked")
        Comparator<byte[]> comparator = (Comparator<byte[]>) constants[0];
        return comparator;

          @Override
          public void oneDeclared() throws SomeCheckedException {
            try {
              methodThatDoesntThrowAnything();
            } catch (Throwable t) {
              // yes, this block is never reached, but for purposes of illustration
              // we're keeping it the same in each test
              Throwables.propagateIfPossible(t, SomeCheckedException.class);

          @Override
          public void oneDeclared() throws SomeCheckedException {
            try {
              methodThatDoesntThrowAnything();
            } catch (Throwable t) {
              // yes, this block is never reached, but for purposes of illustration
              // we're keeping it the same in each test
              Throwables.propagateIfPossible(t, SomeCheckedException.class);

    assertDoesntActuallyTrim(iia2);
  }

  private static void assertActuallyTrims(ImmutableIntArray iia) {
    ImmutableIntArray trimmed = iia.trimmed();
    assertThat(trimmed).isNotSameInstanceAs(iia);

    // Yes, this is apparently how you check array equality in Truth
    assertThat(trimmed.toArray()).isEqualTo(iia.toArray());
  }

  private static void assertDoesntActuallyTrim(ImmutableIntArray iia) {