UnsignedInteger unsignedValue = UnsignedInteger.fromIntBits(value);
      assertThat(unsignedValue.doubleValue())
          .isEqualTo(unsignedValue.bigIntegerValue().doubleValue());
    }
  }

  public void testPlus() {
    for (int a : TEST_INTS) {
      for (int b : TEST_INTS) {
        UnsignedInteger aUnsigned = UnsignedInteger.fromIntBits(a);
        UnsignedInteger bUnsigned = UnsignedInteger.fromIntBits(b);