assertThat(expectSuccess).isTrue();
      } catch (IllegalArgumentException e) {
        assertThat(expectSuccess).isFalse();
      }
    }
  }

  public void testValueOfBigInteger() {
    BigInteger min = BigInteger.ZERO;
    BigInteger max = UnsignedLong.MAX_VALUE.bigIntegerValue();
    for (BigInteger big : TEST_BIG_INTEGERS) {