}

  public void testCheckNonNegative_negativeLong() {
    assertThrows(
        IllegalArgumentException.class, () -> MathPreconditions.checkNonNegative("int", -1L));
  }

  public void testCheckNonNegative_zeroBigInteger() {
    MathPreconditions.checkNonNegative("BigInteger", BigInteger.ZERO);
  }

  public void testCheckNonNegative_positiveBigInteger() {