}

  public void testCheckPositive_negativeInt() {
    assertThrows(IllegalArgumentException.class, () -> MathPreconditions.checkPositive("int", -1));
  }

  public void testCheckPositive_zeroLong() {
    assertThrows(IllegalArgumentException.class, () -> MathPreconditions.checkPositive("long", 0L));
  }

  public void testCheckPositive_maxLong() {
    MathPreconditions.checkPositive("long", Long.MAX_VALUE);