}

  public void testCheckPositive_minLong() {
    assertThrows(
        IllegalArgumentException.class,
        () -> MathPreconditions.checkPositive("long", Long.MIN_VALUE));
  }

  public void testCheckPositive_positiveLong() {
    MathPreconditions.checkPositive("long", 1);
  }

  public void testCheckPositive_negativeLong() {
    assertThrows(