}

  public void testCheckPositive_minInt() {
    assertThrows(
        IllegalArgumentException.class,
        () -> MathPreconditions.checkPositive("int", Integer.MIN_VALUE));
  }

  public void testCheckPositive_positiveInt() {
    MathPreconditions.checkPositive("int", 1);
  }

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