package foo

fun test(x: Int, y: Int) = y - x

fun box() : Boolean {
    if (test(1,2) != 1) {
        return false;
    }
    if (test(x=1, y=2) != 1) {
        return false;
    }
    if (test(y=2, x=1) != 1) {
        return false;
    }
    return true
}