#include <iostream>

#include <cassert>

using namespace std;

#include "widgets.h"

int main()
{

    Widget w1(5);

    assert(w1.getId()==5);

    Wodget w2(6);

    assert(w2.getId()==6);
    assert(w2.getKnobs()==0);
    w2.add();
    assert(w2.getKnobs()==1);
    w2.add();
    assert(w2.getKnobs()==2);

    return 0;
}