print("\n--- Test: Class init auto-call with args ---");

class Person {
  var name;
  var age;
  func init(n, a) { this.name = n; this.age = a; }
  func who() { return this.name + ":" + toString(this.age); }
}

var p = Person("Bob", 33);
assert(p.who() == "Bob:33", "init should set fields from constructor args");

print("Class init: PASS");