| open class Base() { | |
| fun n(n : Int) : Int = n + 1 | |
| } | |
| interface Abstract {} | |
| class Derived1() : Base(), Abstract {} | |
| class Derived2() : Abstract, Base() {} | |
| fun test(s : Base) : Boolean = s.n(238) == 239 | |
| fun box() : String { | |
| if (!test(Base())) return "Fail #1" | |
| if (!test(Derived1())) return "Fail #2" | |
| if (!test(Derived2())) return "Fail #3" | |
| return "OK" | |
| } |