Language/Classes/Superclasses/Inheritance_and_Overriding/overriding_t08.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/// @assertion Let C = S0 be a class declared in library L, and let
/// {S1 ... Sk} be the set of all superclasses of C, where Si is the superclass
/// of Si-1 for i in 1..k. Let C declare a member m, and let m' be a member
/// of Sj for j in 1..k, that has the same name as m, such that m' is
/// accessible to L. Then m overrides m' if m' is not already overridden by a
/// member of at least one of S1 ... Sj-1 and neither m nor m' are fields.
/// @description Checks that m does not override m' if m' is not accessible. Test
/// type aliases
/// @author sgrekhov@unipro.ru

import "../../../../Utils/expect.dart";
import "overriding_t04_lib.dart";

typedef SAlias = S;

class C extends SAlias {
  _foo(var arg) { return 'B'; }
  _bar([y]) {return "bary";}
  _g() {return "g";}
}

main() {
  C a = new C();
  Expect.equals("B", a._foo(0));
  Expect.equals("bary", a._bar());
  Expect.equals("g", a._g());
}