Language/Mixins/Mixin_Application/initializers_t02.dart

// Copyright (c) 2015, 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 If any of the instance fields of M (respectively, Mk) have
/// initializers, they are executed in the scope of M (respectively, Mk) to
/// initialize the corresponding fields of C.
/// @description Checks that if mixins have initializers then they are executed
/// and initialize corresponding fields of the class.
/// @author sgrekhov@unipro.ru

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

class A {
  int _xa = 0;
  int get x => _xa;
}

class M1 {
  int _xm1 = 1;
  int get x => _xm1;
}

class M2 {
  int _xm2 = 2;
  int get x => _xm2;
}

class B1 extends A with M1 {
  test() {
    Expect.equals(1, super.x);
  }
}

class B2 extends A with M1, M2 {
  test() {
    Expect.equals(2, super.x);
  }
}
class B3 extends B1 with M2 {
  test() {
    Expect.equals(2, super.x);
  }
}

main() {
  B1 b1 = new B1();
  b1.test();

  B2 b2 = new B2();
  b2.test();

  B3 b3 = new B3();
  b3.test();
}