Language/Mixins/Mixin_Application/syntax_t09.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 Let S be a class, M be a mixin with required superinterfaces
/// T1, . . . , Tn, combined superinterface MS, implemented interfaces
/// I1, . . . , Ik and members as mixin member declarations, and let N be a name.
/// ...
/// The mixin application of M to S with name N introduces a new class, C,
/// with name N, superclass S, implemented interface I1, . . . , Ik and members
/// as instance members.
/// @description Checks that mixin application of the form S with M1,...,Mk;
/// defines a class C with superclass S with M1,...Mk-1. So if Mi have methods
/// with the same names then Mk method overrides the ones from Mi
/// @author sgrekhov@unipro.ru

import '../../../Utils/expect.dart';

class S {
  String get m => "S";
}

class M1 {
  String get m => "M1";
}

class M2 {
  String get m => "M2";
}

class M3 {
  String get m => "M3";
}

class C1 extends S with M1 {
  test() {
    Expect.equals("M1", super.m);
  }
}

class C2 extends S with M1, M2 {
  test() {
    Expect.equals("M2", super.m);
  }
}

class C3 extends S with M1, M2, M3 {
  test() {
    Expect.equals("M3", super.m);
  }
}

main() {
  C1 c1 = new C1();
  c1.test();

  C2 c2 = new C2();
  c2.test();

  C3 c3 = new C3();
  c3.test();
}