|  | // Copyright (c) 2016, 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. | 
|  |  | 
|  | // @dart = 2.9 | 
|  |  | 
|  | import "package:expect/expect.dart"; | 
|  | import 'regress27957_lib1.dart' as s1; | 
|  | import 'regress27957_lib2.dart' as s2; | 
|  |  | 
|  | class Mixin {} | 
|  |  | 
|  | class C1 = s1.Superclass with Mixin; | 
|  | class C2 = s2.Superclass with Mixin; | 
|  |  | 
|  | main() { | 
|  | var c1 = new C1(), c2 = new C2(); | 
|  | Expect.equals(1, c1.m()); | 
|  | Expect.equals(2, c2.m()); | 
|  | } |