|  | // Copyright (c) 2013, 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. | 
|  |  | 
|  | import "package:expect/expect.dart"; | 
|  |  | 
|  | // Tests codegen of methods reached only via mixin. | 
|  |  | 
|  | class A { | 
|  | foo(x, [y]) => '$x;$y'; | 
|  | } | 
|  |  | 
|  | class B extends A with M1, M2, M3 {} | 
|  |  | 
|  | class M1 {} | 
|  |  | 
|  | class M2 { | 
|  | // These methods are only defined in this non-first, non-last mixin. | 
|  | plain(x) => 'P $x'; | 
|  | // Check arity stubs are also available. | 
|  | bar(x, [y]) => '$y,$x'; | 
|  | } | 
|  |  | 
|  | class M3 {} | 
|  |  | 
|  | makeB() { | 
|  | return [new A(), new B()].last as B; | 
|  | } | 
|  |  | 
|  | main() { | 
|  | // makeB enters the compilation worklist after main, so the selectors are | 
|  | // registered before the classes. | 
|  | var b = makeB(); | 
|  | Expect.equals('1;2', b.foo(1, 2)); | 
|  | Expect.equals('2;null', b.foo(2)); | 
|  | Expect.equals('P 3', b.plain(3)); | 
|  | Expect.equals('100,4', b.bar(4, 100)); | 
|  | Expect.equals('null,5', b.bar(5)); | 
|  | } |