|  | // 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"; | 
|  | import "package:async_helper/async_helper.dart"; | 
|  | import '../helpers/compiler_helper.dart'; | 
|  |  | 
|  | String TEST = r''' | 
|  | main() { | 
|  | foo(null); | 
|  | } | 
|  | foo(a) { | 
|  | if (a != null) return 42; | 
|  | return 54; | 
|  | } | 
|  | '''; | 
|  |  | 
|  | main() { | 
|  | runTest() async { | 
|  | String generated = await compileAll(TEST); | 
|  | Expect.isFalse(generated.contains('return 42'), 'dead code not eliminated'); | 
|  | } | 
|  |  | 
|  | asyncTest(() async { | 
|  | print('--test from kernel------------------------------------------------'); | 
|  | await runTest(); | 
|  | }); | 
|  | } |