|  | // 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. | 
|  |  | 
|  | // Regression test for issue 27164. | 
|  |  | 
|  | import 'package:expect/expect.dart'; | 
|  |  | 
|  | String simpleEcho(String arg) => arg; | 
|  |  | 
|  | class Echo { | 
|  | final echo; | 
|  | // Check that the expression simpleEcho is a compile-time constant. | 
|  | const Echo() : echo = simpleEcho; | 
|  | } | 
|  |  | 
|  | void main() { | 
|  | Expect.equals("hello", const Echo().echo("hello")); | 
|  | } |