|  | // Copyright (c) 2012, 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"; | 
|  |  | 
|  | const x = "foo"; | 
|  | const y = "foo"; | 
|  | const g1 = x + "bar"; | 
|  | const g2 = x | 
|  | + null //  //# 01: compile-time error | 
|  | ; | 
|  | const g3 = x | 
|  | + 499 //  //# 02: compile-time error | 
|  | ; | 
|  | const g4 = x | 
|  | + 3.3 //  //# 03: compile-time error | 
|  | ; | 
|  | const g5 = x | 
|  | + true //  //# 04: compile-time error | 
|  | ; | 
|  | const g6 = x | 
|  | + false //  //# 05: compile-time error | 
|  | ; | 
|  | const g7 = "foo" | 
|  | + x[0] //  //# 06: compile-time error | 
|  | ; | 
|  | const g8 = 1 + x.length; | 
|  | const g9 = x == y; | 
|  |  | 
|  | use(x) => x; | 
|  |  | 
|  | main() { | 
|  | Expect.equals("foobar", g1); | 
|  | Expect.isTrue(g9); | 
|  | use(g1); | 
|  | use(g2); | 
|  | use(g3); | 
|  | use(g4); | 
|  | use(g5); | 
|  | use(g6); | 
|  | use(g7); | 
|  | use(g8); | 
|  | } |