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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 import "package:expect/expect.dart"; | |
6 | |
7 main() { | 5 main() { |
8 testOne(); | 6 testOne(); |
9 testTwo(); | 7 testTwo(); |
10 } | 8 } |
11 | 9 |
12 testOne() { | 10 testOne() { |
13 // Dart2JS uses t[0-9]* to declare temporaries, so a local variable | 11 // Dart2JS uses t[0-9]* to declare temporaries, so a local variable |
14 // with that pattern can conflict with them. | 12 // with that pattern can conflict with them. |
15 var t0 = new List(); | 13 var t0 = new List(); |
16 // By using 'is' check, we make sure 't0.length' does not become | 14 // By using 'is' check, we make sure 't0.length' does not become |
17 // generate at use site. | 15 // generate at use site. |
18 Expect.isTrue(t0.length is int); | 16 Expect.isTrue(t0.length is int); |
19 Expect.isTrue(t0 is List); | 17 Expect.isTrue(t0 is List); |
20 } | 18 } |
21 | 19 |
22 testTwo() { | 20 testTwo() { |
23 var x = new List(); | 21 var x = new List(); |
24 var x_0 = new List(); | 22 var x_0 = new List(); |
25 { | 23 { |
26 // This used to introduce x_0. | 24 // This used to introduce x_0. |
27 var x = new Set(); | 25 var x = new Set(); |
28 Expect.equals(0, x.length); | 26 Expect.equals(0, x.length); |
29 Expect.isTrue(x.isEmpty); | 27 Expect.isTrue(x.isEmpty); |
30 } | 28 } |
31 Expect.isTrue(x is List); | 29 Expect.isTrue(x is List); |
32 Expect.isTrue(x_0 is List); | 30 Expect.isTrue(x_0 is List); |
33 } | 31 } |
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