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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 | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 // Test of parameterized types with invalid bounds. | |
6 | |
7 interface J<T> { } | |
8 | |
9 interface K<T> { } | |
10 | |
11 interface I<T | |
12 extends num /// 00: continued | |
13 extends num /// 01: continued | |
14 extends num /// 02: continued | |
15 extends num /// 03: continued | |
16 extends num /// 04: continued | |
17 extends num /// 05: continued | |
18 extends num /// 06: continued | |
19 > { } | |
20 | |
21 class A<T> implements I<T>, J<T> { | |
22 } | |
23 | |
24 main() { | |
25 var a = new A<String>(); | |
26 | |
27 { | |
28 I i = a; /// 00: dynamic type error, static type warning | |
29 J j = a; /// 01: static type warning | |
30 K k = a; /// 02: dynamic type error, static type warning | |
31 | |
32 // In production mode, A<String> is subtype of I, error in checked mode. | |
33 var x = a is I; /// 03: dynamic type error, static type warning | |
34 | |
35 // In both production and checked modes, A<String> is a subtype of J. | |
36 Expect.isTrue(a is J); /// 04: static type warning | |
37 | |
38 // In both production and checked modes, A<String> is not a subtype of K. | |
39 // However, while unsuccessfully trying to prove that A<String> is a K, | |
40 // a malformed type is encountered in checked mode, resulting in a dynamic | |
41 // type error. | |
42 Expect.isTrue(a is !K); /// 05: dynamic type error | |
43 } | |
44 | |
45 a = new A<int>(); | |
46 | |
47 { | |
48 I i = a; | |
49 J j = a; | |
50 K k = a; /// 06: dynamic type error, static type warning | |
51 | |
52 // In both production and checked modes, A<int> is a subtype of I. | |
53 Expect.isTrue(a is I); | |
54 | |
55 // In both production and checked modes, A<int> is a subtype of J. | |
56 Expect.isTrue(a is J); | |
57 | |
58 // In both production and checked modes, A<int> is not a subtype of K. | |
59 Expect.isTrue(a is !K); | |
60 } | |
61 } | |
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