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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, 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 class ListIteratorsTest { | 5 class ListIteratorsTest { |
6 static void checkListIterator(List a) { | 6 static void checkListIterator(List a) { |
7 Iterator it = a.iterator; | 7 Iterator it = a.iterator; |
8 Expect.isNull(it.current); | 8 Expect.isNull(it.current); |
9 for (int i = 0; i < a.length; i++) { | 9 for (int i = 0; i < a.length; i++) { |
10 Expect.isTrue(it.moveNext()); | 10 Expect.isTrue(it.moveNext()); |
11 var elem = it.current; | 11 var elem = it.current; |
12 Expect.equals(a[i], elem); | 12 Expect.equals(a[i], elem); |
13 } | 13 } |
14 Expect.isFalse(it.moveNext()); | 14 Expect.isFalse(it.moveNext()); |
15 Expect.isNull(it.current); | 15 Expect.isNull(it.current); |
16 } | 16 } |
17 | 17 |
18 static testMain() { | 18 static testMain() { |
19 checkListIterator([]); | 19 checkListIterator([]); |
20 checkListIterator([1, 2]); | 20 checkListIterator([1, 2]); |
21 checkListIterator(new List.fixedLength(0)); | 21 checkListIterator(new List(0)); |
22 checkListIterator(new List.fixedLength(10)); | 22 checkListIterator(new List(10)); |
23 checkListIterator(new List()); | 23 checkListIterator(new List()); |
24 List g = new List(); | 24 List g = new List(); |
25 g.addAll([1, 2, 3]); | 25 g.addAll([1, 2, 3]); |
26 checkListIterator(g); | 26 checkListIterator(g); |
27 | 27 |
28 // This is mostly undefined behavior. | 28 // This is mostly undefined behavior. |
29 Iterator it = g.iterator; | 29 Iterator it = g.iterator; |
30 Expect.isTrue(it.moveNext()); | 30 Expect.isTrue(it.moveNext()); |
31 Expect.equals(1, it.current); | 31 Expect.equals(1, it.current); |
32 Expect.isTrue(it.moveNext()); | 32 Expect.isTrue(it.moveNext()); |
33 g[1] = 49; | 33 g[1] = 49; |
34 // The iterator keeps the last value. | 34 // The iterator keeps the last value. |
35 Expect.equals(2, it.current); | 35 Expect.equals(2, it.current); |
36 Expect.isTrue(it.moveNext()); | 36 Expect.isTrue(it.moveNext()); |
37 g.removeLast(); | 37 g.removeLast(); |
38 // The iterator keeps the last value. | 38 // The iterator keeps the last value. |
39 Expect.equals(3, it.current); | 39 Expect.equals(3, it.current); |
40 Expect.throws(it.moveNext, (e) => e is ConcurrentModificationError); | 40 Expect.throws(it.moveNext, (e) => e is ConcurrentModificationError); |
41 // No progress when throwing. | 41 // No progress when throwing. |
42 Expect.equals(3, it.current); | 42 Expect.equals(3, it.current); |
43 } | 43 } |
44 } | 44 } |
45 | 45 |
46 main() { | 46 main() { |
47 ListIteratorsTest.testMain(); | 47 ListIteratorsTest.testMain(); |
48 } | 48 } |
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