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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 | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 // Dart test for sort routines. | |
6 #library("SortTest.dart"); | |
7 #import("dart:coreimpl"); | |
8 #source("SortHelper.dart"); | |
9 | |
10 main() { | |
11 var compare = (a, b) => a.compareTo(b); | |
12 var sort = (list) => DualPivotQuicksort.sort(list, compare); | |
13 new SortHelper(sort, compare).run(); | |
14 | |
15 compare = (a, b) => -a.compareTo(b); | |
16 new SortHelper(sort, compare).run(); | |
17 | |
18 compare = (a, b) => a.compareTo(b); | |
19 | |
20 // Pivot-canditate indices: 7, 15, 22, 29, 37 | |
21 // Test dutch flag partitioning (canditates 2 and 4 are the same). | |
22 var list = [0, 0, 0, 0, 0, 0, 0, 0/**/, 0, 0, 0, 0, 0, 0, 0, | |
23 1/**/, 1, 1, 1, 1, 1, 1, 1/**/, 1, 1, 1, 1, 1, 1, 1/**/, | |
24 2, 2, 2, 2, 2, 2, 2, 2/**/, 2, 2, 2, 2, 2, 2, 2]; | |
25 list.sort(compare); | |
26 Expect.listEquals(list, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
27 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, | |
28 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2]); | |
29 | |
30 list = [0, 0, 0, 0, 0, 0, 0, 1/**/, 0, 0, 0, 0, 0, 0, 0, | |
31 0/**/, 1, 1, 1, 1, 1, 1, 0/**/, 1, 1, 1, 1, 1, 1, 0/**/, | |
32 2/**/, 2, 2, 2, 2, 2, 2, 2/**/, 2, 2, 2, 2, 2, 2, 2]; | |
33 list.sort(compare); | |
34 Expect.listEquals(list, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
35 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, | |
36 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2]); | |
37 | |
38 // Pivots: 1 and 8. | |
39 // The second partition will be big (more than 2/3 of the list), and an | |
40 // optimization kicks in that removes the pivots from the partition. | |
41 list = [0, 9, 0, 9, 3, 9, 0, 1/**/, 1, 0, 1, 9, 8, 2, 1, | |
42 1/**/, 4, 5, 2, 5, 0, 1, 8/**/, 8, 8, 5, 2, 2, 9, 8/**/, | |
43 8, 4, 4, 1, 5, 3, 2, 8/**/, 5, 1, 2, 8, 5, 6, 8]; | |
44 list.sort(compare); | |
45 Expect.listEquals(list, [0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, | |
46 2, 2, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 5, 5, 5, | |
47 6, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9]); | |
48 } | |
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