1// Copyright 2013 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
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11//       with the distribution.
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13//       contributors may be used to endorse or promote products derived
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15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Performance test for overriden methods. Makes sure that default case
29// is faster (cached) than the general case.
30
31// Default, cached.
32var startTime = new Date();
33for (var i = 0; i < 1000; i++) {
34  'a'.localeCompare('c');
35}
36var endTime = new Date();
37var cachedTime = endTime.getTime() - startTime.getTime();
38
39// Not cached.
40startTime = new Date();
41for (var i = 0; i < 1000; i++) {
42  'a'.localeCompare('c', 'sr');
43}
44endTime = new Date();
45var nonCachedTime = endTime.getTime() - startTime.getTime();
46
47// Using collator. Faster than default, but not by much.
48var collator = Intl.Collator();
49startTime = new Date();
50for (var i = 0; i < 1000; i++) {
51  collator.compare('a', 'c');
52}
53endTime = new Date();
54collatorTime = endTime.getTime() - startTime.getTime();
55
56// Difference is within 20%.
57assertTrue(collatorTime < cachedTime);
58// Non-cached time is much slower, measured to 12.5 times.
59assertTrue(cachedTime < nonCachedTime);
60
61