1// Copyright 2008 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
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28var s = "test test test";
29
30var MAX_DOUBLE = 1.7976931348623157e+308;
31var MIN_DOUBLE = -MAX_DOUBLE;
32var MAX_SMI = Math.pow(2,30)-1;
33var MIN_SMI = -Math.pow(2,30);
34
35assertEquals(10, s.lastIndexOf("test", Infinity), "tinf");
36assertEquals(10, s.lastIndexOf("test", MAX_DOUBLE), "tmaxdouble");
37assertEquals(10, s.lastIndexOf("test", MAX_SMI), "tmaxsmi");
38assertEquals(10, s.lastIndexOf("test", s.length * 2), "t2length");
39assertEquals(10, s.lastIndexOf("test", 15), "t15");
40assertEquals(10, s.lastIndexOf("test", 14), "t14");
41assertEquals(10, s.lastIndexOf("test", 10), "t10");
42assertEquals(5, s.lastIndexOf("test", 9), "t9");
43assertEquals(5, s.lastIndexOf("test", 6), "t6");
44assertEquals(5, s.lastIndexOf("test", 5), "t5");
45assertEquals(0, s.lastIndexOf("test", 4), "t4");
46assertEquals(0, s.lastIndexOf("test", 0), "t0");
47assertEquals(0, s.lastIndexOf("test", -1), "t-1");
48assertEquals(0, s.lastIndexOf("test", -s.length), "t-len");
49assertEquals(0, s.lastIndexOf("test", MIN_SMI), "tminsmi");
50assertEquals(0, s.lastIndexOf("test", MIN_DOUBLE), "tmindouble");
51assertEquals(0, s.lastIndexOf("test", -Infinity), "tneginf");
52assertEquals(10, s.lastIndexOf("test"), "t");
53assertEquals(-1, s.lastIndexOf("notpresent"), "n");
54assertEquals(-1, s.lastIndexOf(), "none");
55assertEquals(10, s.lastIndexOf("test", "not a number"), "nan");
56
57var longNonMatch = "overlong string that doesn't match";
58var longAlmostMatch = "test test test!";
59var longAlmostMatch2 = "!test test test";
60
61
62assertEquals(-1, s.lastIndexOf(longNonMatch), "long");
63assertEquals(-1, s.lastIndexOf(longNonMatch, 10), "longpos");
64assertEquals(-1, s.lastIndexOf(longNonMatch, NaN), "longnan");
65assertEquals(-1, s.lastIndexOf(longAlmostMatch), "tlong");
66assertEquals(-1, s.lastIndexOf(longAlmostMatch, 10), "tlongpos");
67assertEquals(-1, s.lastIndexOf(longAlmostMatch), "tlongnan");
68
69var nonInitialMatch = "est";
70
71assertEquals(-1, s.lastIndexOf(nonInitialMatch, 0), "noninit");
72assertEquals(-1, s.lastIndexOf(nonInitialMatch, -1), "noninitneg");
73assertEquals(-1, s.lastIndexOf(nonInitialMatch, MIN_SMI), "noninitminsmi");
74assertEquals(-1, s.lastIndexOf(nonInitialMatch, MIN_DOUBLE), "noninitmindbl");
75assertEquals(-1, s.lastIndexOf(nonInitialMatch, -Infinity), "noninitneginf");
76
77for (var i = s.length + 10; i >= 0; i--) {
78  var expected = i < s.length ? i : s.length;
79  assertEquals(expected, s.lastIndexOf("", i), "empty" + i);
80}
81
82
83var reString = "asdf[a-z]+(asdf)?";
84
85assertEquals(4, reString.lastIndexOf("[a-z]+"), "r4");
86assertEquals(10, reString.lastIndexOf("(asdf)?"), "r10");
87
88assertEquals(1, String.prototype.lastIndexOf.length, "length");
89