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 28 var s = "test test test"; 29 30 var MAX_DOUBLE = 1.7976931348623157e+308; 31 var MIN_DOUBLE = -MAX_DOUBLE; 32 var MAX_SMI = Math.pow(2,30)-1; 33 var MIN_SMI = -Math.pow(2,30); 34 35 assertEquals(10, s.lastIndexOf("test", Infinity), "tinf"); 36 assertEquals(10, s.lastIndexOf("test", MAX_DOUBLE), "tmaxdouble"); 37 assertEquals(10, s.lastIndexOf("test", MAX_SMI), "tmaxsmi"); 38 assertEquals(10, s.lastIndexOf("test", s.length * 2), "t2length"); 39 assertEquals(10, s.lastIndexOf("test", 15), "t15"); 40 assertEquals(10, s.lastIndexOf("test", 14), "t14"); 41 assertEquals(10, s.lastIndexOf("test", 10), "t10"); 42 assertEquals(5, s.lastIndexOf("test", 9), "t9"); 43 assertEquals(5, s.lastIndexOf("test", 6), "t6"); 44 assertEquals(5, s.lastIndexOf("test", 5), "t5"); 45 assertEquals(0, s.lastIndexOf("test", 4), "t4"); 46 assertEquals(0, s.lastIndexOf("test", 0), "t0"); 47 assertEquals(0, s.lastIndexOf("test", -1), "t-1"); 48 assertEquals(0, s.lastIndexOf("test", -s.length), "t-len"); 49 assertEquals(0, s.lastIndexOf("test", MIN_SMI), "tminsmi"); 50 assertEquals(0, s.lastIndexOf("test", MIN_DOUBLE), "tmindouble"); 51 assertEquals(0, s.lastIndexOf("test", -Infinity), "tneginf"); 52 assertEquals(10, s.lastIndexOf("test"), "t"); 53 assertEquals(-1, s.lastIndexOf("notpresent"), "n"); 54 assertEquals(-1, s.lastIndexOf(), "none"); 55 assertEquals(10, s.lastIndexOf("test", "not a number"), "nan"); 56 57 var longNonMatch = "overlong string that doesn't match"; 58 var longAlmostMatch = "test test test!"; 59 var longAlmostMatch2 = "!test test test"; 60 61 62 assertEquals(-1, s.lastIndexOf(longNonMatch), "long"); 63 assertEquals(-1, s.lastIndexOf(longNonMatch, 10), "longpos"); 64 assertEquals(-1, s.lastIndexOf(longNonMatch, NaN), "longnan"); 65 assertEquals(-1, s.lastIndexOf(longAlmostMatch), "tlong"); 66 assertEquals(-1, s.lastIndexOf(longAlmostMatch, 10), "tlongpos"); 67 assertEquals(-1, s.lastIndexOf(longAlmostMatch), "tlongnan"); 68 69 var nonInitialMatch = "est"; 70 71 assertEquals(-1, s.lastIndexOf(nonInitialMatch, 0), "noninit"); 72 assertEquals(-1, s.lastIndexOf(nonInitialMatch, -1), "noninitneg"); 73 assertEquals(-1, s.lastIndexOf(nonInitialMatch, MIN_SMI), "noninitminsmi"); 74 assertEquals(-1, s.lastIndexOf(nonInitialMatch, MIN_DOUBLE), "noninitmindbl"); 75 assertEquals(-1, s.lastIndexOf(nonInitialMatch, -Infinity), "noninitneginf"); 76 77 for (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 83 var reString = "asdf[a-z]+(asdf)?"; 84 85 assertEquals(4, reString.lastIndexOf("[a-z]+"), "r4"); 86 assertEquals(10, reString.lastIndexOf("(asdf)?"), "r10"); 87 88 assertEquals(1, String.prototype.lastIndexOf.length, "length"); 89
