JezK
Edit File: string-lastindexof.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. var s = "test test test"; var MAX_DOUBLE = 1.7976931348623157e+308; var MIN_DOUBLE = -MAX_DOUBLE; var MAX_SMI = Math.pow(2,30)-1; var MIN_SMI = -Math.pow(2,30); assertEquals(10, s.lastIndexOf("test", Infinity), "tinf"); assertEquals(10, s.lastIndexOf("test", MAX_DOUBLE), "tmaxdouble"); assertEquals(10, s.lastIndexOf("test", MAX_SMI), "tmaxsmi"); assertEquals(10, s.lastIndexOf("test", s.length * 2), "t2length"); assertEquals(10, s.lastIndexOf("test", 15), "t15"); assertEquals(10, s.lastIndexOf("test", 14), "t14"); assertEquals(10, s.lastIndexOf("test", 10), "t10"); assertEquals(5, s.lastIndexOf("test", 9), "t9"); assertEquals(5, s.lastIndexOf("test", 6), "t6"); assertEquals(5, s.lastIndexOf("test", 5), "t5"); assertEquals(0, s.lastIndexOf("test", 4), "t4"); assertEquals(0, s.lastIndexOf("test", 0), "t0"); assertEquals(0, s.lastIndexOf("test", -1), "t-1"); assertEquals(0, s.lastIndexOf("test", -s.length), "t-len"); assertEquals(0, s.lastIndexOf("test", MIN_SMI), "tminsmi"); assertEquals(0, s.lastIndexOf("test", MIN_DOUBLE), "tmindouble"); assertEquals(0, s.lastIndexOf("test", -Infinity), "tneginf"); assertEquals(10, s.lastIndexOf("test"), "t"); assertEquals(-1, s.lastIndexOf("notpresent"), "n"); assertEquals(-1, s.lastIndexOf(), "none"); assertEquals(10, s.lastIndexOf("test", "not a number"), "nan"); var longNonMatch = "overlong string that doesn't match"; var longAlmostMatch = "test test test!"; var longAlmostMatch2 = "!test test test"; assertEquals(-1, s.lastIndexOf(longNonMatch), "long"); assertEquals(-1, s.lastIndexOf(longNonMatch, 10), "longpos"); assertEquals(-1, s.lastIndexOf(longNonMatch, NaN), "longnan"); assertEquals(-1, s.lastIndexOf(longAlmostMatch), "tlong"); assertEquals(-1, s.lastIndexOf(longAlmostMatch, 10), "tlongpos"); assertEquals(-1, s.lastIndexOf(longAlmostMatch), "tlongnan"); var nonInitialMatch = "est"; assertEquals(-1, s.lastIndexOf(nonInitialMatch, 0), "noninit"); assertEquals(-1, s.lastIndexOf(nonInitialMatch, -1), "noninitneg"); assertEquals(-1, s.lastIndexOf(nonInitialMatch, MIN_SMI), "noninitminsmi"); assertEquals(-1, s.lastIndexOf(nonInitialMatch, MIN_DOUBLE), "noninitmindbl"); assertEquals(-1, s.lastIndexOf(nonInitialMatch, -Infinity), "noninitneginf"); for (var i = s.length + 10; i >= 0; i--) { var expected = i < s.length ? i : s.length; assertEquals(expected, s.lastIndexOf("", i), "empty" + i); } var reString = "asdf[a-z]+(asdf)?"; assertEquals(4, reString.lastIndexOf("[a-z]+"), "r4"); assertEquals(10, reString.lastIndexOf("(asdf)?"), "r10"); assertEquals(1, String.prototype.lastIndexOf.length, "length");