string-index.js revision a7e24c173cf37484693b9abb38e494fa7bd7baeb
1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2008 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block/** 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block * @fileoverview Test indexing on strings with []. 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block */ 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar foo = "Foo"; 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("Foo", foo); 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("F", foo[0]); 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("o", foo[1]); 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("o", foo[2]); 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("F", foo["0" + ""], "string index"); 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("o", foo["1"], "string index"); 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("o", foo["2"], "string index"); 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("undefined", typeof(foo[3]), "out of range"); 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SpiderMonkey 1.5 fails this next one. So does FF 2.0.6. 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("undefined", typeof(foo[-1]), "known failure in SpiderMonkey 1.5"); 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("undefined", typeof(foo[-2]), "negative index"); 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockfoo[0] = "f"; 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("Foo", foo); 49a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockfoo[3] = "t"; 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("Foo", foo); 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("undefined", typeof(foo[3]), "out of range"); 53a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("undefined", typeof(foo[-2]), "negative index"); 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 55a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar S = new String("foo"); 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("foo", S); 57a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("f", S[0], "string object"); 58a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("f", S["0"], "string object"); 59a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockS[0] = 'bente'; 60a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("f", S[0], "string object"); 61a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("f", S["0"], "string object"); 62a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockS[-2] = 'spider'; 63a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('spider', S[-2]); 64a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockS[3] = 'monkey'; 65a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('monkey', S[3]); 66a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockS['foo'] = 'Fu'; 67a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("Fu", S.foo); 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// In FF this is ignored I think. In V8 it puts a property on the String object 70a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// but you won't ever see it because it is hidden by the 0th character in the 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// string. The net effect is pretty much the same. 72a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockS["0"] = 'bente'; 73a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("f", S[0], "string object"); 74a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("f", S["0"], "string object"); 75a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 76a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, 0 in S, "0 in"); 77a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, -1 in S, "-1 in"); 78a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, 2 in S, "2 in"); 79a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, 3 in S, "3 in"); 80a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, 4 in S, "3 in"); 81a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 82a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, "0" in S, '"0" in'); 83a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, "-1" in S, '"-1" in'); 84a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, "2" in S, '"2" in'); 85a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, "3" in S, '"3" in'); 86a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, "4" in S, '"3" in'); 87a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 88a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, S.hasOwnProperty(0), "0 hasOwnProperty"); 89a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, S.hasOwnProperty(-1), "-1 hasOwnProperty"); 90a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, S.hasOwnProperty(2), "2 hasOwnProperty"); 91a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, S.hasOwnProperty(3), "3 hasOwnProperty"); 92a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, S.hasOwnProperty(4), "3 hasOwnProperty"); 93a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 94a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, S.hasOwnProperty("0"), '"0" hasOwnProperty'); 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, S.hasOwnProperty("-1"), '"-1" hasOwnProperty'); 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, S.hasOwnProperty("2"), '"2" hasOwnProperty'); 97a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, S.hasOwnProperty("3"), '"3" hasOwnProperty'); 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, S.hasOwnProperty("4"), '"3" hasOwnProperty'); 99a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 100a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, "foo".hasOwnProperty(0), "foo 0 hasOwnProperty"); 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, "foo".hasOwnProperty(-1), "foo -1 hasOwnProperty"); 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, "foo".hasOwnProperty(2), "foo 2 hasOwnProperty"); 103a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, "foo".hasOwnProperty(4), "foo 3 hasOwnProperty"); 104a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 105a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, "foo".hasOwnProperty("0"), 'foo "0" hasOwnProperty'); 106a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, "foo".hasOwnProperty("-1"), 'foo "-1" hasOwnProperty'); 107a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(true, "foo".hasOwnProperty("2"), 'foo "2" hasOwnProperty'); 108a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, "foo".hasOwnProperty("4"), 'foo "3" hasOwnProperty'); 109a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 110a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//assertEquals(true, 0 in "foo", "0 in"); 111a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//assertEquals(false, -1 in "foo", "-1 in"); 112a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//assertEquals(true, 2 in "foo", "2 in"); 113a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//assertEquals(false, 3 in "foo", "3 in"); 114a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 115a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//assertEquals(true, "0" in "foo", '"0" in'); 116a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//assertEquals(false, "-1" in "foo", '"-1" in'); 117a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//assertEquals(true, "2" in "foo", '"2" in'); 118a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block//assertEquals(false, "3" in "foo", '"3" in'); 119a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 120a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockdelete S[3]; 121a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("undefined", typeof(S[3])); 122a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, 3 in S); 123a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(false, "3" in S); 124a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 125a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar N = new Number(43); 126a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(43, N); 127a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockN[-2] = "Alpha"; 128a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("Alpha", N[-2]); 129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockN[0] = "Zappa"; 130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("Zappa", N[0]); 131a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals("Zappa", N["0"]); 132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 133a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar A = ["V", "e", "t", "t", "e", "r"]; 134a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar A2 = (A[0] = "v"); 135a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('v', A[0]); 136a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('v', A2); 137a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 138a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar S = new String("Onkel"); 139a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar S2 = (S[0] = 'o'); 140a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('O', S[0]); 141a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('o', S2); 142a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 143a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar s = "Tante"; 144a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar s2 = (s[0] = 't'); 145a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('T', s[0]); 146a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('t', s2); 147a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 148a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar S2 = (S[-2] = 'o'); 149a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('o', S[-2]); 150a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('o', S2); 151a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 152a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar s2 = (s[-2] = 't'); 153a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('undefined', typeof(s[-2])); 154a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals('t', s2); 155