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 /** 29 * @fileoverview Test indexing on strings with []. 30 */ 31 32 var foo = "Foo"; 33 assertEquals("Foo", foo); 34 assertEquals("F", foo[0]); 35 assertEquals("o", foo[1]); 36 assertEquals("o", foo[2]); 37 38 assertEquals("F", foo["0" + ""], "string index"); 39 assertEquals("o", foo["1"], "string index"); 40 assertEquals("o", foo["2"], "string index"); 41 42 assertEquals("undefined", typeof(foo[3]), "out of range"); 43 // SpiderMonkey 1.5 fails this next one. So does FF 2.0.6. 44 assertEquals("undefined", typeof(foo[-1]), "known failure in SpiderMonkey 1.5"); 45 assertEquals("undefined", typeof(foo[-2]), "negative index"); 46 47 foo[0] = "f"; 48 assertEquals("Foo", foo); 49 50 foo[3] = "t"; 51 assertEquals("Foo", foo); 52 assertEquals("undefined", typeof(foo[3]), "out of range"); 53 assertEquals("undefined", typeof(foo[-2]), "negative index"); 54 55 var S = new String("foo"); 56 assertEquals("foo", S); 57 assertEquals("f", S[0], "string object"); 58 assertEquals("f", S["0"], "string object"); 59 S[0] = 'bente'; 60 assertEquals("f", S[0], "string object"); 61 assertEquals("f", S["0"], "string object"); 62 S[-2] = 'spider'; 63 assertEquals('spider', S[-2]); 64 S[3] = 'monkey'; 65 assertEquals('monkey', S[3]); 66 S['foo'] = 'Fu'; 67 assertEquals("Fu", S.foo); 68 69 // In FF this is ignored I think. In V8 it puts a property on the String object 70 // but you won't ever see it because it is hidden by the 0th character in the 71 // string. The net effect is pretty much the same. 72 S["0"] = 'bente'; 73 assertEquals("f", S[0], "string object"); 74 assertEquals("f", S["0"], "string object"); 75 76 assertEquals(true, 0 in S, "0 in"); 77 assertEquals(false, -1 in S, "-1 in"); 78 assertEquals(true, 2 in S, "2 in"); 79 assertEquals(true, 3 in S, "3 in"); 80 assertEquals(false, 4 in S, "3 in"); 81 82 assertEquals(true, "0" in S, '"0" in'); 83 assertEquals(false, "-1" in S, '"-1" in'); 84 assertEquals(true, "2" in S, '"2" in'); 85 assertEquals(true, "3" in S, '"3" in'); 86 assertEquals(false, "4" in S, '"3" in'); 87 88 assertEquals(true, S.hasOwnProperty(0), "0 hasOwnProperty"); 89 assertEquals(false, S.hasOwnProperty(-1), "-1 hasOwnProperty"); 90 assertEquals(true, S.hasOwnProperty(2), "2 hasOwnProperty"); 91 assertEquals(true, S.hasOwnProperty(3), "3 hasOwnProperty"); 92 assertEquals(false, S.hasOwnProperty(4), "3 hasOwnProperty"); 93 94 assertEquals(true, S.hasOwnProperty("0"), '"0" hasOwnProperty'); 95 assertEquals(false, S.hasOwnProperty("-1"), '"-1" hasOwnProperty'); 96 assertEquals(true, S.hasOwnProperty("2"), '"2" hasOwnProperty'); 97 assertEquals(true, S.hasOwnProperty("3"), '"3" hasOwnProperty'); 98 assertEquals(false, S.hasOwnProperty("4"), '"3" hasOwnProperty'); 99 100 assertEquals(true, "foo".hasOwnProperty(0), "foo 0 hasOwnProperty"); 101 assertEquals(false, "foo".hasOwnProperty(-1), "foo -1 hasOwnProperty"); 102 assertEquals(true, "foo".hasOwnProperty(2), "foo 2 hasOwnProperty"); 103 assertEquals(false, "foo".hasOwnProperty(4), "foo 3 hasOwnProperty"); 104 105 assertEquals(true, "foo".hasOwnProperty("0"), 'foo "0" hasOwnProperty'); 106 assertEquals(false, "foo".hasOwnProperty("-1"), 'foo "-1" hasOwnProperty'); 107 assertEquals(true, "foo".hasOwnProperty("2"), 'foo "2" hasOwnProperty'); 108 assertEquals(false, "foo".hasOwnProperty("4"), 'foo "3" hasOwnProperty'); 109 110 //assertEquals(true, 0 in "foo", "0 in"); 111 //assertEquals(false, -1 in "foo", "-1 in"); 112 //assertEquals(true, 2 in "foo", "2 in"); 113 //assertEquals(false, 3 in "foo", "3 in"); 114 // 115 //assertEquals(true, "0" in "foo", '"0" in'); 116 //assertEquals(false, "-1" in "foo", '"-1" in'); 117 //assertEquals(true, "2" in "foo", '"2" in'); 118 //assertEquals(false, "3" in "foo", '"3" in'); 119 120 delete S[3]; 121 assertEquals("undefined", typeof(S[3])); 122 assertEquals(false, 3 in S); 123 assertEquals(false, "3" in S); 124 125 var N = new Number(43); 126 assertEquals(43, N); 127 N[-2] = "Alpha"; 128 assertEquals("Alpha", N[-2]); 129 N[0] = "Zappa"; 130 assertEquals("Zappa", N[0]); 131 assertEquals("Zappa", N["0"]); 132 133 var A = ["V", "e", "t", "t", "e", "r"]; 134 var A2 = (A[0] = "v"); 135 assertEquals('v', A[0]); 136 assertEquals('v', A2); 137 138 var S = new String("Onkel"); 139 var S2 = (S[0] = 'o'); 140 assertEquals('O', S[0]); 141 assertEquals('o', S2); 142 143 var s = "Tante"; 144 var s2 = (s[0] = 't'); 145 assertEquals('T', s[0]); 146 assertEquals('t', s2); 147 148 var S2 = (S[-2] = 'o'); 149 assertEquals('o', S[-2]); 150 assertEquals('o', S2); 151 152 var s2 = (s[-2] = 't'); 153 assertEquals('undefined', typeof(s[-2])); 154 assertEquals('t', s2); 155
