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 // Test string keyed load IC. 39 for (var i = 0; i < 10; i++) { 40 assertEquals("F", foo[0]); 41 assertEquals("o", foo[1]); 42 assertEquals("o", foo[2]); 43 assertEquals("F", (foo[0] + "BarBazQuuxFooBarQuux")[0]); 44 } 45 46 assertEquals("F", foo["0" + ""], "string index"); 47 assertEquals("o", foo["1"], "string index"); 48 assertEquals("o", foo["2"], "string index"); 49 50 assertEquals("undefined", typeof(foo[3]), "out of range"); 51 // SpiderMonkey 1.5 fails this next one. So does FF 2.0.6. 52 assertEquals("undefined", typeof(foo[-1]), "known failure in SpiderMonkey 1.5"); 53 assertEquals("undefined", typeof(foo[-2]), "negative index"); 54 55 foo[0] = "f"; 56 assertEquals("Foo", foo); 57 58 foo[3] = "t"; 59 assertEquals("Foo", foo); 60 assertEquals("undefined", typeof(foo[3]), "out of range"); 61 assertEquals("undefined", typeof(foo[-2]), "negative index"); 62 63 var S = new String("foo"); 64 assertEquals(Object("foo"), S); 65 assertEquals("f", S[0], "string object"); 66 assertEquals("f", S["0"], "string object"); 67 S[0] = 'bente'; 68 assertEquals("f", S[0], "string object"); 69 assertEquals("f", S["0"], "string object"); 70 S[-2] = 'spider'; 71 assertEquals('spider', S[-2]); 72 S[3] = 'monkey'; 73 assertEquals('monkey', S[3]); 74 S['foo'] = 'Fu'; 75 assertEquals("Fu", S.foo); 76 77 // In FF this is ignored I think. In V8 it puts a property on the String object 78 // but you won't ever see it because it is hidden by the 0th character in the 79 // string. The net effect is pretty much the same. 80 S["0"] = 'bente'; 81 assertEquals("f", S[0], "string object"); 82 assertEquals("f", S["0"], "string object"); 83 84 assertEquals(true, 0 in S, "0 in"); 85 assertEquals(false, -1 in S, "-1 in"); 86 assertEquals(true, 2 in S, "2 in"); 87 assertEquals(true, 3 in S, "3 in"); 88 assertEquals(false, 4 in S, "3 in"); 89 90 assertEquals(true, "0" in S, '"0" in'); 91 assertEquals(false, "-1" in S, '"-1" in'); 92 assertEquals(true, "2" in S, '"2" in'); 93 assertEquals(true, "3" in S, '"3" in'); 94 assertEquals(false, "4" in S, '"3" in'); 95 96 assertEquals(true, S.hasOwnProperty(0), "0 hasOwnProperty"); 97 assertEquals(false, S.hasOwnProperty(-1), "-1 hasOwnProperty"); 98 assertEquals(true, S.hasOwnProperty(2), "2 hasOwnProperty"); 99 assertEquals(true, S.hasOwnProperty(3), "3 hasOwnProperty"); 100 assertEquals(false, S.hasOwnProperty(4), "3 hasOwnProperty"); 101 102 assertEquals(true, S.hasOwnProperty("0"), '"0" hasOwnProperty'); 103 assertEquals(false, S.hasOwnProperty("-1"), '"-1" hasOwnProperty'); 104 assertEquals(true, S.hasOwnProperty("2"), '"2" hasOwnProperty'); 105 assertEquals(true, S.hasOwnProperty("3"), '"3" hasOwnProperty'); 106 assertEquals(false, S.hasOwnProperty("4"), '"3" hasOwnProperty'); 107 108 assertEquals(true, "foo".hasOwnProperty(0), "foo 0 hasOwnProperty"); 109 assertEquals(false, "foo".hasOwnProperty(-1), "foo -1 hasOwnProperty"); 110 assertEquals(true, "foo".hasOwnProperty(2), "foo 2 hasOwnProperty"); 111 assertEquals(false, "foo".hasOwnProperty(4), "foo 3 hasOwnProperty"); 112 113 assertEquals(true, "foo".hasOwnProperty("0"), 'foo "0" hasOwnProperty'); 114 assertEquals(false, "foo".hasOwnProperty("-1"), 'foo "-1" hasOwnProperty'); 115 assertEquals(true, "foo".hasOwnProperty("2"), 'foo "2" hasOwnProperty'); 116 assertEquals(false, "foo".hasOwnProperty("4"), 'foo "3" hasOwnProperty'); 117 118 //assertEquals(true, 0 in "foo", "0 in"); 119 //assertEquals(false, -1 in "foo", "-1 in"); 120 //assertEquals(true, 2 in "foo", "2 in"); 121 //assertEquals(false, 3 in "foo", "3 in"); 122 // 123 //assertEquals(true, "0" in "foo", '"0" in'); 124 //assertEquals(false, "-1" in "foo", '"-1" in'); 125 //assertEquals(true, "2" in "foo", '"2" in'); 126 //assertEquals(false, "3" in "foo", '"3" in'); 127 128 delete S[3]; 129 assertEquals("undefined", typeof(S[3])); 130 assertEquals(false, 3 in S); 131 assertEquals(false, "3" in S); 132 133 var N = new Number(43); 134 assertEquals(Object(43), N); 135 N[-2] = "Alpha"; 136 assertEquals("Alpha", N[-2]); 137 N[0] = "Zappa"; 138 assertEquals("Zappa", N[0]); 139 assertEquals("Zappa", N["0"]); 140 141 var A = ["V", "e", "t", "t", "e", "r"]; 142 var A2 = (A[0] = "v"); 143 assertEquals('v', A[0]); 144 assertEquals('v', A2); 145 146 var S = new String("Onkel"); 147 var S2 = (S[0] = 'o'); 148 assertEquals('O', S[0]); 149 assertEquals('o', S2); 150 151 var s = "Tante"; 152 var s2 = (s[0] = 't'); 153 assertEquals('T', s[0]); 154 assertEquals('t', s2); 155 156 var S2 = (S[-2] = 'o'); 157 assertEquals('o', S[-2]); 158 assertEquals('o', S2); 159 160 var s2 = (s[-2] = 't'); 161 assertEquals('undefined', typeof(s[-2])); 162 assertEquals('t', s2); 163 164 // Make sure enough of the one-char string cache is filled. 165 var alpha = ['@']; 166 for (var i = 1; i < 128; i++) { 167 var c = String.fromCharCode(i); 168 alpha[i] = c[0]; 169 } 170 var alphaStr = alpha.join(""); 171 172 // Now test chars. 173 for (var i = 1; i < 128; i++) { 174 assertEquals(alpha[i], alphaStr[i]); 175 assertEquals(String.fromCharCode(i), alphaStr[i]); 176 } 177 178 // Test for keyed ic. 179 var foo = ['a12', ['a', 2, 'c'], 'a31', 42]; 180 var results = [1, 2, 3, NaN]; 181 for (var i = 0; i < 200; ++i) { 182 var index = Math.floor(i / 50); 183 var receiver = foo[index]; 184 var expected = results[index]; 185 var actual = +(receiver[1]); 186 assertEquals(expected, actual); 187 } 188 189 var keys = [0, '1', 2, 3.0, -1, 10]; 190 var str = 'abcd', arr = ['a', 'b', 'c', 'd', undefined, undefined]; 191 for (var i = 0; i < 300; ++i) { 192 var index = Math.floor(i / 50); 193 var key = keys[index]; 194 var expected = arr[index]; 195 var actual = str[key]; 196 assertEquals(expected, actual); 197 } 198 199 // Test heap number case. 200 var keys = [0, Math.floor(2) * 0.5]; 201 var str = 'ab', arr = ['a', 'b']; 202 for (var i = 0; i < 100; ++i) { 203 var index = Math.floor(i / 50); 204 var key = keys[index]; 205 var expected = arr[index]; 206 var actual = str[key]; 207 assertEquals(expected, actual); 208 } 209 210 // Test negative zero case. 211 var keys = [0, -0.0]; 212 var str = 'ab', arr = ['a', 'a']; 213 for (var i = 0; i < 100; ++i) { 214 var index = Math.floor(i / 50); 215 var key = keys[index]; 216 var expected = arr[index]; 217 var actual = str[key]; 218 assertEquals(expected, actual); 219 } 220 221 // Test "not-an-array-index" case. 222 var keys = [0, 0.5]; 223 var str = 'ab', arr = ['a', undefined]; 224 for (var i = 0; i < 100; ++i) { 225 var index = Math.floor(i / 50); 226 var key = keys[index]; 227 var expected = arr[index]; 228 var actual = str[key]; 229 assertEquals(expected, actual); 230 } 231 232 // Test out of range case. 233 var keys = [0, -1]; 234 var str = 'ab', arr = ['a', undefined]; 235 for (var i = 0; i < 100; ++i) { 236 var index = Math.floor(i / 50); 237 var key = keys[index]; 238 var expected = arr[index]; 239 var actual = str[key]; 240 assertEquals(expected, actual); 241 } 242 243 var keys = [0, 10]; 244 var str = 'ab', arr = ['a', undefined]; 245 for (var i = 0; i < 100; ++i) { 246 var index = Math.floor(i / 50); 247 var key = keys[index]; 248 var expected = arr[index]; 249 var actual = str[key]; 250 assertEquals(expected, actual); 251 } 252 253 // Test two byte string. 254 var str = '\u0427', arr = ['\u0427']; 255 for (var i = 0; i < 50; ++i) { 256 var expected = arr[0]; 257 var actual = str[0]; 258 assertEquals(expected, actual); 259 } 260
