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 Check all sorts of borderline cases for charCodeAt. 30 */ 31 32 function Cons() { 33 return "Te" + "st testing 123"; 34 } 35 36 37 function Deep() { 38 var a = "T"; 39 a += "e"; 40 a += "s"; 41 a += "ting testing 123"; 42 return a; 43 } 44 45 46 function Slice() { 47 return "testing Testing testing 123456789012345".substring(8, 22); 48 } 49 50 51 function Flat() { 52 return "Testing testing 123"; 53 } 54 55 function Cons16() { 56 return "Te" + "\u1234t testing 123"; 57 } 58 59 60 function Deep16() { 61 var a = "T"; 62 a += "e"; 63 a += "\u1234"; 64 a += "ting testing 123"; 65 return a; 66 } 67 68 69 function Slice16Beginning() { 70 return "Te\u1234t testing testing 123".substring(0, 14); 71 } 72 73 74 function Slice16Middle() { 75 return "test Te\u1234t testing testing 123".substring(5, 19); 76 } 77 78 79 function Slice16End() { 80 return "test Te\u1234t".substring(5, 9); 81 } 82 83 84 function Flat16() { 85 return "Te\u1234ting testing 123"; 86 } 87 88 89 function Thing() { 90 } 91 92 93 function NotAString() { 94 var n = new Thing(); 95 n.toString = function() { return "Test"; }; 96 n.charCodeAt = String.prototype.charCodeAt; 97 return n; 98 } 99 100 101 function NotAString16() { 102 var n = new Thing(); 103 n.toString = function() { return "Te\u1234t"; }; 104 n.charCodeAt = String.prototype.charCodeAt; 105 return n; 106 } 107 108 109 function TestStringType(generator, sixteen) { 110 var g = generator; 111 var len = g().toString().length; 112 var t = sixteen ? "t" : "f" 113 t += generator.name; 114 assertTrue(isNaN(g().charCodeAt(-1e19)), 1 + t); 115 assertTrue(isNaN(g().charCodeAt(-0x80000001)), 2 + t); 116 assertTrue(isNaN(g().charCodeAt(-0x80000000)), 3 + t); 117 assertTrue(isNaN(g().charCodeAt(-0x40000000)), 4 + t); 118 assertTrue(isNaN(g().charCodeAt(-1)), 5 + t); 119 assertTrue(isNaN(g().charCodeAt(len)), 6 + t); 120 assertTrue(isNaN(g().charCodeAt(len + 1)), 7 + t); 121 assertTrue(isNaN(g().charCodeAt(0x3fffffff)), 8 + t); 122 assertTrue(isNaN(g().charCodeAt(0x7fffffff)), 9 + t); 123 assertTrue(isNaN(g().charCodeAt(0x80000000)), 10 + t); 124 assertTrue(isNaN(g().charCodeAt(1e9)), 11 + t); 125 assertEquals(84, g().charCodeAt(0), 12 + t); 126 assertEquals(84, g().charCodeAt("test"), 13 + t); 127 assertEquals(84, g().charCodeAt(""), 14 + t); 128 assertEquals(84, g().charCodeAt(null), 15 + t); 129 assertEquals(84, g().charCodeAt(undefined), 16 + t); 130 assertEquals(84, g().charCodeAt(), 17 + t); 131 assertEquals(84, g().charCodeAt(void 0), 18 + t); 132 assertEquals(84, g().charCodeAt(false), 19 + t); 133 assertEquals(101, g().charCodeAt(true), 20 + t); 134 assertEquals(101, g().charCodeAt(1), 21 + t); 135 assertEquals(sixteen ? 0x1234 : 115, g().charCodeAt(2), 22 + t); 136 assertEquals(116, g().charCodeAt(3), 23 + t); 137 assertEquals(101, g().charCodeAt(1.1), 24 + t); 138 assertEquals(sixteen ? 0x1234 : 115, g().charCodeAt(2.1718), 25 + t); 139 assertEquals(116, g().charCodeAt(3.14159), 26 + t); 140 } 141 142 143 TestStringType(Cons, false); 144 TestStringType(Deep, false); 145 TestStringType(Slice, false); 146 TestStringType(Flat, false); 147 TestStringType(NotAString, false); 148 TestStringType(Cons16, true); 149 TestStringType(Deep16, true); 150 TestStringType(Slice16Beginning, true); 151 TestStringType(Slice16Middle, true); 152 TestStringType(Slice16End, true); 153 TestStringType(Flat16, true); 154 TestStringType(NotAString16, true); 155 156 157 function StupidThing() { 158 // Doesn't return a string from toString! 159 this.toString = function() { return 42; } 160 this.charCodeAt = String.prototype.charCodeAt; 161 } 162 163 assertEquals(52, new StupidThing().charCodeAt(0), 27); 164 assertEquals(50, new StupidThing().charCodeAt(1), 28); 165 assertTrue(isNaN(new StupidThing().charCodeAt(2)), 29); 166 assertTrue(isNaN(new StupidThing().charCodeAt(-1)), 30); 167 168 169 // Medium (>255) and long (>65535) strings. 170 171 var medium = "12345678"; 172 medium += medium; // 16. 173 medium += medium; // 32. 174 medium += medium; // 64. 175 medium += medium; // 128. 176 medium += medium; // 256. 177 178 var long = medium; 179 long += long + long + long; // 1024. 180 long += long + long + long; // 4096. 181 long += long + long + long; // 16384. 182 long += long + long + long; // 65536. 183 184 assertTrue(isNaN(medium.charCodeAt(-1)), 31); 185 assertEquals(49, medium.charCodeAt(0), 32); 186 assertEquals(56, medium.charCodeAt(255), 33); 187 assertTrue(isNaN(medium.charCodeAt(256)), 34); 188 189 assertTrue(isNaN(long.charCodeAt(-1)), 35); 190 assertEquals(49, long.charCodeAt(0), 36); 191 assertEquals(56, long.charCodeAt(65535), 37); 192 assertTrue(isNaN(long.charCodeAt(65536)), 38); 193
