string-endswith.js (12469B)
1 /* 2 * Copyright (c) 2013 Mathias Bynens. All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20 * DEALINGS IN THE SOFTWARE. 21 */ 22 23 function assertThrows(fun, errorType) { 24 try { 25 fun(); 26 assertEq(true, false, "Expected error, but none was thrown"); 27 } catch (e) { 28 assertEq(e instanceof errorType, true, "Wrong error type thrown"); 29 } 30 } 31 assertEq(String.prototype.endsWith.length, 1); 32 assertEq(String.prototype.propertyIsEnumerable('endsWith'), false); 33 34 assertEq('undefined'.endsWith(), true); 35 assertEq('undefined'.endsWith(undefined), true); 36 assertEq('undefined'.endsWith(null), false); 37 assertEq('null'.endsWith(), false); 38 assertEq('null'.endsWith(undefined), false); 39 assertEq('null'.endsWith(null), true); 40 41 assertEq('abc'.endsWith(), false); 42 assertEq('abc'.endsWith(''), true); 43 assertEq('abc'.endsWith('\0'), false); 44 assertEq('abc'.endsWith('c'), true); 45 assertEq('abc'.endsWith('b'), false); 46 assertEq('abc'.endsWith('a'), false); 47 assertEq('abc'.endsWith('ab'), false); 48 assertEq('abc'.endsWith('bc'), true); 49 assertEq('abc'.endsWith('abc'), true); 50 assertEq('abc'.endsWith('bcd'), false); 51 assertEq('abc'.endsWith('abcd'), false); 52 assertEq('abc'.endsWith('bcde'), false); 53 54 assertEq('abc'.endsWith('', NaN), true); 55 assertEq('abc'.endsWith('\0', NaN), false); 56 assertEq('abc'.endsWith('c', NaN), false); 57 assertEq('abc'.endsWith('b', NaN), false); 58 assertEq('abc'.endsWith('a', NaN), false); 59 assertEq('abc'.endsWith('ab', NaN), false); 60 assertEq('abc'.endsWith('bc', NaN), false); 61 assertEq('abc'.endsWith('abc', NaN), false); 62 assertEq('abc'.endsWith('bcd', NaN), false); 63 assertEq('abc'.endsWith('abcd', NaN), false); 64 assertEq('abc'.endsWith('bcde', NaN), false); 65 66 assertEq('abc'.endsWith('', false), true); 67 assertEq('abc'.endsWith('\0', false), false); 68 assertEq('abc'.endsWith('c', false), false); 69 assertEq('abc'.endsWith('b', false), false); 70 assertEq('abc'.endsWith('a', false), false); 71 assertEq('abc'.endsWith('ab', false), false); 72 assertEq('abc'.endsWith('bc', false), false); 73 assertEq('abc'.endsWith('abc', false), false); 74 assertEq('abc'.endsWith('bcd', false), false); 75 assertEq('abc'.endsWith('abcd', false), false); 76 assertEq('abc'.endsWith('bcde', false), false); 77 78 assertEq('abc'.endsWith('', undefined), true); 79 assertEq('abc'.endsWith('\0', undefined), false); 80 assertEq('abc'.endsWith('c', undefined), true); 81 assertEq('abc'.endsWith('b', undefined), false); 82 assertEq('abc'.endsWith('a', undefined), false); 83 assertEq('abc'.endsWith('ab', undefined), false); 84 assertEq('abc'.endsWith('bc', undefined), true); 85 assertEq('abc'.endsWith('abc', undefined), true); 86 assertEq('abc'.endsWith('bcd', undefined), false); 87 assertEq('abc'.endsWith('abcd', undefined), false); 88 assertEq('abc'.endsWith('bcde', undefined), false); 89 90 assertEq('abc'.endsWith('', null), true); 91 assertEq('abc'.endsWith('\0', null), false); 92 assertEq('abc'.endsWith('c', null), false); 93 assertEq('abc'.endsWith('b', null), false); 94 assertEq('abc'.endsWith('a', null), false); 95 assertEq('abc'.endsWith('ab', null), false); 96 assertEq('abc'.endsWith('bc', null), false); 97 assertEq('abc'.endsWith('abc', null), false); 98 assertEq('abc'.endsWith('bcd', null), false); 99 assertEq('abc'.endsWith('abcd', null), false); 100 assertEq('abc'.endsWith('bcde', null), false); 101 102 assertEq('abc'.endsWith('', -Infinity), true); 103 assertEq('abc'.endsWith('\0', -Infinity), false); 104 assertEq('abc'.endsWith('c', -Infinity), false); 105 assertEq('abc'.endsWith('b', -Infinity), false); 106 assertEq('abc'.endsWith('a', -Infinity), false); 107 assertEq('abc'.endsWith('ab', -Infinity), false); 108 assertEq('abc'.endsWith('bc', -Infinity), false); 109 assertEq('abc'.endsWith('abc', -Infinity), false); 110 assertEq('abc'.endsWith('bcd', -Infinity), false); 111 assertEq('abc'.endsWith('abcd', -Infinity), false); 112 assertEq('abc'.endsWith('bcde', -Infinity), false); 113 114 assertEq('abc'.endsWith('', -1), true); 115 assertEq('abc'.endsWith('\0', -1), false); 116 assertEq('abc'.endsWith('c', -1), false); 117 assertEq('abc'.endsWith('b', -1), false); 118 assertEq('abc'.endsWith('a', -1), false); 119 assertEq('abc'.endsWith('ab', -1), false); 120 assertEq('abc'.endsWith('bc', -1), false); 121 assertEq('abc'.endsWith('abc', -1), false); 122 assertEq('abc'.endsWith('bcd', -1), false); 123 assertEq('abc'.endsWith('abcd', -1), false); 124 assertEq('abc'.endsWith('bcde', -1), false); 125 126 assertEq('abc'.endsWith('', -0), true); 127 assertEq('abc'.endsWith('\0', -0), false); 128 assertEq('abc'.endsWith('c', -0), false); 129 assertEq('abc'.endsWith('b', -0), false); 130 assertEq('abc'.endsWith('a', -0), false); 131 assertEq('abc'.endsWith('ab', -0), false); 132 assertEq('abc'.endsWith('bc', -0), false); 133 assertEq('abc'.endsWith('abc', -0), false); 134 assertEq('abc'.endsWith('bcd', -0), false); 135 assertEq('abc'.endsWith('abcd', -0), false); 136 assertEq('abc'.endsWith('bcde', -0), false); 137 138 assertEq('abc'.endsWith('', +0), true); 139 assertEq('abc'.endsWith('\0', +0), false); 140 assertEq('abc'.endsWith('c', +0), false); 141 assertEq('abc'.endsWith('b', +0), false); 142 assertEq('abc'.endsWith('a', +0), false); 143 assertEq('abc'.endsWith('ab', +0), false); 144 assertEq('abc'.endsWith('bc', +0), false); 145 assertEq('abc'.endsWith('abc', +0), false); 146 assertEq('abc'.endsWith('bcd', +0), false); 147 assertEq('abc'.endsWith('abcd', +0), false); 148 assertEq('abc'.endsWith('bcde', +0), false); 149 150 assertEq('abc'.endsWith('', 1), true); 151 assertEq('abc'.endsWith('\0', 1), false); 152 assertEq('abc'.endsWith('c', 1), false); 153 assertEq('abc'.endsWith('b', 1), false); 154 assertEq('abc'.endsWith('ab', 1), false); 155 assertEq('abc'.endsWith('bc', 1), false); 156 assertEq('abc'.endsWith('abc', 1), false); 157 assertEq('abc'.endsWith('bcd', 1), false); 158 assertEq('abc'.endsWith('abcd', 1), false); 159 assertEq('abc'.endsWith('bcde', 1), false); 160 161 assertEq('abc'.endsWith('', 2), true); 162 assertEq('abc'.endsWith('\0', 2), false); 163 assertEq('abc'.endsWith('c', 2), false); 164 assertEq('abc'.endsWith('b', 2), true); 165 assertEq('abc'.endsWith('ab', 2), true); 166 assertEq('abc'.endsWith('bc', 2), false); 167 assertEq('abc'.endsWith('abc', 2), false); 168 assertEq('abc'.endsWith('bcd', 2), false); 169 assertEq('abc'.endsWith('abcd', 2), false); 170 assertEq('abc'.endsWith('bcde', 2), false); 171 172 assertEq('abc'.endsWith('', +Infinity), true); 173 assertEq('abc'.endsWith('\0', +Infinity), false); 174 assertEq('abc'.endsWith('c', +Infinity), true); 175 assertEq('abc'.endsWith('b', +Infinity), false); 176 assertEq('abc'.endsWith('a', +Infinity), false); 177 assertEq('abc'.endsWith('ab', +Infinity), false); 178 assertEq('abc'.endsWith('bc', +Infinity), true); 179 assertEq('abc'.endsWith('abc', +Infinity), true); 180 assertEq('abc'.endsWith('bcd', +Infinity), false); 181 assertEq('abc'.endsWith('abcd', +Infinity), false); 182 assertEq('abc'.endsWith('bcde', +Infinity), false); 183 184 assertEq('abc'.endsWith('', true), true); 185 assertEq('abc'.endsWith('\0', true), false); 186 assertEq('abc'.endsWith('c', true), false); 187 assertEq('abc'.endsWith('b', true), false); 188 assertEq('abc'.endsWith('ab', true), false); 189 assertEq('abc'.endsWith('bc', true), false); 190 assertEq('abc'.endsWith('abc', true), false); 191 assertEq('abc'.endsWith('bcd', true), false); 192 assertEq('abc'.endsWith('abcd', true), false); 193 assertEq('abc'.endsWith('bcde', true), false); 194 195 assertEq('abc'.endsWith('', 'x'), true); 196 assertEq('abc'.endsWith('\0', 'x'), false); 197 assertEq('abc'.endsWith('c', 'x'), false); 198 assertEq('abc'.endsWith('b', 'x'), false); 199 assertEq('abc'.endsWith('a', 'x'), false); 200 assertEq('abc'.endsWith('ab', 'x'), false); 201 assertEq('abc'.endsWith('bc', 'x'), false); 202 assertEq('abc'.endsWith('abc', 'x'), false); 203 assertEq('abc'.endsWith('bcd', 'x'), false); 204 assertEq('abc'.endsWith('abcd', 'x'), false); 205 assertEq('abc'.endsWith('bcde', 'x'), false); 206 207 assertEq('[a-z]+(bar)?'.endsWith('(bar)?'), true); 208 assertThrows(function() { '[a-z]+(bar)?'.endsWith(/(bar)?/); }, TypeError); 209 assertEq('[a-z]+(bar)?'.endsWith('[a-z]+', 6), true); 210 assertThrows(function() { '[a-z]+(bar)?'.endsWith(/(bar)?/); }, TypeError); 211 assertThrows(function() { '[a-z]+/(bar)?/'.endsWith(/(bar)?/); }, TypeError); 212 var global = newGlobal(); 213 global.eval('this.re = /(bar)?/'); 214 assertThrows(function() { '[a-z]+/(bar)?/'.endsWith(global.re); }, TypeError); 215 216 // http://mathiasbynens.be/notes/javascript-unicode#poo-test 217 var string = 'I\xF1t\xEBrn\xE2ti\xF4n\xE0liz\xE6ti\xF8n\u2603\uD83D\uDCA9'; 218 assertEq(string.endsWith(''), true); 219 assertEq(string.endsWith('\xF1t\xEBr'), false); 220 assertEq(string.endsWith('\xF1t\xEBr', 5), true); 221 assertEq(string.endsWith('\xE0liz\xE6'), false); 222 assertEq(string.endsWith('\xE0liz\xE6', 16), true); 223 assertEq(string.endsWith('\xF8n\u2603\uD83D\uDCA9'), true); 224 assertEq(string.endsWith('\xF8n\u2603\uD83D\uDCA9', 23), true); 225 assertEq(string.endsWith('\u2603'), false); 226 assertEq(string.endsWith('\u2603', 21), true); 227 assertEq(string.endsWith('\uD83D\uDCA9'), true); 228 assertEq(string.endsWith('\uD83D\uDCA9', 23), true); 229 230 assertThrows(function() { String.prototype.endsWith.call(undefined); }, TypeError); 231 assertThrows(function() { String.prototype.endsWith.call(undefined, 'b'); }, TypeError); 232 assertThrows(function() { String.prototype.endsWith.call(undefined, 'b', 4); }, TypeError); 233 assertThrows(function() { String.prototype.endsWith.call(null); }, TypeError); 234 assertThrows(function() { String.prototype.endsWith.call(null, 'b'); }, TypeError); 235 assertThrows(function() { String.prototype.endsWith.call(null, 'b', 4); }, TypeError); 236 assertEq(String.prototype.endsWith.call(42, '2'), true); 237 assertEq(String.prototype.endsWith.call(42, '4'), false); 238 assertEq(String.prototype.endsWith.call(42, 'b', 4), false); 239 assertEq(String.prototype.endsWith.call(42, '2', 1), false); 240 assertEq(String.prototype.endsWith.call(42, '2', 4), true); 241 assertEq(String.prototype.endsWith.call({ 'toString': function() { return 'abc'; } }, 'b', 0), false); 242 assertEq(String.prototype.endsWith.call({ 'toString': function() { return 'abc'; } }, 'b', 1), false); 243 assertEq(String.prototype.endsWith.call({ 'toString': function() { return 'abc'; } }, 'b', 2), true); 244 assertThrows(function() { String.prototype.endsWith.call({ 'toString': function() { throw RangeError(); } }, /./); }, RangeError); 245 assertThrows(function() { String.prototype.endsWith.call({ 'toString': function() { return 'abc' } }, /./); }, TypeError); 246 247 assertThrows(function() { String.prototype.endsWith.apply(undefined); }, TypeError); 248 assertThrows(function() { String.prototype.endsWith.apply(undefined, ['b']); }, TypeError); 249 assertThrows(function() { String.prototype.endsWith.apply(undefined, ['b', 4]); }, TypeError); 250 assertThrows(function() { String.prototype.endsWith.apply(null); }, TypeError); 251 assertThrows(function() { String.prototype.endsWith.apply(null, ['b']); }, TypeError); 252 assertThrows(function() { String.prototype.endsWith.apply(null, ['b', 4]); }, TypeError); 253 assertEq(String.prototype.endsWith.apply(42, ['2']), true); 254 assertEq(String.prototype.endsWith.apply(42, ['4']), false); 255 assertEq(String.prototype.endsWith.apply(42, ['b', 4]), false); 256 assertEq(String.prototype.endsWith.apply(42, ['2', 1]), false); 257 assertEq(String.prototype.endsWith.apply(42, ['2', 4]), true); 258 assertEq(String.prototype.endsWith.apply({ 'toString': function() { return 'abc'; } }, ['b', 0]), false); 259 assertEq(String.prototype.endsWith.apply({ 'toString': function() { return 'abc'; } }, ['b', 1]), false); 260 assertEq(String.prototype.endsWith.apply({ 'toString': function() { return 'abc'; } }, ['b', 2]), true); 261 assertThrows(function() { String.prototype.endsWith.apply({ 'toString': function() { throw RangeError(); } }, [/./]); }, RangeError); 262 assertThrows(function() { String.prototype.endsWith.apply({ 'toString': function() { return 'abc' } }, [/./]); }, TypeError);