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| 1 // Copyright 2014 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 // Flags: --harmony-strings | |
| 29 | |
| 30 assertEquals(1, String.prototype.startsWith.length); | |
| 31 | |
| 32 var testString = "Hello World"; | |
| 33 assertTrue(testString.startsWith("")); | |
| 34 assertTrue(testString.startsWith("Hello")); | |
| 35 assertFalse(testString.startsWith("hello")); | |
| 36 assertFalse(testString.startsWith("Hello World!")); | |
| 37 assertFalse(testString.startsWith(null)); | |
| 38 assertFalse(testString.startsWith(undefined)); | |
| 39 | |
| 40 assertTrue("null".startsWith(null)); | |
| 41 assertTrue("undefined".startsWith(undefined)); | |
| 42 | |
| 43 var georgianUnicodeString = "\u10D0\u10D1\u10D2\u10D3\u10D4\u10D5\u10D6\u10D7"; | |
| 44 assertTrue(georgianUnicodeString.startsWith(georgianUnicodeString)); | |
| 45 assertTrue(georgianUnicodeString.startsWith("\u10D0\u10D1\u10D2")); | |
| 46 assertFalse(georgianUnicodeString.startsWith("\u10D8")); | |
| 47 | |
| 48 assertThrows("String.prototype.startsWith.call(null, 'test')", TypeError); | |
| 49 assertThrows("String.prototype.startsWith.call(null, null)", TypeError); | |
| 50 assertThrows("String.prototype.startsWith.call(undefined, undefined)", TypeError
); | |
| 51 | |
| 52 assertThrows("String.prototype.startsWith.apply(null, ['test'])", TypeError); | |
| 53 assertThrows("String.prototype.startsWith.apply(null, [null])", TypeError); | |
| 54 assertThrows("String.prototype.startsWith.apply(undefined, [undefined])", TypeEr
ror); | |
| 55 | |
| 56 var TEST_INPUT = [{ | |
| 57 msg: "Empty string", val: "" | |
| 58 }, { | |
| 59 msg: "Number 1234.34", val: 1234.34 | |
| 60 }, { | |
| 61 msg: "Integer number 0", val: 0 | |
| 62 }, { | |
| 63 msg: "Negative number -1", val: -1 | |
| 64 }, { | |
| 65 msg: "Boolean true", val: true | |
| 66 }, { | |
| 67 msg: "Boolean false", val: false | |
| 68 }, { | |
| 69 msg: "Empty array []", val: [] | |
| 70 }, { | |
| 71 msg: "Empty object {}", val: {} | |
| 72 }, { | |
| 73 msg: "Array of size 3", val: new Array(3) | |
| 74 }]; | |
| 75 | |
| 76 function testNonStringValues() { | |
| 77 var i = 0; | |
| 78 var l = TEST_INPUT.length; | |
| 79 | |
| 80 for (; i < l; i++) { | |
| 81 var e = TEST_INPUT[i]; | |
| 82 var v = e.val; | |
| 83 var s = String(v); | |
| 84 assertTrue(s.startsWith(v), e.msg); | |
| 85 assertTrue(String.prototype.startsWith.call(v, v), e.msg); | |
| 86 assertTrue(String.prototype.startsWith.apply(v, [v]), e.msg); | |
| 87 } | |
| 88 } | |
| 89 testNonStringValues(); | |
| 90 | |
| 91 var CustomType = function(value) { | |
| 92 this.startsWith = String.prototype.startsWith; | |
| 93 this.toString = function() { | |
| 94 return String(value); | |
| 95 } | |
| 96 }; | |
| 97 | |
| 98 function testCutomType() { | |
| 99 var i = 0; | |
| 100 var l = TEST_INPUT.length; | |
| 101 | |
| 102 for (; i < l; i++) { | |
| 103 var e = TEST_INPUT[i]; | |
| 104 var v = e.val; | |
| 105 var o = new CustomType(v); | |
| 106 assertTrue(o.startsWith(v), e.msg); | |
| 107 } | |
| 108 } | |
| 109 testCutomType(); | |
| 110 | |
| 111 // Test cases found in FF | |
| 112 assertTrue("abc".startsWith("abc")); | |
| 113 assertTrue("abcd".startsWith("abc")); | |
| 114 assertTrue("abc".startsWith("a")); | |
| 115 assertFalse("abc".startsWith("abcd")); | |
| 116 assertFalse("abc".startsWith("bcde")); | |
| 117 assertFalse("abc".startsWith("b")); | |
| 118 assertTrue("abc".startsWith("abc", 0)); | |
| 119 assertFalse("abc".startsWith("bc", 0)); | |
| 120 assertTrue("abc".startsWith("bc", 1)); | |
| 121 assertFalse("abc".startsWith("c", 1)); | |
| 122 assertFalse("abc".startsWith("abc", 1)); | |
| 123 assertTrue("abc".startsWith("c", 2)); | |
| 124 assertFalse("abc".startsWith("d", 2)); | |
| 125 assertFalse("abc".startsWith("dcd", 2)); | |
| 126 assertFalse("abc".startsWith("a", 42)); | |
| 127 assertFalse("abc".startsWith("a", Infinity)); | |
| 128 assertTrue("abc".startsWith("a", NaN)); | |
| 129 assertFalse("abc".startsWith("b", NaN)); | |
| 130 assertTrue("abc".startsWith("ab", -43)); | |
| 131 assertTrue("abc".startsWith("ab", -Infinity)); | |
| 132 assertFalse("abc".startsWith("bc", -42)); | |
| 133 assertFalse("abc".startsWith("bc", -Infinity)); | |
| 134 | |
| 135 // Test cases taken from | |
| 136 // https://github.com/mathiasbynens/String.prototype.startsWith/blob/master/test
s/tests.js | |
| 137 Object.prototype[1] = 2; // try to break `arguments[1]` | |
| 138 | |
| 139 assertEquals(String.prototype.startsWith.length, 1); | |
| 140 assertEquals(String.prototype.propertyIsEnumerable("startsWith"), false); | |
| 141 | |
| 142 assertEquals("undefined".startsWith(), true); | |
| 143 assertEquals("undefined".startsWith(undefined), true); | |
| 144 assertEquals("undefined".startsWith(null), false); | |
| 145 assertEquals("null".startsWith(), false); | |
| 146 assertEquals("null".startsWith(undefined), false); | |
| 147 assertEquals("null".startsWith(null), true); | |
| 148 | |
| 149 assertEquals("abc".startsWith(), false); | |
| 150 assertEquals("abc".startsWith(""), true); | |
| 151 assertEquals("abc".startsWith("\0"), false); | |
| 152 assertEquals("abc".startsWith("a"), true); | |
| 153 assertEquals("abc".startsWith("b"), false); | |
| 154 assertEquals("abc".startsWith("ab"), true); | |
| 155 assertEquals("abc".startsWith("bc"), false); | |
| 156 assertEquals("abc".startsWith("abc"), true); | |
| 157 assertEquals("abc".startsWith("bcd"), false); | |
| 158 assertEquals("abc".startsWith("abcd"), false); | |
| 159 assertEquals("abc".startsWith("bcde"), false); | |
| 160 | |
| 161 assertEquals("abc".startsWith("", NaN), true); | |
| 162 assertEquals("abc".startsWith("\0", NaN), false); | |
| 163 assertEquals("abc".startsWith("a", NaN), true); | |
| 164 assertEquals("abc".startsWith("b", NaN), false); | |
| 165 assertEquals("abc".startsWith("ab", NaN), true); | |
| 166 assertEquals("abc".startsWith("bc", NaN), false); | |
| 167 assertEquals("abc".startsWith("abc", NaN), true); | |
| 168 assertEquals("abc".startsWith("bcd", NaN), false); | |
| 169 assertEquals("abc".startsWith("abcd", NaN), false); | |
| 170 assertEquals("abc".startsWith("bcde", NaN), false); | |
| 171 | |
| 172 assertEquals("abc".startsWith("", false), true); | |
| 173 assertEquals("abc".startsWith("\0", false), false); | |
| 174 assertEquals("abc".startsWith("a", false), true); | |
| 175 assertEquals("abc".startsWith("b", false), false); | |
| 176 assertEquals("abc".startsWith("ab", false), true); | |
| 177 assertEquals("abc".startsWith("bc", false), false); | |
| 178 assertEquals("abc".startsWith("abc", false), true); | |
| 179 assertEquals("abc".startsWith("bcd", false), false); | |
| 180 assertEquals("abc".startsWith("abcd", false), false); | |
| 181 assertEquals("abc".startsWith("bcde", false), false); | |
| 182 | |
| 183 assertEquals("abc".startsWith("", undefined), true); | |
| 184 assertEquals("abc".startsWith("\0", undefined), false); | |
| 185 assertEquals("abc".startsWith("a", undefined), true); | |
| 186 assertEquals("abc".startsWith("b", undefined), false); | |
| 187 assertEquals("abc".startsWith("ab", undefined), true); | |
| 188 assertEquals("abc".startsWith("bc", undefined), false); | |
| 189 assertEquals("abc".startsWith("abc", undefined), true); | |
| 190 assertEquals("abc".startsWith("bcd", undefined), false); | |
| 191 assertEquals("abc".startsWith("abcd", undefined), false); | |
| 192 assertEquals("abc".startsWith("bcde", undefined), false); | |
| 193 | |
| 194 assertEquals("abc".startsWith("", null), true); | |
| 195 assertEquals("abc".startsWith("\0", null), false); | |
| 196 assertEquals("abc".startsWith("a", null), true); | |
| 197 assertEquals("abc".startsWith("b", null), false); | |
| 198 assertEquals("abc".startsWith("ab", null), true); | |
| 199 assertEquals("abc".startsWith("bc", null), false); | |
| 200 assertEquals("abc".startsWith("abc", null), true); | |
| 201 assertEquals("abc".startsWith("bcd", null), false); | |
| 202 assertEquals("abc".startsWith("abcd", null), false); | |
| 203 assertEquals("abc".startsWith("bcde", null), false); | |
| 204 | |
| 205 assertEquals("abc".startsWith("", -Infinity), true); | |
| 206 assertEquals("abc".startsWith("\0", -Infinity), false); | |
| 207 assertEquals("abc".startsWith("a", -Infinity), true); | |
| 208 assertEquals("abc".startsWith("b", -Infinity), false); | |
| 209 assertEquals("abc".startsWith("ab", -Infinity), true); | |
| 210 assertEquals("abc".startsWith("bc", -Infinity), false); | |
| 211 assertEquals("abc".startsWith("abc", -Infinity), true); | |
| 212 assertEquals("abc".startsWith("bcd", -Infinity), false); | |
| 213 assertEquals("abc".startsWith("abcd", -Infinity), false); | |
| 214 assertEquals("abc".startsWith("bcde", -Infinity), false); | |
| 215 | |
| 216 assertEquals("abc".startsWith("", -1), true); | |
| 217 assertEquals("abc".startsWith("\0", -1), false); | |
| 218 assertEquals("abc".startsWith("a", -1), true); | |
| 219 assertEquals("abc".startsWith("b", -1), false); | |
| 220 assertEquals("abc".startsWith("ab", -1), true); | |
| 221 assertEquals("abc".startsWith("bc", -1), false); | |
| 222 assertEquals("abc".startsWith("abc", -1), true); | |
| 223 assertEquals("abc".startsWith("bcd", -1), false); | |
| 224 assertEquals("abc".startsWith("abcd", -1), false); | |
| 225 assertEquals("abc".startsWith("bcde", -1), false); | |
| 226 | |
| 227 assertEquals("abc".startsWith("", -0), true); | |
| 228 assertEquals("abc".startsWith("\0", -0), false); | |
| 229 assertEquals("abc".startsWith("a", -0), true); | |
| 230 assertEquals("abc".startsWith("b", -0), false); | |
| 231 assertEquals("abc".startsWith("ab", -0), true); | |
| 232 assertEquals("abc".startsWith("bc", -0), false); | |
| 233 assertEquals("abc".startsWith("abc", -0), true); | |
| 234 assertEquals("abc".startsWith("bcd", -0), false); | |
| 235 assertEquals("abc".startsWith("abcd", -0), false); | |
| 236 assertEquals("abc".startsWith("bcde", -0), false); | |
| 237 | |
| 238 assertEquals("abc".startsWith("", +0), true); | |
| 239 assertEquals("abc".startsWith("\0", +0), false); | |
| 240 assertEquals("abc".startsWith("a", +0), true); | |
| 241 assertEquals("abc".startsWith("b", +0), false); | |
| 242 assertEquals("abc".startsWith("ab", +0), true); | |
| 243 assertEquals("abc".startsWith("bc", +0), false); | |
| 244 assertEquals("abc".startsWith("abc", +0), true); | |
| 245 assertEquals("abc".startsWith("bcd", +0), false); | |
| 246 assertEquals("abc".startsWith("abcd", +0), false); | |
| 247 assertEquals("abc".startsWith("bcde", +0), false); | |
| 248 | |
| 249 assertEquals("abc".startsWith("", 1), true); | |
| 250 assertEquals("abc".startsWith("\0", 1), false); | |
| 251 assertEquals("abc".startsWith("a", 1), false); | |
| 252 assertEquals("abc".startsWith("b", 1), true); | |
| 253 assertEquals("abc".startsWith("ab", 1), false); | |
| 254 assertEquals("abc".startsWith("bc", 1), true); | |
| 255 assertEquals("abc".startsWith("abc", 1), false); | |
| 256 assertEquals("abc".startsWith("bcd", 1), false); | |
| 257 assertEquals("abc".startsWith("abcd", 1), false); | |
| 258 assertEquals("abc".startsWith("bcde", 1), false); | |
| 259 | |
| 260 assertEquals("abc".startsWith("", +Infinity), true); | |
| 261 assertEquals("abc".startsWith("\0", +Infinity), false); | |
| 262 assertEquals("abc".startsWith("a", +Infinity), false); | |
| 263 assertEquals("abc".startsWith("b", +Infinity), false); | |
| 264 assertEquals("abc".startsWith("ab", +Infinity), false); | |
| 265 assertEquals("abc".startsWith("bc", +Infinity), false); | |
| 266 assertEquals("abc".startsWith("abc", +Infinity), false); | |
| 267 assertEquals("abc".startsWith("bcd", +Infinity), false); | |
| 268 assertEquals("abc".startsWith("abcd", +Infinity), false); | |
| 269 assertEquals("abc".startsWith("bcde", +Infinity), false); | |
| 270 | |
| 271 assertEquals("abc".startsWith("", true), true); | |
| 272 assertEquals("abc".startsWith("\0", true), false); | |
| 273 assertEquals("abc".startsWith("a", true), false); | |
| 274 assertEquals("abc".startsWith("b", true), true); | |
| 275 assertEquals("abc".startsWith("ab", true), false); | |
| 276 assertEquals("abc".startsWith("bc", true), true); | |
| 277 assertEquals("abc".startsWith("abc", true), false); | |
| 278 assertEquals("abc".startsWith("bcd", true), false); | |
| 279 assertEquals("abc".startsWith("abcd", true), false); | |
| 280 assertEquals("abc".startsWith("bcde", true), false); | |
| 281 | |
| 282 assertEquals("abc".startsWith("", "x"), true); | |
| 283 assertEquals("abc".startsWith("\0", "x"), false); | |
| 284 assertEquals("abc".startsWith("a", "x"), true); | |
| 285 assertEquals("abc".startsWith("b", "x"), false); | |
| 286 assertEquals("abc".startsWith("ab", "x"), true); | |
| 287 assertEquals("abc".startsWith("bc", "x"), false); | |
| 288 assertEquals("abc".startsWith("abc", "x"), true); | |
| 289 assertEquals("abc".startsWith("bcd", "x"), false); | |
| 290 assertEquals("abc".startsWith("abcd", "x"), false); | |
| 291 assertEquals("abc".startsWith("bcde", "x"), false); | |
| 292 | |
| 293 assertEquals("[a-z]+(bar)?".startsWith("[a-z]+"), true); | |
| 294 assertThrows(function() { "[a-z]+(bar)?".startsWith(/[a-z]+/); }, TypeError); | |
| 295 assertEquals("[a-z]+(bar)?".startsWith("(bar)?", 6), true); | |
| 296 assertThrows(function() { "[a-z]+(bar)?".startsWith(/(bar)?/); }, TypeError); | |
| 297 assertThrows(function() { "[a-z]+/(bar)?/".startsWith(/(bar)?/); }, TypeError); | |
| 298 | |
| 299 // http://mathiasbynens.be/notes/javascript-unicode#poo-test | |
| 300 var string = "I\xF1t\xEBrn\xE2ti\xF4n\xE0liz\xE6ti\xF8n\u2603\uD83D\uDCA9"; | |
| 301 assertEquals(string.startsWith(""), true); | |
| 302 assertEquals(string.startsWith("\xF1t\xEBr"), false); | |
| 303 assertEquals(string.startsWith("\xF1t\xEBr", 1), true); | |
| 304 assertEquals(string.startsWith("\xE0liz\xE6"), false); | |
| 305 assertEquals(string.startsWith("\xE0liz\xE6", 11), true); | |
| 306 assertEquals(string.startsWith("\xF8n\u2603\uD83D\uDCA9"), false); | |
| 307 assertEquals(string.startsWith("\xF8n\u2603\uD83D\uDCA9", 18), true); | |
| 308 assertEquals(string.startsWith("\u2603"), false); | |
| 309 assertEquals(string.startsWith("\u2603", 20), true); | |
| 310 assertEquals(string.startsWith("\uD83D\uDCA9"), false); | |
| 311 assertEquals(string.startsWith("\uD83D\uDCA9", 21), true); | |
| 312 | |
| 313 assertThrows(function() { | |
| 314 String.prototype.startsWith.call(undefined); | |
| 315 }, TypeError); | |
| 316 assertThrows(function() { | |
| 317 String.prototype.startsWith.call(undefined, "b"); | |
| 318 }, TypeError); | |
| 319 assertThrows(function() { | |
| 320 String.prototype.startsWith.call(undefined, "b", 4); | |
| 321 }, TypeError); | |
| 322 assertThrows(function() { | |
| 323 String.prototype.startsWith.call(null); | |
| 324 }, TypeError); | |
| 325 assertThrows(function() { | |
| 326 String.prototype.startsWith.call(null, "b"); | |
| 327 }, TypeError); | |
| 328 assertThrows(function() { | |
| 329 String.prototype.startsWith.call(null, "b", 4); | |
| 330 }, TypeError); | |
| 331 assertEquals(String.prototype.startsWith.call(42, "2"), false); | |
| 332 assertEquals(String.prototype.startsWith.call(42, "4"), true); | |
| 333 assertEquals(String.prototype.startsWith.call(42, "b", 4), false); | |
| 334 assertEquals(String.prototype.startsWith.call(42, "2", 1), true); | |
| 335 assertEquals(String.prototype.startsWith.call(42, "2", 4), false); | |
| 336 assertEquals(String.prototype.startsWith.call({ | |
| 337 "toString": function() { return "abc"; } | |
| 338 }, "b", 0), false); | |
| 339 assertEquals(String.prototype.startsWith.call({ | |
| 340 "toString": function() { return "abc"; } | |
| 341 }, "b", 1), true); | |
| 342 assertEquals(String.prototype.startsWith.call({ | |
| 343 "toString": function() { return "abc"; } | |
| 344 }, "b", 2), false); | |
| 345 assertThrows(function() { | |
| 346 String.prototype.startsWith.call({ | |
| 347 "toString": function() { throw RangeError(); } | |
| 348 }, /./); | |
| 349 }, RangeError); | |
| 350 assertThrows(function() { | |
| 351 String.prototype.startsWith.call({ | |
| 352 "toString": function() { return "abc"; } | |
| 353 }, /./); | |
| 354 }, TypeError); | |
| 355 | |
| 356 assertThrows(function() { | |
| 357 String.prototype.startsWith.apply(undefined); | |
| 358 }, TypeError); | |
| 359 assertThrows(function() { | |
| 360 String.prototype.startsWith.apply(undefined, ["b"]); | |
| 361 }, TypeError); | |
| 362 assertThrows(function() { | |
| 363 String.prototype.startsWith.apply(undefined, ["b", 4]); | |
| 364 }, TypeError); | |
| 365 assertThrows(function() { | |
| 366 String.prototype.startsWith.apply(null); | |
| 367 }, TypeError); | |
| 368 assertThrows(function() { | |
| 369 String.prototype.startsWith.apply(null, ["b"]); | |
| 370 }, TypeError); | |
| 371 assertThrows(function() { | |
| 372 String.prototype.startsWith.apply(null, ["b", 4]); | |
| 373 }, TypeError); | |
| 374 assertEquals(String.prototype.startsWith.apply(42, ["2"]), false); | |
| 375 assertEquals(String.prototype.startsWith.apply(42, ["4"]), true); | |
| 376 assertEquals(String.prototype.startsWith.apply(42, ["b", 4]), false); | |
| 377 assertEquals(String.prototype.startsWith.apply(42, ["2", 1]), true); | |
| 378 assertEquals(String.prototype.startsWith.apply(42, ["2", 4]), false); | |
| 379 assertEquals(String.prototype.startsWith.apply({ | |
| 380 "toString": function() { | |
| 381 return "abc"; | |
| 382 } | |
| 383 }, ["b", 0]), false); | |
| 384 assertEquals(String.prototype.startsWith.apply({ | |
| 385 "toString": function() { | |
| 386 return "abc"; | |
| 387 } | |
| 388 }, ["b", 1]), true); | |
| 389 assertEquals(String.prototype.startsWith.apply({ | |
| 390 "toString": function() { | |
| 391 return "abc"; | |
| 392 } | |
| 393 }, ["b", 2]), false); | |
| 394 assertThrows(function() { | |
| 395 String.prototype.startsWith.apply({ | |
| 396 "toString": function() { throw RangeError(); } | |
| 397 }, [/./]); | |
| 398 }, RangeError); | |
| 399 assertThrows(function() { | |
| 400 String.prototype.startsWith.apply({ | |
| 401 "toString": function() { return "abc"; } | |
| 402 }, [/./]); | |
| 403 }, TypeError); | |
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Chromium Code Reviews
Issue 1024813002:
Remove harmony-strings flag. (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master