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| 1 <!DOCTYPE html> |
| 2 <meta charset=utf-8> |
| 3 <title>Blob constructor</title> |
| 4 <link rel=help href="http://dev.w3.org/2006/webapi/FileAPI/#constructorBlob"> |
| 5 <link rel=help href="https://heycam.github.io/webidl/#es-union"> |
| 6 <link rel=help href="https://heycam.github.io/webidl/#es-dictionary"> |
| 7 <link rel=help href="https://heycam.github.io/webidl/#es-sequence"> |
| 8 <script src="../../../../resources/testharness.js"></script> |
| 9 <script src="../../../../resources/testharnessreport.js"></script> |
| 10 <script src="../support/Blob.js"></script> |
| 11 <p><strong><a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=23683">Discus
sion</a> |
| 12 is ongoing that will affect a number of the following tests.</strong> |
| 13 <div id="log"></div> |
| 14 <!-- used by "platform object that supports indexed properties" tests --> |
| 15 <iframe style="display:none"></iframe> |
| 16 <script> |
| 17 test(function() { |
| 18 assert_true("Blob" in window, "window should have a Blob property."); |
| 19 assert_equals(Blob.length, 0, "Blob.length should be 0."); |
| 20 assert_true(Blob instanceof Function, "Blob should be a function."); |
| 21 }, "Blob interface object"); |
| 22 |
| 23 // Step 1. |
| 24 test(function() { |
| 25 var blob = new Blob(); |
| 26 assert_true(blob instanceof Blob); |
| 27 assert_equals(String(blob), '[object Blob]'); |
| 28 assert_equals(blob.size, 0); |
| 29 assert_equals(blob.type, ""); |
| 30 }, "no-argument Blob constructor"); |
| 31 test(function() { |
| 32 var blob = Blob(); |
| 33 assert_true(blob instanceof Blob); |
| 34 assert_equals(blob.size, 0); |
| 35 assert_equals(blob.type, ""); |
| 36 }, "no-argument Blob constructor without 'new'"); |
| 37 test(function() { |
| 38 var blob = new Blob; |
| 39 assert_true(blob instanceof Blob); |
| 40 assert_equals(blob.size, 0); |
| 41 assert_equals(blob.type, ""); |
| 42 }, "no-argument Blob constructor without brackets"); |
| 43 |
| 44 // blobParts argument (WebIDL). |
| 45 test(function() { |
| 46 var args = [ |
| 47 null, |
| 48 undefined, |
| 49 true, |
| 50 false, |
| 51 0, |
| 52 1, |
| 53 1.5, |
| 54 "FAIL", |
| 55 new Date(), |
| 56 new RegExp(), |
| 57 ]; |
| 58 args.forEach(function(arg) { |
| 59 assert_throws(new TypeError(), function() { |
| 60 new Blob(arg); |
| 61 }, "Should throw for argument " + format_value(arg) + "."); |
| 62 }); |
| 63 }, "Passing non-objects, Dates and RegExps for blobParts should throw a TypeErro
r."); |
| 64 |
| 65 test_blob(function() { |
| 66 return new Blob({}); |
| 67 }, { |
| 68 expected: "", |
| 69 type: "", |
| 70 desc: "A plain object should be treated as a sequence for the blobParts argume
nt." |
| 71 }); |
| 72 test_blob(function() { |
| 73 return new Blob({ 0: "PASS", length: 1 }); |
| 74 }, { |
| 75 expected: "PASS", |
| 76 type: "", |
| 77 desc: "A plain object with a length property should be treated as a sequence f
or the blobParts argument." |
| 78 }); |
| 79 test_blob(function() { |
| 80 return new Blob(new String("xyz")); |
| 81 }, { |
| 82 expected: "xyz", |
| 83 type: "", |
| 84 desc: "A String object should be treated as a sequence for the blobParts argum
ent." |
| 85 }); |
| 86 test_blob(function() { |
| 87 return new Blob(new Uint8Array([1, 2, 3])); |
| 88 }, { |
| 89 expected: "123", |
| 90 type: "", |
| 91 desc: "A Uint8Array object should be treated as a sequence for the blobParts a
rgument." |
| 92 }); |
| 93 |
| 94 var test_error = { name: "test" }; |
| 95 |
| 96 test(function() { |
| 97 var obj = { |
| 98 get length() { throw test_error; } |
| 99 }; |
| 100 assert_throws(test_error, function() { |
| 101 new Blob(obj); |
| 102 }); |
| 103 }, "The length getter should be invoked and any exceptions should be propagated.
"); |
| 104 |
| 105 test_blob(function() { |
| 106 var element = document.createElement("div"); |
| 107 element.appendChild(document.createElement("div")); |
| 108 element.appendChild(document.createElement("p")); |
| 109 var list = element.children; |
| 110 Object.defineProperty(list, "length", { |
| 111 get: function() { throw test_error; } |
| 112 }); |
| 113 return new Blob(list); |
| 114 }, { |
| 115 expected: "[object HTMLDivElement][object HTMLParagraphElement]", |
| 116 type: "", |
| 117 desc: "A platform object that supports indexed properties should be treated as
a sequence for the blobParts argument (overwritten 'length'.)" |
| 118 }); |
| 119 |
| 120 test(function() { |
| 121 assert_throws(test_error, function() { |
| 122 var obj = { |
| 123 length: { |
| 124 valueOf: null, |
| 125 toString: function() { throw test_error; } |
| 126 } |
| 127 }; |
| 128 new Blob(obj); |
| 129 }); |
| 130 assert_throws(test_error, function() { |
| 131 var obj = { |
| 132 length: { valueOf: function() { throw test_error; } } |
| 133 }; |
| 134 new Blob(obj); |
| 135 }); |
| 136 }, "ToUint32 should be applied to the length and any exceptions should be propag
ated."); |
| 137 |
| 138 test(function() { |
| 139 var received = []; |
| 140 var obj = { |
| 141 get length() { |
| 142 received.push("length getter"); |
| 143 return { |
| 144 valueOf: function() { |
| 145 received.push("length valueOf"); |
| 146 return 3; |
| 147 } |
| 148 }; |
| 149 }, |
| 150 get 0() { |
| 151 received.push("0 getter"); |
| 152 return { |
| 153 toString: function() { |
| 154 received.push("0 toString"); |
| 155 return "a"; |
| 156 } |
| 157 }; |
| 158 }, |
| 159 get 1() { |
| 160 received.push("1 getter"); |
| 161 throw test_error; |
| 162 }, |
| 163 get 2() { |
| 164 received.push("2 getter"); |
| 165 assert_unreached("Should not call the getter for 2 if the getter for 1 thr
ew."); |
| 166 } |
| 167 }; |
| 168 assert_throws(test_error, function() { |
| 169 new Blob(obj); |
| 170 }); |
| 171 assert_array_equals(received, [ |
| 172 "length getter", |
| 173 "length valueOf", |
| 174 "0 getter", |
| 175 "0 toString", |
| 176 "1 getter" |
| 177 ]); |
| 178 }, "Getters and value conversions should happen in order until an exception is t
hrown."); |
| 179 |
| 180 // XXX should add tests edge cases of ToUint32(length) |
| 181 |
| 182 test(function() { |
| 183 assert_throws(test_error, function() { |
| 184 new Blob([{ toString: function() { throw test_error; } }]); |
| 185 }, "Throwing toString"); |
| 186 assert_throws(test_error, function() { |
| 187 new Blob([{ toString: undefined, valueOf: function() { throw test_error; } }
]); |
| 188 }, "Throwing valueOf"); |
| 189 assert_throws(test_error, function() { |
| 190 new Blob([{ |
| 191 toString: function() { throw test_error; }, |
| 192 valueOf: function() { assert_unreached("Should not call valueOf if toStrin
g is present."); } |
| 193 }]); |
| 194 }, "Throwing toString and valueOf"); |
| 195 assert_throws(new TypeError(), function() { |
| 196 new Blob([{toString: null, valueOf: null}]); |
| 197 }, "Null toString and valueOf"); |
| 198 }, "ToString should be called on elements of the blobParts array and any excepti
ons should be propagated."); |
| 199 |
| 200 test_blob(function() { |
| 201 var arr = [ |
| 202 { toString: function() { arr.pop(); return "PASS"; } }, |
| 203 { toString: function() { assert_unreached("Should have removed the second el
ement of the array rather than called toString() on it."); } } |
| 204 ]; |
| 205 return new Blob(arr); |
| 206 }, { |
| 207 expected: "PASSundefined", |
| 208 type: "", |
| 209 desc: "Changes to the blobParts array should be reflected in the returned Blob
(pop)." |
| 210 }); |
| 211 |
| 212 test_blob(function() { |
| 213 var arr = [ |
| 214 { |
| 215 toString: function() { |
| 216 if (arr.length === 3) { |
| 217 return "SS"; |
| 218 } |
| 219 arr.unshift({ |
| 220 toString: function() { |
| 221 assert_unreached("Should only access index 0 once."); |
| 222 } |
| 223 }); |
| 224 return "PA"; |
| 225 } |
| 226 }, |
| 227 { |
| 228 toString: function() { |
| 229 assert_unreached("Should not access the final element."); |
| 230 } |
| 231 } |
| 232 ]; |
| 233 return new Blob(arr); |
| 234 }, { |
| 235 expected: "PASS", |
| 236 type: "", |
| 237 desc: "Changes to the blobParts array should be reflected in the returned Blob
(unshift)." |
| 238 }); |
| 239 |
| 240 test_blob(function() { |
| 241 // https://www.w3.org/Bugs/Public/show_bug.cgi?id=17652 |
| 242 return new Blob([ |
| 243 null, |
| 244 undefined, |
| 245 true, |
| 246 false, |
| 247 0, |
| 248 1, |
| 249 new String("stringobject"), |
| 250 [], |
| 251 ['x', 'y'], |
| 252 {}, |
| 253 { 0: "FAIL", length: 1 }, |
| 254 { toString: function() { return "stringA"; } }, |
| 255 { toString: undefined, valueOf: function() { return "stringB"; } }, |
| 256 { valueOf: function() { assert_unreached("Should not call valueOf if toStrin
g is present on the prototype."); } } |
| 257 ]); |
| 258 }, { |
| 259 expected: "nullundefinedtruefalse01stringobjectx,y[object Object][object Objec
t]stringAstringB[object Object]", |
| 260 type: "", |
| 261 desc: "ToString should be called on elements of the blobParts array." |
| 262 }); |
| 263 |
| 264 test_blob(function() { |
| 265 return new Blob([ |
| 266 new ArrayBuffer(8) |
| 267 ]); |
| 268 }, { |
| 269 expected: "\0\0\0\0\0\0\0\0", |
| 270 type: "", |
| 271 desc: "ArrayBuffer elements of the blobParts array should be supported." |
| 272 }); |
| 273 |
| 274 test_blob(function() { |
| 275 return new Blob([ |
| 276 new Uint8Array([0x50, 0x41, 0x53, 0x53]), |
| 277 new Int8Array([0x50, 0x41, 0x53, 0x53]), |
| 278 new Uint16Array([0x4150, 0x5353]), |
| 279 new Int16Array([0x4150, 0x5353]), |
| 280 new Uint32Array([0x53534150]), |
| 281 new Int32Array([0x53534150]), |
| 282 new Float32Array([0xD341500000]) |
| 283 ]); |
| 284 }, { |
| 285 expected: "PASSPASSPASSPASSPASSPASSPASS", |
| 286 type: "", |
| 287 desc: "Passing typed arrays as elements of the blobParts array should work." |
| 288 }); |
| 289 test_blob(function() { |
| 290 return new Blob([ |
| 291 // 0x535 3415053534150 |
| 292 // 0x535 = 0b010100110101 -> Sign = +, Exponent = 1333 - 1023 = 310 |
| 293 // 0x13415053534150 * 2**(-52) |
| 294 // ==> 0x13415053534150 * 2**258 = 25102973727670367250052675631218218749219
13208671273727396467555337665343087229079989707079680 |
| 295 new Float64Array([2510297372767036725005267563121821874921913208671273727396
467555337665343087229079989707079680]) |
| 296 ]); |
| 297 }, { |
| 298 expected: "PASSPASS", |
| 299 type: "", |
| 300 desc: "Passing a Float64Array as element of the blobParts array should work." |
| 301 }); |
| 302 |
| 303 test_blob(function() { |
| 304 return new Blob(document.createElement("div")); |
| 305 }, { |
| 306 expected: "", |
| 307 type: "", |
| 308 desc: "Passing an element as the blobParts array should work." |
| 309 }); |
| 310 |
| 311 test_blob(function() { |
| 312 return new Blob(window); |
| 313 }, { |
| 314 expected: "[object Window]", |
| 315 type: "", |
| 316 desc: "Passing an platform object that supports indexed properties as the blob
Parts array should work (window)." |
| 317 }); |
| 318 test_blob(function() { |
| 319 window[0].toString = function() { return "foo"; }; |
| 320 return new Blob(window); |
| 321 }, { |
| 322 expected: "foo", |
| 323 type: "", |
| 324 desc: "Passing an platform object that supports indexed properties as the blob
Parts array should work (window with custom toString)." |
| 325 }); |
| 326 test_blob(function() { |
| 327 var select = document.createElement("select"); |
| 328 select.appendChild(document.createElement("option")); |
| 329 return new Blob(select); |
| 330 }, { |
| 331 expected: "[object HTMLOptionElement]", |
| 332 type: "", |
| 333 desc: "Passing an platform object that supports indexed properties as the blob
Parts array should work (select)." |
| 334 }); |
| 335 |
| 336 var t_ports = async_test("Passing a platform array object as the blobParts array
should work (MessagePort[])."); |
| 337 t_ports.step(function() { |
| 338 var channel = new MessageChannel(); |
| 339 channel.port2.onmessage = this.step_func(function(e) { |
| 340 var b_ports = new Blob(e.ports); |
| 341 assert_equals(b_ports.size, "[object MessagePort]".length); |
| 342 this.done(); |
| 343 }); |
| 344 var channel2 = new MessageChannel(); |
| 345 channel.port1.postMessage('', [channel2.port1]); |
| 346 }); |
| 347 |
| 348 test_blob(function() { |
| 349 var elm = document.createElement("div"); |
| 350 elm.setAttribute("foo", "bar"); |
| 351 return new Blob(elm.attributes); |
| 352 }, { |
| 353 expected: "[object Attr]", |
| 354 type: "", |
| 355 desc: "Passing a platform array object as the blobParts array should work (Att
r[])." |
| 356 }); |
| 357 |
| 358 test_blob(function() { |
| 359 var blob = new Blob(['foo']); |
| 360 return new Blob([blob, blob]); |
| 361 }, { |
| 362 expected: "foofoo", |
| 363 type: "", |
| 364 desc: "Array with two blobs" |
| 365 }); |
| 366 |
| 367 test_blob_binary(function() { |
| 368 var view = new Uint8Array([0, 255, 0]); |
| 369 return new Blob([view.buffer, view.buffer]); |
| 370 }, { |
| 371 expected: [0, 255, 0, 0, 255, 0], |
| 372 type: "", |
| 373 desc: "Array with two buffers" |
| 374 }); |
| 375 |
| 376 test_blob_binary(function() { |
| 377 var view = new Uint8Array([0, 255, 0, 4]); |
| 378 var blob = new Blob([view, view]); |
| 379 assert_equals(blob.size, 8); |
| 380 var view1 = new Uint16Array(view.buffer, 2); |
| 381 return new Blob([view1, view.buffer, view1]); |
| 382 }, { |
| 383 expected: [0, 4, 0, 255, 0, 4, 0, 4], |
| 384 type: "", |
| 385 desc: "Array with two bufferviews" |
| 386 }); |
| 387 |
| 388 test_blob(function() { |
| 389 var view = new Uint8Array([0]); |
| 390 var blob = new Blob(["fo"]); |
| 391 return new Blob([view.buffer, blob, "foo"]); |
| 392 }, { |
| 393 expected: "\0fofoo", |
| 394 type: "", |
| 395 desc: "Array with mixed types" |
| 396 }); |
| 397 |
| 398 // options argument |
| 399 test(function() { |
| 400 new Blob([], { endings: "invalidEnumValue" }); |
| 401 new Blob([], { endings: null }); |
| 402 new Blob([], { endings: undefined }); |
| 403 new Blob([], { endings: 0 }); |
| 404 new Blob([], { get endings() { assert_unreached("Should not call getter"); } }
); |
| 405 }, "The 'endings' property should be ignored."); |
| 406 |
| 407 test(function() { |
| 408 assert_throws(test_error, function() { |
| 409 new Blob([], { |
| 410 get type() { throw test_error; } |
| 411 }); |
| 412 }); |
| 413 assert_throws(test_error, function() { |
| 414 new Blob([], { |
| 415 type: { toString: function() { throw test_error; } } |
| 416 }); |
| 417 }); |
| 418 }, "options properties should be accessed in lexicographic order."); |
| 419 |
| 420 test(function() { |
| 421 assert_throws(test_error, function() { |
| 422 new Blob( |
| 423 [{ toString: function() { throw test_error } }], |
| 424 { |
| 425 get type() { assert_unreached("type getter should not be called."); } |
| 426 } |
| 427 ); |
| 428 }); |
| 429 }, "Arguments should be evaluated from left to right."); |
| 430 |
| 431 [ |
| 432 null, |
| 433 undefined, |
| 434 {}, |
| 435 { unrecognized: true }, |
| 436 /regex/, |
| 437 function() {} |
| 438 ].forEach(function(arg, idx) { |
| 439 test_blob(function() { |
| 440 return new Blob([], arg); |
| 441 }, { |
| 442 expected: "", |
| 443 type: "", |
| 444 desc: "Passing " + format_value(arg) + " (index " + idx + ") for options sho
uld use the defaults." |
| 445 }); |
| 446 test_blob(function() { |
| 447 return new Blob(["\na\r\nb\n\rc\r"], arg); |
| 448 }, { |
| 449 expected: "\na\r\nb\n\rc\r", |
| 450 type: "", |
| 451 desc: "Passing " + format_value(arg) + " (index " + idx + ") for options sho
uld use the defaults (with newlines)." |
| 452 }); |
| 453 }); |
| 454 |
| 455 test_blob(function() { |
| 456 return new Blob(["\na\r\nb\n\rc\r"], { endings: "transparent" }); |
| 457 }, { |
| 458 expected: "\na\r\nb\n\rc\r", |
| 459 type: "", |
| 460 desc: "Newlines should not change when endings is 'transparent'." |
| 461 }); |
| 462 test_blob(function() { |
| 463 return new Blob(["\na\r\nb\n\rc\r"], { endings: "native" }); |
| 464 }, { |
| 465 expected: "\na\r\nb\n\rc\r", |
| 466 type: "", |
| 467 desc: "Newlines should not change when endings is 'native'." |
| 468 }); |
| 469 |
| 470 var type_tests = [ |
| 471 // blobParts, type, expected type |
| 472 [[], '', ''], |
| 473 [[], 'a', 'a'], |
| 474 [[], 'A', 'a'], |
| 475 [[], 'text/html', 'text/html'], |
| 476 [[], 'TEXT/HTML', 'text/html'], |
| 477 [[], '\u00E5', ''], |
| 478 [[], '\uD801\uDC7E', ''], // U+1047E |
| 479 [[], ' image/gif ', ' image/gif '], |
| 480 [[], '\timage/gif\t', ''], |
| 481 [[], 'image/gif;\u007f', ''], |
| 482 [[], '\u0130mage/gif', ''], // uppercase i with dot |
| 483 [[], '\u0131mage/gif', ''], // lowercase dotless i |
| 484 [[], 'image/gif\u0000', ''], |
| 485 // check that type isn't changed based on sniffing |
| 486 [[0x3C, 0x48, 0x54, 0x4D, 0x4C, 0x3E], 'unknown/unknown', 'unknown/unknown'],
// "<HTML>" |
| 487 [[0x00, 0xFF], 'text/plain', 'text/plain'], |
| 488 [[0x47, 0x49, 0x46, 0x38, 0x39, 0x61], 'image/png', 'image/png'], // "GIF89a" |
| 489 ]; |
| 490 |
| 491 type_tests.forEach(function(t) { |
| 492 test(function() { |
| 493 var arr = new Uint8Array([t[0]]).buffer; |
| 494 var b = new Blob([arr], {type:t[1]}); |
| 495 assert_equals(b.type, t[2]); |
| 496 }, "Blob with type " + format_value(t[1])); |
| 497 }); |
| 498 </script> |
| OLD | NEW |
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Chromium Code Reviews
Issue 1236713002:
Import FileAPI tests from web-platform-tests (Closed)
Base URL: svn://svn.chromium.org/blink/trunk