1 // Copyright 2013 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
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.
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,
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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.
30 function TestByteLength(param, expectedByteLength) {
31 var ab = new ArrayBuffer(param);
32 assertSame(expectedByteLength, ab.byteLength);
35 function TestArrayBufferCreation() {
37 TestByteLength(256, 256);
38 TestByteLength(2.567, 2);
40 TestByteLength("abc", 0);
44 assertThrows(function() { new ArrayBuffer(-10); }, RangeError);
45 assertThrows(function() { new ArrayBuffer(-2.567); }, RangeError);
47 /* TODO[dslomov]: Reenable the test
48 assertThrows(function() {
49 var ab1 = new ArrayBuffer(0xFFFFFFFFFFFF)
53 var ab = new ArrayBuffer();
54 assertSame(0, ab.byteLength);
57 TestArrayBufferCreation();
59 function TestByteLengthNotWritable() {
60 var ab = new ArrayBuffer(1024);
61 assertSame(1024, ab.byteLength);
63 assertThrows(function() { "use strict"; ab.byteLength = 42; }, TypeError);
66 TestByteLengthNotWritable();
68 function TestSlice(expectedResultLen, initialLen, start, end) {
69 var ab = new ArrayBuffer(initialLen);
70 var a1 = new Uint8Array(ab);
71 for (var i = 0; i < a1.length; i++) {
74 var slice = ab.slice(start, end);
75 assertSame(expectedResultLen, slice.byteLength);
76 var a2 = new Uint8Array(slice);
77 for (var i = 0; i < a2.length; i++) {
78 assertSame(0xCA, a2[i]);
82 function TestArrayBufferSlice() {
83 var ab = new ArrayBuffer(1024);
84 var ab1 = ab.slice(512, 1024);
85 assertSame(512, ab1.byteLength);
87 TestSlice(512, 1024, 512, 1024);
88 TestSlice(512, 1024, 512);
90 TestSlice(0, 0, 1, 20);
91 TestSlice(100, 100, 0, 100);
92 TestSlice(100, 100, 0, 1000);
94 TestSlice(0, 100, 5, 1);
96 TestSlice(1, 100, -11, -10);
97 TestSlice(9, 100, -10, 99);
98 TestSlice(0, 100, -10, 80);
99 TestSlice(10, 100, 80, -10);
101 TestSlice(10, 100, 90, "100");
102 TestSlice(10, 100, "90", "100");
104 TestSlice(0, 100, 90, "abc");
105 TestSlice(10, 100, "abc", 10);
107 TestSlice(10, 100, 0.96, 10.96);
108 TestSlice(10, 100, 0.96, 10.01);
109 TestSlice(10, 100, 0.01, 10.01);
110 TestSlice(10, 100, 0.01, 10.96);
112 TestSlice(10, 100, 90);
113 TestSlice(10, 100, -10);
116 TestArrayBufferSlice();
120 function TestTypedArray(constr, elementSize, typicalElement) {
121 assertSame(elementSize, constr.BYTES_PER_ELEMENT);
123 var ab = new ArrayBuffer(256*elementSize);
125 var a0 = new constr(30);
126 assertTrue(ArrayBuffer.isView(a0));
127 assertSame(elementSize, a0.BYTES_PER_ELEMENT);
128 assertSame(30, a0.length);
129 assertSame(30*elementSize, a0.byteLength);
130 assertSame(0, a0.byteOffset);
131 assertSame(30*elementSize, a0.buffer.byteLength);
133 var aLen0 = new constr(0);
134 assertSame(elementSize, aLen0.BYTES_PER_ELEMENT);
135 assertSame(0, aLen0.length);
136 assertSame(0, aLen0.byteLength);
137 assertSame(0, aLen0.byteOffset);
138 assertSame(0, aLen0.buffer.byteLength);
140 var aOverBufferLen0 = new constr(ab, 128*elementSize, 0);
141 assertSame(ab, aOverBufferLen0.buffer);
142 assertSame(elementSize, aOverBufferLen0.BYTES_PER_ELEMENT);
143 assertSame(0, aOverBufferLen0.length);
144 assertSame(0, aOverBufferLen0.byteLength);
145 assertSame(128*elementSize, aOverBufferLen0.byteOffset);
147 var a1 = new constr(ab, 128*elementSize, 128);
148 assertSame(ab, a1.buffer);
149 assertSame(elementSize, a1.BYTES_PER_ELEMENT);
150 assertSame(128, a1.length);
151 assertSame(128*elementSize, a1.byteLength);
152 assertSame(128*elementSize, a1.byteOffset);
155 var a2 = new constr(ab, 64*elementSize, 128);
156 assertSame(ab, a2.buffer);
157 assertSame(elementSize, a2.BYTES_PER_ELEMENT);
158 assertSame(128, a2.length);
159 assertSame(128*elementSize, a2.byteLength);
160 assertSame(64*elementSize, a2.byteOffset);
162 var a3 = new constr(ab, 192*elementSize);
163 assertSame(ab, a3.buffer);
164 assertSame(64, a3.length);
165 assertSame(64*elementSize, a3.byteLength);
166 assertSame(192*elementSize, a3.byteOffset);
168 var a4 = new constr(ab);
169 assertSame(ab, a4.buffer);
170 assertSame(256, a4.length);
171 assertSame(256*elementSize, a4.byteLength);
172 assertSame(0, a4.byteOffset);
176 for (i = 0; i < 128; i++) {
177 a1[i] = typicalElement;
180 for (i = 0; i < 128; i++) {
181 assertSame(typicalElement, a1[i]);
184 for (i = 0; i < 64; i++) {
185 assertSame(0, a2[i]);
188 for (i = 64; i < 128; i++) {
189 assertSame(typicalElement, a2[i]);
192 for (i = 0; i < 64; i++) {
193 assertSame(typicalElement, a3[i]);
196 for (i = 0; i < 128; i++) {
197 assertSame(0, a4[i]);
200 for (i = 128; i < 256; i++) {
201 assertSame(typicalElement, a4[i]);
204 var aAtTheEnd = new constr(ab, 256*elementSize);
205 assertSame(elementSize, aAtTheEnd.BYTES_PER_ELEMENT);
206 assertSame(0, aAtTheEnd.length);
207 assertSame(0, aAtTheEnd.byteLength);
208 assertSame(256*elementSize, aAtTheEnd.byteOffset);
210 assertThrows(function () { new constr(ab, 257*elementSize); }, RangeError);
212 function () { new constr(ab, 128*elementSize, 192); },
215 if (elementSize !== 1) {
216 assertThrows(function() { new constr(ab, 128*elementSize - 1, 10); },
218 var unalignedArrayBuffer = new ArrayBuffer(10*elementSize + 1);
219 var goodArray = new constr(unalignedArrayBuffer, 0, 10);
220 assertSame(10, goodArray.length);
221 assertSame(10*elementSize, goodArray.byteLength);
222 assertThrows(function() { new constr(unalignedArrayBuffer)}, RangeError);
223 assertThrows(function() { new constr(unalignedArrayBuffer, 5*elementSize)},
227 var aFromString = new constr("30");
228 assertSame(elementSize, aFromString.BYTES_PER_ELEMENT);
229 assertSame(30, aFromString.length);
230 assertSame(30*elementSize, aFromString.byteLength);
231 assertSame(0, aFromString.byteOffset);
232 assertSame(30*elementSize, aFromString.buffer.byteLength);
235 for (i = 0; i < 30; i++) {
236 jsArray.push(typicalElement);
238 var aFromArray = new constr(jsArray);
239 assertSame(elementSize, aFromArray.BYTES_PER_ELEMENT);
240 assertSame(30, aFromArray.length);
241 assertSame(30*elementSize, aFromArray.byteLength);
242 assertSame(0, aFromArray.byteOffset);
243 assertSame(30*elementSize, aFromArray.buffer.byteLength);
244 for (i = 0; i < 30; i++) {
245 assertSame(typicalElement, aFromArray[i]);
248 var abLen0 = new ArrayBuffer(0);
249 var aOverAbLen0 = new constr(abLen0);
250 assertSame(abLen0, aOverAbLen0.buffer);
251 assertSame(elementSize, aOverAbLen0.BYTES_PER_ELEMENT);
252 assertSame(0, aOverAbLen0.length);
253 assertSame(0, aOverAbLen0.byteLength);
254 assertSame(0, aOverAbLen0.byteOffset);
256 var aNoParam = new constr();
257 assertSame(elementSize, aNoParam.BYTES_PER_ELEMENT);
258 assertSame(0, aNoParam.length);
259 assertSame(0, aNoParam.byteLength);
260 assertSame(0, aNoParam.byteOffset);
263 TestTypedArray(Uint8Array, 1, 0xFF);
264 TestTypedArray(Int8Array, 1, -0x7F);
265 TestTypedArray(Uint16Array, 2, 0xFFFF);
266 TestTypedArray(Int16Array, 2, -0x7FFF);
267 TestTypedArray(Uint32Array, 4, 0xFFFFFFFF);
268 TestTypedArray(Int32Array, 4, -0x7FFFFFFF);
269 TestTypedArray(Float32Array, 4, 0.5);
270 TestTypedArray(Float64Array, 8, 0.5);
271 TestTypedArray(Uint8ClampedArray, 1, 0xFF);
273 function SubarrayTestCase(constructor, item, expectedResultLen, expectedStartIndex,
274 initialLen, start, end) {
275 var a = new constructor(initialLen);
276 var s = a.subarray(start, end);
277 assertSame(constructor, s.constructor);
278 assertSame(expectedResultLen, s.length);
281 assertSame(item, a[expectedStartIndex]);
285 function TestSubArray(constructor, item) {
286 SubarrayTestCase(constructor, item, 512, 512, 1024, 512, 1024);
287 SubarrayTestCase(constructor, item, 512, 512, 1024, 512);
289 SubarrayTestCase(constructor, item, 0, undefined, 0, 1, 20);
290 SubarrayTestCase(constructor, item, 100, 0, 100, 0, 100);
291 SubarrayTestCase(constructor, item, 100, 0, 100, 0, 1000);
292 SubarrayTestCase(constructor, item, 0, undefined, 100, 5, 1);
294 SubarrayTestCase(constructor, item, 1, 89, 100, -11, -10);
295 SubarrayTestCase(constructor, item, 9, 90, 100, -10, 99);
296 SubarrayTestCase(constructor, item, 0, undefined, 100, -10, 80);
297 SubarrayTestCase(constructor, item, 10,80, 100, 80, -10);
299 SubarrayTestCase(constructor, item, 10,90, 100, 90, "100");
300 SubarrayTestCase(constructor, item, 10,90, 100, "90", "100");
302 SubarrayTestCase(constructor, item, 0, undefined, 100, 90, "abc");
303 SubarrayTestCase(constructor, item, 10,0, 100, "abc", 10);
305 SubarrayTestCase(constructor, item, 10,0, 100, 0.96, 10.96);
306 SubarrayTestCase(constructor, item, 10,0, 100, 0.96, 10.01);
307 SubarrayTestCase(constructor, item, 10,0, 100, 0.01, 10.01);
308 SubarrayTestCase(constructor, item, 10,0, 100, 0.01, 10.96);
311 SubarrayTestCase(constructor, item, 10,90, 100, 90);
312 SubarrayTestCase(constructor, item, 10,90, 100, -10);
314 var method = constructor.prototype.subarray;
315 method.call(new constructor(100), 0, 100);
317 assertThrows(function() { method.call(o, 0, 100); }, TypeError);
320 TestSubArray(Uint8Array, 0xFF);
321 TestSubArray(Int8Array, -0x7F);
322 TestSubArray(Uint16Array, 0xFFFF);
323 TestSubArray(Int16Array, -0x7FFF);
324 TestSubArray(Uint32Array, 0xFFFFFFFF);
325 TestSubArray(Int32Array, -0x7FFFFFFF);
326 TestSubArray(Float32Array, 0.5);
327 TestSubArray(Float64Array, 0.5);
328 TestSubArray(Uint8ClampedArray, 0xFF);
330 function TestTypedArrayOutOfRange(constructor, value, result) {
331 var a = new constructor(1);
333 assertSame(result, a[0]);
336 TestTypedArrayOutOfRange(Uint8Array, 0x1FA, 0xFA);
337 TestTypedArrayOutOfRange(Uint8Array, -1, 0xFF);
339 TestTypedArrayOutOfRange(Int8Array, 0x1FA, 0x7A - 0x80);
341 TestTypedArrayOutOfRange(Uint16Array, 0x1FFFA, 0xFFFA);
342 TestTypedArrayOutOfRange(Uint16Array, -1, 0xFFFF);
343 TestTypedArrayOutOfRange(Int16Array, 0x1FFFA, 0x7FFA - 0x8000);
345 TestTypedArrayOutOfRange(Uint32Array, 0x1FFFFFFFA, 0xFFFFFFFA);
346 TestTypedArrayOutOfRange(Uint32Array, -1, 0xFFFFFFFF);
347 TestTypedArrayOutOfRange(Int32Array, 0x1FFFFFFFA, 0x7FFFFFFA - 0x80000000);
349 TestTypedArrayOutOfRange(Uint8ClampedArray, 0x1FA, 0xFF);
350 TestTypedArrayOutOfRange(Uint8ClampedArray, -1, 0);
352 var typedArrayConstructors = [
363 function TestPropertyTypeChecks(constructor) {
364 var a = new constructor();
365 function CheckProperty(name) {
366 var d = Object.getOwnPropertyDescriptor(constructor.prototype, name);
368 assertThrows(function() {d.get.call(o);}, TypeError);
369 d.get.call(a); // shouldn't throw
370 for (var i = 0 ; i < typedArrayConstructors.length; i++) {
371 d.get.call(new typedArrayConstructors[i](10));
375 CheckProperty("buffer");
376 CheckProperty("byteOffset");
377 CheckProperty("byteLength");
378 CheckProperty("length");
381 for(i = 0; i < typedArrayConstructors.lenght; i++) {
382 TestPropertyTypeChecks(typedArrayConstructors[i]);
386 function TestTypedArraySet() {
387 // Test array.set in different combinations.
389 function assertArrayPrefix(expected, array) {
390 for (var i = 0; i < expected.length; ++i) {
391 assertEquals(expected[i], array[i]);
395 var a11 = new Int16Array([1, 2, 3, 4, 0, -1])
396 var a12 = new Uint16Array(15)
398 assertArrayPrefix([0, 0, 0, 1, 2, 3, 4, 0, 0xffff, 0, 0], a12)
399 assertThrows(function(){ a11.set(a12) })
401 var a21 = [1, undefined, 10, NaN, 0, -1, {valueOf: function() {return 3}}]
402 var a22 = new Int32Array(12)
404 assertArrayPrefix([0, 0, 1, 0, 10, 0, 0, -1, 3, 0], a22)
406 var a31 = new Float32Array([2, 4, 6, 8, 11, NaN, 1/0, -3])
407 var a32 = a31.subarray(2, 6)
409 assertArrayPrefix([2, 4, 6, 8, 6, 8, 11, NaN], a31)
410 assertArrayPrefix([6, 8, 6, 8], a32)
412 var a4 = new Uint8ClampedArray([3,2,5,6])
414 assertArrayPrefix([3, 2, 5, 6], a4)
416 // Cases with overlapping backing store but different element sizes.
417 var b = new ArrayBuffer(4)
418 var a5 = new Int16Array(b)
419 var a50 = new Int8Array(b)
420 var a51 = new Int8Array(b, 0, 2)
421 var a52 = new Int8Array(b, 1, 2)
422 var a53 = new Int8Array(b, 2, 2)
424 a5.set([0x5050, 0x0a0a])
425 assertArrayPrefix([0x50, 0x50, 0x0a, 0x0a], a50)
426 assertArrayPrefix([0x50, 0x50], a51)
427 assertArrayPrefix([0x50, 0x0a], a52)
428 assertArrayPrefix([0x0a, 0x0a], a53)
430 a50.set([0x50, 0x50, 0x0a, 0x0a])
432 assertArrayPrefix([0x50, 0x0a, 0x0a, 0x0a], a50)
434 a50.set([0x50, 0x50, 0x0a, 0x0a])
436 assertArrayPrefix([0x50, 0x50, 0x0a, 0x0a], a50)
438 a50.set([0x50, 0x50, 0x0a, 0x0a])
440 assertArrayPrefix([0x50, 0x50, 0x50, 0x0a], a50)
442 a50.set([0x50, 0x51, 0x0a, 0x0b])
444 assertArrayPrefix([0x0050, 0x0051], a5)
446 a50.set([0x50, 0x51, 0x0a, 0x0b])
448 assertArrayPrefix([0x0051, 0x000a], a5)
450 a50.set([0x50, 0x51, 0x0a, 0x0b])
452 assertArrayPrefix([0x000a, 0x000b], a5)
454 // Mixed types of same size.
455 var a61 = new Float32Array([1.2, 12.3])
456 var a62 = new Int32Array(2)
458 assertArrayPrefix([1, 12], a62)
460 assertArrayPrefix([1, 12], a61)
463 var a = new Uint16Array(50);
465 for (i = 0; i < 50; i++) {
470 assertArrayPrefix(expected, a);
471 assertThrows(function() { a.set.call({}) }, TypeError);
472 assertThrows(function() { a.set.call([]) }, TypeError);
474 assertThrows(function() { a.set(0); }, TypeError);
475 assertThrows(function() { a.set(0, 1); }, TypeError);
481 function TestDataViewConstructor() {
482 var ab = new ArrayBuffer(256);
484 var d1 = new DataView(ab, 1, 255);
485 assertTrue(ArrayBuffer.isView(d1));
486 assertSame(ab, d1.buffer);
487 assertSame(1, d1.byteOffset);
488 assertSame(255, d1.byteLength);
490 var d2 = new DataView(ab, 2);
491 assertSame(ab, d2.buffer);
492 assertSame(2, d2.byteOffset);
493 assertSame(254, d2.byteLength);
495 var d3 = new DataView(ab);
496 assertSame(ab, d3.buffer);
497 assertSame(0, d3.byteOffset);
498 assertSame(256, d3.byteLength);
500 var d3a = new DataView(ab, 1, 0);
501 assertSame(ab, d3a.buffer);
502 assertSame(1, d3a.byteOffset);
503 assertSame(0, d3a.byteLength);
505 var d3b = new DataView(ab, 256, 0);
506 assertSame(ab, d3b.buffer);
507 assertSame(256, d3b.byteOffset);
508 assertSame(0, d3b.byteLength);
510 var d3c = new DataView(ab, 256);
511 assertSame(ab, d3c.buffer);
512 assertSame(256, d3c.byteOffset);
513 assertSame(0, d3c.byteLength);
515 var d4 = new DataView(ab, 1, 3.1415926);
516 assertSame(ab, d4.buffer);
517 assertSame(1, d4.byteOffset);
518 assertSame(3, d4.byteLength);
522 assertThrows(function() { new DataView(ab, -1); }, RangeError);
523 assertThrows(function() { new DataView(ab, 1, -1); }, RangeError);
524 assertThrows(function() { new DataView(); }, TypeError);
525 assertThrows(function() { new DataView([]); }, TypeError);
526 assertThrows(function() { new DataView(ab, 257); }, RangeError);
527 assertThrows(function() { new DataView(ab, 1, 1024); }, RangeError);
530 TestDataViewConstructor();
532 function TestDataViewPropertyTypeChecks() {
533 var a = new DataView(new ArrayBuffer(10));
534 function CheckProperty(name) {
535 var d = Object.getOwnPropertyDescriptor(DataView.prototype, name);
537 assertThrows(function() {d.get.call(o);}, TypeError);
538 d.get.call(a); // shouldn't throw
541 CheckProperty("buffer");
542 CheckProperty("byteOffset");
543 CheckProperty("byteLength");
547 TestDataViewPropertyTypeChecks();
549 // General tests for properties
551 // Test property attribute [[Enumerable]]
552 function TestEnumerable(func, obj) {
555 for (var p in x) array.push(p);
558 assertArrayEquals([], props(func));
559 assertArrayEquals([], props(func.prototype));
561 assertArrayEquals([], props(obj));
563 TestEnumerable(ArrayBuffer, new ArrayBuffer());
564 for(i = 0; i < typedArrayConstructors.lenght; i++) {
565 TestEnumerable(typedArrayConstructors[i]);
567 TestEnumerable(DataView, new DataView(new ArrayBuffer()));
569 // Test arbitrary properties on ArrayBuffer
570 function TestArbitrary(m) {
571 function TestProperty(map, property, value) {
572 map[property] = value;
573 assertEquals(value, map[property]);
575 for (var i = 0; i < 20; i++) {
576 TestProperty(m, i, 'val' + i);
577 TestProperty(m, 'foo' + i, 'bar' + i);
580 TestArbitrary(new ArrayBuffer(256));
581 for(i = 0; i < typedArrayConstructors.lenght; i++) {
582 TestArbitary(new typedArrayConstructors[i](10));
584 TestArbitrary(new DataView(new ArrayBuffer(256)));
587 // Test direct constructor call
588 assertThrows(function() { ArrayBuffer(); }, TypeError);
589 assertThrows(function() { DataView(new ArrayBuffer()); }, TypeError);