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781 lines
22 KiB
781 lines
22 KiB
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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// Disable the neutering protector.
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%ArrayBufferNeuter(new ArrayBuffer(1024));
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// ArrayBuffer
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function TestByteLength(param, expectedByteLength) {
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var ab = new ArrayBuffer(param);
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assertSame(expectedByteLength, ab.byteLength);
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}
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function TestArrayBufferCreation() {
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TestByteLength(1, 1);
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TestByteLength(256, 256);
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TestByteLength(2.567, 2);
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TestByteLength("abc", 0);
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TestByteLength(0, 0);
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assertThrows(function() { new ArrayBuffer(-10); }, RangeError);
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assertThrows(function() { new ArrayBuffer(-2.567); }, RangeError);
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/* TODO[dslomov]: Reenable the test
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assertThrows(function() {
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var ab1 = new ArrayBuffer(0xFFFFFFFFFFFF)
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}, RangeError);
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*/
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var ab = new ArrayBuffer();
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assertSame(0, ab.byteLength);
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assertEquals("[object ArrayBuffer]",
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Object.prototype.toString.call(ab));
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}
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TestArrayBufferCreation();
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function TestByteLengthNotWritable() {
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var ab = new ArrayBuffer(1024);
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assertSame(1024, ab.byteLength);
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assertThrows(function() { "use strict"; ab.byteLength = 42; }, TypeError);
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}
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TestByteLengthNotWritable();
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function TestSlice(expectedResultLen, initialLen, start, end) {
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var ab = new ArrayBuffer(initialLen);
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var a1 = new Uint8Array(ab);
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for (var i = 0; i < a1.length; i++) {
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a1[i] = 0xCA;
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}
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var slice = ab.slice(start, end);
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assertSame(expectedResultLen, slice.byteLength);
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var a2 = new Uint8Array(slice);
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for (var i = 0; i < a2.length; i++) {
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assertSame(0xCA, a2[i]);
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}
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}
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function TestArrayBufferSlice() {
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var ab = new ArrayBuffer(1024);
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var ab1 = ab.slice(512, 1024);
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assertSame(512, ab1.byteLength);
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TestSlice(512, 1024, 512, 1024);
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TestSlice(512, 1024, 512);
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TestSlice(0, 0, 1, 20);
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TestSlice(100, 100, 0, 100);
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TestSlice(100, 100, 0, 1000);
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TestSlice(0, 100, 5, 1);
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TestSlice(1, 100, -11, -10);
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TestSlice(9, 100, -10, 99);
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TestSlice(0, 100, -10, 80);
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TestSlice(10, 100, 80, -10);
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TestSlice(10, 100, 90, "100");
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TestSlice(10, 100, "90", "100");
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TestSlice(0, 100, 90, "abc");
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TestSlice(10, 100, "abc", 10);
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TestSlice(10, 100, 0.96, 10.96);
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TestSlice(10, 100, 0.96, 10.01);
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TestSlice(10, 100, 0.01, 10.01);
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TestSlice(10, 100, 0.01, 10.96);
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TestSlice(10, 100, 90);
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TestSlice(10, 100, -10);
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}
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TestArrayBufferSlice();
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// Typed arrays
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function TestTypedArray(constr, elementSize, typicalElement) {
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assertSame(elementSize, constr.BYTES_PER_ELEMENT);
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var ab = new ArrayBuffer(256*elementSize);
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var a0 = new constr(30);
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assertEquals("[object " + constr.name + "]",
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Object.prototype.toString.call(a0));
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assertTrue(ArrayBuffer.isView(a0));
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assertSame(elementSize, a0.BYTES_PER_ELEMENT);
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assertSame(30, a0.length);
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assertSame(30*elementSize, a0.byteLength);
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assertSame(0, a0.byteOffset);
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assertSame(30*elementSize, a0.buffer.byteLength);
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var aLen0 = new constr(0);
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assertSame(elementSize, aLen0.BYTES_PER_ELEMENT);
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assertSame(0, aLen0.length);
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assertSame(0, aLen0.byteLength);
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assertSame(0, aLen0.byteOffset);
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assertSame(0, aLen0.buffer.byteLength);
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var aOverBufferLen0 = new constr(ab, 128*elementSize, 0);
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assertSame(ab, aOverBufferLen0.buffer);
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assertSame(elementSize, aOverBufferLen0.BYTES_PER_ELEMENT);
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assertSame(0, aOverBufferLen0.length);
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assertSame(0, aOverBufferLen0.byteLength);
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assertSame(128*elementSize, aOverBufferLen0.byteOffset);
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var a1 = new constr(ab, 128*elementSize, 128);
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assertSame(ab, a1.buffer);
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assertSame(elementSize, a1.BYTES_PER_ELEMENT);
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assertSame(128, a1.length);
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assertSame(128*elementSize, a1.byteLength);
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assertSame(128*elementSize, a1.byteOffset);
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var a2 = new constr(ab, 64*elementSize, 128);
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assertSame(ab, a2.buffer);
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assertSame(elementSize, a2.BYTES_PER_ELEMENT);
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assertSame(128, a2.length);
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assertSame(128*elementSize, a2.byteLength);
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assertSame(64*elementSize, a2.byteOffset);
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var a3 = new constr(ab, 192*elementSize);
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assertSame(ab, a3.buffer);
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assertSame(64, a3.length);
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assertSame(64*elementSize, a3.byteLength);
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assertSame(192*elementSize, a3.byteOffset);
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var a4 = new constr(ab);
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assertSame(ab, a4.buffer);
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assertSame(256, a4.length);
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assertSame(256*elementSize, a4.byteLength);
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assertSame(0, a4.byteOffset);
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var i;
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for (i = 0; i < 128; i++) {
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a1[i] = typicalElement;
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}
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for (i = 0; i < 128; i++) {
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assertSame(typicalElement, a1[i]);
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}
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for (i = 0; i < 64; i++) {
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assertSame(0, a2[i]);
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}
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for (i = 64; i < 128; i++) {
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assertSame(typicalElement, a2[i]);
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}
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for (i = 0; i < 64; i++) {
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assertSame(typicalElement, a3[i]);
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}
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for (i = 0; i < 128; i++) {
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assertSame(0, a4[i]);
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}
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for (i = 128; i < 256; i++) {
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assertSame(typicalElement, a4[i]);
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}
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var aAtTheEnd = new constr(ab, 256*elementSize);
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assertSame(elementSize, aAtTheEnd.BYTES_PER_ELEMENT);
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assertSame(0, aAtTheEnd.length);
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assertSame(0, aAtTheEnd.byteLength);
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assertSame(256*elementSize, aAtTheEnd.byteOffset);
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assertThrows(function () { new constr(ab, 257*elementSize); }, RangeError);
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assertThrows(
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function () { new constr(ab, 128*elementSize, 192); },
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RangeError);
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if (elementSize !== 1) {
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assertThrows(function() { new constr(ab, 128*elementSize - 1, 10); },
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RangeError);
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var unalignedArrayBuffer = new ArrayBuffer(10*elementSize + 1);
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var goodArray = new constr(unalignedArrayBuffer, 0, 10);
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assertSame(10, goodArray.length);
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assertSame(10*elementSize, goodArray.byteLength);
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assertThrows(function() { new constr(unalignedArrayBuffer)}, RangeError);
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assertThrows(function() { new constr(unalignedArrayBuffer, 5*elementSize)},
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RangeError);
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}
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var aFromUndef = new constr();
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assertSame(elementSize, aFromUndef.BYTES_PER_ELEMENT);
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assertSame(0, aFromUndef.length);
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assertSame(0*elementSize, aFromUndef.byteLength);
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assertSame(0, aFromUndef.byteOffset);
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assertSame(0*elementSize, aFromUndef.buffer.byteLength);
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var aFromNull = new constr(null);
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assertSame(elementSize, aFromNull.BYTES_PER_ELEMENT);
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assertSame(0, aFromNull.length);
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assertSame(0*elementSize, aFromNull.byteLength);
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assertSame(0, aFromNull.byteOffset);
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assertSame(0*elementSize, aFromNull.buffer.byteLength);
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var aFromBool = new constr(true);
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assertSame(elementSize, aFromBool.BYTES_PER_ELEMENT);
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assertSame(1, aFromBool.length);
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assertSame(1*elementSize, aFromBool.byteLength);
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assertSame(0, aFromBool.byteOffset);
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assertSame(1*elementSize, aFromBool.buffer.byteLength);
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var aFromString = new constr("30");
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assertSame(elementSize, aFromString.BYTES_PER_ELEMENT);
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assertSame(30, aFromString.length);
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assertSame(30*elementSize, aFromString.byteLength);
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assertSame(0, aFromString.byteOffset);
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assertSame(30*elementSize, aFromString.buffer.byteLength);
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assertThrows(function() { new constr(Symbol()); }, TypeError);
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var jsArray = [];
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for (i = 0; i < 30; i++) {
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jsArray.push(typicalElement);
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}
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var aFromArray = new constr(jsArray);
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assertSame(elementSize, aFromArray.BYTES_PER_ELEMENT);
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assertSame(30, aFromArray.length);
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assertSame(30*elementSize, aFromArray.byteLength);
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assertSame(0, aFromArray.byteOffset);
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assertSame(30*elementSize, aFromArray.buffer.byteLength);
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for (i = 0; i < 30; i++) {
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assertSame(typicalElement, aFromArray[i]);
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}
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var abLen0 = new ArrayBuffer(0);
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var aOverAbLen0 = new constr(abLen0);
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assertSame(abLen0, aOverAbLen0.buffer);
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assertSame(elementSize, aOverAbLen0.BYTES_PER_ELEMENT);
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assertSame(0, aOverAbLen0.length);
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assertSame(0, aOverAbLen0.byteLength);
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assertSame(0, aOverAbLen0.byteOffset);
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var aNoParam = new constr();
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assertSame(elementSize, aNoParam.BYTES_PER_ELEMENT);
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assertSame(0, aNoParam.length);
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assertSame(0, aNoParam.byteLength);
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assertSame(0, aNoParam.byteOffset);
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var a = new constr(ab, 64*elementSize, 128);
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assertEquals("[object " + constr.name + "]",
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Object.prototype.toString.call(a));
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var desc = Object.getOwnPropertyDescriptor(
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constr.prototype.__proto__, Symbol.toStringTag);
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assertTrue(desc.configurable);
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assertFalse(desc.enumerable);
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assertFalse(!!desc.writable);
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assertFalse(!!desc.set);
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assertEquals("function", typeof desc.get);
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// Test that the constructor can be called with an iterable
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function* gen() { for (var i = 0; i < 10; i++) yield i; }
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var genArr = new constr(gen());
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assertEquals(10, genArr.length);
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assertEquals(0, genArr[0]);
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assertEquals(9, genArr[9]);
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// Arrays can be converted to TypedArrays
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genArr = new constr([1, 2, 3]);
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assertEquals(3, genArr.length);
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assertEquals(1, genArr[0]);
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assertEquals(3, genArr[2]);
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// Redefining Array.prototype[Symbol.iterator] still works
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var arrayIterator = Array.prototype[Symbol.iterator];
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Array.prototype[Symbol.iterator] = gen;
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genArr = new constr([1, 2, 3]);
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assertEquals(10, genArr.length);
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assertEquals(0, genArr[0]);
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assertEquals(9, genArr[9]);
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Array.prototype[Symbol.iterator] = arrayIterator;
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// Other array-like things can be made into a TypedArray
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var myObject = { 0: 5, 1: 6, length: 2 };
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genArr = new constr(myObject);
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assertEquals(2, genArr.length);
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assertEquals(5, genArr[0]);
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assertEquals(6, genArr[1]);
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// Iterator takes precedence over array-like, and the property
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// is read only once.
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var iteratorReadCount = 0;
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Object.defineProperty(myObject, Symbol.iterator, {
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get: function() { iteratorReadCount++; return gen; }
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});
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genArr = new constr(myObject);
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assertEquals(10, genArr.length);
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assertEquals(0, genArr[0]);
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assertEquals(9, genArr[9]);
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assertEquals(1, iteratorReadCount);
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}
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TestTypedArray(Uint8Array, 1, 0xFF);
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TestTypedArray(Int8Array, 1, -0x7F);
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TestTypedArray(Uint16Array, 2, 0xFFFF);
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TestTypedArray(Int16Array, 2, -0x7FFF);
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TestTypedArray(Uint32Array, 4, 0xFFFFFFFF);
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TestTypedArray(Int32Array, 4, -0x7FFFFFFF);
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TestTypedArray(Float32Array, 4, 0.5);
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TestTypedArray(Float64Array, 8, 0.5);
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TestTypedArray(Uint8ClampedArray, 1, 0xFF);
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function SubarrayTestCase(constructor, item, expectedResultLen, expectedStartIndex,
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initialLen, start, end) {
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var a = new constructor(initialLen);
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var s = a.subarray(start, end);
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assertSame(constructor, s.constructor);
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assertSame(expectedResultLen, s.length);
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if (s.length > 0) {
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s[0] = item;
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assertSame(item, a[expectedStartIndex]);
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}
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}
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function TestSubArray(constructor, item) {
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SubarrayTestCase(constructor, item, 512, 512, 1024, 512, 1024);
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SubarrayTestCase(constructor, item, 512, 512, 1024, 512);
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SubarrayTestCase(constructor, item, 0, undefined, 0, 1, 20);
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SubarrayTestCase(constructor, item, 100, 0, 100, 0, 100);
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SubarrayTestCase(constructor, item, 100, 0, 100, 0, 1000);
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SubarrayTestCase(constructor, item, 0, undefined, 100, 5, 1);
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SubarrayTestCase(constructor, item, 1, 89, 100, -11, -10);
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SubarrayTestCase(constructor, item, 9, 90, 100, -10, 99);
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SubarrayTestCase(constructor, item, 0, undefined, 100, -10, 80);
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SubarrayTestCase(constructor, item, 10,80, 100, 80, -10);
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SubarrayTestCase(constructor, item, 10,90, 100, 90, "100");
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SubarrayTestCase(constructor, item, 10,90, 100, "90", "100");
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SubarrayTestCase(constructor, item, 0, undefined, 100, 90, "abc");
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SubarrayTestCase(constructor, item, 10,0, 100, "abc", 10);
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SubarrayTestCase(constructor, item, 10,0, 100, 0.96, 10.96);
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SubarrayTestCase(constructor, item, 10,0, 100, 0.96, 10.01);
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SubarrayTestCase(constructor, item, 10,0, 100, 0.01, 10.01);
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SubarrayTestCase(constructor, item, 10,0, 100, 0.01, 10.96);
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SubarrayTestCase(constructor, item, 10,90, 100, 90);
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SubarrayTestCase(constructor, item, 10,90, 100, -10);
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var method = constructor.prototype.subarray;
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method.call(new constructor(100), 0, 100);
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var o = {};
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assertThrows(function() { method.call(o, 0, 100); }, TypeError);
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}
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TestSubArray(Uint8Array, 0xFF);
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TestSubArray(Int8Array, -0x7F);
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TestSubArray(Uint16Array, 0xFFFF);
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TestSubArray(Int16Array, -0x7FFF);
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TestSubArray(Uint32Array, 0xFFFFFFFF);
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TestSubArray(Int32Array, -0x7FFFFFFF);
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TestSubArray(Float32Array, 0.5);
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TestSubArray(Float64Array, 0.5);
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TestSubArray(Uint8ClampedArray, 0xFF);
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function TestTypedArrayOutOfRange(constructor, value, result) {
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var a = new constructor(1);
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a[0] = value;
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assertSame(result, a[0]);
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}
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TestTypedArrayOutOfRange(Uint8Array, 0x1FA, 0xFA);
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TestTypedArrayOutOfRange(Uint8Array, -1, 0xFF);
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TestTypedArrayOutOfRange(Int8Array, 0x1FA, 0x7A - 0x80);
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TestTypedArrayOutOfRange(Uint16Array, 0x1FFFA, 0xFFFA);
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TestTypedArrayOutOfRange(Uint16Array, -1, 0xFFFF);
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TestTypedArrayOutOfRange(Int16Array, 0x1FFFA, 0x7FFA - 0x8000);
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TestTypedArrayOutOfRange(Uint32Array, 0x1FFFFFFFA, 0xFFFFFFFA);
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TestTypedArrayOutOfRange(Uint32Array, -1, 0xFFFFFFFF);
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TestTypedArrayOutOfRange(Int32Array, 0x1FFFFFFFA, 0x7FFFFFFA - 0x80000000);
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TestTypedArrayOutOfRange(Uint8ClampedArray, 0x1FA, 0xFF);
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TestTypedArrayOutOfRange(Uint8ClampedArray, -1, 0);
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var typedArrayConstructors = [
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Uint8Array,
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Int8Array,
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Uint16Array,
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Int16Array,
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Uint32Array,
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Int32Array,
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Uint8ClampedArray,
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Float32Array,
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Float64Array];
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function TestPropertyTypeChecks(constructor) {
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function CheckProperty(name) {
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assertThrows(function() { 'use strict'; new constructor(10)[name] = 0; })
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var d = Object.getOwnPropertyDescriptor(constructor.prototype.__proto__, name);
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var o = {};
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assertThrows(function() {d.get.call(o);}, TypeError);
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for (var i = 0; i < typedArrayConstructors.length; i++) {
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var ctor = typedArrayConstructors[i];
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var a = new ctor(10);
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d.get.call(a); // shouldn't throw
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}
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}
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CheckProperty("buffer");
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CheckProperty("byteOffset");
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CheckProperty("byteLength");
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CheckProperty("length");
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}
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for(i = 0; i < typedArrayConstructors.length; i++) {
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TestPropertyTypeChecks(typedArrayConstructors[i]);
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}
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function TestTypedArraySet() {
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// Test array.set in different combinations.
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function assertArrayPrefix(expected, array) {
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for (var i = 0; i < expected.length; ++i) {
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assertEquals(expected[i], array[i]);
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}
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}
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var a11 = new Int16Array([1, 2, 3, 4, 0, -1])
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var a12 = new Uint16Array(15)
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a12.set(a11, 3)
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assertArrayPrefix([0, 0, 0, 1, 2, 3, 4, 0, 0xffff, 0, 0], a12)
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assertThrows(function(){ a11.set(a12) })
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var a21 = [1, undefined, 10, NaN, 0, -1, {valueOf: function() {return 3}}]
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var a22 = new Int32Array(12)
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a22.set(a21, 2)
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assertArrayPrefix([0, 0, 1, 0, 10, 0, 0, -1, 3, 0], a22)
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var a31 = new Float32Array([2, 4, 6, 8, 11, NaN, 1/0, -3])
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var a32 = a31.subarray(2, 6)
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a31.set(a32, 4)
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|
assertArrayPrefix([2, 4, 6, 8, 6, 8, 11, NaN], a31)
|
|
assertArrayPrefix([6, 8, 6, 8], a32)
|
|
|
|
var a4 = new Uint8ClampedArray([3,2,5,6])
|
|
a4.set(a4)
|
|
assertArrayPrefix([3, 2, 5, 6], a4)
|
|
|
|
// Cases with overlapping backing store but different element sizes.
|
|
var b = new ArrayBuffer(4)
|
|
var a5 = new Int16Array(b)
|
|
var a50 = new Int8Array(b)
|
|
var a51 = new Int8Array(b, 0, 2)
|
|
var a52 = new Int8Array(b, 1, 2)
|
|
var a53 = new Int8Array(b, 2, 2)
|
|
|
|
a5.set([0x5050, 0x0a0a])
|
|
assertArrayPrefix([0x50, 0x50, 0x0a, 0x0a], a50)
|
|
assertArrayPrefix([0x50, 0x50], a51)
|
|
assertArrayPrefix([0x50, 0x0a], a52)
|
|
assertArrayPrefix([0x0a, 0x0a], a53)
|
|
|
|
a50.set([0x50, 0x50, 0x0a, 0x0a])
|
|
a51.set(a5)
|
|
assertArrayPrefix([0x50, 0x0a, 0x0a, 0x0a], a50)
|
|
|
|
a50.set([0x50, 0x50, 0x0a, 0x0a])
|
|
a52.set(a5)
|
|
assertArrayPrefix([0x50, 0x50, 0x0a, 0x0a], a50)
|
|
|
|
a50.set([0x50, 0x50, 0x0a, 0x0a])
|
|
a53.set(a5)
|
|
assertArrayPrefix([0x50, 0x50, 0x50, 0x0a], a50)
|
|
|
|
a50.set([0x50, 0x51, 0x0a, 0x0b])
|
|
a5.set(a51)
|
|
assertArrayPrefix([0x0050, 0x0051], a5)
|
|
|
|
a50.set([0x50, 0x51, 0x0a, 0x0b])
|
|
a5.set(a52)
|
|
assertArrayPrefix([0x0051, 0x000a], a5)
|
|
|
|
a50.set([0x50, 0x51, 0x0a, 0x0b])
|
|
a5.set(a53)
|
|
assertArrayPrefix([0x000a, 0x000b], a5)
|
|
|
|
// Mixed types of same size.
|
|
var a61 = new Float32Array([1.2, 12.3])
|
|
var a62 = new Int32Array(2)
|
|
a62.set(a61)
|
|
assertArrayPrefix([1, 12], a62)
|
|
a61.set(a62)
|
|
assertArrayPrefix([1, 12], a61)
|
|
|
|
// Invalid source
|
|
var a = new Uint16Array(50);
|
|
var expected = [];
|
|
for (i = 0; i < 50; i++) {
|
|
a[i] = i;
|
|
expected.push(i);
|
|
}
|
|
a.set({});
|
|
assertArrayPrefix(expected, a);
|
|
assertThrows(function() { a.set.call({}) }, TypeError);
|
|
assertThrows(function() { a.set.call([]) }, TypeError);
|
|
|
|
assertThrows(function() { a.set(0); }, TypeError);
|
|
assertThrows(function() { a.set(0, 1); }, TypeError);
|
|
|
|
assertEquals(1, a.set.length);
|
|
}
|
|
|
|
TestTypedArraySet();
|
|
|
|
function TestTypedArraysWithIllegalIndices() {
|
|
var a = new Int32Array(100);
|
|
|
|
a[-10] = 10;
|
|
assertEquals(undefined, a[-10]);
|
|
a["-10"] = 10;
|
|
assertEquals(undefined, a["-10"]);
|
|
|
|
var s = " -10";
|
|
a[s] = 10;
|
|
assertEquals(10, a[s]);
|
|
var s1 = " -10 ";
|
|
a[s] = 10;
|
|
assertEquals(10, a[s]);
|
|
|
|
a["-1e2"] = 10;
|
|
assertEquals(10, a["-1e2"]);
|
|
assertEquals(undefined, a[-1e2]);
|
|
|
|
a["-0"] = 256;
|
|
var s2 = " -0";
|
|
a[s2] = 255;
|
|
assertEquals(undefined, a["-0"]);
|
|
assertEquals(255, a[s2]);
|
|
assertEquals(0, a[-0]);
|
|
|
|
a[-Infinity] = 50;
|
|
assertEquals(undefined, a[-Infinity]);
|
|
|
|
a[1.5] = 10;
|
|
assertEquals(undefined, a[1.5]);
|
|
var nan = Math.sqrt(-1);
|
|
a[nan] = 5;
|
|
assertEquals(undefined, a[nan]);
|
|
|
|
var x = 0;
|
|
var y = -0;
|
|
assertEquals(Infinity, 1/x);
|
|
assertEquals(-Infinity, 1/y);
|
|
a[x] = 5;
|
|
a[y] = 27;
|
|
assertEquals(27, a[x]);
|
|
assertEquals(27, a[y]);
|
|
}
|
|
|
|
TestTypedArraysWithIllegalIndices();
|
|
|
|
function TestTypedArraysWithIllegalIndicesStrict() {
|
|
'use strict';
|
|
var a = new Int32Array(100);
|
|
|
|
a[-10] = 10;
|
|
assertEquals(undefined, a[-10]);
|
|
a["-10"] = 10;
|
|
assertEquals(undefined, a["-10"]);
|
|
|
|
var s = " -10";
|
|
a[s] = 10;
|
|
assertEquals(10, a[s]);
|
|
var s1 = " -10 ";
|
|
a[s] = 10;
|
|
assertEquals(10, a[s]);
|
|
|
|
a["-1e2"] = 10;
|
|
assertEquals(10, a["-1e2"]);
|
|
assertEquals(undefined, a[-1e2]);
|
|
|
|
a["-0"] = 256;
|
|
var s2 = " -0";
|
|
a[s2] = 255;
|
|
assertEquals(undefined, a["-0"]);
|
|
assertEquals(255, a[s2]);
|
|
assertEquals(0, a[-0]);
|
|
|
|
/* Chromium bug: 424619
|
|
* a[-Infinity] = 50;
|
|
* assertEquals(undefined, a[-Infinity]);
|
|
*/
|
|
a[1.5] = 10;
|
|
assertEquals(undefined, a[1.5]);
|
|
var nan = Math.sqrt(-1);
|
|
a[nan] = 5;
|
|
assertEquals(undefined, a[nan]);
|
|
|
|
var x = 0;
|
|
var y = -0;
|
|
assertEquals(Infinity, 1/x);
|
|
assertEquals(-Infinity, 1/y);
|
|
a[x] = 5;
|
|
a[y] = 27;
|
|
assertEquals(27, a[x]);
|
|
assertEquals(27, a[y]);
|
|
}
|
|
|
|
TestTypedArraysWithIllegalIndicesStrict();
|
|
|
|
// DataView
|
|
function TestDataViewConstructor() {
|
|
var ab = new ArrayBuffer(256);
|
|
|
|
var d1 = new DataView(ab, 1, 255);
|
|
assertTrue(ArrayBuffer.isView(d1));
|
|
assertSame(ab, d1.buffer);
|
|
assertSame(1, d1.byteOffset);
|
|
assertSame(255, d1.byteLength);
|
|
|
|
var d2 = new DataView(ab, 2);
|
|
assertSame(ab, d2.buffer);
|
|
assertSame(2, d2.byteOffset);
|
|
assertSame(254, d2.byteLength);
|
|
|
|
var d3 = new DataView(ab);
|
|
assertSame(ab, d3.buffer);
|
|
assertSame(0, d3.byteOffset);
|
|
assertSame(256, d3.byteLength);
|
|
|
|
var d3a = new DataView(ab, 1, 0);
|
|
assertSame(ab, d3a.buffer);
|
|
assertSame(1, d3a.byteOffset);
|
|
assertSame(0, d3a.byteLength);
|
|
|
|
var d3b = new DataView(ab, 256, 0);
|
|
assertSame(ab, d3b.buffer);
|
|
assertSame(256, d3b.byteOffset);
|
|
assertSame(0, d3b.byteLength);
|
|
|
|
var d3c = new DataView(ab, 256);
|
|
assertSame(ab, d3c.buffer);
|
|
assertSame(256, d3c.byteOffset);
|
|
assertSame(0, d3c.byteLength);
|
|
|
|
var d4 = new DataView(ab, 1, 3.1415926);
|
|
assertSame(ab, d4.buffer);
|
|
assertSame(1, d4.byteOffset);
|
|
assertSame(3, d4.byteLength);
|
|
|
|
|
|
// error cases
|
|
assertThrows(function() { new DataView(ab, -1); }, RangeError);
|
|
assertThrows(function() { new DataView(); }, TypeError);
|
|
assertThrows(function() { new DataView([]); }, TypeError);
|
|
assertThrows(function() { new DataView(ab, 257); }, RangeError);
|
|
assertThrows(function() { new DataView(ab, 1, 1024); }, RangeError);
|
|
}
|
|
|
|
TestDataViewConstructor();
|
|
|
|
function TestDataViewPropertyTypeChecks() {
|
|
var a = new DataView(new ArrayBuffer(10));
|
|
function CheckProperty(name) {
|
|
var d = Object.getOwnPropertyDescriptor(DataView.prototype, name);
|
|
var o = {}
|
|
assertThrows(function() {d.get.call(o);}, TypeError);
|
|
d.get.call(a); // shouldn't throw
|
|
}
|
|
|
|
CheckProperty("buffer");
|
|
CheckProperty("byteOffset");
|
|
CheckProperty("byteLength");
|
|
|
|
function CheckGetSetLength(name) {
|
|
assertEquals(1, DataView.prototype["get" + name].length);
|
|
assertEquals(2, DataView.prototype["set" + name].length);
|
|
}
|
|
CheckGetSetLength("Int8");
|
|
CheckGetSetLength("Uint8");
|
|
CheckGetSetLength("Int16");
|
|
CheckGetSetLength("Uint16");
|
|
CheckGetSetLength("Int32");
|
|
CheckGetSetLength("Uint32");
|
|
CheckGetSetLength("Float32");
|
|
CheckGetSetLength("Float64");
|
|
}
|
|
|
|
|
|
TestDataViewPropertyTypeChecks();
|
|
|
|
|
|
function TestDataViewToStringTag() {
|
|
var a = new DataView(new ArrayBuffer(10));
|
|
assertEquals("[object DataView]", Object.prototype.toString.call(a));
|
|
var desc = Object.getOwnPropertyDescriptor(
|
|
DataView.prototype, Symbol.toStringTag);
|
|
assertTrue(desc.configurable);
|
|
assertFalse(desc.enumerable);
|
|
assertFalse(desc.writable);
|
|
assertEquals("DataView", desc.value);
|
|
}
|
|
|
|
|
|
// General tests for properties
|
|
|
|
// Test property attribute [[Enumerable]]
|
|
function TestEnumerable(func, obj) {
|
|
function props(x) {
|
|
var array = [];
|
|
for (var p in x) array.push(p);
|
|
return array.sort();
|
|
}
|
|
assertArrayEquals([], props(func));
|
|
assertArrayEquals([], props(func.prototype));
|
|
if (obj)
|
|
assertArrayEquals([], props(obj));
|
|
}
|
|
TestEnumerable(ArrayBuffer, new ArrayBuffer());
|
|
for(i = 0; i < typedArrayConstructors.length; i++) {
|
|
TestEnumerable(typedArrayConstructors[i]);
|
|
}
|
|
TestEnumerable(DataView, new DataView(new ArrayBuffer()));
|
|
|
|
// Test arbitrary properties on ArrayBuffer
|
|
function TestArbitrary(m) {
|
|
function TestProperty(map, property, value) {
|
|
map[property] = value;
|
|
assertEquals(value, map[property]);
|
|
}
|
|
for (var i = 0; i < 20; i++) {
|
|
TestProperty(m, 'key' + i, 'val' + i);
|
|
TestProperty(m, 'foo' + i, 'bar' + i);
|
|
}
|
|
}
|
|
TestArbitrary(new ArrayBuffer(256));
|
|
for(i = 0; i < typedArrayConstructors.length; i++) {
|
|
TestArbitrary(new typedArrayConstructors[i](10));
|
|
}
|
|
TestArbitrary(new DataView(new ArrayBuffer(256)));
|
|
|
|
|
|
// Test direct constructor call
|
|
assertThrows(function() { ArrayBuffer(); }, TypeError);
|
|
assertThrows(function() { DataView(new ArrayBuffer()); }, TypeError);
|
|
|
|
function TestNonConfigurableProperties(constructor) {
|
|
var arr = new constructor([100])
|
|
assertFalse(Object.getOwnPropertyDescriptor(arr,"0").configurable)
|
|
assertFalse(delete arr[0])
|
|
}
|
|
|
|
for(i = 0; i < typedArrayConstructors.length; i++) {
|
|
TestNonConfigurableProperties(typedArrayConstructors[i]);
|
|
}
|
|
|