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window.jsTestIsAsync = true;
description('Test passing ArrayBuffers and ArrayBufferViews in messages.');
window.testsComplete = 0;
function classCompare(testName, got, sent) {
var classString = Object.prototype.toString;
var gotClass = classString.call(got);
var sentClass = classString.call(sent);
if (gotClass !== sentClass) {
testFailed(testName + ": class " + sentClass + " became " + gotClass);
return false;
} else {
testPassed(testName + ": classes are " + sentClass);
return true;
}
}
function bufferCompare(testName, got, sent) {
if (!classCompare(testName, got, sent)) {
return false;
}
if (got.byteLength !== sent.byteLength) {
testFailed(testName + ": expected byteLength " + sent.byteLength + " bytes, got " + got.byteLength);
return false;
} else {
testPassed(testName + ": buffer lengths are " + sent.byteLength);
}
var gotReader = new Uint8Array(got);
var sentReader = new Uint8Array(sent);
for (var i = 0; i < sent.byteLength; ++i) {
if (gotReader[i] !== sentReader[i]) {
testFailed(testName + ": buffers differ starting at byte " + i);
return false;
}
}
testPassed(testName + ": buffers have the same contents");
return true;
}
function viewCompare(testName, got, sent) {
if (!classCompare(testName, got, sent)) {
return false;
}
if (!bufferCompare(testName, got.buffer, sent.buffer)) {
return false;
}
if (got.byteOffset !== sent.byteOffset) {
testFailed(testName + ": offset " + sent.byteOffset + " became " + got.byteOffset);
return false;
} else {
testPassed(testName + ": offset is " + sent.byteOffset);
}
if (got.byteLength !== sent.byteLength) {
testFailed(testName + ": length " + sent.byteLength + " became " + got.byteLength);
return false;
} else {
testPassed(testName + ": length is " + sent.byteLength);
}
return true;
}
function typedArrayCompare(testName, got, sent) {
if (!viewCompare(testName, got, sent)) {
return false;
}
if (got.BYTES_PER_ELEMENT !== sent.BYTES_PER_ELEMENT) {
// Sanity checking.
testFailed(testName + ": expected BYTES_PER_ELEMENT " + sent.BYTES_PER_ELEMENT + ", saw " + got.BYTES_PER_ELEMENT);
return false;
}
return true;
}
function dataViewCompare(testName, got, sent) {
return viewCompare(testName, got, sent);
}
function dataViewCompare2(testName, got, sent) {
for (var i = 0; i < 2; ++i) {
if (!dataViewCompare(testName, got[i], sent[i])) {
return false;
}
}
if (got[0].buffer !== got[1].buffer) {
testFailed(testName + ": expected the same ArrayBuffer for both views");
return false;
}
return true;
}
function dataViewCompare3(testName, got, sent) {
for (var i = 0; i < 3; i += 2) {
if (!dataViewCompare(testName, got[i], sent[i])) {
return false;
}
}
if (got[1].x !== sent[1].x || got[1].y !== sent[1].y) {
testFailed(testName + ": {x:1, y:1} was not transferred properly");
return false;
}
if (got[0].buffer !== got[2].buffer) {
testFailed(testName + ": expected the same ArrayBuffer for both views");
return false;
}
return false;
}
function createBuffer(length) {
var buffer = new ArrayBuffer(length);
var view = new Uint8Array(buffer);
for (var i = 0; i < length; ++i) {
view[i] = i + 1;
}
return buffer;
}
function createTypedArray(typedArrayType, length) {
var view = new typedArrayType(length);
for (var i = 0; i < length; ++i) {
view[i] = i + 1;
}
return view;
}
function createTypedArrayOverBuffer(typedArrayType, typedArrayElementSize, length, subStart, subLength) {
var buffer = new ArrayBuffer(length * typedArrayElementSize);
if (subStart === undefined) {
subStart = 0;
subLength = length;
}
return new typedArrayType(buffer, subStart * typedArrayElementSize, subLength);
}
var basicBufferTypes = [
["Int32", Int32Array, 4],
["Uint32", Uint32Array, 4],
["Int8", Int8Array, 1],
["Uint8", Uint8Array, 1],
["Uint8Clamped", Uint8ClampedArray, 1],
["Int16", Int16Array, 2],
["Uint16", Uint16Array, 2],
["Float32", Float32Array, 4],
["Float64", Float64Array, 8]
];
var arrayBuffer1 = createBuffer(1);
var testList = [
['ArrayBuffer0', new ArrayBuffer(0), bufferCompare],
['ArrayBuffer1', createBuffer(1), bufferCompare],
['ArrayBuffer128', createBuffer(128), bufferCompare],
['DataView0', new DataView(new ArrayBuffer(0)), dataViewCompare],
['DataView1', new DataView(createBuffer(1)), dataViewCompare],
['DataView1-dup', [new DataView(arrayBuffer1), new DataView(arrayBuffer1)], dataViewCompare2],
['DataView1-dup2', [new DataView(arrayBuffer1), {x:1, y:1}, new DataView(arrayBuffer1)], dataViewCompare3],
['DataView128', new DataView(createBuffer(128)), dataViewCompare],
['DataView1_offset_at_end', new DataView(createBuffer(1), 1, 0), dataViewCompare],
['DataView128_offset_at_end', new DataView(createBuffer(128), 128, 0), dataViewCompare],
['DataView128_offset_slice_length_0', new DataView(createBuffer(128), 64, 0), dataViewCompare],
['DataView128_offset_slice_length_1', new DataView(createBuffer(128), 64, 1), dataViewCompare],
['DataView128_offset_slice_length_16', new DataView(createBuffer(128), 64, 16), dataViewCompare],
['DataView128_offset_slice_unaligned', new DataView(createBuffer(128), 63, 15), dataViewCompare]
];
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_0", createTypedArray(t[1], 0), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_1", createTypedArray(t[1], 1), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_128", createTypedArray(t[1], 128), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_0_buffer", createTypedArrayOverBuffer(t[1], t[2], 0), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_1_buffer", createTypedArrayOverBuffer(t[1], t[2], 1), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_128_buffer", createTypedArrayOverBuffer(t[1], t[2], 128), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_1_buffer_offset_at_end", createTypedArrayOverBuffer(t[1], t[2], 1, 1, 0), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_128_buffer_offset_at_end", createTypedArrayOverBuffer(t[1], t[2], 128, 128, 0), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_128_buffer_offset_slice_length_0", createTypedArrayOverBuffer(t[1], t[2], 128, 64, 0), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_128_buffer_offset_slice_length_1", createTypedArrayOverBuffer(t[1], t[2], 128, 64, 1), typedArrayCompare];}));
testList = testList.concat(basicBufferTypes.map(function(t)
{return [t[0] + "_128_buffer_offset_slice_length_16", createTypedArrayOverBuffer(t[1], t[2], 128, 64, 16), typedArrayCompare];}));
function doneTest() {
if (++window.testsComplete == testList.length) {
finishJSTest();
}
}
function windowHandleMessage(e) {
var currentTest = testList[e.data.testNum];
var expectedResult = currentTest[1];
try {
currentTest[2](currentTest[0], e.data.testData, expectedResult);
} catch(e) {
testFailed(currentTest[0] + ": unexpected exception " + e);
}
doneTest();
}
window.addEventListener('message', windowHandleMessage);
for (var t = 0; t < testList.length; ++t) {
var currentTest = testList[t];
var message = {testNum: t, testData: currentTest[1]};
try {
window.postMessage(message, '*');
} catch(e) {
testFailed(currentTest[0], ": unexpected postMessage exception " + e);
doneTest();
}
}
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