gecko/dom/indexedDB/test/file.js

217 lines
4.8 KiB
JavaScript

/**
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/
*/
const DEFAULT_QUOTA = 50 * 1024 * 1024;
var bufferCache = [];
var utils = SpecialPowers.getDOMWindowUtils(window);
if (!SpecialPowers.isMainProcess()) {
window.runTest = function() {
todo(false, "Test disabled in child processes, for now");
finishTest();
}
}
function getView(size)
{
let buffer = new ArrayBuffer(size);
let view = new Uint8Array(buffer);
is(buffer.byteLength, size, "Correct byte length");
return view;
}
function getRandomView(size)
{
let view = getView(size);
for (let i = 0; i < size; i++) {
view[i] = parseInt(Math.random() * 255)
}
return view;
}
function compareBuffers(buffer1, buffer2)
{
if (buffer1.byteLength != buffer2.byteLength) {
return false;
}
let view1 = new Uint8Array(buffer1);
let view2 = new Uint8Array(buffer2);
for (let i = 0; i < buffer1.byteLength; i++) {
if (view1[i] != view2[i]) {
return false;
}
}
return true;
}
function getBlob(type, view)
{
return SpecialPowers.unwrap(utils.getBlob([view], {type: type}));
}
function getFile(name, type, view)
{
return SpecialPowers.unwrap(utils.getFile(name, [view], {type: type}));
}
function getRandomBlob(size)
{
return getBlob("binary/random", getRandomView(size));
}
function getRandomFile(name, size)
{
return getFile(name, "binary/random", getRandomView(size));
}
function getNullBlob(size)
{
return getBlob("binary/null", getView(size));
}
function getNullFile(name, size)
{
return getFile(name, "binary/null", getView(size));
}
function verifyBuffers(buffer1, buffer2)
{
ok(compareBuffers(buffer1, buffer2), "Correct blob data");
}
function verifyBlob(blob1, blob2, fileId, blobReadHandler)
{
is(blob1 instanceof Components.interfaces.nsIDOMBlob, true,
"Instance of nsIDOMBlob");
is(blob1 instanceof Components.interfaces.nsIDOMFile,
blob2 instanceof Components.interfaces.nsIDOMFile,
"Instance of nsIDOMFile");
is(blob1.size, blob2.size, "Correct size");
is(blob1.type, blob2.type, "Correct type");
if (blob2 instanceof Components.interfaces.nsIDOMFile) {
is(blob1.name, blob2.name, "Correct name");
}
is(utils.getFileId(blob1), fileId, "Correct file id");
let buffer1;
let buffer2;
for (let i = 0; i < bufferCache.length; i++) {
if (bufferCache[i].blob == blob2) {
buffer2 = bufferCache[i].buffer;
break;
}
}
if (!buffer2) {
let reader = new FileReader();
reader.readAsArrayBuffer(blob2);
reader.onload = function(event) {
buffer2 = event.target.result;
bufferCache.push({ blob: blob2, buffer: buffer2 });
if (buffer1) {
verifyBuffers(buffer1, buffer2);
if (blobReadHandler) {
blobReadHandler();
}
else {
testGenerator.next();
}
}
}
}
let reader = new FileReader();
reader.readAsArrayBuffer(blob1);
reader.onload = function(event) {
buffer1 = event.target.result;
if (buffer2) {
verifyBuffers(buffer1, buffer2);
if (blobReadHandler) {
blobReadHandler();
}
else {
testGenerator.next();
}
}
}
}
function verifyBlobArray(blobs1, blobs2, expectedFileIds)
{
is(blobs1 instanceof Array, true, "Got an array object");
is(blobs1.length, blobs2.length, "Correct length");
if (!blobs1.length) {
return;
}
let verifiedCount = 0;
function blobReadHandler() {
if (++verifiedCount == blobs1.length) {
testGenerator.next();
}
else {
verifyBlob(blobs1[verifiedCount], blobs2[verifiedCount],
expectedFileIds[verifiedCount], blobReadHandler);
}
}
verifyBlob(blobs1[verifiedCount], blobs2[verifiedCount],
expectedFileIds[verifiedCount], blobReadHandler);
}
function grabFileUsageAndContinueHandler(usage, fileUsage)
{
testGenerator.send(fileUsage);
}
function getUsage(usageHandler)
{
let comp = SpecialPowers.wrap(Components);
let idbManager = comp.classes["@mozilla.org/dom/indexeddb/manager;1"]
.getService(comp.interfaces.nsIIndexedDatabaseManager);
let uri = SpecialPowers.getDocumentURIObject(window.document);
let callback = {
onUsageResult: function(uri, usage, fileUsage) {
usageHandler(usage, fileUsage);
}
};
idbManager.getUsageForURI(uri, callback);
}
function scheduleGC()
{
SpecialPowers.exactGC(window, continueToNextStep);
}
function getFileId(file)
{
return utils.getFileId(file);
}
function hasFileInfo(name, id)
{
return utils.getFileReferences(name, id);
}
function getFileRefCount(name, id)
{
let count = {};
utils.getFileReferences(name, id, count);
return count.value;
}
function getFileDBRefCount(name, id)
{
let count = {};
utils.getFileReferences(name, id, {}, count);
return count.value;
}