gecko-dev/dom/file/test/helpers.js

179 строки
3.6 KiB
JavaScript

/**
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/
*/
const IndexedDatabaseKey = "IDB";
const DeviceStorageKey = "DS";
var fileStorages = [
{ key: IndexedDatabaseKey }
// { key: DeviceStorageKey }
];
var utils = SpecialPowers.getDOMWindowUtils(window);
var testGenerator = testSteps();
function runTest()
{
allowUnlimitedQuota();
SimpleTest.waitForExplicitFinish();
testGenerator.next();
}
function finishTest()
{
resetUnlimitedQuota();
SimpleTest.executeSoon(function() {
testGenerator.close();
SimpleTest.finish();
});
}
function grabEventAndContinueHandler(event)
{
testGenerator.send(event);
}
function continueToNextStep()
{
SimpleTest.executeSoon(function() {
testGenerator.next();
});
}
function errorHandler(event)
{
ok(false, "indexedDB error, code " + event.target.errorCode);
finishTest();
}
function unexpectedSuccessHandler()
{
ok(false, "Got success, but did not expect it!");
finishTest();
}
function ExpectError(name)
{
this._name = name;
}
ExpectError.prototype = {
handleEvent: function(event)
{
is(event.type, "error", "Got an error event");
is(event.target.error.name, this._name, "Expected error was thrown.");
event.preventDefault();
event.stopPropagation();
grabEventAndContinueHandler(event);
}
};
function addPermission(type, allow, url)
{
if (!url) {
url = window.document;
}
SpecialPowers.addPermission(type, allow, url);
}
function removePermission(type, url)
{
if (!url) {
url = window.document;
}
SpecialPowers.removePermission(type, url);
}
function allowUnlimitedQuota(url)
{
addPermission("indexedDB-unlimited", true, url);
}
function resetUnlimitedQuota(url)
{
removePermission("indexedDB-unlimited", url);
}
function getFileHandle(fileStorageKey, name)
{
var requestService = SpecialPowers.getDOMRequestService();
var request = requestService.createRequest(window);
switch (fileStorageKey) {
case IndexedDatabaseKey:
var dbname = window.location.pathname;
indexedDB.open(dbname, 1).onsuccess = function(event) {
var db = event.target.result;
db.mozCreateFileHandle(name).onsuccess = function(event) {
var fileHandle = event.target.result;
requestService.fireSuccess(request, fileHandle);
}
}
break;
case DeviceStorageKey:
var dbname = window.location.pathname;
indexedDB.open(dbname, 1).onsuccess = function(event) {
var db = event.target.result;
db.mozCreateFileHandle(name).onsuccess = function(event) {
var fileHandle = event.target.result;
requestService.fireSuccess(request, fileHandle);
}
}
break;
}
return request;
}
function getBuffer(size)
{
let buffer = new ArrayBuffer(size);
is(buffer.byteLength, size, "Correct byte length");
return buffer;
}
function getRandomBuffer(size)
{
let buffer = getBuffer(size);
let view = new Uint8Array(buffer);
for (let i = 0; i < size; i++) {
view[i] = parseInt(Math.random() * 255)
}
return buffer;
}
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, buffer)
{
return utils.getBlob([buffer], {type: type});
}
function getRandomBlob(size)
{
return getBlob("binary/random", getRandomBuffer(size));
}
function getFileId(blob)
{
return utils.getFileId(blob);
}