61 lines
1.7 KiB
JavaScript
61 lines
1.7 KiB
JavaScript
iframe = document.createElement("IFRAME");
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iframe.src = "about:blank";
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document.body.appendChild(iframe);
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iframe.contentWindow.document.body.textContent = "Nothing to see here.";
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storageEventList = new Array();
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iframe.contentWindow.onstorage = function(e) {
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window.parent.storageEventList.push(e);
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};
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function runAfterNStorageEvents(callback, expectedNumEvents)
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{
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countStorageEvents(callback, expectedNumEvents, 0)
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}
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function countStorageEvents(callback, expectedNumEvents, times)
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{
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function onTimeout()
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{
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var currentCount = storageEventList.length;
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if (currentCount == expectedNumEvents) {
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callback();
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} else if (currentCount > expectedNumEvents) {
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msg = "got at least " + currentCount + ", expected only " + expectedNumEvents + " events";
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callback(msg);
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} else if (times > 50) {
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msg = "Timeout: only got " + currentCount + ", expected " + expectedNumEvents + " events";
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callback(msg);
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} else {
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countStorageEvents(callback, expectedNumEvents, times+1);
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}
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}
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setTimeout(onTimeout, 20);
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}
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function clearStorage(storageName, callback)
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{
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if (window[storageName].length === 0) {
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storageEventList = [];
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setTimeout(callback, 0);
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} else {
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window[storageName].clear();
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runAfterNStorageEvents(function() {
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storageEventList = [];
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callback();
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}, 1);
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}
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}
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function testStorages(testCallback)
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{
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testCallback("sessionStorage");
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var hit = false;
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add_result_callback(function() {
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if (!hit) {
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hit = true;
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testCallback("localStorage");
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}
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});
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}
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