function test_DOMStorage_global() { var currentDomain = "mozilla.com"; var globalStorage = window.globalStorage; is(globalStorage instanceof StorageList, true, "globalStorage property"); var storage = globalStorage.namedItem(currentDomain); is(storage instanceof Storage, true, "StorageList namedItem"); var storage2 = globalStorage[currentDomain]; is(storage2 instanceof Storage, true, "StorageList property syntax"); is(storage, storage2, "StorageList namedItem and array return same value"); // the initial value should be null test_DOMStorage_global_Item(storage, "sample", null, 0, "initial"); // if no key is supplied, the return value will be null is(storage.getItem("", "Test"), null, "getItem no key"); exh = false; try { storage.key(0); } catch (ex) { exh = true; } is(exh, true, "key index 0 too high"); // change the value storage.setItem("sample", "This is the first message"); var item = test_DOMStorage_global_Item(storage, "sample", "This is the first message", 1, "setItem"); // change value using property syntax storage.test = "Second message"; test_DOMStorage_global_Item(storage, "test", "Second message", 2, "setItem property"); // change the first value using property syntax storage.sample = "Third message is this"; var item2 = test_DOMStorage_global_Item(storage, "sample", "Third message is this", 2, "setItem property again"); is(item.value, "Third message is this", "other item reference holds updated value"); // change the second value using setItem storage.setItem("test", "Look at this, the fourth message"); test_DOMStorage_global_Item(storage, "test", "Look at this, the fourth message", 2, "setItem again"); // don't use this test currently. The spec says that the same object should // always be returned, but this doesn't happen in chrome due to the wrappers // being different // is(item, item2, "same item always returned"); // using an empty key should not change the value storage.setItem("", "Message Number Five"); test_DOMStorage_global_Item(storage, "test", "Look at this, the fourth message", 2, "setItem no key"); is(storage.getItem("", "Test"), null, "getItem no key"); // now test iteration through the keys var key1 = storage.key(0); var key2 = storage.key(1); is(key1 != key2 && (key1 == "sample" || key1 == "test") && (key2 == "sample" || key2 == "test"), true, "key"); exh = false; try { storage.key(2); } catch (ex) { exh = true; } is(exh, true, "key index 2 too high"); storage.removeItem("sample"); test_DOMStorage_global_Item(storage, "sample", null, 1, "removeItem"); is(item.value, "", "other item reference holds deleted value"); delete storage.test; test_DOMStorage_global_Item(storage, "test", null, 0, "delete item"); storage.removeItem("test"); // now test size constraints // create a string which is 1MB - 4 bytes long. The key will use up this // extra 4 bytes though. var stringbit = "---abcdefghijklmnopqrstuvwxyz---"; var longstring = "This is quite a long string:"; for (var l = 0; l < 32767; l++) longstring += stringbit; var s; for (s = 0; s < 5; s++) storage.setItem("key" + s, longstring); // at this point, there will be 5MB of data stored, so no more is allowed exh = false; try { storage.setItem("keyfail", "One"); } catch (ex) { exh = true; } is(exh, true, "per-domain size constraint"); // change the first item, to free up space storage.setItem("key1", "This"); // there is just under 1MB of space available, so this should fail exh = false; try { storage.setItem("keyfail", longstring); } catch (ex) { exh = true; } is(exh, true, "per-domain size constraint second check"); // now clear up another value, and set it back again storage.removeItem("key2"); storage.setItem("key2", longstring); // this should still fail exh = false; try { storage.setItem(keyfail, longstring); } catch (ex) { exh = true; } is(exh, true, "per-domain size constraint third check"); // this should be stored OK storage.setItem("key2", "Simple string"); for (s = 0; s < 5; s++) storage.removeItem("key" + s); } function test_DOMStorage_global_Item(storage, key, expectedvalue, expectedlength, testid) { var item = storage.getItem(key); if (expectedvalue != null) is(item instanceof StorageItem, true, testid + " is a Storage"); is(expectedvalue == null ? item : "" + item, expectedvalue, testid + " getItem"); var item2 = storage[key]; // skip this check for this test, as the property isn't actually removed if (testid != "removeItem") { if (item === null) is(item2, undefined, testid + " get property syntax"); else is(item2, item, testid + " get property syntax"); } if (expectedvalue != null) is(item2 instanceof StorageItem, true, testid + " property syntax is a Storage"); if (expectedvalue != null) is(item.value, expectedvalue, testid + " value"); is(storage.length, expectedlength, testid + " length"); return item; } function is(left, right, str) { window.opener.wrappedJSObject.SimpleTest.is(left, right, str); }