1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/tests/mochitest/localstorage/test_lowDeviceStorage.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,76 @@
1.4 +<html xmlns="http://www.w3.org/1999/xhtml">
1.5 +<head>
1.6 +<title>Test localStorage usage while in a low device storage situation</title>
1.7 +
1.8 +<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
1.9 +<script type="text/javascript" src="localStorageCommon.js"></script>
1.10 +<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
1.11 +
1.12 +<script type="text/javascript">
1.13 +
1.14 +/*
1.15 +This test does the following:
1.16 +- Stores an item in localStorage.
1.17 +- Checks the stored value.
1.18 +- Emulates a low device storage situation.
1.19 +- Gets the stored item again.
1.20 +- Removes the stored item.
1.21 +- Fails storing a new value.
1.22 +- Emulates recovering from a low device storage situation.
1.23 +- Stores a new value.
1.24 +- Checks the stored value.
1.25 +*/
1.26 +
1.27 +function lowDeviceStorage(lowStorage) {
1.28 + var data = lowStorage ? "full" : "free";
1.29 + os().notifyObservers(null, "disk-space-watcher", data);
1.30 +}
1.31 +
1.32 +function startTest() {
1.33 + // Add a test item.
1.34 + localStorage.setItem("item", "value");
1.35 + is(localStorage.getItem("item"), "value", "getItem()");
1.36 +
1.37 + // Emulates a low device storage situation.
1.38 + lowDeviceStorage(true);
1.39 +
1.40 + // Checks that we can still access to the stored item.
1.41 + is(localStorage.getItem("item"), "value",
1.42 + "getItem() during a device storage situation");
1.43 +
1.44 + // Removes the stored item.
1.45 + localStorage.removeItem("item");
1.46 + is(localStorage.getItem("item"), undefined,
1.47 + "getItem() after removing the item");
1.48 +
1.49 + // Fails storing a new item.
1.50 + try {
1.51 + localStorage.setItem("newItem", "value");
1.52 + ok(false, "Storing a new item is expected to fail");
1.53 + } catch(e) {
1.54 + ok(true, "Got an expected exception " + e);
1.55 + } finally {
1.56 + is(localStorage.getItem("newItem"), undefined,
1.57 + "setItem while device storage is low");
1.58 + }
1.59 +
1.60 + // Emulates recovering from a low device storage situation.
1.61 + lowDeviceStorage(false);
1.62 +
1.63 + // Add a test item after recovering from the low device storage situation.
1.64 + localStorage.setItem("newItem", "value");
1.65 + is(localStorage.getItem("newItem"), "value",
1.66 + "getItem() with available storage");
1.67 +
1.68 + SimpleTest.finish();
1.69 +}
1.70 +
1.71 +SimpleTest.waitForExplicitFinish();
1.72 +
1.73 +</script>
1.74 +
1.75 +</head>
1.76 +
1.77 +<body onload="startTest();">
1.78 +</body>
1.79 +</html>
