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<!DOCTYPE html>
<html>
<!--
Copyright 2011 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.storage.ExpiringStorage</title>
<script src="../base.js"></script>
<script>
goog.require('goog.storage.ExpiringStorage');
goog.require('goog.storage.storage_test');
goog.require('goog.testing.MockClock');
goog.require('goog.testing.jsunit');
goog.require('goog.testing.storage.FakeMechanism');
</script>
</head>
<body>
<script>
function testBasicOperations() {
var mechanism = new goog.testing.storage.FakeMechanism();
var storage = new goog.storage.ExpiringStorage(mechanism);
goog.storage.storage_test.runBasicTests(storage);
}
function testExpiration() {
var mechanism = new goog.testing.storage.FakeMechanism();
var clock = new goog.testing.MockClock(true);
var storage = new goog.storage.ExpiringStorage(mechanism);
// No expiration.
storage.set('first', 'one second', 1000);
storage.set('second', 'permanent');
storage.set('third', 'two seconds', 2000);
storage.set('fourth', 'permanent');
clock.tick(100);
assertEquals('one second', storage.get('first'));
assertEquals('permanent', storage.get('second'));
assertEquals('two seconds', storage.get('third'));
assertEquals('permanent', storage.get('fourth'));
// A key has expired.
clock.tick(1000);
assertUndefined(storage.get('first'));
assertEquals('permanent', storage.get('second'));
assertEquals('two seconds', storage.get('third'));
assertEquals('permanent', storage.get('fourth'));
assertNull(mechanism.get('first'));
// Add an already expired key.
storage.set('fourth', 'one second again', 1000);
assertNull(mechanism.get('fourth'));
assertUndefined(storage.get('fourth'));
// Another key has expired.
clock.tick(1000);
assertEquals('permanent', storage.get('second'));
assertUndefined(storage.get('third'));
assertNull(mechanism.get('third'));
// Clean up.
storage.remove('second');
assertNull(mechanism.get('second'));
assertUndefined(storage.get('second'));
clock.uninstall();
}
function testClockSkew() {
var mechanism = new goog.testing.storage.FakeMechanism();
var storage = new goog.storage.ExpiringStorage(mechanism);
var clock = new goog.testing.MockClock(true);
// Simulate clock skew.
clock.tick(100);
storage.set('first', 'one second', 1000);
clock.reset();
assertUndefined(storage.get('first'));
assertNull(mechanism.get('first'));
clock.uninstall();
}
</script>
</body>
</html>
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