public void TestReplace()
{
INamedCache cache = CacheFactory.GetCache(CacheName);
cache.Clear();
Hashtable ht = new Hashtable();
ht.Add("key4", 0);
ht.Add("key3", -10);
ht.Add("key2", 45);
ht.Add("key1", 398);
cache.InsertAll(ht);
object result = cache.Replace("key1", 400);
Assert.AreEqual(398, result);
Assert.AreEqual(400, cache["key1"]);
result = cache.Replace("key1", 300, 450);
Assert.AreEqual(false, result);
result = cache.Replace("key1", 400, 450);
Assert.AreEqual(true, result);
Assert.AreEqual(450, cache["key1"]);
}