public void Can_Add_And_Expire_Struct_Strongly_Typed_With_Null()
{
var now = DateTime.Now;
AppPolicyCache.Insert("DateTimeTest", () => now, new TimeSpan(0, 0, 0, 0, 200));
Assert.AreEqual(now, AppCache.GetCacheItem <DateTime>("DateTimeTest"));
Assert.AreEqual(now, AppCache.GetCacheItem <DateTime?>("DateTimeTest"));
Thread.Sleep(300); // sleep longer than the cache expiration
Assert.AreEqual(default(DateTime), AppCache.GetCacheItem <DateTime>("DateTimeTest"));
Assert.AreEqual(null, AppCache.GetCacheItem <DateTime?>("DateTimeTest"));
}