public void ExpiringDictionary_SnapshotAndRefresh_Refreshes_Items()
{
using (var map = new ExpiringDictionary <int, string>(10, 1)) {
map.Add(1, "A");
map.Add(2, "B");
_Clock.AddMilliseconds(10);
var snapshot = map.SnapshotAndRefresh();
HeartbeatTick();
Assert.AreEqual(2, map.Count);
Assert.AreEqual(2, snapshot.Length);
Assert.IsTrue(snapshot.Contains(new KeyValuePair <int, string>(1, "A")));
Assert.IsTrue(snapshot.Contains(new KeyValuePair <int, string>(2, "B")));
}
}