public void TimedLRUCache_FlushLRU()
{
TimedLRUCache <int, int> cache;
cache = new TimedLRUCache <int, int>();
Assert.IsFalse(cache.RenewTTD);
cache.Add(0, 0, TimeSpan.FromSeconds(1.0));
cache.Add(1, 1, TimeSpan.FromSeconds(1.0));
cache.Add(2, 2, TimeSpan.FromSeconds(4.0));
cache.Add(3, 3, TimeSpan.FromSeconds(1.0));
cache.Touch(0);
cache.Touch(1);
cache.Touch(3);
// Item 2 should now head the LRU list
Thread.Sleep(TimeSpan.FromSeconds(1) + SysTime.Resolution);
cache.FlushLRU();
// All the items should still be present since
// item 2 hasn't expired yet and will block any
// other items from be purged
Assert.IsTrue(cache.ContainsKey(0));
Assert.IsTrue(cache.ContainsKey(1));
Assert.IsTrue(cache.ContainsKey(2));
Assert.IsTrue(cache.ContainsKey(3));
Thread.Sleep(TimeSpan.FromSeconds(3) + SysTime.Resolution);
// All of the items should have expired by now
cache.FlushLRU();
Assert.IsFalse(cache.ContainsKey(0));
Assert.IsFalse(cache.ContainsKey(1));
Assert.IsFalse(cache.ContainsKey(2));
Assert.IsFalse(cache.ContainsKey(3));
}
public void TimedLRUCache_RenewTTD()
{
TimedLRUCache <int, int> cache;
cache = new TimedLRUCache <int, int>();
cache.RenewTTD = true;
cache.Add(0, 0, TimeSpan.FromSeconds(1.0));
cache.Add(1, 1, TimeSpan.FromSeconds(1.0));
cache.Add(2, 2, TimeSpan.FromSeconds(1.0));
cache.Add(3, 3, TimeSpan.FromSeconds(1.0));
Thread.Sleep(TimeSpan.FromSeconds(1) + SysTime.Resolution);
cache.Touch(0);
cache.Flush();
Assert.IsTrue(cache.ContainsKey(0));
Assert.IsFalse(cache.ContainsKey(1));
Assert.IsFalse(cache.ContainsKey(2));
Assert.IsFalse(cache.ContainsKey(3));
}
public void TimedLRUCache_MaxItems()
{
TimedLRUCache <int, int> cache;
int value;
cache = new TimedLRUCache <int, int>();
Assert.AreEqual(0, cache.Count);
Assert.AreEqual(int.MaxValue, cache.MaxItems);
cache.MaxItems = 3;
//---------------------------------------------
cache.Clear();
for (int i = 0; i < 3; i++)
{
cache.Add(i, i);
}
Assert.AreEqual(3, cache.Count);
cache.Add(3, 3);
Assert.AreEqual(3, cache.Count);
Assert.IsFalse(cache.ContainsKey(0));
Assert.IsTrue(cache.ContainsKey(1));
Assert.IsTrue(cache.ContainsKey(2));
Assert.IsTrue(cache.ContainsKey(3));
//---------------------------------------------
cache.Clear();
for (int i = 0; i < 3; i++)
{
cache[i] = i;
}
Assert.AreEqual(3, cache.Count);
cache[3] = 3;
Assert.AreEqual(3, cache.Count);
Assert.IsFalse(cache.ContainsKey(0));
Assert.IsTrue(cache.ContainsKey(1));
Assert.IsTrue(cache.ContainsKey(2));
Assert.IsTrue(cache.ContainsKey(3));
//---------------------------------------------
cache.Clear();
for (int i = 0; i < 3; i++)
{
cache[i] = i;
}
Assert.AreEqual(3, cache.Count);
cache.MaxItems = 2;
Assert.AreEqual(2, cache.Count);
Assert.IsFalse(cache.ContainsKey(0));
Assert.IsTrue(cache.ContainsKey(1));
Assert.IsTrue(cache.ContainsKey(2));
cache.MaxItems = 3;
//---------------------------------------------
cache.Clear();
for (int i = 0; i < 3; i++)
{
cache[i] = i;
}
Assert.IsTrue(cache.ContainsKey(0));
Assert.AreEqual(3, cache.Count);
cache[3] = 3;
Assert.AreEqual(3, cache.Count);
Assert.IsTrue(cache.ContainsKey(0));
Assert.IsFalse(cache.ContainsKey(1));
Assert.IsTrue(cache.ContainsKey(2));
Assert.IsTrue(cache.ContainsKey(3));
//---------------------------------------------
cache.Clear();
for (int i = 0; i < 3; i++)
{
cache[i] = i;
}
cache.Touch(0);
Assert.AreEqual(3, cache.Count);
cache[3] = 3;
Assert.AreEqual(3, cache.Count);
Assert.IsTrue(cache.ContainsKey(0));
Assert.IsFalse(cache.ContainsKey(1));
Assert.IsTrue(cache.ContainsKey(2));
Assert.IsTrue(cache.ContainsKey(3));
//---------------------------------------------
cache.Clear();
for (int i = 0; i < 3; i++)
{
cache[i] = i;
}
cache.TryGetValue(0, out value);
Assert.AreEqual(3, cache.Count);
cache[3] = 3;
Assert.AreEqual(3, cache.Count);
Assert.IsTrue(cache.ContainsKey(0));
Assert.IsFalse(cache.ContainsKey(1));
Assert.IsTrue(cache.ContainsKey(2));
Assert.IsTrue(cache.ContainsKey(3));
//---------------------------------------------
cache.Clear();
for (int i = 0; i < 6; i++)
{
cache[i] = i;
}
cache.TryGetValue(0, out value);
Assert.AreEqual(3, cache.Count);
cache[3] = 3;
Assert.AreEqual(3, cache.Count);
Assert.IsFalse(cache.ContainsKey(0));
Assert.IsFalse(cache.ContainsKey(1));
Assert.IsFalse(cache.ContainsKey(2));
Assert.IsTrue(cache.ContainsKey(3));
Assert.IsTrue(cache.ContainsKey(4));
Assert.IsTrue(cache.ContainsKey(5));
}
