public void UpdateTest()
{
var q = new TestQ();
q.Add("b", 0, 50);
q.Add("a", 0, 10);
q.Add("c", 0, 100);
Assert.AreEqual(3, q.Items.Count());
q.Update(0);
Assert.AreEqual(3, q.Items.Count());
Assert.IsTrue(q.Items.Any(x => x.Key == "a"));
Assert.IsTrue(q.Items.Any(x => x.Key == "b"));
Assert.IsTrue(q.Items.Any(x => x.Key == "c"));
Assert.IsTrue(q.GetRecentExpired().IsEmpty());
q.Update(10);
Assert.AreEqual(2, q.Items.Count());
Assert.IsTrue(q.Items.Any(x => x.Key == "b"));
Assert.IsTrue(q.Items.Any(x => x.Key == "c"));
Assert.IsTrue(q.GetRecentExpired().All(x => x == "a"));
Assert.IsTrue(q.GetRecentExpired().IsEmpty());
q.Update(49);
Assert.AreEqual(2, q.Items.Count());
Assert.IsTrue(q.Items.Any(x => x.Key == "b"));
Assert.IsTrue(q.Items.Any(x => x.Key == "c"));
Assert.IsTrue(q.GetRecentExpired().IsEmpty());
q.Update(51);
Assert.AreEqual(1, q.Items.Count());
Assert.IsTrue(q.GetRecentExpired().All(x => x == "b"));
Assert.IsTrue(q.Items.Any(x => x.Key == "c"));
q.Update(99);
Assert.AreEqual(1, q.Items.Count());
Assert.IsTrue(q.Items.Any(x => x.Key == "c"));
q.Update(1000);
Assert.IsTrue(q.GetRecentExpired().All(x => x == "c"));
Assert.IsTrue(q.Items.IsEmpty());
}
