public void ExpandAndShrink()
{
var freeList = new FreeList <string>();
freeList.GetValues().Length.Should().Be(4);
var a = freeList.Add("a");
var b = freeList.Add("b");
var c = freeList.Add("c");
var d = freeList.Add("d");
freeList.GetValues().Length.Should().Be(4);
var e = freeList.Add("e");
var f = freeList.Add("f");
var g = freeList.Add("g");
var h = freeList.Add("h");
freeList.GetValues().Length.Should().Be(8);
foreach (var subscription in new[] { a, b, c, d, e, f, g, h })
{
freeList.Remove(subscription, true);
}
freeList.GetCount().Should().Be(0);
freeList.GetValues().Length.Should().Be(8);
var subscriptions = Enumerable.Range(100, 9).Select(x => freeList.Add(x.ToString())).ToArray();
freeList.GetCount().Should().Be(9);
freeList.GetValues().Length.Should().Be(16);
foreach (var subscription in subscriptions)
{
freeList.Remove(subscription, true);
}
freeList.GetCount().Should().Be(0);
freeList.GetValues().Length.Should().Be(4);
}
public void AddRemoveTrim()
{
var list = new FreeList <string>();
var a = list.Add("a");
var b = list.Add("b");
var c = list.Add("c");
var d = list.Add("d");
var e = list.Add("e");
list.GetCount().Should().Be(5);
var items = list.GetValues();
items.Count().Should().Be(8);
items.Where(x => x != null).Should().BeEquivalentTo("a", "b", "c", "d", "e");
list.Remove(c, true);
list.Remove(e, true);
list.GetCount().Should().Be(3);
list.GetValues().Where(x => x != null).Should().BeEquivalentTo("a", "b", "d");
foreach (var i in Enumerable.Range(0, 30))
{
list.Add(i.ToString()); // 30
}
list.Remove(a, true);
list.Remove(b, true);
list.Remove(d, true);
list.Add("30");
list.GetValues().Where(x => x != null).Should().BeEquivalentTo(Enumerable.Range(0, 31).Select(x => x.ToString()));
}