public void Test_ColaOrderedDictionary_Add()
{
var cmp = new CountingComparer <int>();
var cola = new ColaOrderedDictionary <int, string>(cmp);
Assert.That(cola.Count, Is.EqualTo(0));
cola.Add(42, "42");
cola.Debug_Dump();
Assert.That(cola.Count, Is.EqualTo(1));
Assert.That(cola.ContainsKey(42), Is.True);
cola.Add(1, "1");
cola.Debug_Dump();
Assert.That(cola.Count, Is.EqualTo(2));
Assert.That(cola.ContainsKey(1), Is.True);
cola.Add(66, "66");
cola.Debug_Dump();
Assert.That(cola.Count, Is.EqualTo(3));
Assert.That(cola.ContainsKey(66), Is.True);
cola.Add(123, "123");
cola.Debug_Dump();
Assert.That(cola.Count, Is.EqualTo(4));
Assert.That(cola.ContainsKey(123), Is.True);
for (int i = 1; i < 100; i++)
{
cola.Add(-i, (-i).ToString());
}
cola.Debug_Dump();
cmp.Reset();
cola.ContainsKey(-99);
Console.WriteLine("Lookup last inserted: " + cmp.Count);
cmp.Reset();
cola.ContainsKey(42);
Console.WriteLine("Lookup first inserted: " + cmp.Count);
cmp.Reset();
cola.ContainsKey(77);
Console.WriteLine("Lookup not found: " + cmp.Count);
var keys = new List <int>();
foreach (var kvp in cola)
{
Assert.That(kvp.Value, Is.EqualTo(kvp.Key.ToString()));
keys.Add(kvp.Key);
}
Assert.That(keys.Count, Is.EqualTo(cola.Count));
Assert.That(keys, Is.Ordered);
Console.WriteLine(String.Join(", ", keys));
}
public void Test_Check_Costs()
{
const int N = 100;
var cmp = new CountingComparer <Slice>(Comparer <Slice> .Default);
var cola = new ColaOrderedSet <Slice>(cmp);
Console.WriteLine(String.Format(CultureInfo.InvariantCulture, "Parameters: N = {0}, Log(N) = {1}, Log2(N) = {2}, N.Log2(N) = {3}", N, Math.Log(N), Math.Log(N, 2), N * Math.Log(N, 2)));
Console.WriteLine("Inserting (" + N + " items)");
for (int i = 0; i < N; i++)
{
cola.Add(FdbTuple.EncodeKey(i << 1));
}
Console.WriteLine("> " + cmp.Count + " cmps (" + ((double)cmp.Count / N) + " / insert)");
cola.Debug_Dump();
Console.WriteLine("Full scan (" + (N << 1) + " lookups)");
cmp.Reset();
int n = 0;
for (int i = 0; i < (N << 1); i++)
{
if (cola.Contains(FdbTuple.EncodeKey(i)))
{
++n;
}
}
Assert.That(n, Is.EqualTo(N));
Console.WriteLine("> " + cmp.Count + " cmps (" + ((double)cmp.Count / (N << 1)) + " / lookup)");
cmp.Reset();
n = 0;
int tail = Math.Min(16, N >> 1);
int offset = N - tail;
Console.WriteLine("Tail scan (" + tail + " lookups)");
for (int i = 0; i < tail; i++)
{
if (cola.Contains(FdbTuple.EncodeKey(offset + i)))
{
++n;
}
}
Console.WriteLine("> " + cmp.Count + " cmps (" + ((double)cmp.Count / tail) + " / lookup)");
Console.WriteLine("ForEach");
cmp.Reset();
int p = 0;
foreach (var x in cola)
{
Assert.That(FdbTuple.DecodeKey <int>(x), Is.EqualTo(p << 1));
++p;
}
Assert.That(p, Is.EqualTo(N));
Console.WriteLine("> " + cmp.Count + " cmps (" + ((double)cmp.Count / N) + " / item)");
}