public void GetOrCreate()
{
var cnt = 0;
var key = 10;
var src = new CacheCollection <int, int>(n => Sigma(n));
src.Created += (s, e) => ++ cnt;
Parallel.For(0, 10, _ => src.GetOrCreate(key));
Task.Delay(200).Wait();
Assert.That(cnt, Is.EqualTo(1));
Assert.That(src.Count, Is.EqualTo(1));
Assert.That(src.TryGetValue(key, out var _), Is.True, nameof(src.TryGetValue));
Assert.That(src.TryGetValue(999, out var _), Is.False, nameof(src.TryGetValue));
Assert.That(src.Contains(key), Is.True, nameof(src.Contains));
Assert.That(src.GetOrCreate(key), Is.EqualTo(55), nameof(src.GetOrCreate));
src.Remove(key);
src.Clear();
Assert.That(src.Count, Is.EqualTo(0));
}
public void GetOrCreate()
{
using (var src = new CacheCollection <int, int>(i => Sigma(i)))
{
var n = 0;
var key = 10;
src.Created += (s, e) => ++ n;
Parallel.For(0, 10, e => src.GetOrCreate(key));
Assert.That(Wait(() => n > 0), "Timeout");
Assert.That(src.Count, Is.EqualTo(1), nameof(src.Count));
Assert.That(src.TryGetValue(key, out _), Is.True, nameof(src.TryGetValue));
Assert.That(src.TryGetValue(999, out _), Is.False, nameof(src.TryGetValue));
Assert.That(src.Contains(key), Is.True, nameof(src.Contains));
Assert.That(src.GetOrCreate(key), Is.EqualTo(55), nameof(src.GetOrCreate));
src.Remove(key);
src.Clear();
Assert.That(src.Count, Is.EqualTo(0));
}
}