public void ConcurrentCacheDictionary_Null()
{
var cd = new ConcurrentCacheDictionary <string, int>(EqualityComparer <string> .Default);
Assert.AreEqual(0, cd.Count);
var values = cd.Values;
Assert.AreEqual(4, cd.GetOrAdd(key: null, x => (x ?? "null").Length));
Assert.AreEqual(1, cd.Count);
Assert.AreEqual(1, values.Count());
Assert.IsTrue(values.Contains(4));
Assert.AreEqual(4, cd.GetOrAdd(key: null, x => (x ?? "null").Length));
Assert.AreEqual(1, cd.Count);
Assert.AreEqual(1, values.Count());
Assert.IsTrue(values.Contains(4));
Assert.IsTrue(cd.Remove(key: null));
Assert.AreEqual(0, cd.Count);
Assert.AreEqual(0, values.Count());
cd.Clear();
Assert.AreEqual(0, cd.Count);
Assert.AreEqual(0, values.Count());
}
public void ConcurrentCacheDictionary_Enumerate()
{
var cd = new ConcurrentCacheDictionary <string, int>(EqualityComparer <string> .Default);
cd.GetOrAdd("foo", s => s == null ? 0 : s.Length);
cd.GetOrAdd(key: null, s => s == null ? 0 : s.Length);
var res = cd.ToArray();
Assert.AreEqual(2, res.Length);
Assert.IsTrue(res.Any(x => x.Key == null && x.Value == 0));
Assert.IsTrue(res.Any(x => x.Key == "foo" && x.Value == 3));
Assert.IsNotNull(((IEnumerable)cd).GetEnumerator());
}
public void ConcurrentCacheDictionary_Simple()
{
var cd = new ConcurrentCacheDictionary <int, int>(EqualityComparer <int> .Default);
Assert.AreEqual(0, cd.Count);
var values = cd.Values;
Assert.AreEqual(42, cd.GetOrAdd(21, x => x * 2));
Assert.AreEqual(1, cd.Count);
Assert.AreEqual(1, values.Count());
Assert.IsTrue(values.Contains(42));
Assert.AreEqual(42, cd.GetOrAdd(21, x => x * 2));
Assert.AreEqual(1, cd.Count);
Assert.AreEqual(1, values.Count());
Assert.IsTrue(values.Contains(42));
Assert.AreEqual(44, cd.GetOrAdd(22, x => x * 2));
Assert.AreEqual(2, cd.Count);
Assert.AreEqual(2, values.Count());
Assert.IsTrue(values.Contains(42) && values.Contains(44));
Assert.IsTrue(cd.Remove(21));
Assert.AreEqual(1, cd.Count);
Assert.AreEqual(1, values.Count());
Assert.IsTrue(values.Contains(44));
Assert.IsFalse(cd.Remove(21));
Assert.AreEqual(1, cd.Count);
Assert.AreEqual(1, values.Count());
Assert.IsTrue(values.Contains(44));
Assert.IsFalse(cd.Remove(-1));
Assert.AreEqual(1, cd.Count);
Assert.AreEqual(1, values.Count());
Assert.IsTrue(values.Contains(44));
cd.Clear();
Assert.AreEqual(0, cd.Count);
Assert.AreEqual(0, values.Count());
}
