private static void AddCollectableItems(WeakValueDictionary <int, object> c, int startKey, int count)
{
for (int i = 0; i < count; i++)
{
c.Add(startKey++, new object());
}
}
public void When_element_is_added_twice_with_the_same_key_Then_exception_is_thrown()
{
var dict = new WeakValueDictionary <int, Item> {
{ 0, new Item() }
};
Assert.Throws <ArgumentException>(() => dict.Add(0, new Item()));
}
public void EnumerationCleaning()
{
var c = new WeakValueDictionary <int, object>();
object x = new object();
using (NoGCRegion.Enter(1000)) {
c.Add(0, x);
c.Add(1, x);
c.Add(2, x);
AddCollectableItems(c, 3, 3);
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(6, c.UnsafeCount);
Assert.IsTrue(c.ContainsKey(1));
#if DEBUG || !NETFRAMEWORK // Causes entry with key 4 not to collection on NETFW release builds
Assert.IsTrue(c.ContainsKey(4));
#endif
}
Helpers.CollectAndWait();
Assert.IsTrue(c.ContainsKey(1));
Assert.IsFalse(c.ContainsKey(4));
foreach (object o in c)
{
}
Assert.IsTrue(c.Remove(0));
Assert.IsTrue(c.Remove(1));
Assert.IsFalse(c.Remove(4));
#if NETCOREAPP2_2 // NS2.0 target does not support removing stale entries as items are encountered.
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(4, c.UnsafeCount);
#else
Assert.AreEqual(0, c.AddCountSinceLastClean);
Assert.AreEqual(1, c.UnsafeCount);
#endif
GC.KeepAlive(x);
}
private SemaphoreSlim GetSemaphoreForContainer(string container)
{
lock (Semaphores)
{
var semaphore = Semaphores.GetValueOrDefault(container);
if (semaphore == null)
{
semaphore = new SemaphoreSlim(1, 1);
Semaphores.Add(container, semaphore);
}
return(semaphore);
}
}
private SemaphoreSlim GetSemaphoreForPayment(int paymentId)
{
lock (semaphores)
{
var semaphore = semaphores.GetValueOrDefault(paymentId);
if (semaphore == null)
{
semaphore = new SemaphoreSlim(1, 1);
semaphores.Add(paymentId, semaphore);
}
return(semaphore);
}
}
public void Clean()
{
var c = new WeakValueDictionary <int, object>();
object x = new object();
using (NoGCRegion.Enter(1000)) {
c.Add(0, x);
c.Add(1, x);
c.Add(2, x);
AddCollectableItems(c, 3, 3);
Assert.AreEqual(6, c.AddCountSinceLastClean);
Assert.AreEqual(6, c.UnsafeCount);
}
Helpers.CollectAndWait();
c.Clean();
Assert.AreEqual(0, c.AddCountSinceLastClean);
Assert.AreEqual(3, c.UnsafeCount);
GC.KeepAlive(x);
}