/// <summary>
/// Removes the specified <paramref name="key"/> from the <paramref name="cache" />.
/// </summary>
/// <param name="cache">The cache to use.</param>
/// <param name="key">The key to remove.</param>
/// <param name="scheduler">Scheduler to perform the remove action on.</param>
/// <returns>
/// An observable stream that indicates whether the <paramref name="key"/> was removed successfully.
/// </returns>
/// <remarks>
/// The returned observable stream of [true] or [false] indicates whether the <paramref name="key"/> was removed successfully.
/// </remarks>
public static IObservable <bool> Remove <TKey, TValue>(this IObservableCache <TKey, TValue> cache, TKey key, IScheduler scheduler = null)
{
if (cache == null)
{
throw new ArgumentNullException(nameof(cache));
}
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
return(cache.Remove(Observable.Return(key), scheduler));
}
public void ConverterObservableCacheTests()
{
IObservableCache cache = InstantiateCache();
IConverter cDown = new ConvertDown();
IConverter cUp = new ConvertUp();
TestCacheListener listener = new TestCacheListener();
IObservableCache convCache = ConverterCollections.GetObservableCache(cache, cUp, cDown, cUp, cDown);
Assert.IsNotNull(convCache);
//AddCacheListener(listener)
convCache.AddCacheListener(listener);
Assert.AreEqual(listener.inserted, 0);
convCache.Add(1, 1);
Assert.AreEqual(listener.inserted, 1);
Assert.AreEqual(listener.updated, 0);
convCache[1] = 2;
Assert.AreEqual(listener.updated, 1);
Assert.AreEqual(listener.deleted, 0);
convCache.Remove(1);
Assert.AreEqual(listener.deleted, 1);
//RemoveCacheListener(listener)
convCache.RemoveCacheListener(listener);
Assert.AreEqual(listener.inserted, 1);
convCache.Add(1, 1);
Assert.AreEqual(listener.inserted, 1);
listener.inserted = listener.updated = listener.deleted = 0;
convCache.Clear();
//AddCacheListener(listener, key, isLite);
convCache.AddCacheListener(listener, "1", true);
for (int i = 0; i < 3; i++)
{
convCache.Add(i, i);
}
Assert.AreEqual(listener.inserted, 1);
Assert.AreEqual(listener.updated, 0);
Assert.AreEqual(listener.deleted, 0);
for (int i = 0; i < 3; i++)
{
convCache[i] = i + 1;
}
Assert.AreEqual(listener.inserted, 1);
Assert.AreEqual(listener.updated, 1);
Assert.AreEqual(listener.deleted, 0);
convCache.Clear();
Assert.AreEqual(listener.inserted, 1);
Assert.AreEqual(listener.updated, 1);
Assert.AreEqual(listener.deleted, 1);
//RemoveCacheListener(listener, key)
convCache.RemoveCacheListener(listener, "1");
convCache.Add(1, 1);
Assert.AreEqual(listener.inserted, 1);
listener.inserted = listener.updated = listener.deleted = 0;
convCache.Clear();
IFilter filter = AlwaysFilter.Instance;
//AddCacheListener(listener, filter, isLite)
convCache.AddCacheListener(listener, filter, true);
for (int i = 0; i < 3; i++)
{
convCache.Add(i, i);
}
Assert.AreEqual(listener.inserted, 3);
Assert.AreEqual(listener.updated, 0);
Assert.AreEqual(listener.deleted, 0);
for (int i = 0; i < 3; i++)
{
convCache[i] = i + 1;
}
Assert.AreEqual(listener.inserted, 3);
Assert.AreEqual(listener.updated, 3);
Assert.AreEqual(listener.deleted, 0);
convCache.Clear();
Assert.AreEqual(listener.inserted, 3);
Assert.AreEqual(listener.updated, 3);
Assert.AreEqual(listener.deleted, 3);
//RemoveCacheListener(listener, filter)
convCache.RemoveCacheListener(listener, filter);
convCache.Add(1, 1);
Assert.AreEqual(listener.inserted, 3);
Assert.IsInstanceOf(typeof(ConverterCollections.ConverterObservableCache), convCache);
ConverterCollections.ConverterObservableCache coc =
convCache as ConverterCollections.ConverterObservableCache;
Assert.IsNotNull(coc);
Assert.AreEqual(coc.ObservableCache, cache);
}