public void TestConcurrentCacheAccess()
{
var mockFileSystem = new MockFileSystem();
var diskCache = new DiskCache("c:\\CacheRoot", 10, mockFileSystem);
long cacheFill = 0;
List <Task> tasks = new List <Task>();
for (int i = 0; i < 24; i++)
{
var t = Task.Run(async() =>
{
for (int k = 0; k < 100; k++)
{
for (int j = 0; j < 40; j++)
{
var keyString = j.ToString();
var cacheEntry = await diskCache.GetOrAddAsync(keyString,
(key, sink, cacheControl) =>
{
Interlocked.Increment(ref cacheFill);
var keystream = key.StringToStream();
return(keystream.CopyToAsync(sink));
}, new CacheControl(), CancellationToken.None);
try {
var cacheEntryString = cacheEntry.Value().StreamToString();
Assert.AreEqual(keyString, cacheEntryString);
} finally
{
await cacheEntry.DisposeAsync();
}
}
}
});
tasks.Add(t);
}
Task.WaitAll(tasks.ToArray());
Assert.AreEqual(10, mockFileSystem.DirectoryGetFiles("c:\\CacheRoot\\tmp").Length);
}