public void AddAndReplaceEntries_AreThreadSafe()
{
var cache = new ApplicationCache(
new CacheOptions
{
MemoryCacheOptions = new MemoryCacheOptions
{
ExpirationScanFrequency = TimeSpan.Zero,
SizeLimit = 20,
CompactionPercentage = 0.5
}
});
var cts = new CancellationTokenSource();
var random = new Random();
var task0 = Task.Run(() =>
{
while (!cts.IsCancellationRequested)
{
var entrySize = random.Next(0, 5);
cache.Set <object>(new ApplicationKey(random.Next(0, 10).ToString()), entrySize, new MemoryCacheEntryOptions {
Size = entrySize
});
}
});
var task1 = Task.Run(() =>
{
while (!cts.IsCancellationRequested)
{
var entrySize = random.Next(0, 5);
cache.Set <object>(new ApplicationKey(random.Next(0, 10).ToString()), entrySize, new MemoryCacheEntryOptions {
Size = entrySize
});
}
});
var task2 = Task.Run(() =>
{
while (!cts.IsCancellationRequested)
{
var entrySize = random.Next(0, 5);
cache.Set <object>(new ApplicationKey(random.Next(0, 10).ToString()), entrySize, new MemoryCacheEntryOptions {
Size = entrySize
});
}
});
cts.CancelAfter(TimeSpan.FromSeconds(5));
var task3 = Task.Delay(TimeSpan.FromSeconds(7));
Task.WaitAll(task0, task1, task2, task3);
Assert.Equal(TaskStatus.RanToCompletion, task0.Status);
Assert.Equal(TaskStatus.RanToCompletion, task1.Status);
Assert.Equal(TaskStatus.RanToCompletion, task2.Status);
Assert.Equal(TaskStatus.RanToCompletion, task3.Status);
Assert.InRange(cache.Count(), 0, 20);
}