public void GetCurrentStatistics_TrackStatisticsFalse_ReturnsNull()
{
var cache = new MemoryCache(new MemoryCacheOptions {
TrackStatistics = false
});
Assert.Null(cache.GetCurrentStatistics());
}
public void GetCurrentStatistics_UpdateAfterExistingItemExpired_CurrentEstimatedSizeResets(bool sizeLimitIsSet)
{
const string Key = "myKey";
var cache = new MemoryCache(sizeLimitIsSet ?
new MemoryCacheOptions {
TrackStatistics = true, Clock = new SystemClock(), SizeLimit = 10
} :
new MemoryCacheOptions {
TrackStatistics = true, Clock = new SystemClock()
}
);
ICacheEntry entry;
using (entry = cache.CreateEntry(Key))
{
var expirationToken = new TestExpirationToken()
{
ActiveChangeCallbacks = true
};
var mc = new MemoryCacheEntryOptions {
Size = 5
};
cache.Set(Key, new object(), mc.AddExpirationToken(expirationToken));
MemoryCacheStatistics?stats = cache.GetCurrentStatistics();
Assert.NotNull(stats);
Assert.Equal(1, cache.Count);
Assert.Equal(1, stats.CurrentEntryCount);
VerifyCurrentEstimatedSize(5, sizeLimitIsSet, stats);
expirationToken.HasChanged = true;
cache.Set(Key, new object(), mc.AddExpirationToken(expirationToken));
stats = cache.GetCurrentStatistics();
Assert.NotNull(stats);
Assert.Equal(0, cache.Count);
Assert.Equal(0, stats.CurrentEntryCount);
VerifyCurrentEstimatedSize(0, sizeLimitIsSet, stats);
}
}