public void TestGets()
{
SimpleCacheStatistics stats = new SimpleCacheStatistics();
int countHits = 0;
int countMisses = 0;
Assert.AreEqual(stats.TotalGets, 0);
Assert.AreEqual(stats.TotalGetsMillis, 0);
Assert.AreEqual(stats.AverageGetMillis, 0);
Assert.AreEqual(stats.HitProbability, 0);
long start = DateTimeUtils.GetSafeTimeMillis();
Thread.Sleep(10); //so that TotalGetsMillis wouldn't be 0
stats.RegisterHit(start);
countHits++;
Assert.AreEqual(stats.TotalGets, countHits);
Assert.AreEqual(stats.AverageGetMillis, (double)stats.TotalGetsMillis);
Assert.AreEqual(stats.HitProbability, 1);
start = DateTimeUtils.GetSafeTimeMillis();
Thread.Sleep(10);
stats.RegisterMiss(start);
countMisses++;
Assert.AreEqual(stats.TotalGets, countHits + countMisses);
Assert.AreEqual(stats.AverageGetMillis, (double)stats.TotalGetsMillis / (double)(countHits + countMisses));
Assert.AreEqual(stats.HitProbability, 0.5);
int n = 5;
stats.RegisterHits(n, 0);
countHits += n;
Assert.AreEqual(stats.TotalGets, countHits + countMisses);
Assert.AreEqual(stats.AverageGetMillis, (double)stats.TotalGetsMillis / (double)(countHits + countMisses));
stats.ResetHitStatistics();
Assert.AreEqual(stats.TotalGets, 0);
Assert.AreEqual(stats.TotalGetsMillis, 0);
Assert.AreEqual(stats.AverageGetMillis, 0);
}
public void TestMisses()
{
SimpleCacheStatistics stats = new SimpleCacheStatistics();
int count = 0;
Assert.AreEqual(stats.CacheMisses, count);
Assert.AreEqual(stats.CacheMissesMillis, 0);
Assert.AreEqual(stats.AverageMissMillis, 0);
Assert.AreEqual(stats.HitProbability, 0);
long start = DateTimeUtils.GetSafeTimeMillis();
Thread.Sleep(10); //so that CacheMissesMillis wouldn't be 0
stats.RegisterMiss(start);
count++;
Assert.AreEqual(stats.CacheMisses, count);
Assert.AreEqual(stats.AverageMissMillis, (double)stats.CacheMissesMillis);
stats.RegisterMiss(0);
count++;
Assert.AreEqual(stats.CacheMisses, count);
Assert.AreEqual(stats.AverageMissMillis, (double)stats.CacheMissesMillis / (double)count);
int n = 5;
start = DateTimeUtils.GetSafeTimeMillis();
Thread.Sleep(10);
stats.RegisterMisses(n, start);
count += n;
Assert.AreEqual(stats.CacheMisses, count);
Assert.AreEqual(stats.AverageMissMillis, (double)stats.CacheMissesMillis / (double)count);
Assert.AreEqual(stats.HitProbability, 0);
stats.ResetHitStatistics();
Assert.AreEqual(stats.CacheMisses, 0);
Assert.AreEqual(stats.CacheMissesMillis, 0);
Assert.AreEqual(stats.AverageMissMillis, 0);
}
public void TestPuts()
{
SimpleCacheStatistics stats = new SimpleCacheStatistics();
int count = 0;
Assert.AreEqual(stats.TotalPuts, count);
Assert.AreEqual(stats.TotalPutsMillis, 0);
Assert.AreEqual(stats.AveragePutMillis, 0);
long start = DateTimeUtils.GetSafeTimeMillis();
Thread.Sleep(10); //so that TotalPutsMillis wouldn't be 0
stats.RegisterPut(start);
count++;
Assert.AreEqual(stats.TotalPuts, count);
Assert.AreEqual(stats.AveragePutMillis, (double)stats.TotalPutsMillis);
stats.RegisterPut(0);
count++;
Assert.AreEqual(stats.TotalPuts, count);
Assert.AreEqual(stats.AveragePutMillis, (double)stats.TotalPutsMillis / (double)count);
int n = 5;
start = DateTimeUtils.GetSafeTimeMillis();
Thread.Sleep(10);
stats.RegisterPuts(n, start);
count += n;
Assert.AreEqual(stats.TotalPuts, count);
Assert.AreEqual(stats.AveragePutMillis, (double)stats.TotalPutsMillis / (double)count);
stats.ResetHitStatistics();
Assert.AreEqual(stats.TotalPuts, 0);
Assert.AreEqual(stats.TotalPutsMillis, 0);
Assert.AreEqual(stats.AveragePutMillis, 0);
}
