public void Snapshot_CreatesSnapshotWithCurrentPerformanceCount()
{
this.performanceCounter.AddCacheHitCount(15);
this.performanceCounter.AddCacheMissCount(7);
this.performanceCounter.AddCacheRemoveCount(3);
this.performanceCounter.AddCacheSetCount(1);
BlockStoreCachePerformanceSnapshot snapshot1 = this.performanceCounter.Snapshot();
this.performanceCounter.AddCacheHitCount(50);
this.performanceCounter.AddCacheMissCount(9);
this.performanceCounter.AddCacheRemoveCount(6);
this.performanceCounter.AddCacheSetCount(67);
BlockStoreCachePerformanceSnapshot snapshot2 = this.performanceCounter.Snapshot();
Assert.Equal(15, snapshot1.TotalCacheHitCount);
Assert.Equal(7, snapshot1.TotalCacheMissCount);
Assert.Equal(3, snapshot1.TotalCacheRemoveCount);
Assert.Equal(1, snapshot1.TotalCacheSetCount);
Assert.Equal(65, snapshot2.TotalCacheHitCount);
Assert.Equal(16, snapshot2.TotalCacheMissCount);
Assert.Equal(9, snapshot2.TotalCacheRemoveCount);
Assert.Equal(68, snapshot2.TotalCacheSetCount);
}
public void Constructor_InitializesCounters()
{
var snapshot = new BlockStoreCachePerformanceSnapshot(1301, 2352, 1244, 6452)
{
Start = new DateTime(2017, 1, 1),
Taken = DateTime.UtcNow
};
Assert.Equal(1301, snapshot.TotalCacheHitCount);
Assert.Equal(2352, snapshot.TotalCacheMissCount);
Assert.Equal(1244, snapshot.TotalCacheRemoveCount);
Assert.Equal(6452, snapshot.TotalCacheSetCount);
}
public void SubtractOperator_SubtractsValuesFromMultipleSnapshots_CreatesNewSnapshot()
{
var snapshot = new BlockStoreCachePerformanceSnapshot(1301, 2352, 1244, 6452)
{
Start = new DateTime(2017, 1, 1),
Taken = new DateTime(2017, 1, 1, 1, 1, 1)
};
var snapshot2 = new BlockStoreCachePerformanceSnapshot(4312, 3552, 2216, 9023)
{
Start = new DateTime(2017, 1, 1),
Taken = new DateTime(2017, 1, 1, 3, 1, 1)
};
BlockStoreCachePerformanceSnapshot snapshot3 = snapshot2 - snapshot;
Assert.Equal(3011, snapshot3.TotalCacheHitCount);
Assert.Equal(1200, snapshot3.TotalCacheMissCount);
Assert.Equal(972, snapshot3.TotalCacheRemoveCount);
Assert.Equal(2571, snapshot3.TotalCacheSetCount);
Assert.Equal(new DateTime(2017, 1, 1, 1, 1, 1), snapshot3.Start);
Assert.Equal(new DateTime(2017, 1, 1, 3, 1, 1), snapshot3.Taken);
}
