public void ExecuteEvictionStopsIfNumBytesInCacheFallsBelowLowerBoundBetweenTwoBeacons()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 2000L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
mockBeaconCache.NumBytesInCache.Returns(configuration.CacheSizeUpperBound + 1, //should run method
configuration.CacheSizeUpperBound, // first iteration
configuration.CacheSizeUpperBound, // first iteration
configuration.CacheSizeUpperBound, // first iteration
(configuration.CacheSizeUpperBound + configuration.CacheSizeLowerBound) / 2, // second iteration
(configuration.CacheSizeUpperBound + configuration.CacheSizeLowerBound) / 2, // second iteration
configuration.CacheSizeLowerBound, // stops already (second iteration)
0L); // just for safety
mockBeaconCache.BeaconIDs.Returns(new HashSet <int> {
42, 1
});
// when executing
target.Execute();
// then
var tmp = mockBeaconCache.Received(8).NumBytesInCache;
mockBeaconCache.Received(3).EvictRecordsByNumber(Arg.Any <int>(), 1);
}
public void ExecuteEvictionRunsUntilTheCacheSizeIsLessThanOrEqualToLowerBound()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 2000L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
mockBeaconCache.NumBytesInCache.Returns(configuration.CacheSizeUpperBound + 1, //should run method
configuration.CacheSizeUpperBound, // first iteration
configuration.CacheSizeUpperBound, // first iteration
configuration.CacheSizeUpperBound, // first iteration
(configuration.CacheSizeUpperBound + configuration.CacheSizeLowerBound) / 2, // second iteration
(configuration.CacheSizeUpperBound + configuration.CacheSizeLowerBound) / 2, // second iteration
(configuration.CacheSizeUpperBound + configuration.CacheSizeLowerBound) / 2, // second iteration
configuration.CacheSizeLowerBound, // stops already
0L); // just for safety
mockBeaconCache.BeaconIDs.Returns(new HashSet <int> {
42, 1
});
// when executing the first time
target.Execute();
// then
var tmp = mockBeaconCache.Received(8).NumBytesInCache;
mockBeaconCache.Received(2).EvictRecordsByNumber(1, 1);
mockBeaconCache.Received(2).EvictRecordsByNumber(42, 1);
}
public void ÉxecuteEvictionStopsIfThreadGetsInterruptedBetweenTwoBeacons()
{
// given
var shutdown = false;
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 2000L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, () => shutdown);
mockBeaconCache.NumBytesInCache.Returns(configuration.CacheSizeUpperBound + 1, //should run method
configuration.CacheSizeUpperBound, // first iteration
configuration.CacheSizeUpperBound, // first iteration
configuration.CacheSizeUpperBound, // first iteration
(configuration.CacheSizeUpperBound + configuration.CacheSizeLowerBound) / 2, // second iteration
(configuration.CacheSizeUpperBound + configuration.CacheSizeLowerBound) / 2, // second iteration
(configuration.CacheSizeUpperBound + configuration.CacheSizeLowerBound) / 2, // second iteration
configuration.CacheSizeLowerBound, // stops already
0L); // just for safety
mockBeaconCache.BeaconIDs.Returns(new HashSet <int> {
42, 1
});
mockBeaconCache.EvictRecordsByNumber(Arg.Any <int>(), 1).Returns(x =>
{
shutdown = true;
return(5);
});
// when executing
target.Execute();
// then
var tmp = mockBeaconCache.Received(3).NumBytesInCache;
mockBeaconCache.Received(1).EvictRecordsByNumber(Arg.Any <int>(), 1);
}
public void ExecuteEvictionDoesNotLogEvictionResultIfDebugIsDisabled()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 2000L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
mockBeaconCache.NumBytesInCache.Returns(configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
0L);
mockBeaconCache.BeaconIDs.Returns(new HashSet <int> {
42, 1
});
mockBeaconCache.EvictRecordsByNumber(1, Arg.Any <int>()).Returns(5);
mockBeaconCache.EvictRecordsByNumber(42, Arg.Any <int>()).Returns(1);
mockLogger.IsDebugEnabled.Returns(false);
// when executing the first time
target.Execute();
// then
var tmp = mockLogger.Received(3).IsDebugEnabled;
mockLogger.DidNotReceive().Debug(Arg.Any <string>());
}
public void ExecuteEvictionLogsEvictionResultIfDebugIsEnabled()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 2000L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
mockBeaconCache.NumBytesInCache.Returns(configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
0L);
mockBeaconCache.BeaconIDs.Returns(new HashSet <int> {
42, 1
});
mockBeaconCache.EvictRecordsByNumber(1, Arg.Any <int>()).Returns(5);
mockBeaconCache.EvictRecordsByNumber(42, Arg.Any <int>()).Returns(1);
mockLogger.IsDebugEnabled.Returns(true);
// when executing the first time
target.Execute();
// then
var tmp = mockLogger.Received(3).IsDebugEnabled;
mockLogger.Received(1).Debug("Removed 5 records from Beacon with ID 1");
mockLogger.Received(1).Debug("Removed 1 records from Beacon with ID 42");
}
public void TheStrategyIsDisabledIfCacheSizeUpperBoundIsLessThanLowerBound()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 999L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
// then
Assert.That(target.IsStrategyDisabled, Is.True);
}
public void ShouldRunGivesTrueIfNumBytesInCacheIsGreaterThanUpperBoundLimit()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 2000L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
mockBeaconCache.NumBytesInCache.Returns(configuration.CacheSizeUpperBound + 1);
// then
Assert.That(target.ShouldRun, Is.True);
}
public void ExecuteEvictionDoesNotLogIfStrategyIsDisabledAndInfoIsDisabledInLogger()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, -1L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
mockLogger.IsInfoEnabled.Returns(false);
// when executing the first time
target.Execute();
// then
var tmp = mockLogger.Received(1).IsInfoEnabled;
mockLogger.DidNotReceive().Info(Arg.Any <string>());
// and when executing a second time
target.Execute();
// then
tmp = mockLogger.Received(2).IsInfoEnabled;
mockLogger.DidNotReceive().Info(Arg.Any <string>());
}
public void ExecuteEvictionCallsCacheMethodForEachBeacon()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, 2000L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
mockBeaconCache.NumBytesInCache.Returns(configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
configuration.CacheSizeUpperBound + 1,
0L);
mockBeaconCache.BeaconIDs.Returns(new HashSet <int> {
42, 1
});
// when executing the first time
target.Execute();
// then
var tmp = mockBeaconCache.Received(5).NumBytesInCache;
mockBeaconCache.Received(1).EvictRecordsByNumber(1, 1);
mockBeaconCache.Received(1).EvictRecordsByNumber(42, 1);
}
public void ExecuteEvictionLogsAMessageOnceAndReturnsIfStrategyIsDisabled()
{
// given
var configuration = new BeaconCacheConfiguration(1000L, 1000L, -1L);
var target = new SpaceEvictionStrategy(mockLogger, mockBeaconCache, configuration, isShutdownFunc);
mockLogger.IsInfoEnabled.Returns(true);
// when executing the first time
target.Execute();
// then
var tmp = mockLogger.Received(1).IsInfoEnabled;
mockLogger.Received(1).Info(Arg.Any <string>());
// and when executing a second time
mockLogger.ClearReceivedCalls();
target.Execute();
// then
tmp = mockLogger.DidNotReceive().IsInfoEnabled;
mockLogger.DidNotReceive().Info(Arg.Any <string>());
}