public void QuickPulseTopCpuCollectorReturnsNothingIfInitializationFailed()
{
// ARRANGE
var processProvider = new QuickPulseProcessProviderMock {
AlwaysThrow = new Exception()
};
processProvider.Processes = new List <QuickPulseProcess>()
{
new QuickPulseProcess("Process1", TimeSpan.FromSeconds(1))
};
var timeProvider = new ClockMock();
var collector = new QuickPulseTopCpuCollector(timeProvider, processProvider);
// ACT
collector.Initialize();
collector.GetTopProcessesByCpu(5);
timeProvider.FastForward(TimeSpan.FromSeconds(1));
var result = collector.GetTopProcessesByCpu(5);
// ASSERT
Assert.IsTrue(collector.InitializationFailed);
Assert.IsFalse(result.Any());
}
public void QuickPulseTopCpuCollectorCleansUpStateWhenProcessesGoAway()
{
// ARRANGE
var processProvider = new QuickPulseProcessProviderMock();
var baseProcessorTime = TimeSpan.FromSeconds(100);
processProvider.Processes = new List <QuickPulseProcess>()
{
new QuickPulseProcess("Process1", baseProcessorTime),
new QuickPulseProcess("Process2", baseProcessorTime),
new QuickPulseProcess("Process3", baseProcessorTime),
new QuickPulseProcess("Process4", baseProcessorTime),
new QuickPulseProcess("Process5", baseProcessorTime),
};
var timeProvider = new ClockMock();
var collector = new QuickPulseTopCpuCollector(timeProvider, processProvider);
// ACT
collector.GetTopProcessesByCpu(3);
int itemCount1 = collector.ProcessObservations.Count;
timeProvider.FastForward(TimeSpan.FromSeconds(1));
processProvider.Processes = new List <QuickPulseProcess>()
{
new QuickPulseProcess("Process1", baseProcessorTime)
};
collector.GetTopProcessesByCpu(3);
int itemCount3 = collector.ProcessObservations.Count;
// ASSERT
Assert.AreEqual(5, itemCount1);
Assert.AreEqual(1, itemCount3);
}
public void QuickPulseTopCpuCollectorReturnsTopProcessesByCpuWhenTotalTimeIsAvailable()
{
// ARRANGE
TimeSpan interval = TimeSpan.FromSeconds(2);
var processProvider = new QuickPulseProcessProviderMock();
var baseProcessorTime = TimeSpan.FromSeconds(100);
processProvider.Processes = new List <QuickPulseProcess>()
{
new QuickPulseProcess("Process1", baseProcessorTime),
new QuickPulseProcess("Process2", baseProcessorTime),
new QuickPulseProcess("Process3", baseProcessorTime),
new QuickPulseProcess("Process4", baseProcessorTime),
new QuickPulseProcess("Process5", baseProcessorTime)
};
var timeProvider = new ClockMock();
var collector = new QuickPulseTopCpuCollector(timeProvider, processProvider);
// ACT
// doesn't matter, some large value
processProvider.OverallTimeValue = TimeSpan.FromTicks(1000 * baseProcessorTime.Ticks);
collector.GetTopProcessesByCpu(3);
timeProvider.FastForward(interval);
processProvider.Processes = new List <QuickPulseProcess>()
{
new QuickPulseProcess("Process1", baseProcessorTime + TimeSpan.FromMilliseconds(50)),
new QuickPulseProcess("Process2", baseProcessorTime + TimeSpan.FromMilliseconds(100)),
new QuickPulseProcess("Process3", baseProcessorTime + TimeSpan.FromMilliseconds(75)),
new QuickPulseProcess("Process4", baseProcessorTime + TimeSpan.FromMilliseconds(25)),
new QuickPulseProcess("Process5", baseProcessorTime + TimeSpan.FromMilliseconds(125))
};
processProvider.OverallTimeValue += TimeSpan.FromTicks(Environment.ProcessorCount * interval.Ticks);
var topProcesses = collector.GetTopProcessesByCpu(3).ToList();
// ASSERT
Assert.AreEqual(3, topProcesses.Count);
Assert.AreEqual("Process5", topProcesses[0].Item1);
Assert.AreEqual((int)((125.0 / (Environment.ProcessorCount * interval.TotalMilliseconds)) * 100), topProcesses[0].Item2);
Assert.AreEqual("Process2", topProcesses[1].Item1);
Assert.AreEqual((int)((100.0 / (Environment.ProcessorCount * interval.TotalMilliseconds)) * 100), topProcesses[1].Item2);
Assert.AreEqual("Process3", topProcesses[2].Item1);
Assert.AreEqual((int)((75.0 / (Environment.ProcessorCount * interval.TotalMilliseconds)) * 100), topProcesses[2].Item2);
}
public void QuickPulseTopCpuCollectorHandlesExceptionFromProcessProvider()
{
// ARRANGE
var processProvider = new QuickPulseProcessProviderMock()
{
AlwaysThrow = new Exception()
};
var timeProvider = new ClockMock();
var collector = new QuickPulseTopCpuCollector(timeProvider, processProvider);
// ACT
var topProcesses = collector.GetTopProcessesByCpu(3);
// ASSERT
Assert.AreEqual(0, topProcesses.Count());
}
public void QuickPulseTopCpuCollectorRetriesAfterIntervalWhenAccessDenied()
{
// ARRANGE
var processProvider = new QuickPulseProcessProviderMock();
processProvider.Processes = new List <QuickPulseProcess>()
{
new QuickPulseProcess("Process1", TimeSpan.FromSeconds(1))
};
var timeProvider = new ClockMock();
var collector = new QuickPulseTopCpuCollector(timeProvider, processProvider);
// ACT
collector.Initialize();
collector.GetTopProcessesByCpu(5);
timeProvider.FastForward(TimeSpan.FromSeconds(1));
var resultWhenEverythingIsFine = collector.GetTopProcessesByCpu(5);
timeProvider.FastForward(TimeSpan.FromSeconds(1));
processProvider.AlwaysThrow = new UnauthorizedAccessException();
var resultWhileAccessDenied = collector.GetTopProcessesByCpu(5);
bool flagWhileAccessDenied = collector.AccessDenied;
// 60 second retry interval
timeProvider.FastForward(TimeSpan.FromSeconds(59));
processProvider.AlwaysThrow = null;
var resultWhenEverythingIsFineAgainButNotEnoughTimePassedToRetry = collector.GetTopProcessesByCpu(5);
bool flagWhenAccessIsOkButNotEnoughTimePassed = collector.AccessDenied;
timeProvider.FastForward(TimeSpan.FromSeconds(1));
processProvider.AlwaysThrow = null;
var resultWhenRetryIntervalHasPassed = collector.GetTopProcessesByCpu(5);
bool flagWhenRetryIntervalHasPassed = collector.AccessDenied;
timeProvider.FastForward(TimeSpan.FromSeconds(1));
processProvider.AlwaysThrow = null;
var resultWhenEverythingIsBackToNormalForGood = collector.GetTopProcessesByCpu(5);
bool flagWhenEverythingIsBackToNormalForGood = collector.AccessDenied;
// ASSERT
Assert.IsTrue(resultWhenEverythingIsFine.Any());
Assert.IsFalse(resultWhileAccessDenied.Any());
Assert.IsTrue(flagWhileAccessDenied);
Assert.IsFalse(resultWhenEverythingIsFineAgainButNotEnoughTimePassedToRetry.Any());
Assert.IsTrue(flagWhenAccessIsOkButNotEnoughTimePassed);
Assert.IsTrue(resultWhenRetryIntervalHasPassed.Any());
Assert.IsFalse(flagWhenRetryIntervalHasPassed);
Assert.IsTrue(resultWhenEverythingIsBackToNormalForGood.Any());
Assert.IsFalse(flagWhenEverythingIsBackToNormalForGood);
}
public void QuickPulseTopCpuCollectorReturnsNothingWhenCalledForTheFirstTime()
{
// ARRANGE
var processProvider = new QuickPulseProcessProviderMock();
processProvider.Processes = new List <QuickPulseProcess>()
{
new QuickPulseProcess("Process1", TimeSpan.FromSeconds(50)),
new QuickPulseProcess("Process2", TimeSpan.FromSeconds(100)),
new QuickPulseProcess("Process3", TimeSpan.FromSeconds(75)),
new QuickPulseProcess("Process4", TimeSpan.FromSeconds(25)),
new QuickPulseProcess("Process5", TimeSpan.FromSeconds(125)),
};
var timeProvider = new ClockMock();
var collector = new QuickPulseTopCpuCollector(timeProvider, processProvider);
// ACT
var topProcesses = collector.GetTopProcessesByCpu(3).ToList();
// ASSERT
Assert.AreEqual(0, topProcesses.Count);
}
