public void Constructor_AllParametersAreSet_ObjectIsInstantiated()
{
// Arrange
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
// Act
var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object);
// Assert
Assert.IsNotNull(messageQueueFeeder);
}
public void Dispose_ServiceIsStopped()
{
// Arrange
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object);
var messageQueueFeederTask = new Task(messageQueueFeeder.Start);
messageQueueFeederTask.Start();
Thread.Sleep(500);
// Act
messageQueueFeeder.Dispose();
Task.WaitAll(messageQueueFeederTask);
// Assert
Assert.AreEqual(ServiceStatus.Stopped, messageQueueFeeder.GetStatus());
}
public void RunFor10Seconds_SendFailsForAllItems_DispatcherStopsOnlyIfTheQueueIsEmptyAndAllRetryAttempsHaveFailed()
{
// Arrange
int runtimeInMilliseconds = 10 * 1000;
int itemsReturnedFromSystemInformationProvider = 0;
int attemptsToSend = 0;
// prepare system information provider
var provider = new Mock<ISystemInformationProvider>();
provider.Setup(p => p.GetSystemInfo()).Returns(() =>
{
itemsReturnedFromSystemInformationProvider++;
return new SystemInformation { MachineName = Environment.MachineName, Timestamp = DateTime.UtcNow };
});
// prepare sender
var sender = new Mock<ISystemInformationSender>();
sender.Setup(s => s.Send(It.IsAny<SystemInformation>())).Callback(() => { attemptsToSend++; }).Throws(new SendSystemInformationFailedException("Send failed.", null));
IMessageQueue<SystemInformation> workQueue = new SystemInformationMessageQueue();
IMessageQueue<SystemInformation> errorQueue = new SystemInformationMessageQueue();
IMessageQueueProvider<SystemInformation> messageQueueProvider = new SystemInformationMessageQueueProvider(workQueue, errorQueue);
IMessageQueueFeeder messageQueueFeeder = new SystemInformationMessageQueueFeeder(provider.Object, workQueue);
IMessageQueueWorker messageQueueWorker = new SystemInformationMessageQueueWorker(sender.Object, workQueue, errorQueue);
var agentCoordinationService = new Mock<IAgentCoordinationService>();
var agentCoordinationServiceFactory = new Mock<IAgentCoordinationServiceFactory>();
agentCoordinationServiceFactory.Setup(f => f.GetAgentCoordinationService(It.IsAny<Action>(), It.IsAny<Action>())).Returns(
agentCoordinationService.Object);
var messageQueueFeederFactory = new Mock<IMessageQueueFeederFactory>();
messageQueueFeederFactory.Setup(f => f.GetMessageQueueFeeder()).Returns(messageQueueFeeder);
var messageQueueWorkerFactory = new Mock<IMessageQueueWorkerFactory>();
messageQueueWorkerFactory.Setup(f => f.GetMessageQueueWorker()).Returns(messageQueueWorker);
IMessageQueuePersistence<SystemInformation> messageQueuePersistence =
new JSONSystemInformationMessageQueuePersistence(this.jsonMessageQueuePersistenceConfigurationProvider, this.encodingProvider);
var systemInformationDispatchingService = new SystemInformationDispatchingService(
agentCoordinationServiceFactory.Object,
messageQueueFeederFactory.Object,
messageQueueWorkerFactory.Object,
messageQueueProvider,
messageQueuePersistence);
// Act
var stopwatch = new Stopwatch();
stopwatch.Start();
var dispatcher = new Task(systemInformationDispatchingService.Start);
dispatcher.Start();
Thread.Sleep(runtimeInMilliseconds);
systemInformationDispatchingService.Stop();
Task.WaitAll(new[] { dispatcher });
stopwatch.Stop();
// Assert
int queueSize = workQueue.GetSize();
Console.WriteLine(
"After a runtime of {0} milliseconds the dispatcher has been stopped with {1} items in queue. It took {2} milliseconds until the queue worker stopped sending out all queue items (Attempts To Send: {3}).",
runtimeInMilliseconds,
itemsReturnedFromSystemInformationProvider,
stopwatch.ElapsedMilliseconds,
attemptsToSend);
Assert.AreEqual(0, queueSize);
}
public void GetStatus_ServiceIsNotStarted_ResultIs_Stopped()
{
// Arrange
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object);
// Act
var result = messageQueueFeeder.GetStatus();
// Assert
Assert.AreEqual(ServiceStatus.Stopped, result);
}
public void Stop_ServiceIsStopped_StatusIsNotChanged()
{
// Arrange
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object);
var messageQueueFeederTask = new Task(messageQueueFeeder.Start);
messageQueueFeederTask.Start();
messageQueueFeeder.Stop();
var statusBeforeStop = messageQueueFeeder.GetStatus();
// Act
messageQueueFeeder.Stop();
var statusAfterStop = messageQueueFeeder.GetStatus();
// Assert
Assert.AreEqual(statusBeforeStop, statusAfterStop);
}
public void Start_SystemInformationProviderReturnsSystemInformation_SystemInformationIsAddedToQueue()
{
// Arrange
int durationInMilliseconds = SystemInformationMessageQueueFeeder.SendIntervalInMilliseconds * 2;
var systemInformationProvider = new Mock<ISystemInformationProvider>();
systemInformationProvider.Setup(s => s.GetSystemInfo()).Returns(() => new SystemInformation { MachineName = Environment.MachineName, Timestamp = DateTime.UtcNow });
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
using (var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object))
{
// Act
var feederTask = new Task(messageQueueFeeder.Start);
feederTask.Start();
Task.WaitAll(new[] { feederTask }, durationInMilliseconds);
messageQueueFeeder.Stop();
// Assert
workQueue.Verify(s => s.Enqueue(It.IsAny<SystemInformationQueueItem>()), Times.AtLeastOnce());
}
}
public void Stop_EndsARunningService()
{
// Arrange
int durationInMilliseconds = SystemInformationMessageQueueFeeder.SendIntervalInMilliseconds * 3;
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object);
var messageQueueFeederTask = new Task(messageQueueFeeder.Start);
messageQueueFeederTask.Start();
// Act
Thread.Sleep(durationInMilliseconds);
messageQueueFeeder.Stop();
// Assert
Assert.AreEqual(ServiceStatus.Stopped, messageQueueFeeder.GetStatus());
}
public void Start_RunFor3Intervals_SystemInfoIsPulledAtMostThreeTimes()
{
// Arrange
int durationInMilliseconds = SystemInformationMessageQueueFeeder.SendIntervalInMilliseconds * 3;
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
using (var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object))
{
// Act
var feederTask = new Task(messageQueueFeeder.Start);
feederTask.Start();
Task.WaitAll(new[] { feederTask }, durationInMilliseconds);
messageQueueFeeder.Stop();
// Assert
systemInformationProvider.Verify(s => s.GetSystemInfo(), Times.AtMost(3));
}
}
public void Start_SystemInformationProviderReturnsNull_InfoIsNotQueued()
{
// Arrange
int durationInMilliseconds = SystemInformationMessageQueueFeeder.SendIntervalInMilliseconds * 2;
var systemInformationProvider = new Mock<ISystemInformationProvider>();
SystemInformation systemInformation = null;
systemInformationProvider.Setup(s => s.GetSystemInfo()).Returns(systemInformation);
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
using (var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object))
{
// Act
var feederTaks = new Task(messageQueueFeeder.Start);
feederTaks.Start();
Task.WaitAll(new[] { feederTaks }, durationInMilliseconds);
messageQueueFeeder.Stop();
// Assert
workQueue.Verify(s => s.Enqueue(It.IsAny<SystemInformationQueueItem>()), Times.Never());
}
}
public void Resume_ServiceIsStopped_StatusIsStillStopped()
{
// Arrange
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
using (var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object))
{
var messageQueueFeederTask = new Task(messageQueueFeeder.Start);
messageQueueFeederTask.Start();
messageQueueFeeder.Stop();
// Act
messageQueueFeeder.Resume();
// Assert
Assert.AreEqual(ServiceStatus.Stopped, messageQueueFeeder.GetStatus());
}
}
public void Resume_ServiceIsRunning_StatusIsNotChanged()
{
// Arrange
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
using (var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object))
{
var messageQueueFeederTask = new Task(messageQueueFeeder.Start);
messageQueueFeederTask.Start();
var statusBeforeResume = messageQueueFeeder.GetStatus();
// Act
messageQueueFeeder.Resume();
var statusAfterResume = messageQueueFeeder.GetStatus();
// Assert
Assert.AreEqual(statusBeforeResume, statusAfterResume);
}
}
public void Resume_ServiceIsPaused_StatusIsChangedToRunning()
{
// Arrange
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
using (var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object))
{
var messageQueueFeederTask = new Task(messageQueueFeeder.Start);
messageQueueFeederTask.Start();
Thread.Sleep(500);
messageQueueFeeder.Pause();
// Act
Thread.Sleep(500);
messageQueueFeeder.Resume();
// Assert
Assert.AreEqual(ServiceStatus.Running, messageQueueFeeder.GetStatus());
}
}
public void Pause_ServiceIsRunning_StatusIsChangedToPaused()
{
// Arrange
int durationInMilliseconds = SystemInformationMessageQueueFeeder.SendIntervalInMilliseconds * 3;
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
using (var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object))
{
var messageQueueFeederTask = new Task(messageQueueFeeder.Start);
messageQueueFeederTask.Start();
Thread.Sleep(durationInMilliseconds);
// Act
messageQueueFeeder.Pause();
var statusAfterPause = messageQueueFeeder.GetStatus();
// Assert
Assert.AreEqual(ServiceStatus.Paused, statusAfterPause);
}
}
public void GetStatus_ServiceIsStarted_ResultIs_Running()
{
// Arrange
var systemInformationProvider = new Mock<ISystemInformationProvider>();
var workQueue = new Mock<IMessageQueue<SystemInformation>>();
var messageQueueFeeder = new SystemInformationMessageQueueFeeder(systemInformationProvider.Object, workQueue.Object);
var messageQueueFeederTask = new Task(messageQueueFeeder.Start);
messageQueueFeederTask.Start();
Thread.Sleep(3000);
// Act
var result = messageQueueFeeder.GetStatus();
// Assert
Assert.AreEqual(ServiceStatus.Running, result);
}
