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 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_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 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 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 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());
}
}
