public void QuickPulseTelemetryModuleManagesTimersCorrectly()
{
if (QuickPulseTelemetryModuleTests.Ignored)
{
return;
}
// ARRANGE
var pollingInterval = TimeSpan.FromSeconds(1);
var collectionInterval = TimeSpan.FromMilliseconds(400);
var timings = new QuickPulseTimings(pollingInterval, collectionInterval);
var collectionTimeSlotManager = new QuickPulseCollectionTimeSlotManagerMock(timings);
var serviceClient = new QuickPulseServiceClientMock {
ReturnValueFromPing = false, ReturnValueFromSubmitSample = true
};
var performanceCollector = new PerformanceCollectorMock();
var topCpuCollector = new QuickPulseTopCpuCollectorMock();
var module = new QuickPulseTelemetryModule(collectionTimeSlotManager, null, serviceClient, performanceCollector, topCpuCollector, timings);
// ACT & ASSERT
module.Initialize(new TelemetryConfiguration()
{
InstrumentationKey = "some ikey"
});
// initially, the module is in the polling state
Thread.Sleep((int)(2.5 * pollingInterval.TotalMilliseconds));
serviceClient.CountersEnabled = false;
// 2.5 polling intervals have elapsed, we must have pinged the service 3 times (the first time immediately upon initialization), but no samples yet
Assert.AreEqual(3, serviceClient.PingCount, "Ping count 1");
Assert.AreEqual(0, serviceClient.SnappedSamples.Count, "Sample count 1");
// now the service wants the data
serviceClient.Reset();
serviceClient.ReturnValueFromPing = true;
serviceClient.ReturnValueFromSubmitSample = true;
serviceClient.CountersEnabled = true;
Thread.Sleep((int)(5 * collectionInterval.TotalMilliseconds));
serviceClient.CountersEnabled = false;
// a number of collection intervals have elapsed, we must have pinged the service once, and then started sending samples
Assert.AreEqual(1, serviceClient.PingCount, "Ping count 2");
Assert.IsTrue(serviceClient.SnappedSamples.Count > 0, "Sample count 2");
lock (serviceClient.ResponseLock)
{
// the service doesn't want the data anymore
serviceClient.ReturnValueFromPing = false;
serviceClient.ReturnValueFromSubmitSample = false;
serviceClient.Reset();
serviceClient.CountersEnabled = true;
}
Thread.Sleep((int)(2.9 * pollingInterval.TotalMilliseconds));
serviceClient.CountersEnabled = false;
// 2 polling intervals have elapsed, we must have submitted one batch of samples, stopped collecting and pinged the service twice afterwards
Assert.AreEqual(1, serviceClient.SnappedSamples.Count / serviceClient.LastSampleBatchSize, "Sample count 3");
Assert.AreEqual(2, serviceClient.PingCount, "Ping count 3");
}
