public void CancelsPreviouslyStartedAutomaticFlushToPreventPreventPrematureTransmission()
{
var serializer = new StubTelemetrySerializer();
var buffer = new TelemetryBuffer(serializer, new StubApplicationLifecycle());
buffer.MaxTransmissionDelay = TimeSpan.FromMilliseconds(1);
buffer.Process(new StubTelemetry());
buffer.MaxTransmissionDelay = TimeSpan.FromMilliseconds(100);
buffer.FlushAsync().Wait();
var autoFlushed = new ManualResetEventSlim();
serializer.OnSerialize = telemetry =>
{
autoFlushed.Set();
};
buffer.Process(new StubTelemetry());
Assert.False(autoFlushed.Wait(30));
}
public void FlushesBufferWhenNumberOfTelemetryItemsReachesMax()
{
var bufferFlushed = new ManualResetEventSlim();
IEnumerable<ITelemetry> flushedTelemetry = null;
var serializer = new StubTelemetrySerializer
{
OnSerialize = telemetry =>
{
flushedTelemetry = telemetry.ToList();
bufferFlushed.Set();
},
};
var telemetryBuffer = new TelemetryBuffer(serializer, new StubApplicationLifecycle());
var sentTelemetry = new List<ITelemetry> { new StubTelemetry(), new StubTelemetry() };
telemetryBuffer.Capacity = sentTelemetry.Count;
foreach (ITelemetry item in sentTelemetry)
{
telemetryBuffer.Process(item);
}
Assert.True(bufferFlushed.Wait(30));
Assert.Equal(sentTelemetry, flushedTelemetry);
}
public void StartsTimerThatFlushesBufferAfterMaxTransmissionDelay()
{
var telemetrySerialized = new ManualResetEventSlim();
var serializer = new StubTelemetrySerializer();
serializer.OnSerialize = telemetry =>
{
telemetrySerialized.Set();
};
var buffer = new TelemetryBuffer(serializer, new StubApplicationLifecycle());
buffer.MaxTransmissionDelay = TimeSpan.FromMilliseconds(1);
buffer.Process(new StubTelemetry());
Assert.True(telemetrySerialized.Wait(50));
}
public void DoesNotCancelPreviousFlush()
{
var telemetrySerialized = new ManualResetEventSlim();
var serializer = new StubTelemetrySerializer();
serializer.OnSerialize = telemetry =>
{
telemetrySerialized.Set();
};
var buffer = new TelemetryBuffer(serializer, new StubApplicationLifecycle());
buffer.MaxTransmissionDelay = TimeSpan.FromMilliseconds(1);
buffer.Process(new StubTelemetry());
buffer.MaxTransmissionDelay = TimeSpan.FromSeconds(42);
buffer.Process(new StubTelemetry());
Assert.True(telemetrySerialized.Wait(TimeSpan.FromMilliseconds(100)));
}
public void FlushesBufferToPreventLossOfTelemetry()
{
var applicationLifecycle = new StubApplicationLifecycle();
var telemetrySerialized = new ManualResetEventSlim();
var serializer = new StubTelemetrySerializer();
serializer.OnSerialize = telemetry =>
{
telemetrySerialized.Set();
};
var buffer = new TelemetryBuffer(serializer, applicationLifecycle);
buffer.Process(new StubTelemetry());
applicationLifecycle.OnStopping(ApplicationStoppingEventArgs.Empty);
Assert.True(telemetrySerialized.Wait(50));
}
public void SerializesTelemetryIfBufferIsNotEmpty()
{
List<ITelemetry> serializedTelemetry = null;
var serializer = new StubTelemetrySerializer();
serializer.OnSerialize = telemetry =>
{
serializedTelemetry = new List<ITelemetry>(telemetry);
};
var telemetryBuffer = new TelemetryBuffer(serializer, new StubApplicationLifecycle());
var expectedTelemetry = new StubTelemetry();
telemetryBuffer.Process(expectedTelemetry);
telemetryBuffer.FlushAsync().GetAwaiter().GetResult();
Assert.Same(expectedTelemetry, serializedTelemetry.Single());
}
public void SerializesBufferOnThreadPoolToFreeUpCustomersThread()
{
int serializerThreadId = -1;
var serializerInvoked = new ManualResetEventSlim();
var serializer = new StubTelemetrySerializer();
serializer.OnSerialize = telemetry =>
{
serializerThreadId = Thread.CurrentThread.ManagedThreadId;
serializerInvoked.Set();
};
var telemetryBuffer = new TelemetryBuffer(serializer, new StubApplicationLifecycle());
telemetryBuffer.Process(new StubTelemetry());
Task dontWait = telemetryBuffer.FlushAsync();
Assert.True(serializerInvoked.Wait(100));
Assert.NotEqual(serializerThreadId, Thread.CurrentThread.ManagedThreadId);
}
public void DoesntSerializeTelemetryIfBufferIsEmpty()
{
bool telemetrySerialized = false;
var serializer = new StubTelemetrySerializer();
serializer.OnSerialize = telemetry =>
{
telemetrySerialized = true;
};
var telemetryBuffer = new TelemetryBuffer(serializer, new StubApplicationLifecycle());
telemetryBuffer.FlushAsync().GetAwaiter().GetResult();
Assert.False(telemetrySerialized);
}
