public async Task GetMetrics_ReturnsExpectedResult()
{
var queuesOptions = new QueuesOptions();
Mock <ITriggerExecutor <QueueMessage> > mockTriggerExecutor = new Mock <ITriggerExecutor <QueueMessage> >(MockBehavior.Strict);
var queueProcessorFactory = new DefaultQueueProcessorFactory();
var queueProcessor = QueueListenerFactory.CreateQueueProcessor(Fixture.Queue, null, _loggerFactory, queueProcessorFactory, queuesOptions, null);
QueueListener listener = new QueueListener(Fixture.Queue, null, mockTriggerExecutor.Object, new WebJobsExceptionHandler(null),
_loggerFactory, null, queuesOptions, queueProcessor, new FunctionDescriptor {
Id = "TestFunction"
});
var metrics = await listener.GetMetricsAsync();
Assert.AreEqual(0, metrics.QueueLength);
Assert.AreEqual(TimeSpan.Zero, metrics.QueueTime);
Assert.AreNotEqual(default(DateTime), metrics.Timestamp);
// add some test messages
for (int i = 0; i < 5; i++)
{
await Fixture.Queue.SendMessageAsync($"Message {i}");
}
await Task.Delay(TimeSpan.FromSeconds(5));
metrics = await listener.GetMetricsAsync();
Assert.AreEqual(5, metrics.QueueLength);
Assert.True(metrics.QueueTime.Ticks > 0);
Assert.AreNotEqual(default(DateTime), metrics.Timestamp);
// verify non-generic interface works as expected
metrics = (QueueTriggerMetrics)(await((IScaleMonitor)listener).GetMetricsAsync());
Assert.AreEqual(5, metrics.QueueLength);
}