Adding logging messages to troubleshoot failing test.

Author: stebet

projects/Test/Integration/TestActivitySource.cs

@@ -34,6 +34,7 @@
 using System.Diagnostics;
 using System.Linq;
 using System.Text;
+using System.Text.Json;
 using System.Threading.Tasks;
 
 using RabbitMQ.Client;
@@ -205,6 +206,7 @@ private void AssertActivityData(bool useRoutingKeyAsOperationName, string queueN
             string childName = isDeliver ? "deliver" : "receive";
             Activity[] activities = activityList.ToArray();
             Assert.NotEmpty(activities);
+            _output.WriteLine(JsonSerializer.Serialize(activities, new JsonSerializerOptions { WriteIndented = true }));
             Activity sendActivity = activities.First(x =>
                 x.OperationName == (useRoutingKeyAsOperationName ? $"{queueName} publish" : "publish") &&
                 x.GetTagItem(RabbitMQActivitySource.MessagingDestinationRoutingKey) is string routingKeyTag &&