eat There is no currently active test (#770)

tests/KubernetesClient.Tests/Logging/TestOutputLogger.cs

@@ -84,6 +84,8 @@ namespace k8s.Tests.Logging
                 throw new ArgumentNullException(nameof(formatter));
             }
 
+            try
+            {
                 TestOutput.WriteLine(string.Format(
                     "[{0}] {1}: {2}",
                     level,
@@ -96,6 +98,20 @@ namespace k8s.Tests.Logging
                         exception.ToString());
                 }
             }
+            catch (AggregateException e)
+            {
+                // ignore 'There is no currently active test.'
+                foreach (var inner in e.InnerExceptions)
+                {
+                    if (inner.Message.Contains("There is no currently active test"))
+                    {
+                        return;
+                    }
+                }
+
+                throw;
+            }
+        }
 
         /// <summary>
         ///     Check if the given <paramref name="logLevel"/> is enabled.