Another fix for test sync

Author: macsux

tests/KubernetesClient.Tests/ResourceEventDeltaBlockTests.cs

@@ -115,12 +115,12 @@ public async Task DistributeWork(string description, ScheduledEvent<TestResource
             var sut = new ResourceEventDeltaBlock<int, TestResource>(x => x.Key, log: _log);
             var testScheduler = new TestScheduler();
             var results = new List<List<ResourceEvent<TestResource>>>();
-            var actionBlock = new ActionBlock<List<ResourceEvent<TestResource>>>(deltas =>
+            var actionBlock = new ActionBlock<List<ResourceEvent<TestResource>>>(async deltas =>
             {
                 _log.LogTrace($"Worker called for {string.Join("", deltas)}");
                 results.Add(deltas);
-                Thread.Sleep(300);
-                testScheduler.Sleep(300);
+                await Task.Delay(300);
+                //testScheduler.Sleep(300);
             }, new ExecutionDataflowBlockOptions() {BoundedCapacity = 1, MaxDegreeOfParallelism = 1});
             sut.LinkTo(actionBlock, new DataflowLinkOptions {PropagateCompletion = true});