Fix flaky test

Sometimes waiting 2 seconds is not long enough:

https://ci.rabbitmq.com/teams/main/pipelines/dotnet/jobs/test/builds/240

Author: lukebakken

projects/client/Unit/src/unit/TestAsyncConsumer.cs

@@ -54,7 +54,7 @@ public class TestAsyncConsumer
         [Test]
         public void TestBasicRoundtrip()
         {
-            var cf = new ConnectionFactory{ DispatchConsumersAsync = true };
+            var cf = new ConnectionFactory { DispatchConsumersAsync = true };
             using(IConnection c = cf.CreateConnection())
             using(IModel m = c.CreateModel())
             {
@@ -84,7 +84,7 @@ public void TestBasicRoundtrip()
         [Test]
         public void TestBasicRoundtripNoWait()
         {
-            var cf = new ConnectionFactory{ DispatchConsumersAsync = true };
+            var cf = new ConnectionFactory { DispatchConsumersAsync = true };
             using (IConnection c = cf.CreateConnection())
             {
                 using (IModel m = c.CreateModel())
@@ -102,12 +102,13 @@ public void TestBasicRoundtripNoWait()
                         };
                     string tag = m.BasicConsume(q.QueueName, true, consumer);
                     // ensure we get a delivery
-                    bool waitRes = are.WaitOne(2000);
+                    bool waitRes = are.WaitOne(5000);
                     Assert.IsTrue(waitRes);
                     // unsubscribe and ensure no further deliveries
                     m.BasicCancelNoWait(tag);
+                    Thread.Sleep(1000);
                     m.BasicPublish("", q.QueueName, bp, body);
-                    bool waitResFalse = are.WaitOne(2000);
+                    bool waitResFalse = are.WaitOne(5000);
                     Assert.IsFalse(waitResFalse);
                 }
             }