ExpectMsgAsync (#5932)

Co-authored-by: Aaron Stannard <[email protected]>

Author: eaba

src/core/Akka.Cluster.Tests/Routing/ClusterRouterAsk1343BugFixSpec.cs

@@ -68,15 +68,15 @@ public ClusterRouterAsk1343BugFixSpec()
         {
         }
 
-        
+
         [Fact]
         public async Task Should_Ask_Clustered_Pool_Router_and_forward_ask_to_routee()
         {
             var router = Sys.ActorOf(EchoActor.Props(this, true).WithRouter(FromConfig.Instance), "router1");
             Assert.IsType<RoutedActorRef>(router);
 
             var result = await router.Ask<string>("foo");
-            ExpectMsg<string>().ShouldBe(result);
+            (await ExpectMsgAsync<string>()).ShouldBe(result);
         }
 
         [Fact]
@@ -87,7 +87,7 @@ public async Task Should_Ask_Clustered_Group_Router_and_forward_ask_to_routee()
             Assert.IsType<RoutedActorRef>(router);
 
             var result = await router.Ask<string>("foo");
-            ExpectMsg<string>().ShouldBe(result);
+            (await ExpectMsgAsync<string>()).ShouldBe(result);
         }
 
         [Fact]