add test for invalid sendonly usage

Author: timbussmann

src/ServiceBus.AcceptanceTests/When_receiving_with_sendonly.cs

@@ -0,0 +1,43 @@
+namespace ServiceBus.Tests
+{
+    using System;
+    using NServiceBus.AcceptanceTesting;
+    using NServiceBus;
+    using NUnit.Framework;
+    using System.Threading.Tasks;
+
+    public class When_receiving_with_sendonly
+    {
+        [TestCase(TransportTransactionMode.ReceiveOnly)]
+        [TestCase(TransportTransactionMode.SendsAtomicWithReceive)]
+        public void Should_invoke_the_handler_to_process_it(TransportTransactionMode transactionMode)
+        {
+            var exception = Assert.ThrowsAsync<InvalidOperationException>(() => Scenario.Define<ScenarioContext>()
+                .WithComponent(new FunctionWithSendOnlyConfiguration(transactionMode))
+                .Done(c => c.EndpointsStarted)
+                .Run());
+
+            StringAssert.Contains("This endpoint cannot process messages because it is configured in send-only mode.", exception.Message);
+        }
+
+
+        class FunctionWithSendOnlyConfiguration : FunctionEndpointComponent
+        {
+            public FunctionWithSendOnlyConfiguration(TransportTransactionMode transactionMode) : base(transactionMode)
+            {
+                CustomizeConfiguration = configuration => configuration.AdvancedConfiguration.SendOnly();
+
+                Messages.Add(new TestMessage());
+            }
+
+            public class TestMessageHandler : IHandleMessages<TestMessage>
+            {
+                public Task Handle(TestMessage message, IMessageHandlerContext context) => Task.CompletedTask;
+            }
+        }
+
+        class TestMessage : IMessage
+        {
+        }
+    }
+}