1 files changed, 17 insertions, 0 deletions
diff --git a/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/TopicServerTest.java b/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/TopicServerTest.java
index 6e176423e..11a5e3f81 100644
--- a/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/TopicServerTest.java
+++ b/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/TopicServerTest.java
@@ -85,6 +85,23 @@ public class TopicServerTest {
         verify(sink, never()).send(any());
     }
 
+    /**
+     * Tests onTopicEvent() when there is no response.
+     */
+    @Test
+    public void testOnTopicEventNoResponse() {
+        server = new MyServer() {
+            @Override
+            protected String process(MyRequest request) {
+                return null;
+            }
+        };
+
+        server.onTopicEvent(CommInfrastructure.NOOP, MY_TOPIC, "{\"text\": \"bye-bye\"}");
+
+        verify(sink, never()).send(any());
+    }
+
 
     private class MyRequest {
         private String text;