lianetm commented on code in PR #16140:
URL: https://github.com/apache/kafka/pull/16140#discussion_r1630075479


##########
clients/src/test/java/org/apache/kafka/clients/consumer/internals/ConsumerNetworkThreadTest.java:
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@@ -341,6 +309,24 @@ void testRunOnceInvokesReaper() {
 
     @Test
     void testSendUnsentRequest() {
+        NetworkClientDelegate networkClientDelegate = new 
NetworkClientDelegate(

Review Comment:
   This could all be greatly simplified. What about something like:
   
           ```
   
when(networkClientDelegate.hasAnyPendingRequests()).thenReturn(true).thenReturn(true).thenReturn(false);
           consumerNetworkThread.cleanup();
           verify(networkClientDelegate, times(2)).poll(anyLong(), anyLong());
   ```
   
   The responsibility of the component is only to poll the network client as 
long as there are pending requests, so with the above we verify that (no need 
to get into creating an actual network client and assert on it, etc). Makes 
sense?



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