lianetm commented on code in PR #16156:
URL: https://github.com/apache/kafka/pull/16156#discussion_r1622679624


##########
clients/src/test/java/org/apache/kafka/clients/consumer/internals/NetworkClientDelegateTest.java:
##########
@@ -140,6 +141,25 @@ public void testEnsureTimerSetOnAdd() {
         assertEquals(REQUEST_TIMEOUT_MS, 
ncd.unsentRequests().poll().timer().timeoutMs());
     }
 
+    @Test
+    public void testHasAnyPendingRequests() throws Exception {
+        try (NetworkClientDelegate networkClientDelegate = 
newNetworkClientDelegate()) {
+            NetworkClientDelegate.UnsentRequest unsentRequest = 
newUnsentFindCoordinatorRequest();
+            networkClientDelegate.add(unsentRequest);
+            // unsent
+            assertTrue(networkClientDelegate.hasAnyPendingRequests());
+            assertFalse(networkClientDelegate.unsentRequests().isEmpty());
+            assertFalse(client.hasInFlightRequests());
+
+            networkClientDelegate.poll(0, time.milliseconds());
+
+            // in-flight
+            assertTrue(networkClientDelegate.hasAnyPendingRequests());
+            assertTrue(networkClientDelegate.unsentRequests().isEmpty());
+            assertTrue(client.hasInFlightRequests());

Review Comment:
   to cover the whole flow, what about extending the test to ensure that when 
we get a response, the `hasAnyPendingRequests` goes false? (there's a 
`prepareFindCoordinatorResponse` that should be handy for it)



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