Yunyung commented on code in PR #20108:
URL: https://github.com/apache/kafka/pull/20108#discussion_r2188485247


##########
test-common/test-common-runtime/src/main/java/org/apache/kafka/common/test/ClusterInstance.java:
##########
@@ -288,6 +331,14 @@ default void deleteTopic(String topicName) throws 
InterruptedException {
     void waitForReadyBrokers() throws InterruptedException;
 
     default void waitForTopic(String topic, int partitions) throws 
InterruptedException {
+        if (partitions < 0) {
+            throw new IllegalArgumentException("Partition count must be >= 0, 
but was " + partitions);
+        }
+
+        else if(partitions == 0){
+            waitTopicDeletion(topic);
+        }
+
         // wait for metadata
         Collection<KafkaBroker> brokers = aliveBrokers().values();
         TestUtils.waitForCondition(

Review Comment:
   partitions == 0 is used to check whether it's waiting for deletion, but that 
logic has now been moved to waitTopicDeletion. Please update the code 
accordingly. The similar logic "wait for metadata" needs to also apply to 
waitTopicDeletion.



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