[GitHub] [kafka] kowshik commented on a diff in pull request #13272: MINOR: Add missing unit tests for {Local|Remote}LeaderEndpoint classes

["kowshik (via GitHub)" <gi...@apache.org>]

kowshik commented on code in PR #13272:
URL: https://github.com/apache/kafka/pull/13272#discussion_r1110637054


##########
core/src/test/scala/kafka/server/LocalLeaderEndPointTest.scala:
##########
@@ -118,6 +120,46 @@ class LocalLeaderEndPointTest {
     assertEquals((4, 3L), endPoint.fetchEarliestLocalOffset(topicPartition, currentLeaderEpoch = 7))
   }
 
+  @Test
+  def testFetchEpochEndOffsets(): Unit = {
+    appendRecords(replicaManager, topicPartition, records)
+      .onFire(response => assertEquals(Errors.NONE, response.error))
+
+    var result = endPoint.fetchEpochEndOffsets(Map(
+      topicPartition -> new OffsetForLeaderPartition()
+        .setPartition(topicPartition.partition)
+        .setLeaderEpoch(0)))
+
+    var expected = Map(
+      topicPartition -> new EpochEndOffset()
+        .setPartition(topicPartition.partition)
+        .setErrorCode(Errors.NONE.code)
+        .setLeaderEpoch(0)
+        .setEndOffset(3L))
+
+    assertEquals(expected, result)
+
+    // Change leader epoch and end offset, and verify the behavior again.
+    val leaderAndIsrRequest = buildLeaderAndIsrRequest(leaderEpoch = 4)
+    replicaManager.becomeLeaderOrFollower(0, leaderAndIsrRequest, (_, _) => ())
+    appendRecords(replicaManager, topicPartition, records)
+      .onFire(response => assertEquals(Errors.NONE, response.error))
+
+    result = endPoint.fetchEpochEndOffsets(Map(
+      topicPartition -> new OffsetForLeaderPartition()
+        .setPartition(topicPartition.partition)
+        .setLeaderEpoch(4)))
+
+    expected = Map(
+      topicPartition -> new EpochEndOffset()
+        .setPartition(topicPartition.partition)
+        .setErrorCode(Errors.NONE.code)
+        .setLeaderEpoch(4)
+        .setEndOffset(6L))
+
+    assertEquals(expected, result)

Review Comment:
   Done.



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