Yunyung commented on code in PR #19983:
URL: https://github.com/apache/kafka/pull/19983#discussion_r2154806961
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clients/src/test/java/org/apache/kafka/clients/consumer/internals/SubscriptionStateTest.java:
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@@ -113,6 +116,54 @@ public void partitionAssignmentChangeOnTopicSubscription()
{
assertEquals(0, state.numAssignedPartitions());
}
+ @Test
+ public void testIsFetchableOnManualAssignment() {
+ state.assignFromUser(Set.of(tp0, tp1));
+ assertAssignedPartitionIsFetchable();
+ }
+
+ @Test
+ public void testIsFetchableOnAutoAssignment() {
+ state.subscribe(Set.of(topic), Optional.of(rebalanceListener));
+ state.assignFromSubscribed(Set.of(tp0, tp1));
+ assertAssignedPartitionIsFetchable();
+ }
+
+ private void assertAssignedPartitionIsFetchable() {
+ assertEquals(2, state.assignedPartitions().size());
+ assertTrue(state.assignedPartitions().contains(tp0));
+ assertTrue(state.assignedPartitions().contains(tp1));
+
+ assertFalse(state.isFetchable(tp0), "Should not be fetchable without a
valid position");
+ assertFalse(state.isFetchable(tp1), "Should not be fetchable without a
valid position");
+
+ state.seek(tp0, 1);
+ state.seek(tp1, 1);
+
+ assertTrue(state.isFetchable(tp0));
+ assertTrue(state.isFetchable(tp1));
+ }
+
+ @Test
+ public void testIsFetchableConsidersExplicitTopicSubscription() {
+ state.subscribe(Set.of(topic1), Optional.of(rebalanceListener));
+ state.assignFromSubscribed(singleton(t1p0));
Review Comment:
Nit: Set.of
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