ableegoldman commented on a change in pull request #9582:
URL: https://github.com/apache/kafka/pull/9582#discussion_r522476382
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File path:
streams/src/test/java/org/apache/kafka/streams/StreamsBuilderTest.java
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@@ -895,6 +898,55 @@ public void
shouldUseSpecifiedNameForAggregateOperationGivenTable() {
STREAM_OPERATION_NAME);
}
+ @Test
+ public void shouldAllowReadingFromSameTopic() {
+ builder.stream("topic");
+ builder.stream("topic");
+ builder.build();
+ }
+
+ @Test
+ public void shouldAllowSubscribingToSamePattern() {
+ builder.stream(Pattern.compile("some-regex"));
+ builder.stream(Pattern.compile("some-regex"));
+ builder.build();
+ }
+
+ @Test
+ public void shouldAllowReadingFromSameCollectionOfTopics() {
+ builder.stream(Collections.singletonList("topic"));
+ builder.stream(Collections.singletonList("topic"));
+ builder.build();
+ }
+
+ @Test
+ public void
shouldNotAllowReadingFromOverlappingAndUnequalCollectionOfTopics() {
+ builder.stream(Collections.singletonList("topic"));
+ builder.stream(asList("topic", "anotherTopic"));
+ assertThrows(TopologyException.class, builder::build);
+ }
+
+ @Test
+ public void shouldThrowWhenSubscribedToATopicWithDifferentResetPolicies() {
+ builder.stream("topic", Consumed.with(AutoOffsetReset.EARLIEST));
+ builder.stream("topic", Consumed.with(AutoOffsetReset.LATEST));
+ assertThrows(TopologyException.class, builder::build);
+ }
+
+ @Test
+ public void
shouldThrowWhenSubscribedToATopicWithSetAndUnsetResetPolicies() {
+ builder.stream("topic", Consumed.with(AutoOffsetReset.EARLIEST));
+ builder.stream("topic");
+ assertThrows(TopologyException.class, builder::build);
+ }
Review comment:
Yep that was just an oversight in the condition in `merge()`. I fixed
that and added another unit test for the case
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