AHeise commented on a change in pull request #9564:
[FLINK-12481][FLINK-12482][FLINK-12958] Streaming runtime: integrate mailbox
for timer triggers, checkpoints and AsyncWaitOperator
URL: https://github.com/apache/flink/pull/9564#discussion_r320225657
##########
File path:
flink-streaming-java/src/test/java/org/apache/flink/streaming/api/operators/async/AsyncWaitOperatorTest.java
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@@ -1127,4 +1073,15 @@ public void testEndInput() throws Exception {
}
}
}
+
+ private static <OUT> OneInputStreamOperatorTestHarness<Integer, OUT>
createTestHarness(
Review comment:
+1 to reduce boilerblate
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