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[FLINK-38199] Allow to specify output in AbstractStreamOperatorTestHarness #26876

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Merged
rkhachatryan merged 1 commit into from
Aug 6, 2025
+11 −2
Merged

[FLINK-38199] Allow to specify output in AbstractStreamOperatorTestHarness #26876

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13 changes: 11 additions & 2 deletions ...time/src/test/java/org/apache/flink/streaming/util/AbstractStreamOperatorTestHarness.java
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Original file line number Diff line number Diff line change
Expand Up @@ -99,6 +99,7 @@
import java.util.Optional;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.function.BiConsumer;
import java.util.function.Function;
import java.util.stream.Collectors;

import static org.apache.flink.streaming.api.operators.StreamOperatorUtils.setProcessingTimeService;
Expand Down Expand Up @@ -187,6 +188,9 @@ public <K> InternalTimeServiceManager<K> create(

private long restoredCheckpointId = 0;

private Function<TypeSerializer<OUT>, Output<StreamRecord<OUT>>> outputCreator =
MockOutput::new;

public AbstractStreamOperatorTestHarness(
StreamOperator<OUT> operator, int maxParallelism, int parallelism, int subtaskIndex)
throws Exception {
Expand Down Expand Up @@ -364,6 +368,11 @@ public void setStateBackend(StateBackend stateBackend) {
}
}

public void setOutputCreator(
Function<TypeSerializer<OUT>, Output<StreamRecord<OUT>>> outputCreator) {
this.outputCreator = outputCreator;
}

public void setCheckpointStorage(CheckpointStorage storage) {
if (stateBackend instanceof CheckpointStorage) {
return;
Expand Down Expand Up @@ -469,7 +478,7 @@ public void setup(TypeSerializer<OUT> outputSerializer) {
factory,
mockTask,
config,
new MockOutput(outputSerializer),
outputCreator.apply(outputSerializer),
new OperatorEventDispatcherImpl(
this.getClass().getClassLoader(),
new NoOpTaskOperatorEventGateway()))
Expand All @@ -482,7 +491,7 @@ public void setup(TypeSerializer<OUT> outputSerializer) {
(AbstractStreamOperator) operator,
mockTask,
config,
new MockOutput(outputSerializer));
outputCreator.apply(outputSerializer));
}
}
setupCalled = true;
Expand Down