[GitHub] [flink] aljoscha commented on a change in pull request #13647: [FLINK-19640] Enable sorting inputs for batch

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aljoscha commented on a change in pull request #13647:
URL: https://github.com/apache/flink/pull/13647#discussion_r505434321



##########
File path: flink-streaming-java/src/test/java/org/apache/flink/streaming/api/graph/StreamGraphGeneratorBatchExecutionTest.java
##########
@@ -0,0 +1,506 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.streaming.api.graph;
+
+import org.apache.flink.api.common.typeinfo.BasicTypeInfo;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.ExecutionOptions;
+import org.apache.flink.streaming.api.RuntimeExecutionMode;
+import org.apache.flink.streaming.api.datastream.DataStreamSink;
+import org.apache.flink.streaming.api.datastream.DataStreamSource;
+import org.apache.flink.streaming.api.datastream.MultipleConnectedStreams;
+import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
+import org.apache.flink.streaming.api.functions.KeyedProcessFunction;
+import org.apache.flink.streaming.api.functions.co.KeyedCoProcessFunction;
+import org.apache.flink.streaming.api.functions.sink.DiscardingSink;
+import org.apache.flink.streaming.api.operators.AbstractStreamOperator;
+import org.apache.flink.streaming.api.operators.AbstractStreamOperatorFactory;
+import org.apache.flink.streaming.api.operators.AbstractStreamOperatorV2;
+import org.apache.flink.streaming.api.operators.ChainingStrategy;
+import org.apache.flink.streaming.api.operators.Input;
+import org.apache.flink.streaming.api.operators.InputSelectable;
+import org.apache.flink.streaming.api.operators.InputSelection;
+import org.apache.flink.streaming.api.operators.MultipleInputStreamOperator;
+import org.apache.flink.streaming.api.operators.StreamOperator;
+import org.apache.flink.streaming.api.operators.StreamOperatorParameters;
+import org.apache.flink.streaming.api.operators.TwoInputStreamOperator;
+import org.apache.flink.streaming.api.operators.sorted.state.BatchExecutionStateBackend;
+import org.apache.flink.streaming.api.transformations.KeyedMultipleInputTransformation;
+import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;
+import org.apache.flink.util.Collector;
+import org.apache.flink.util.TestLogger;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+import java.util.Collections;
+import java.util.List;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Tests for generating correct properties for sorting inputs in {@link RuntimeExecutionMode#BATCH} runtime mode.
+ */
+public class StreamGraphGeneratorBatchExecutionTest extends TestLogger {

Review comment:
       I would probably call this an `ITCase` since we test the interplay of a lot of parts. But I'm also ok to leave it as is because we currently don't have unit tests for individual `TransformTranslators`, which could be used to test this behaviour.




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