/*
* 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.api.java.functions;
import org.apache.flink.api.common.InvalidProgramException;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.api.java.ClosureCleaner;
import org.junit.Assert;
import org.junit.Test;
import java.io.Serializable;
public class ClosureCleanerTest {
@Test(expected = InvalidProgramException.class)
public void testNonSerializable() throws Exception {
MapCreator creator = new NonSerializableMapCreator();
MapFunction<Integer, Integer> map = creator.getMap();
ClosureCleaner.ensureSerializable(map);
int result = map.map(3);
Assert.assertEquals(result, 4);
}
@Test
public void testCleanedNonSerializable() throws Exception {
MapCreator creator = new NonSerializableMapCreator();
MapFunction<Integer, Integer> map = creator.getMap();
ClosureCleaner.clean(map, true);
int result = map.map(3);
Assert.assertEquals(result, 4);
}
@Test
public void testSerializable() throws Exception {
MapCreator creator = new SerializableMapCreator(1);
MapFunction<Integer, Integer> map = creator.getMap();
ClosureCleaner.clean(map, true);
int result = map.map(3);
Assert.assertEquals(result, 4);
}
@Test
public void testNestedSerializable() throws Exception {
MapCreator creator = new NestedSerializableMapCreator(1);
MapFunction<Integer, Integer> map = creator.getMap();
ClosureCleaner.clean(map, true);
ClosureCleaner.ensureSerializable(map);
int result = map.map(3);
Assert.assertEquals(result, 4);
}
@Test(expected = InvalidProgramException.class)
public void testNestedNonSerializable() throws Exception {
MapCreator creator = new NestedNonSerializableMapCreator(1);
MapFunction<Integer, Integer> map = creator.getMap();
ClosureCleaner.clean(map, true);
ClosureCleaner.ensureSerializable(map);
int result = map.map(3);
Assert.assertEquals(result, 4);
}
}
interface MapCreator {
MapFunction<Integer, Integer> getMap();
}
@SuppressWarnings("serial")
class NonSerializableMapCreator implements MapCreator {
@Override
public MapFunction<Integer, Integer> getMap() {
return new MapFunction<Integer, Integer>() {
@Override
public Integer map(Integer value) throws Exception {
return value + 1;
}
};
}
}
@SuppressWarnings("serial")
class SerializableMapCreator implements MapCreator, Serializable {
private int add = 0;
public SerializableMapCreator(int add) {
this.add = add;
}
@Override
public MapFunction<Integer, Integer> getMap() {
return new MapFunction<Integer, Integer>() {
@Override
public Integer map(Integer value) throws Exception {
return value + add;
}
};
}
}
@SuppressWarnings("serial")
class NestedSerializableMapCreator implements MapCreator, Serializable {
private int add = 0;
private InnerSerializableMapCreator inner;
public NestedSerializableMapCreator(int add) {
this.add = add;
this.inner = new InnerSerializableMapCreator();
}
@Override
public MapFunction<Integer, Integer> getMap() {
return inner.getMap();
}
class InnerSerializableMapCreator implements MapCreator, Serializable {
@Override
public MapFunction<Integer, Integer> getMap() {
return new MapFunction<Integer, Integer>() {
@Override
public Integer map(Integer value) throws Exception {
return value + add;
}
};
}
}
}
class NestedNonSerializableMapCreator implements MapCreator {
private int add = 0;
private InnerSerializableMapCreator inner;
public NestedNonSerializableMapCreator(int add) {
this.add = add;
this.inner = new InnerSerializableMapCreator();
}
@Override
public MapFunction<Integer, Integer> getMap() {
return inner.getMap();
}
@SuppressWarnings("serial")
class InnerSerializableMapCreator implements MapCreator, Serializable {
@Override
public MapFunction<Integer, Integer> getMap() {
return new MapFunction<Integer, Integer>() {
@Override
public Integer map(Integer value) throws Exception {
return value + getMeTheAdd();
}
};
}
public int getMeTheAdd() {
return add;
}
}
}