/*
* 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.beam.sdk.util;
import static org.junit.Assert.assertEquals;
import com.google.common.collect.ImmutableList;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.util.List;
import org.apache.beam.sdk.coders.AtomicCoder;
import org.apache.beam.sdk.coders.Coder;
import org.apache.beam.sdk.coders.CoderException;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link SerializableUtils}. */
@RunWith(JUnit4.class)
public class SerializableUtilsTest {
@Rule public ExpectedException expectedException = ExpectedException.none();
/** A class that is serializable by Java. */
private static class SerializableByJava implements Serializable {
final String stringValue;
final int intValue;
public SerializableByJava(String stringValue, int intValue) {
this.stringValue = stringValue;
this.intValue = intValue;
}
}
@Test
public void testTranscode() {
String stringValue = "hi bob";
int intValue = 42;
SerializableByJava testObject = new SerializableByJava(stringValue, intValue);
SerializableByJava testCopy = SerializableUtils.ensureSerializable(testObject);
assertEquals(stringValue, testCopy.stringValue);
assertEquals(intValue, testCopy.intValue);
}
@Test
public void testDeserializationError() {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("unable to deserialize a bogus string");
SerializableUtils.deserializeFromByteArray(
"this isn't legal".getBytes(),
"a bogus string");
}
/** A class that is not serializable by Java. */
private static class UnserializableByJava implements Serializable {
@SuppressWarnings("unused")
private Object unserializableField = new Object();
}
@Test
public void testSerializationError() {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("unable to serialize");
SerializableUtils.serializeToByteArray(new UnserializableByJava());
}
/** A {@link Coder} that is not serializable by Java. */
private static class UnserializableCoderByJava extends AtomicCoder<Object> {
private final Object unserializableField = new Object();
@Override
public void encode(Object value, OutputStream outStream)
throws CoderException, IOException {
}
@Override
public Object decode(InputStream inStream)
throws CoderException, IOException {
return unserializableField;
}
@Override
public List<? extends Coder<?>> getCoderArguments() {
return ImmutableList.of();
}
@Override
public void verifyDeterministic() throws NonDeterministicException {}
}
@Test
public void testEnsureSerializableWithUnserializableCoderByJava() {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("unable to serialize");
SerializableUtils.ensureSerializable(new UnserializableCoderByJava());
}
}