/*
* 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.kafka.clients.consumer;
import org.apache.kafka.common.utils.Serializer;
import org.junit.Test;
import java.io.IOException;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertEquals;
/**
* This test case ensures OffsetAndMetadata class is serializable and is serialization compatible.
* Note: this ensures that the current code can deserialize data serialized with older versions of the code, but not the reverse.
* That is, older code won't necessarily be able to deserialize data serialized with newer code.
*/
public class SerializeCompatibilityOffsetAndMetadataTest {
private String metadata = "test commit metadata";
private String fileName = "serializedData/offsetAndMetadataSerializedfile";
private long offset = 10;
private void checkValues(OffsetAndMetadata deSerOAM) {
//assert deserialized values are same as original
assertEquals("Offset should be " + offset + " but got " + deSerOAM.offset(), offset, deSerOAM.offset());
assertEquals("metadata should be " + metadata + " but got " + deSerOAM.metadata(), metadata, deSerOAM.metadata());
}
@Test
public void testSerializationRoundtrip() throws IOException, ClassNotFoundException {
//assert OffsetAndMetadata is serializable
OffsetAndMetadata origOAM = new OffsetAndMetadata(offset, metadata);
byte[] byteArray = Serializer.serialize(origOAM);
//deserialize the byteArray and check if the values are same as original
Object deserializedObject = Serializer.deserialize(byteArray);
assertTrue(deserializedObject instanceof OffsetAndMetadata);
checkValues((OffsetAndMetadata) deserializedObject);
}
@Test
public void testOffsetMetadataSerializationCompatibility() throws IOException, ClassNotFoundException {
// assert serialized OffsetAndMetadata object in file (oamserializedfile under resources folder) is
// deserializable into OffsetAndMetadata and is compatible
Object deserializedObject = Serializer.deserialize(fileName);
assertTrue(deserializedObject instanceof OffsetAndMetadata);
checkValues((OffsetAndMetadata) deserializedObject);
}
}