/*
* Copyright 2014 Marcus Thiesen
*
* Licensed 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 de.javakaffee.web.msm.serializer.kryo;
import java.util.HashMap;
import java.util.Map;
import org.testng.annotations.Test;
import static org.testng.Assert.assertNotNull;
import de.javakaffee.web.msm.MemcachedBackupSession;
import de.javakaffee.web.msm.SessionAttributesTranscoder;
import de.javakaffee.web.msm.TranscoderDeserializationException;
import static de.javakaffee.web.msm.integration.TestUtils.assertDeepEquals;
/**
* A test to verify that the correct exception is thrown when a class
* show incompatible changes.
*
* @author Marcus Thiesen (marcus.thiesen@freiheit.com) (initial creation)
*/
public class SerializationChangeTests {
private static final String TEST_TYPE_CLASS_NAME = "test.Type";
@Test( expectedExceptions = TranscoderDeserializationException.class )
public void testDeserializationError() {
// Create a class with one simple field:
final ClassLoader loaderForCustomClassInVersion1 = ClassGenerationUtil.makeClassLoaderForCustomClass( this.getClass().getClassLoader(), TEST_TYPE_CLASS_NAME, "field1" );
final Object value = makeValueInstance( loaderForCustomClassInVersion1 );
final SessionAttributesTranscoder transcoder = new KryoTranscoderFactory().createTranscoder( loaderForCustomClassInVersion1 );
// serialize one instance
final MemcachedBackupSession memcachedBackupSession = new MemcachedBackupSession();
final Map<String, Object> attributes = new HashMap<String, Object>();
attributes.put( "test", value );
byte[] data = transcoder.serializeAttributes( memcachedBackupSession, attributes );
final Map<String, Object> deserializeAttributes = transcoder.deserializeAttributes( data );
final Object actual = deserializeAttributes.get( "test" );
assertNotNull(actual);
assertDeepEquals(actual, value);
// create same class with second field
final ClassLoader loaderForCustomClassInVersion2 = ClassGenerationUtil.makeClassLoaderForCustomClass( this.getClass().getClassLoader(), TEST_TYPE_CLASS_NAME, "field1", "field2" );
final SessionAttributesTranscoder secondTranscoder = new KryoTranscoderFactory().createTranscoder( loaderForCustomClassInVersion2 );
// this should lead to an exception
secondTranscoder.deserializeAttributes( data );
}
private static Object makeValueInstance( ClassLoader loaderForCustomClass ) {
try {
Class<?> forName = Class.forName( TEST_TYPE_CLASS_NAME, true, loaderForCustomClass );
return forName.newInstance();
} catch ( Exception e ) {
throw new RuntimeException( e );
}
}
}