branch-0.23.1/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/serializer/TestWritableSerialization.java

/**
 * 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.hadoop.io.serializer;

import static org.apache.hadoop.io.TestGenericWritable.CONF_TEST_KEY;
import static org.apache.hadoop.io.TestGenericWritable.CONF_TEST_VALUE;
import junit.framework.TestCase;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.TestGenericWritable.Baz;
import org.apache.hadoop.io.TestGenericWritable.FooGenericWritable;

public class TestWritableSerialization extends TestCase {

  private static final Configuration conf = new Configuration();

  public void testWritableSerialization() throws Exception {
    Text before = new Text("test writable"); 
    Text after = SerializationTestUtil.testSerialization(conf, before);
    assertEquals(before, after);
  }
  
  public void testWritableConfigurable() throws Exception {
    
    //set the configuration parameter
    conf.set(CONF_TEST_KEY, CONF_TEST_VALUE);

    //reuse TestGenericWritable inner classes to test 
    //writables that also implement Configurable.
    FooGenericWritable generic = new FooGenericWritable();
    generic.setConf(conf);
    Baz baz = new Baz();
    generic.set(baz);
    Baz result = SerializationTestUtil.testSerialization(conf, baz);
    assertEquals(baz, result);
    assertNotNull(result.getConf());
  }
}