BuildableCurrencyUnitTest.java

/**
 * Copyright (c) 2012, 2014, Credit Suisse (Anatole Tresch), Werner Keil and others by the @author tag.
 *
 * 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 org.javamoney.moneta;

import static org.testng.Assert.assertEquals;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import javax.money.CurrencyUnit;

import org.testng.annotations.Test;

/**
 * @author Philippe Marschall
 */
public class BuildableCurrencyUnitTest {

    /**
     * Tests that currencies built by {@link CurrencyUnitBuilder} are serializable.
     */
    @Test
    public void testSerialization() throws ClassNotFoundException, IOException {
        CurrencyUnit currencyUnit = CurrencyUnitBuilder.of("SDR", "serialization-test")
                .setDefaultFractionDigits(3).build(false);

        CurrencyUnit copy = (CurrencyUnit) deserailize(serailize(currencyUnit));
        assertEquals(currencyUnit, copy);
    }

    private byte[] serailize(Object obj) throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try (ObjectOutputStream objectStream = new ObjectOutputStream(out)) {
            objectStream.writeObject(obj);
        }
        return out.toByteArray();
    }

    private Object deserailize(byte[] buf) throws IOException, ClassNotFoundException {
        try (InputStream in = new ByteArrayInputStream(buf);
             ObjectInputStream objectStream = new ObjectInputStream(in)) {
            return objectStream.readObject();
        }
    }

}