test/jdk/java/beans/XMLEncoder/6380849/TestPersistenceDelegate.java

/*
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug 6380849
 * @summary Tests PersistenceDelegate finder
 * @author Sergey Malenkov
 */

import java.beans.PersistenceDelegate;
import java.beans.XMLEncoder;
import java.beans.DefaultPersistenceDelegate;

public class TestPersistenceDelegate {

    private static final XMLEncoder ENCODER = new XMLEncoder(System.out);

    public static void main(String[] args) throws InterruptedException {
        Class<?> type = TestPersistenceDelegate.class;
        test(type, DefaultPersistenceDelegate.class);
        ENCODER.setPersistenceDelegate(type, new BeanPersistenceDelegate());
        test(type, BeanPersistenceDelegate.class);
        ENCODER.setPersistenceDelegate(type, null);
        test(type, DefaultPersistenceDelegate.class);
        // the following tests fails on previous build
        test(Bean.class, BeanPersistenceDelegate.class);
        test(BeanPersistenceDelegate.class, BeanPersistenceDelegate.class);
    }

    private static void test(Class<?> type, Class<? extends PersistenceDelegate> expected) {
        PersistenceDelegate actual = ENCODER.getPersistenceDelegate(type);
        if ((actual == null) && (expected != null)) {
            throw new Error("expected delegate is not found");
        }
        if ((actual != null) && !actual.getClass().equals(expected)) {
            throw new Error("found unexpected delegate");
        }
    }
}