DuplicateGetterTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * 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,
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/*
 * @test
 * @bug 6518061
 * @summary Test that an MBean interface can inherit two methods with
 * the same signature from two unrelated parent interfaces
 * @author Eamonn McManus
 */

import java.util.*;
import java.lang.reflect.*;
import javax.management.*;

public class DuplicateGetterTest {
    public static interface FooMBean {
        public MBeanNotificationInfo[] getNotificationInfo();
    }

    public static interface BazMBean {
        public MBeanNotificationInfo[] getNotificationInfo();
    }

    public static interface BarMBean extends FooMBean, BazMBean {
    }

    public static class Bar implements BarMBean {
        public MBeanNotificationInfo[] getNotificationInfo() {
            return null;
        }
    }

    public static void main(String[] args) throws Exception {
        System.out.println("Testing that inheriting the same getter from " +
                           "more than one interface does not cause problems");
        DynamicMBean mbean =
            new StandardMBean(new Bar(), BarMBean.class);
        // Before fix, preceding line threw exception
        MBeanAttributeInfo[] attrs = mbean.getMBeanInfo().getAttributes();
        System.out.println("Attributes: " + Arrays.toString(attrs));
        if (attrs.length != 1)
            throw new Exception("Wrong number of attributes: " + attrs.length);
        if (!attrs[0].getName().equals("NotificationInfo"))
            throw new Exception("Wrong attribute name: " + attrs[0].getName());
        System.out.println("Test passed");
    }
}