jdk-24/test/jdk/javax/management/MBeanInfo/MBeanInfoHashCodeNPETest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 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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import javax.management.MBeanAttributeInfo;
import javax.management.MBeanConstructorInfo;
import javax.management.MBeanInfo;
import javax.management.MBeanNotificationInfo;
import javax.management.MBeanOperationInfo;
import javax.management.MBeanParameterInfo;
import javax.management.modelmbean.DescriptorSupport;
import javax.management.openmbean.SimpleType;

/*
 * @test
 * @bug 8023669
 * @summary Test that hashCode()throws NullPointerException
 * @author Shanliang JIANG
 *
 * @run clean MBeanInfoHashCodeNPETest
 * @run build MBeanInfoHashCodeNPETest
 * @run main MBeanInfoHashCodeNPETest
 */
public class MBeanInfoHashCodeNPETest {
    private static int failed = 0;

    public static void main(String[] args) throws Exception {
        System.out.println("---MBeanInfoHashCodeNPETest-main ...");

        // ----
        System.out.println("\n---Testing on MBeanAttributeInfo...");
        MBeanAttributeInfo mbeanAttributeInfo = new MBeanAttributeInfo(
                null, SimpleType.INTEGER.getClassName(), "description", true, true, false);
        test(mbeanAttributeInfo, "class name");

        mbeanAttributeInfo = new MBeanAttributeInfo(
                "name", null, "description", true, true, false);
        test(mbeanAttributeInfo, "type");

        mbeanAttributeInfo = new MBeanAttributeInfo(
                "name", SimpleType.INTEGER.getClassName(), null, true, true, false);
        test(mbeanAttributeInfo, "description");

        // ----
        System.out.println("\n---Testing on MBeanConstructorInfo...");
        MBeanConstructorInfo mbeanConstructorInfo = new MBeanConstructorInfo(
                null, "", new MBeanParameterInfo[]{}, new DescriptorSupport());
        test(mbeanConstructorInfo, "name");

        mbeanConstructorInfo = new MBeanConstructorInfo(
                "", null, new MBeanParameterInfo[]{}, new DescriptorSupport());
        test(mbeanConstructorInfo, "description");

        mbeanConstructorInfo = new MBeanConstructorInfo(
                "", "", null, new DescriptorSupport());
        test(mbeanConstructorInfo, "MBeanParameterInfo");

        mbeanConstructorInfo = new MBeanConstructorInfo(
                "", "", new MBeanParameterInfo[]{}, null);
        test(mbeanConstructorInfo, "descriptor");

        // ----
        System.out.println("\n---Testing on MBeanOperationInfo...");
        MBeanOperationInfo mbeanOperationInfo = new MBeanOperationInfo(
                null, "description", new MBeanParameterInfo[]{}, "type", 1, new DescriptorSupport());
        test(mbeanOperationInfo, "name");

        mbeanOperationInfo = new MBeanOperationInfo(
                "name", null, new MBeanParameterInfo[]{}, "type", 1, new DescriptorSupport());
        test(mbeanOperationInfo, "description");

        mbeanOperationInfo = new MBeanOperationInfo(
                "name", "description", null, "type", 1, new DescriptorSupport());
        test(mbeanOperationInfo, "MBeanParameterInfo");

        mbeanOperationInfo = new MBeanOperationInfo(
                "name", "description", new MBeanParameterInfo[]{}, null, 1, new DescriptorSupport());
        test(mbeanOperationInfo, "type");

        mbeanOperationInfo = new MBeanOperationInfo(
                "name", "description", new MBeanParameterInfo[]{}, "type", 1, null);
        test(mbeanOperationInfo, "Descriptor");

        // ----
        System.out.println("\n---Testing on MBeanParameterInfo...");
        MBeanParameterInfo mbeanParameterInfo = new MBeanParameterInfo(
                null, "type", "description", new DescriptorSupport());
        test(mbeanParameterInfo, "name");

        mbeanParameterInfo = new MBeanParameterInfo(
                "name", null, "description", new DescriptorSupport());
        test(mbeanParameterInfo, "description");

        mbeanParameterInfo = new MBeanParameterInfo(
                "name", "type", null, new DescriptorSupport());
        test(mbeanParameterInfo, "description");

        mbeanParameterInfo = new MBeanParameterInfo(
                "name", "type", "description", null);
        test(mbeanParameterInfo, "Descriptor");

        // ----
        System.out.println("\n---Testing on MBeanInfo...");
        String className = "toto";
        String description = "titi";
        MBeanAttributeInfo[] attrInfos = new MBeanAttributeInfo[]{};
        MBeanConstructorInfo[] constrInfos = new MBeanConstructorInfo[]{};
        MBeanOperationInfo[] operaInfos = new MBeanOperationInfo[]{};
        MBeanNotificationInfo[] notifInfos = new MBeanNotificationInfo[]{};

        MBeanInfo minfo = new MBeanInfo(null, description, attrInfos, constrInfos, operaInfos, notifInfos);
        test(minfo, "class name");

        minfo = new MBeanInfo(className, description, attrInfos, constrInfos, operaInfos, notifInfos);
        test(minfo, "name");

        minfo = new MBeanInfo(className, null, attrInfos, constrInfos, operaInfos, notifInfos);
        test(minfo, "description");

        minfo = new MBeanInfo(className, description, null, constrInfos, operaInfos, notifInfos);
        test(minfo, "attrInfos");

        minfo = new MBeanInfo(className, description, attrInfos, constrInfos, null, notifInfos);
        test(minfo, "operaInfos");

        minfo = new MBeanInfo(className, description, attrInfos, constrInfos, operaInfos, null);
        test(minfo, "notifInfos");

        Thread.sleep(100);
        if (failed > 0) {
            throw new RuntimeException("Test failed: "+failed);
        } else {
            System.out.println("---Test: PASSED");
        }
    }

    private static void test(Object obj, String param) {
        try {
            obj.hashCode();
            System.out.println("OK: "+obj.getClass().getSimpleName()+".hashCode worked with a null "+param);
        } catch (NullPointerException npe) {
            System.out.println("--->KO!!! "+obj.getClass().getSimpleName()+".hashCode got NPE with a null "+param);
            failed++;
        }

        try {
            obj.toString();
            System.out.println("OK: "+obj.getClass().getSimpleName()+".toString worked with a null "+param);
        } catch (NullPointerException npe) {
            System.out.println("--->KO!!! "+obj.getClass().getSimpleName()+".toString got NPE.");
            failed++;
        }
    }
}