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Java example source code file (DescriptorSupportTest.java)

This example Java source code file (DescriptorSupportTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bytearrayinputstream, bytearrayoutputstream, descriptorsupport, descriptorsupporttest, exception, integer, management, modelmbeaninfosupport, name, name\=blah, object, objectinputstream, objectoutputstream, runtimeoperationsexception, string, util

The DescriptorSupportTest.java Java example source code

/*
 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
 * 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 4883712 4869006 4894856 5016685
 * @summary Test that DescriptorSupport correctly validates fields
 * @author Eamonn McManus
 * @run clean DescriptorSupportTest
 * @run build DescriptorSupportTest
 * @run main DescriptorSupportTest
 */

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.management.Descriptor;
import javax.management.RuntimeOperationsException;
import javax.management.modelmbean.DescriptorSupport;
import javax.management.modelmbean.ModelMBeanInfo;
import javax.management.modelmbean.ModelMBeanInfoSupport;

public class DescriptorSupportTest {
    private static final Object[] goodFields = {
        "value", "",
        "severity", "0",
        "severity", "6",
    };

    private static final Object[] badFields = {
        "name", null,
        "name", "",
        "descriptorType", null,
        "descriptorType", "",
        "setMethod", null,
        "getMethod", null,
        "role", null,
        "class", null,
        "visibility", null,
        "visibility", new Integer(0),
        "visibility", "0",
        "visibility", new Integer(5),
        "visibility", "5",
        "severity", null,
        "severity", new Integer(-1),
        "severity", "-1",
        "severity", new Integer(7),
        "severity", "7",
        "persistPolicy", null,
        "persistPolicy", "bogusPersistPolicy",
        "persistPeriod", null,
        "persistPeriod", "not a number",
        "currencyTimeLimit", null,
        "currencyTimeLimit", "not a number",
        "lastUpdatedTimeStamp", null,
        "lastUpdatedTimeStamp", "not a number",
        "lastReturnedTimeStamp", null,
        "lastReturnedTimeStamp", "not a number",
        "log", null,
        "log", "not T or F or true or false",
        "log", new Object[0],
    };


    public static void main(String[] args) throws Exception {
        boolean ok = true;

        System.out.println("Checking that name and descriptorType are " +
                           "mandatory");
        // Try omitting name and/or descriptorType
        for (int i = 0; i < 3; i++) {
            final boolean addName = ((i & 1) != 0);
            final boolean addDescriptorType = ((i & 2) != 0);
            final List fields = new ArrayList();
            if (addName)
                fields.add("name=something");
            if (addDescriptorType)
                fields.add("descriptorType=something-else");
            final String[] fs = (String[]) fields.toArray(new String[0]);
            final String what =
                    "DescriptorSupport with " +
                    (addName ? "" : "no ") + "name and " +
                    (addDescriptorType ? "" : "no ") + "descriptorType";
            DescriptorSupport ds = new DescriptorSupport(fs);
            if (ds.isValid()) {
                System.out.println("INCORRECTLY ACCEPTED: " + what);
                ok = false;
            } else
                System.out.println("OK: rejected " + what);
        }

        for (int pass = 0; pass < 2; pass++) {
            boolean shouldAccept = (pass == 0);
            System.out.println("Trying out " +
                               (shouldAccept ? "correct" : "bogus") +
                               " DescriptorSupport fields");
            Object[] fields = shouldAccept ? goodFields : badFields;
            for (int i = 0; i < fields.length; i += 2) {
                String[] names = {"name", "descriptorType"};
                String[] values = {"some-name", "some-type"};
                DescriptorSupport d = new DescriptorSupport(names, values);
                final String name = (String) fields[i];
                final Object value = fields[i + 1];
                final String valueS =
                    (value instanceof String) ? ("\"" + value + "\"") :
                    (value == null) ? "null" : value.toString();
                final String what =
                    "DescriptorSupport with " + name + " = " + valueS;
                try {
                    d.setField(name, value);
                    if (shouldAccept)
                        System.out.println("OK: accepted " + what);
                    else {
                        System.out.println("INCORRECTLY ACCEPTED: " + what);
                        ok = false;
                    }
                } catch (RuntimeOperationsException e) {
                    if (shouldAccept) {
                        System.out.println("INCORRECTLY REJECTED: " + what +
                                           ": " + e);
                        ok = false;
                    } else {
                        System.out.println("OK: rejected " + what);
                        // OK: this is what should happen
                    }
                } catch (Exception e) {
                    System.out.println("WRONG EXCEPTION: " + what + ": " + e);
                    ok = false;
                }
            }
        }

        // 4894856: ModelMBeanInfoSupport.setDescriptor(d, "mbean") fails
        System.out.println("Checking that setDescriptor(d, \"mbean\") works");
        ModelMBeanInfo mmbi =
            new ModelMBeanInfoSupport("x", "descr", null, null, null, null);
        Descriptor d = mmbi.getDescriptor("x", "mbean");
        try {
            mmbi.setDescriptor(d, "mbean");
        } catch (Exception e) {
            System.out.println("Unexpected exception:");
            e.printStackTrace(System.out);
            ok = false;
        }

        // 5016685: DescriptorSupport forces field names to lower case
        System.out.println("Checking that field name case is ignored " +
                           "but preserved");
        ok &= caseTest(new DescriptorSupport(new String[] {"NAME=blah"}),
                       "DescriptorSupport(String[])");
        ok &= caseTest(new DescriptorSupport(new String[] {"NAME"},
                                             new String[] {"blah"}),
                       "DescriptorSupport(String[], Object[])");
        DescriptorSupport d1 = new DescriptorSupport();
        d1.setField("NAME", "blah");
        ok &= caseTest(d1, "DescriptorSupport.setField");
        d1 = new DescriptorSupport(new String[] {"NAME=blah"});
        ok &= caseTest(new DescriptorSupport(d1),
                       "DescriptorSupport(Descriptor)");
        d1 = new DescriptorSupport(new String[] {"NAME=blah"});
        ok &= caseTest(new DescriptorSupport(d1.toXMLString()),
                       "DescriptorSupport(String)");
        d1 = new DescriptorSupport(new String[] {"NAME=blah"});
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bos);
        oos.writeObject(d1);
        oos.close();
        bos.close();
        ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
        ObjectInputStream ois = new ObjectInputStream(bis);
        d1 = (DescriptorSupport) ois.readObject();
        ok &= caseTest(d1, "serialized DescriptorSupport");

        if (ok)
            System.out.println("Test passed");
        else {
            System.out.println("TEST FAILED");
            System.exit(1);
        }
    }

    private static boolean caseTest(Descriptor d, String what) {
        boolean ok = true;

        System.out.println("..." + what);

        String[] names = d.getFieldNames();
        if (names.length != 1 || !names[0].equals("NAME")) {
            ok = false;
            System.out.println("...getFieldNames() fails: " +
                               Arrays.asList(names));
        }

        String[] fields = d.getFields();
        if (fields.length != 1 || !fields[0].equals("NAME=blah")) {
            ok = false;
            System.out.println("...getFields() fails: " +
                               Arrays.asList(fields));
        }

        Object value = d.getFieldValue("namE");
        if (!"blah".equals(value)) {
            ok = false;
            System.out.println("...getFieldValue(\"namE\") fails: " + value);
        }

        Object[] values = d.getFieldValues(new String[] {"namE"});
        if (values.length != 1 || !"blah".equals(values[0])) {
            ok = false;
            System.out.println("...getFieldValues({\"namE\"}) fails: " +
                               Arrays.asList(values));
        }

        d.setField("namE", "newblah");
        Object newblah = d.getFieldValue("Name");
        if (!"newblah".equals(newblah)) {
            ok = false;
            System.out.println("...setField value not returned: " + newblah);
        }

        d.setFields(new String[] {"NaMe"}, new Object[] {"newerblah"});
        Object newerblah = d.getFieldValue("naMe");
        if (!"newerblah".equals(newerblah)) {
            ok = false;
            System.out.println("...setFields value not returned: " +
                               newerblah);
        }

        Descriptor d1 = (Descriptor) d.clone();
        newerblah = d1.getFieldValue("NAMe");
        if (!"newerblah".equals(newerblah)) {
            ok = false;
            System.out.println("...clone incorrect: " + newerblah);
        }

        d.removeField("NAme");
        names = d.getFieldNames();
        if (names.length != 0) {
            ok = false;
            System.out.println("...removeField failed: " +
                               Arrays.asList(names));
        }

        if (ok)
            System.out.println("...succeeded");

        return ok;
    }
}

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