/*

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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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * questions.

 */

/*

 * @test

 * @summary Test that SnmpOid hashCode is consistent with equals.

 * @bug     4955105

 * @build   SnmpOidHashCode

 * @run     main SnmpOidHashCode

 */

import java.lang.reflect.Constructor;

import java.lang.reflect.InvocationTargetException;

public class SnmpOidHashCode {

    public static final String[] oids = {

        "1.1.1.1.1.1.1.1.1",

        "1.1.1.1.1.1.1.1",

        "1.1.1.1.2.1.1.1.1",

        "1.1.1.1.1.2.1.1.1",

        "1.3.2",

        "2.3.1",

        "1.2.67."+Integer.MAX_VALUE+"."+Integer.MAX_VALUE+

        "."+Integer.MAX_VALUE+"."+Integer.MAX_VALUE+"."+Integer.MAX_VALUE+

        "1",

        "1.2."+0xFFFFFFFFL+".3."+0xFFFFFFFFL+".4."+0xFFFFFFFFL+

        ".5."+0xFFFFFFFFL+".6."+0xFFFFFFFFL+".7."+0xFFFFFFFFL+

        ".8."+0xFFFFFFFFL+".9."+0xFFFFFFFFL+".10."+0xFFFFFFFFL+

        ".11."+0xFFFFFFFFL+".12."+0xFFFFFFFFL+".13."+0xFFFFFFFFL+

        ".14."+0xFFFFFFFFL+".15."+0xFFFFFFFFL+".16."+0xFFFFFFFFL+

        ".17."+0xFFFFFFFFL+".18."+0xFFFFFFFFL+".19."+0xFFFFFFFFL+

        ".20."+0xFFFFFFFFL+".21."+0xFFFFFFFFL+".22."+0xFFFFFFFFL+

        ".23."+0xFFFFFFFFL+".24."+0xFFFFFFFFL+".25."+0xFFFFFFFFL+

        ".26."+0xFFFFFFFFL+".27."+0xFFFFFFFFL+".28."+0xFFFFFFFFL+

        ".29."+0xFFFFFFFFL+

        ".30."+0xFFFFFFFFL+".31."+0xFFFFFFFFL+".32."+0xFFFFFFFFL+

        ".33."+0xFFFFFFFFL+".34."+0xFFFFFFFFL+".35."+0xFFFFFFFFL+

        ".36."+0xFFFFFFFFL+".37."+0xFFFFFFFFL+".38."+0xFFFFFFFFL+

        ".39."+0xFFFFFFFFL

    };

    // We use an SnmpOidBuilder in order to adapt this test case to a

    // configuration where the SNMP packages are not present in rt.jar.

    //

    public static final class SnmpOidBuilder {

        public static final String SNMP_OID_CLASS_NAME =

            "com.sun.jmx.snmp.SnmpOid";

        private static final Class<?> SNMP_OID_CLASS;

        private static final Constructor<?> SNMP_OID_CTOR;

        static {

            Class<?> snmpOidClass;

            try {

                snmpOidClass =

                    Class.forName(SNMP_OID_CLASS_NAME, true, null);

            } catch (ClassNotFoundException x) {

                snmpOidClass = null;

                System.err.println("WARNING: can't load "+SNMP_OID_CLASS_NAME);

            } catch (NoClassDefFoundError x) {

                snmpOidClass = null;

                System.err.println("WARNING: can't load "+SNMP_OID_CLASS_NAME);

            }

            SNMP_OID_CLASS = snmpOidClass;

            if (SNMP_OID_CLASS != null) {

                try {

                  SNMP_OID_CTOR = snmpOidClass.getConstructor(String.class);

                } catch (Exception x) {

                    throw new ExceptionInInitializerError(x);

                }

            } else {

                SNMP_OID_CTOR = null;

            }

        }

        public static boolean isSnmpPresent() {

            System.out.println(SnmpOidHashCode.class.getName()+

                    ": Testing for SNMP Packages...");

            return SNMP_OID_CLASS != null;

        }

        public static Object newSnmpOid(String oid)

            throws InstantiationException,

                   IllegalAccessException,

                   InvocationTargetException {

            return SNMP_OID_CTOR.newInstance(oid);

        }

    }

    private static Object newSnmpOid(String oid) throws Exception {

        try {

            return SnmpOidBuilder.newSnmpOid(oid);

        } catch (InvocationTargetException x) {

            final Throwable cause = x.getCause();

            if (cause instanceof Exception) throw (Exception)cause;

            if (cause instanceof Error) throw (Error)cause;

            throw x;

        }

    }

    public static void main(String args[]) {

        if (!SnmpOidBuilder.isSnmpPresent()) {

            System.err.println("WARNING: "+

                    SnmpOidBuilder.SNMP_OID_CLASS_NAME+" not present.");

            System.err.println(SnmpOidHashCode.class.getName()+

                    ": test skipped.");

            return;

        }

        try {

            int errCount=0;

            int collisions=0;

            for (int i=0;i<oids.length;i++) {

                System.out.println("Testing " + oids[i]);

                final Object o1 = newSnmpOid(oids[i]);

                final int startCount=errCount;

                for (int j=0;j<oids.length;j++) {

                    final Object o2 = newSnmpOid(oids[j]);

                    if (o1.equals(o2)) {

                        if (!(oids[i].equals(oids[j]))) {

                            System.err.println("OIDs differ but " +

                                               "equals yields true: " +

                                               "\n\to1="+oids[i]+

                                               "\n\to2="+oids[j]);

                            errCount++;

                        }

                        if (o1.hashCode() != o2.hashCode()) {

                            System.err.println("OIDs are equal but " +

                                               "hashCode differ:" +

                                               "\n\thashCode("+o1+")="+

                                               o1.hashCode()+", "+

                                               "\n\thashCode("+o2+")="+

                                               o2.hashCode());

                            errCount++;

                        }

                    } else {

                        if (oids[i].equals(oids[j])) {

                            System.err.println("OIDs are equal but " +

                                               "equals yields false: " +

                                               "\n\to1="+oids[i]+

                                               "\n\to2="+oids[j]);

                            errCount++;

                        }

                        if (o1.hashCode() == o2.hashCode()) collisions++;

                    }

                }

                if (errCount == startCount)

                    System.out.println("*** Test Passed for: " + o1);

                else

                    System.out.println("*** Test Failed (" +

                                       (errCount - startCount) + ") for: "

                                       + o1);

            }

            if (errCount == 0) {

                System.out.println("*** -----------------------------------");

                System.out.println("*** Test SnmpOidHashCode " +

                                   "succesfully passed (" + collisions +

                                   " collisions).");

                System.out.println("*** -----------------------------------");

            } else {

                System.err.println("*** -----------------------------------");

                System.err.println("*** Test SnmpOidHashCode failed: " +

                                   errCount + " failures (" + collisions +

                                   " collisions).");

                System.err.println("*** -----------------------------------");

                System.exit(1);

            }

        } catch(Exception x) {

            x.printStackTrace();

            System.exit(2);

        }

    }

}