192 lines
8.0 KiB
Java
192 lines
8.0 KiB
Java
/*
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* Copyright 2003-2008 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @summary Test that SnmpOid hashCode is consistent with equals.
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* @bug 4955105
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* @build SnmpOidHashCode
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* @run main SnmpOidHashCode
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*/
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import java.lang.reflect.Constructor;
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import java.lang.reflect.InvocationTargetException;
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public class SnmpOidHashCode {
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public static final String[] oids = {
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"1.1.1.1.1.1.1.1.1",
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"1.1.1.1.1.1.1.1",
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"1.1.1.1.2.1.1.1.1",
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"1.1.1.1.1.2.1.1.1",
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"1.3.2",
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"2.3.1",
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"1.2.67."+Integer.MAX_VALUE+"."+Integer.MAX_VALUE+
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"."+Integer.MAX_VALUE+"."+Integer.MAX_VALUE+"."+Integer.MAX_VALUE+
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"1",
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"1.2."+0xFFFFFFFFL+".3."+0xFFFFFFFFL+".4."+0xFFFFFFFFL+
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".5."+0xFFFFFFFFL+".6."+0xFFFFFFFFL+".7."+0xFFFFFFFFL+
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".8."+0xFFFFFFFFL+".9."+0xFFFFFFFFL+".10."+0xFFFFFFFFL+
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".11."+0xFFFFFFFFL+".12."+0xFFFFFFFFL+".13."+0xFFFFFFFFL+
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".14."+0xFFFFFFFFL+".15."+0xFFFFFFFFL+".16."+0xFFFFFFFFL+
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".17."+0xFFFFFFFFL+".18."+0xFFFFFFFFL+".19."+0xFFFFFFFFL+
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".20."+0xFFFFFFFFL+".21."+0xFFFFFFFFL+".22."+0xFFFFFFFFL+
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".23."+0xFFFFFFFFL+".24."+0xFFFFFFFFL+".25."+0xFFFFFFFFL+
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".26."+0xFFFFFFFFL+".27."+0xFFFFFFFFL+".28."+0xFFFFFFFFL+
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".29."+0xFFFFFFFFL+
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".30."+0xFFFFFFFFL+".31."+0xFFFFFFFFL+".32."+0xFFFFFFFFL+
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".33."+0xFFFFFFFFL+".34."+0xFFFFFFFFL+".35."+0xFFFFFFFFL+
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".36."+0xFFFFFFFFL+".37."+0xFFFFFFFFL+".38."+0xFFFFFFFFL+
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".39."+0xFFFFFFFFL
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};
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// We use an SnmpOidBuilder in order to adapt this test case to a
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// configuration where the SNMP packages are not present in rt.jar.
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//
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public static final class SnmpOidBuilder {
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public static final String SNMP_OID_CLASS_NAME =
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"com.sun.jmx.snmp.SnmpOid";
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private static final Class<?> SNMP_OID_CLASS;
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private static final Constructor<?> SNMP_OID_CTOR;
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static {
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Class<?> snmpOidClass;
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try {
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snmpOidClass =
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Class.forName(SNMP_OID_CLASS_NAME, true, null);
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} catch (ClassNotFoundException x) {
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snmpOidClass = null;
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System.err.println("WARNING: can't load "+SNMP_OID_CLASS_NAME);
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} catch (NoClassDefFoundError x) {
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snmpOidClass = null;
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System.err.println("WARNING: can't load "+SNMP_OID_CLASS_NAME);
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}
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SNMP_OID_CLASS = snmpOidClass;
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if (SNMP_OID_CLASS != null) {
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try {
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SNMP_OID_CTOR = snmpOidClass.getConstructor(String.class);
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} catch (Exception x) {
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throw new ExceptionInInitializerError(x);
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}
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} else {
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SNMP_OID_CTOR = null;
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}
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}
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public static boolean isSnmpPresent() {
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System.out.println(SnmpOidHashCode.class.getName()+
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": Testing for SNMP Packages...");
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return SNMP_OID_CLASS != null;
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}
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public static Object newSnmpOid(String oid)
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throws InstantiationException,
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IllegalAccessException,
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InvocationTargetException {
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return SNMP_OID_CTOR.newInstance(oid);
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}
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}
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private static Object newSnmpOid(String oid) throws Exception {
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try {
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return SnmpOidBuilder.newSnmpOid(oid);
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} catch (InvocationTargetException x) {
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final Throwable cause = x.getCause();
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if (cause instanceof Exception) throw (Exception)cause;
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if (cause instanceof Error) throw (Error)cause;
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throw x;
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}
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}
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public static void main(String args[]) {
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if (!SnmpOidBuilder.isSnmpPresent()) {
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System.err.println("WARNING: "+
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SnmpOidBuilder.SNMP_OID_CLASS_NAME+" not present.");
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System.err.println(SnmpOidHashCode.class.getName()+
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": test skipped.");
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return;
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}
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try {
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int errCount=0;
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int collisions=0;
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for (int i=0;i<oids.length;i++) {
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System.out.println("Testing " + oids[i]);
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final Object o1 = newSnmpOid(oids[i]);
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final int startCount=errCount;
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for (int j=0;j<oids.length;j++) {
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final Object o2 = newSnmpOid(oids[j]);
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if (o1.equals(o2)) {
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if (!(oids[i].equals(oids[j]))) {
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System.err.println("OIDs differ but " +
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"equals yields true: " +
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"\n\to1="+oids[i]+
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"\n\to2="+oids[j]);
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errCount++;
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}
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if (o1.hashCode() != o2.hashCode()) {
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System.err.println("OIDs are equal but " +
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"hashCode differ:" +
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"\n\thashCode("+o1+")="+
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o1.hashCode()+", "+
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"\n\thashCode("+o2+")="+
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o2.hashCode());
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errCount++;
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}
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} else {
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if (oids[i].equals(oids[j])) {
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System.err.println("OIDs are equal but " +
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"equals yields false: " +
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"\n\to1="+oids[i]+
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"\n\to2="+oids[j]);
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errCount++;
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}
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if (o1.hashCode() == o2.hashCode()) collisions++;
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}
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}
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if (errCount == startCount)
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System.out.println("*** Test Passed for: " + o1);
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else
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System.out.println("*** Test Failed (" +
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(errCount - startCount) + ") for: "
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+ o1);
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}
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if (errCount == 0) {
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System.out.println("*** -----------------------------------");
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System.out.println("*** Test SnmpOidHashCode " +
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"succesfully passed (" + collisions +
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" collisions).");
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System.out.println("*** -----------------------------------");
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} else {
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System.err.println("*** -----------------------------------");
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System.err.println("*** Test SnmpOidHashCode failed: " +
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errCount + " failures (" + collisions +
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" collisions).");
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System.err.println("*** -----------------------------------");
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System.exit(1);
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}
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} catch(Exception x) {
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x.printStackTrace();
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System.exit(2);
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}
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}
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}
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