/*
* Copyright 2003-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any 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);
}
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);
}
}
}