/*
* Copyright ( c ) 2006 , 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 6404711
* @ summary Check capacity management
* @ author Martin Buchholz
*/
import java.io.*;
import java.util.*;
public class StickySize {
static void equalClones(BitSet s, int expectedSize) {
equal(expectedSize, clone(s).size());
equal(expectedSize, serialClone(s).size());
equal(expectedSize, s.size());
equal(clone(s), serialClone(s));
}
private static void realMain(String[] args) {
BitSet s;
s = new BitSet(); // non-sticky
equal(s.size(), 64 );
equalClones(s, 0 );
s.set(3 *64 );
s.set(7 *64 );
equal(s.size(), 8 *64 );
equalClones(s, 8 *64 );
s.clear(7 *64 );
equal(s.size(), 8 *64 );
equalClones(s, 4 *64 );
s = new BitSet(8 *64 ); // sticky
equalClones(s, 8 *64 );
s.set(3 *64 );
s.set(7 *64 );
equalClones(s, 8 *64 );
s.clear(7 *64 );
equalClones(s, 8 *64 );
equalClones(clone(s), 8 *64 );
equalClones(serialClone(s), 8 *64 );
s.set(17 *64 ); // Expand beyond sticky size
equalClones(s, 18 *64 );
s.clear(17 *64 );
equalClones(s, 4 *64 );
}
static BitSet clone(BitSet s) {
return (BitSet) s.clone();
}
//--------------------- Infrastructure ---------------------------
static volatile int passed = 0 , failed = 0 ;
static void pass() {passed++;}
static void fail() {failed++; Thread .dumpStack();}
static void fail(String msg) {System.out.println(msg); fail();}
static void unexpected(Throwable t) {failed++; t.printStackTrace();}
static void check(boolean cond) {if (cond) pass(); else fail();}
static void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(y)) pass();
else fail(x + " not equal to " + y);}
public static void main(String[] args) throws Throwable {
try {realMain(args);} catch (Throwable t) {unexpected(t);}
System.out.printf("%nPassed = %d, failed = %d%n%n" , passed, failed);
if (failed > 0 ) throw new AssertionError("Some tests failed" );}
static byte [] serializedForm(Object obj) {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
new ObjectOutputStream(baos).writeObject(obj);
return baos.toByteArray();
} catch (IOException e) { throw new RuntimeException(e); }}
static Object readObject(byte [] bytes)
throws IOException, ClassNotFoundException {
InputStream is = new ByteArrayInputStream(bytes);
return new ObjectInputStream(is).readObject();}
@SuppressWarnings("unchecked" )
static <T> T serialClone(T obj) {
try { return (T) readObject(serializedForm(obj)); }
catch (Exception e) { throw new RuntimeException(e); }}
}
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