| /* |
| * Copyright (c) 2013, 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. |
| */ |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.util.HashSet; |
| import java.util.Random; |
| import java.util.concurrent.ThreadLocalRandom; |
| |
| /* |
| * @test |
| * @bug 8016252 |
| * @summary Verify that a serialized HashSet may successfully be deserialized. |
| */ |
| public class Serialization { |
| |
| private static final int NUM_SETS = 43; |
| private static final int MAX_CAPACITY = 257; |
| private static final float MAX_LOAD_FACTOR = 100.0F; |
| |
| private static final Random rnd = ThreadLocalRandom.current(); |
| |
| private static HashSet<Integer> createHashSet() { |
| int capacity = rnd.nextInt(MAX_CAPACITY); |
| float loadFactor = Float.MIN_VALUE + rnd.nextFloat()*MAX_LOAD_FACTOR; |
| HashSet<Integer> hashSet = new HashSet<Integer>(capacity, loadFactor); |
| float multiplier = 2*rnd.nextFloat(); // range [0,2] |
| int size = (int)(capacity*loadFactor*multiplier); |
| for (int i = 0; i < size; i++) { |
| hashSet.add(rnd.nextInt()); |
| } |
| return hashSet; |
| } |
| |
| private static HashSet<Integer> serDeser(HashSet<Integer> hashSet) throws IOException, ClassNotFoundException { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ObjectOutputStream oos = new ObjectOutputStream(baos); |
| oos.writeObject(hashSet); |
| oos.flush(); |
| |
| ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); |
| ObjectInputStream ois = new ObjectInputStream(bais); |
| HashSet<Integer> result = (HashSet<Integer>)ois.readObject(); |
| |
| oos.close(); |
| ois.close(); |
| |
| return result; |
| } |
| |
| private static void printHashSet(HashSet<Integer> hashSet) { |
| System.err.println("Size: "+hashSet.size()); |
| for (Object o : hashSet) { |
| System.err.println(o); |
| } |
| } |
| |
| public static void main(String[] args) { |
| int failures = 0; |
| |
| for (int i = 0; i < NUM_SETS; i++) { |
| HashSet<Integer> hashSet = createHashSet(); |
| |
| HashSet<Integer> result = null; |
| try { |
| result = serDeser(hashSet); |
| } catch (IOException ioe) { |
| System.err.println(ioe); |
| failures++; |
| } catch (ClassNotFoundException cnfe) { |
| System.err.println(cnfe); |
| failures++; |
| } |
| |
| if (!hashSet.equals(result)) { |
| System.err.println("Unequal HashSets!"); |
| printHashSet(hashSet); |
| System.err.println(); |
| failures++; |
| } |
| } |
| |
| if (failures != 0) { |
| throw new RuntimeException("HashSet/Serialzation failed with "+ |
| failures+" failures!"); |
| } |
| } |
| } |