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/* |
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* Copyright (c) 2000, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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|
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/* |
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* @test |
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* @bug 4245809 8029795 |
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* @summary Basic test for LinkedHashMap. (Based on MapBash) |
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*/ |
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|
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import java.io.ByteArrayInputStream; |
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import java.io.ByteArrayOutputStream; |
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import java.io.ObjectInputStream; |
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import java.io.ObjectOutputStream; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.LinkedHashMap; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Objects; |
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import java.util.Random; |
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import java.util.Set; |
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import java.util.function.BiFunction; |
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|
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public class Basic { |
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static final Random rnd = new Random(666); |
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static final Integer nil = new Integer(0); |
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|
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public static void main(String[] args) throws Exception { |
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int numItr = 500; |
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int mapSize = 500; |
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|
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// Linked List testk |
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for (int i=0; i<numItr; i++) { |
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Map<Integer,Integer> m = new LinkedHashMap(); |
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Integer head = nil; |
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|
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for (int j=0; j<mapSize; j++) { |
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Integer newHead; |
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do { |
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newHead = new Integer(rnd.nextInt()); |
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} while (m.containsKey(newHead)); |
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m.put(newHead, head); |
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head = newHead; |
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} |
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if (m.size() != mapSize) |
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throw new Exception("Size not as expected."); |
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|
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if (new HashMap(m).hashCode() != m.hashCode()) |
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throw new Exception("Incorrect hashCode computation."); |
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|
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Map<Integer,Integer> m2 = new LinkedHashMap(); m2.putAll(m); |
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m2.values().removeAll(m.keySet()); |
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if (m2.size()!= 1 || !m2.containsValue(nil)) |
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throw new Exception("Collection views test failed."); |
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|
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int j=0; |
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while (head != nil) { |
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if (!m.containsKey(head)) |
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throw new Exception("Linked list doesn't contain a link."); |
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Integer newHead = m.get(head); |
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if (newHead == null) |
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throw new Exception("Could not retrieve a link."); |
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m.remove(head); |
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head = newHead; |
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j++; |
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} |
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if (!m.isEmpty()) |
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throw new Exception("Map nonempty after removing all links."); |
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if (j != mapSize) |
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throw new Exception("Linked list size not as expected."); |
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} |
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|
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Map<Integer,Integer> m = new LinkedHashMap(); |
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for (int i=0; i<mapSize; i++) |
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if (m.put(new Integer(i), new Integer(2*i)) != null) |
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throw new Exception("put returns non-null value erroneously."); |
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for (int i=0; i<2*mapSize; i++) |
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if (m.containsValue(new Integer(i)) != (i%2==0)) |
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throw new Exception("contains value "+i); |
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if (m.put(nil, nil) == null) |
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throw new Exception("put returns a null value erroneously."); |
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Map<Integer,Integer> m2 = new LinkedHashMap(); m2.putAll(m); |
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if (!m.equals(m2)) |
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throw new Exception("Clone not equal to original. (1)"); |
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if (!m2.equals(m)) |
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throw new Exception("Clone not equal to original. (2)"); |
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Set<Map.Entry<Integer,Integer>> s = m.entrySet(), s2 = m2.entrySet(); |
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if (!s.equals(s2)) |
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throw new Exception("Clone not equal to original. (3)"); |
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if (!s2.equals(s)) |
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throw new Exception("Clone not equal to original. (4)"); |
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if (!s.containsAll(s2)) |
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throw new Exception("Original doesn't contain clone!"); |
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if (!s2.containsAll(s)) |
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throw new Exception("Clone doesn't contain original!"); |
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|
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m2 = serClone(m); |
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if (!m.equals(m2)) |
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throw new Exception("Serialize Clone not equal to original. (1)"); |
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if (!m2.equals(m)) |
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throw new Exception("Serialize Clone not equal to original. (2)"); |
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s = m.entrySet(); s2 = m2.entrySet(); |
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if (!s.equals(s2)) |
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throw new Exception("Serialize Clone not equal to original. (3)"); |
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if (!s2.equals(s)) |
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throw new Exception("Serialize Clone not equal to original. (4)"); |
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if (!s.containsAll(s2)) |
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throw new Exception("Original doesn't contain Serialize clone!"); |
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if (!s2.containsAll(s)) |
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throw new Exception("Serialize Clone doesn't contain original!"); |
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|
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s2.removeAll(s); |
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if (!m2.isEmpty()) |
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throw new Exception("entrySet().removeAll failed."); |
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|
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m2.putAll(m); |
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m2.clear(); |
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if (!m2.isEmpty()) |
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throw new Exception("clear failed."); |
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|
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Iterator it = m.entrySet().iterator(); |
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while (it.hasNext()) { |
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it.next(); |
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it.remove(); |
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} |
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if (!m.isEmpty()) |
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throw new Exception("Iterator.remove() failed"); |
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|
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// Test ordering properties with insert order |
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m = new LinkedHashMap(); |
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List<Integer> l = new ArrayList(mapSize); |
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for (int i=0; i<mapSize; i++) { |
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Integer x = new Integer(i); |
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m.put(x, x); |
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l.add(x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l)) |
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throw new Exception("Insertion order not preserved."); |
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for (int i=mapSize-1; i>=0; i--) { |
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Integer x = (Integer) l.get(i); |
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if (!m.get(x).equals(x)) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l)) |
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throw new Exception("Insertion order not preserved after read."); |
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|
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for (int i=mapSize-1; i>=0; i--) { |
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Integer x = (Integer) l.get(i); |
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m.put(x, x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l)) |
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throw new Exception("Insert order not preserved after reinsert."); |
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|
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m2 = (Map) ((LinkedHashMap)m).clone(); |
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if (!m.equals(m2)) |
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throw new Exception("Insert-order Map != clone."); |
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|
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List<Integer> l2 = new ArrayList(l); |
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Collections.shuffle(l2); |
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!m2.get(x).equals(x)) |
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throw new Exception("Clone: Wrong val: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m2.keySet()).equals(l)) |
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throw new Exception("Clone: altered by read."); |
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|
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// Test ordering properties with access order |
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m = new LinkedHashMap(2*mapSize, .75f, true); |
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for (int i=0; i<mapSize; i++) { |
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Integer x = new Integer(i); |
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m.put(x, x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l)) |
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throw new Exception("Insertion order not properly preserved."); |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!m.get(x).equals(x)) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l2)) |
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throw new Exception("Insert order not properly altered by read."); |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!m.getOrDefault(x, new Integer(i + 1000)).equals(x)) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l2)) |
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throw new Exception("Insert order not properly altered by read."); |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!m.replace(x, x).equals(x)) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l2)) |
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throw new Exception("Insert order not properly altered by replace."); |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!m.replace(x, x, x)) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l2)) |
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throw new Exception("Insert order not properly altered by replace."); |
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|
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BiFunction<Integer,Integer,Integer> f = (Integer y, Integer z) -> { |
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if (!Objects.equals(y,z)) |
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throw new RuntimeException("unequal " + y + "," + z); |
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return new Integer(z); |
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}; |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!x.equals(m.merge(x, x, f))) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l2)) |
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throw new Exception("Insert order not properly altered by replace."); |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!x.equals(m.compute(x, f))) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l2)) |
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throw new Exception("Insert order not properly altered by replace."); |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!x.equals(m.remove(x))) |
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throw new Exception("Missing key: "+i+", "+x); |
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if (!x.equals(m.computeIfAbsent(x, Integer::valueOf))) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l2)) |
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throw new Exception("Insert order not properly altered by replace."); |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l2.get(i); |
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if (!x.equals(m.computeIfPresent(x, f))) |
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throw new Exception("Wrong value: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l2)) |
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throw new Exception("Insert order not properly altered by replace."); |
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|
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for (int i=0; i<mapSize; i++) { |
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Integer x = new Integer(i); |
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m.put(x, x); |
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} |
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if (!new ArrayList(m.keySet()).equals(l)) |
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throw new Exception("Insertion order not altered by reinsert."); |
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|
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m2 = (Map) ((LinkedHashMap)m).clone(); |
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if (!m.equals(m2)) |
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throw new Exception("Access-order Map != clone."); |
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for (int i=0; i<mapSize; i++) { |
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Integer x = (Integer) l.get(i); |
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if (!m2.get(x).equals(x)) |
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throw new Exception("Clone: Wrong val: "+i+", "+m.get(x)+", "+x); |
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} |
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if (!new ArrayList(m2.keySet()).equals(l)) |
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throw new Exception("Clone: order not properly altered by read."); |
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|
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System.err.println("Success."); |
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} |
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|
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private static Map serClone(Map m) { |
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Map result = null; |
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try { |
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// Serialize |
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ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
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ObjectOutputStream out = new ObjectOutputStream(bos); |
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out.writeObject(m); |
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out.flush(); |
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|
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// Deserialize |
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ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray()); |
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out.close(); |
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ObjectInputStream in = new ObjectInputStream(bis); |
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result = (Map)in.readObject(); |
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in.close(); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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return result; |
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} |
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} |
