1 /*
  2  * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.
  8  *
  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  */
 23 
 24 /*
 25  * @test
 26  * @bug     4822887
 27  * @summary Basic test for Collections.addAll
 28  * @author  Josh Bloch
 29  * @key randomness
 30  * @library /test/lib
 31  */
 32 
 33 import jdk.test.lib.valueclass.VClass;
 34 import java.io.IOException;
 35 import java.util.ArrayList;
 36 import java.util.Arrays;
 37 import java.util.Collection;
 38 import java.util.Collections;
 39 import java.util.HashSet;
 40 import java.util.LinkedHashSet;
 41 import java.util.LinkedList;
 42 import java.util.List;
 43 import java.util.Random;
 44 
 45 public class AddAll {
 46     static final int N = 100;
 47     public static void main(String[] args) {
 48         test(new ArrayList<Integer>());
 49         test(new LinkedList<Integer>());
 50         test(new HashSet<Integer>());
 51         test(new LinkedHashSet<Integer>());
 52 
 53         testTuple(new ArrayList<VClass>());
 54         testTuple(new LinkedList<VClass>());
 55         testTuple(new HashSet<VClass>());
 56         testTuple(new LinkedHashSet<VClass>());
 57     }
 58 
 59     private static Random rnd = new Random();
 60 
 61     static void test(Collection<Integer> c) {
 62         int x = 0;
 63         for (int i = 0; i < N; i++) {
 64             int rangeLen = rnd.nextInt(10);
 65             if (Collections.addAll(c, range(x, x + rangeLen)) !=
 66                     (rangeLen != 0))
 67                 throw new RuntimeException("" + rangeLen);
 68             x += rangeLen;
 69         }
 70         if (c instanceof List) {
 71             if (!c.equals(Arrays.asList(range(0, x))))
 72                 throw new RuntimeException(x +": "+c);
 73         } else {
 74             if (!c.equals(new HashSet<Integer>(Arrays.asList(range(0, x)))))
 75                 throw new RuntimeException(x +": "+c);
 76         }
 77     }
 78 
 79     private static Integer[] range(int from, int to) {
 80         Integer[] result = new Integer[to - from];
 81         for (int i = from, j=0; i < to; i++, j++)
 82             result[j] = new Integer(i);
 83         return result;
 84     }
 85 
 86     static void testTuple(Collection<VClass> c) {
 87         int x = 0;
 88         for (int i = 0; i < N; i++) {
 89             int rangeLen = rnd.nextInt(10);
 90             if (Collections.addAll(c, rangeTuple(x, x + rangeLen)) !=
 91                     (rangeLen != 0))
 92                 throw new RuntimeException("" + rangeLen);
 93             x += rangeLen;
 94         }
 95         if (c instanceof List) {
 96             if (!c.equals(Arrays.asList(rangeTuple(0, x))))
 97                 throw new RuntimeException(x + ": " + c);
 98         } else {
 99             if (!c.equals(new HashSet<VClass>(Arrays.asList(rangeTuple(0, x)))))
100                 throw new RuntimeException(x + ": " + c);
101         }
102     }
103 
104     private static VClass[] rangeTuple(int from, int to) {
105         VClass[] result = new VClass[to - from];
106         for (int i = from, j = 0; i < to; i++, j++)
107             result[j] = new VClass(i, new int[] { i });
108         return result;
109     }
110 }
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