1 /* 2 * Copyright (c) 2003, 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 */ 31 32 import java.util.ArrayList; 33 import java.util.Arrays; 34 import java.util.Collection; 35 import java.util.Collections; 36 import java.util.HashSet; 37 import java.util.LinkedHashSet; 38 import java.util.LinkedList; 39 import java.util.List; 40 import java.util.Random; 41 42 public class AddAll { 43 static final int N = 100; main(String[] args)44 public static void main(String[] args) { 45 test(new ArrayList<Integer>()); 46 test(new LinkedList<Integer>()); 47 test(new HashSet<Integer>()); 48 test(new LinkedHashSet<Integer>()); 49 } 50 51 private static Random rnd = new Random(); 52 test(Collection<Integer> c)53 static void test(Collection<Integer> c) { 54 int x = 0; 55 for (int i = 0; i < N; i++) { 56 int rangeLen = rnd.nextInt(10); 57 if (Collections.addAll(c, range(x, x + rangeLen)) != 58 (rangeLen != 0)) 59 throw new RuntimeException("" + rangeLen); 60 x += rangeLen; 61 } 62 if (c instanceof List) { 63 if (!c.equals(Arrays.asList(range(0, x)))) 64 throw new RuntimeException(x +": "+c); 65 } else { 66 if (!c.equals(new HashSet<Integer>(Arrays.asList(range(0, x))))) 67 throw new RuntimeException(x +": "+c); 68 } 69 } 70 range(int from, int to)71 private static Integer[] range(int from, int to) { 72 Integer[] result = new Integer[to - from]; 73 for (int i = from, j=0; i < to; i++, j++) 74 result[j] = new Integer(i); 75 return result; 76 } 77 } 78