1 /* 2 * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 */ 23 24 /* 25 * @test 26 * @bug 4822887 27 * @summary Basic test for Collections.addAll 28 * @author Josh Bloch 29 */ 30 31 import java.util.*; 32 33 public class AddAll { 34 final static int N = 100; 35 public static void main(String args[]) { 36 test(new ArrayList<Integer>()); 37 test(new LinkedList<Integer>()); 38 test(new HashSet<Integer>()); 39 test(new LinkedHashSet<Integer>()); 40 } 41 42 private static Random rnd = new Random(); 43 44 static void test(Collection<Integer> c) { 45 int x = 0; 46 for (int i = 0; i < N; i++) { 47 int rangeLen = rnd.nextInt(10); 48 if (Collections.addAll(c, range(x, x + rangeLen)) != 49 (rangeLen != 0)) 50 throw new RuntimeException("" + rangeLen); 51 x += rangeLen; 52 } 53 if (c instanceof List) { 54 if (!c.equals(Arrays.asList(range(0, x)))) 55 throw new RuntimeException(x +": "+c); 56 } else { 57 if (!c.equals(new HashSet<Integer>(Arrays.asList(range(0, x))))) 58 throw new RuntimeException(x +": "+c); 59 } 60 } 61 62 private static Integer[] range(int from, int to) { 63 Integer[] result = new Integer[to - from]; 64 for (int i = from, j=0; i < to; i++, j++) 65 result[j] = new Integer(i); 66 return result; 67 } 68 }