| /* |
| * Copyright (c) 2003, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 4822887 |
| * @summary Basic test for Collections.addAll |
| * @author Josh Bloch |
| * @key randomness |
| */ |
| |
| import java.util.*; |
| |
| public class AddAll { |
| static final int N = 100; |
| public static void main(String args[]) { |
| test(new ArrayList<Integer>()); |
| test(new LinkedList<Integer>()); |
| test(new HashSet<Integer>()); |
| test(new LinkedHashSet<Integer>()); |
| } |
| |
| private static Random rnd = new Random(); |
| |
| static void test(Collection<Integer> c) { |
| int x = 0; |
| for (int i = 0; i < N; i++) { |
| int rangeLen = rnd.nextInt(10); |
| if (Collections.addAll(c, range(x, x + rangeLen)) != |
| (rangeLen != 0)) |
| throw new RuntimeException("" + rangeLen); |
| x += rangeLen; |
| } |
| if (c instanceof List) { |
| if (!c.equals(Arrays.asList(range(0, x)))) |
| throw new RuntimeException(x +": "+c); |
| } else { |
| if (!c.equals(new HashSet<Integer>(Arrays.asList(range(0, x))))) |
| throw new RuntimeException(x +": "+c); |
| } |
| } |
| |
| private static Integer[] range(int from, int to) { |
| Integer[] result = new Integer[to - from]; |
| for (int i = from, j=0; i < to; i++, j++) |
| result[j] = new Integer(i); |
| return result; |
| } |
| } |