1 /*

     2  * Copyright (c) 2010, 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 6992121

    27  * @summary Test the ArrayList.ensureCapacity() and Vector.ensureCapacity

    28  *    method with negative minimumCapacity input argument.

    29  */

    30 

    31 import java.util.ArrayList;

    32 import java.util.Vector;

    33 

    34 public class EnsureCapacity {

    35     public static void main(String[] args) {

    36         testArrayList();

    37         testVector();

    38     }

    39 

    40     private static void checkCapacity(int before, int after) {

    41         if (before != after) {

    42             throw new RuntimeException("capacity is expected to be unchanged: " +

    43                 "before=" + before + " after=" + after);

    44         }

    45     }

    46 

    47     private static void testArrayList() {

    48         ArrayList<String> al = new ArrayList<String>();

    49         al.add("abc");

    50         al.ensureCapacity(Integer.MIN_VALUE);

    51 

    52         // there is no method to query the capacity of ArrayList

    53         // so before and after capacity are not checked

    54     }

    55 

    56     private static void testVector() {

    57         Vector<String> vector = new Vector<String>();

    58         vector.add("abc");

    59 

    60         int cap = vector.capacity();

    61         vector.ensureCapacity(Integer.MIN_VALUE);

    62         checkCapacity(cap, vector.capacity());

    63     }

    64 }