1 // Tags: JDK1.4

     2 

     3 // Copyright (C) 2004 David Gilbert <david.gilbert@object-refinery.com>

     4 

     5 // This file is part of Mauve.

     6 

     7 // Mauve is free software; you can redistribute it and/or modify

     8 // it under the terms of the GNU General Public License as published by

     9 // the Free Software Foundation; either version 2, or (at your option)

    10 // any later version.

    11 

    12 // Mauve is distributed in the hope that it will be useful,

    13 // but WITHOUT ANY WARRANTY; without even the implied warranty of

    14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    15 // GNU General Public License for more details.

    16 

    17 // You should have received a copy of the GNU General Public License

    18 // along with Mauve; see the file COPYING.  If not, write to

    19 // the Free Software Foundation, 59 Temple Place - Suite 330,

    20 // Boston, MA 02111-1307, USA.  */

    21 

    22 package gnu.testlet.java.util.Collections;

    23 

    24 import gnu.testlet.TestHarness;

    25 import gnu.testlet.Testlet;

    26 

    27 import java.util.ArrayList;

    28 import java.util.Collections;

    29 import java.util.List;

    30 

    31 public class rotate implements Testlet

    32 {

    33 

    34   public void test(TestHarness harness) 

    35   {

    36     List list1 = new ArrayList();

    37     list1.add("t"); list1.add("a"); list1.add("n"); list1.add("k"); list1.add("s");

    38     List list2 = new ArrayList();

    39     list2.add("s"); list2.add("t"); list2.add("a"); list2.add("n"); list2.add("k"); 

    40     Collections.rotate(list1, -4);

    41     harness.check(list1.equals(list2));    // check 1

    42     

    43     // try an empty list

    44     list1 = new ArrayList();

    45     Collections.rotate(list1, 2);

    46     harness.check(list1.isEmpty());        // check 2

    47     

    48     // try a null list

    49     boolean pass = false;

    50     try

    51     {

    52       Collections.rotate(null, 2);

    53     }

    54     catch (NullPointerException e)

    55     {

    56       pass = true;

    57     }

    58     harness.check(pass);                   // check 3

    59     

    60     // try an unmodifiable list

    61     list1 = Collections.unmodifiableList(list1);

    62     pass = false;

    63     try

    64     {

    65       Collections.rotate(null, 2);

    66     }

    67     catch (NullPointerException e)

    68     {

    69       pass = true;

    70     }

    71     harness.check(pass);                   // check 4

    72 

    73   }

    74 }