1 // Tags: JDK1.2

     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.Collection;

    29 import java.util.Collections;

    30 import java.util.List;

    31 import java.util.NoSuchElementException;

    32 

    33 public class max implements Testlet

    34 {

    35 

    36   public void test(TestHarness harness) 

    37   {

    38     List list = new ArrayList();

    39   

    40     // try an empty list

    41     boolean pass = false;

    42     try

    43     {

    44       Object m = Collections.max(list);

    45     }

    46     catch (NoSuchElementException e)

    47     {

    48       pass = true;

    49     }

    50     harness.check(true);

    51   

    52     // try a regular list

    53     list.add(new Integer(12));

    54     list.add(new Integer(9));

    55     list.add(new Integer(17));

    56     harness.check(Collections.max(list).equals(new Integer(17)));

    57 

    58     // try a null list

    59     pass = false;

    60     try

    61     {

    62       Object ignore = Collections.max((Collection)null);

    63     }

    64     catch (NullPointerException e) 

    65     {

    66       pass = true;

    67     }

    68     harness.check(pass);

    69   

    70     // try a list with non-comparable items

    71     list.clear();

    72     list.add("A"); list.add(new Long(1));

    73     pass = false;

    74     try

    75     {

    76       Object ignore = Collections.max(list);

    77     }

    78     catch (ClassCastException e) 

    79     {

    80       pass = true;

    81     }

    82     harness.check(pass);

    83   

    84   }

    85 }