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.lang.Double;

    23 

    24 import gnu.testlet.TestHarness;

    25 import gnu.testlet.Testlet;

    26 

    27 /**

    28  * Some tests for the compare() method in the {@link Double} class.

    29  */

    30 public class compare implements Testlet 

    31 {

    32 

    33   /**

    34    * Runs the test using the specified harness.

    35    * 

    36    * @param harness  the test harness (<code>null</code> not permitted).

    37    */

    38   public void test(TestHarness harness)      

    39   {

    40     harness.check(Double.compare(0.0, 1.0) < 0);

    41     harness.check(Double.compare(0.0, 0.0) == 0);

    42     harness.check(Double.compare(1.0, 0.0) > 0);

    43 

    44     harness.check(Double.compare(Double.POSITIVE_INFINITY, 0.0) > 0);

    45     harness.check(Double.compare(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY) == 0);

    46     harness.check(Double.compare(0.0f, Double.POSITIVE_INFINITY) < 0);

    47 

    48     harness.check(Double.compare(Double.NEGATIVE_INFINITY, 0.0) < 0);

    49     harness.check(Double.compare(Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY) == 0);

    50     harness.check(Double.compare(0.0, Double.NEGATIVE_INFINITY) > 0);

    51 

    52     harness.check(Double.compare(Double.NaN, 0.0) > 0);

    53     harness.check(Double.compare(Double.NaN, Double.NaN) == 0);

    54     harness.check(Double.compare(0.0f, Double.NaN) < 0);

    55     

    56     harness.check(Double.compare(0.0, -0.0) > 0);

    57     harness.check(Double.compare(-0.0, 0.0) < 0);

    58   }

    59   

    60 }