tests/mozilla/js1_2/String/slice.js

   1 /* The contents of this file are subject to the Netscape Public
   2  * License Version 1.1 (the "License"); you may not use this file
   3  * except in compliance with the License. You may obtain a copy of
   4  * the License at http://www.mozilla.org/NPL/
   5  *
   6  * Software distributed under the License is distributed on an "AS
   7  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   8  * implied. See the License for the specific language governing
   9  * rights and limitations under the License.
  10  *
  11  * The Original Code is Mozilla Communicator client code, released March
  12  * 31, 1998.
  13  *
  14  * The Initial Developer of the Original Code is Netscape Communications
  15  * Corporation. Portions created by Netscape are
  16  * Copyright (C) 1998 Netscape Communications Corporation. All
  17  * Rights Reserved.
  18  *
  19  * Contributor(s):
  20  *
  21  */
  22 /**
  23         Filename:     slice.js
  24         Description:  'This tests the String object method: slice'
  25
  26         Author:       Nick Lerissa
  27         Date:         Fri Feb 13 09:58:28 PST 1998
  28 */
  29
  30         var SECTION = 'As described in Netscape doc "Whats new in JavaScript 1.2"';
  31         var VERSION = 'no version';
  32     startTest();
  33         var TITLE = 'String.slice';
  34
  35         writeHeaderToLog('Executing script: slice.js');
  36         writeHeaderToLog( SECTION + " "+ TITLE);
  37
  38         var count = 0;
  39         var testcases = new Array();
  40
  41
  42         function myStringSlice(a, from, to)
  43         {
  44             var from2        = from;
  45             var to2          = to;
  46             var returnString = new String("");
  47             var i;
  48
  49             if (from2 < 0) from2 = a.length + from;
  50             if (to2 < 0)   to2   = a.length + to;
  51
  52             if ((to2 > from2)&&(to2 > 0)&&(from2 < a.length))
  53             {
  54                 if (from2 < 0)        from2 = 0;
  55                 if (to2 > a.length) to2 = a.length;
  56
  57                 for (i = from2; i < to2; ++i) returnString += a.charAt(i);
  58             }
  59             return returnString;
  60         }
  61
  62         // This function tests the slice command on a String
  63         // passed in. The arguments passed into slice range in
  64         // value from -5 to the length of the array + 4. Every
  65         // combination of the two arguments is tested. The expected
  66         // result of the slice(...) method is calculated and
  67         // compared to the actual result from the slice(...) method.
  68         // If the Strings are not similar false is returned.
  69         function exhaustiveStringSliceTest(testname, a)
  70         {
  71             var x = 0;
  72             var y = 0;
  73             var errorMessage;
  74             var reason = "";
  75             var passed = true;
  76
  77             for (x = -(2 + a.length); x <= (2 + a.length); x++)
  78                 for (y = (2 + a.length); y >= -(2 + a.length); y--)
  79                 {
  80                     var b  = a.slice(x,y);
  81                     var c = myStringSlice(a,x,y);
  82
  83                     if (String(b) != String(c))
  84                     {
  85                         errorMessage =
  86                             "ERROR: 'TEST FAILED' ERROR: 'TEST FAILED' ERROR: 'TEST FAILED'\n" +
  87                             "            test: " + "a.slice(" + x + "," + y + ")\n" +
  88                             "               a: " + String(a) + "\n" +
  89                             "   actual result: " + String(b) + "\n" +
  90                             " expected result: " + String(c) + "\n";
  91                         writeHeaderToLog(errorMessage);
  92                         reason = reason + errorMessage;
  93                         passed = false;
  94                     }
  95                 }
  96             var testCase = new TestCase(SECTION, testname, true, passed);
  97             if (passed == false)
  98                 testCase.reason = reason;
  99             return testCase;
 100         }
 101
 102         var a = new String("abcdefghijklmnopqrstuvwxyz1234567890");
 103         var b = new String("this is a test string");
 104
 105         testcases[count++] = exhaustiveStringSliceTest("exhaustive String.slice test 1", a);
 106         testcases[count++] = exhaustiveStringSliceTest("exhaustive String.slice test 2", b);
 107
 108         function test()
 109         {
 110            for ( tc=0; tc < testcases.length; tc++ ) {
 111                 testcases[tc].passed = writeTestCaseResult(
 112                 testcases[tc].expect,
 113                 testcases[tc].actual,
 114                 testcases[tc].description +" = "+
 115                 testcases[tc].actual );
 116                 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
 117            }
 118            stopTest();
 119            return ( testcases );
 120         }
 121
 122         test();
 123