tests/mozilla/ecma_3/Exceptions/15.11.4.4-1.js

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  14 * The Original Code is JavaScript Engine testing utilities.
  15 *
  16 * The Initial Developer of the Original Code is Netscape Communications Corp.
  17 * Portions created by the Initial Developer are Copyright (C) 2001
  18 * the Initial Developer. All Rights Reserved.
  19 *
  20 * Contributors: d-russo@ti.com, pschwartau@netscape.com, joerg.schaible@gmx.de
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  35 *
  36 *
  37 * Date:    22 Jan 2002
  38 * SUMMARY: Testing Error.prototype.toString()
  39 *
  40 * Revised: 25 Nov 2002
  41 * See http://bugzilla.mozilla.org/show_bug.cgi?id=181909
  42 *
  43 * Note that ECMA-262 3rd Edition Final, Section 15.11.4.4 states that
  44 * Error.prototype.toString() returns an implementation-dependent string.
  45 * Therefore any testcase on this property is somewhat arbitrary.
  46 *
  47 * However, d-russo@ti.com pointed out that Rhino was returning this:
  48 *
  49 *               js> err = new Error()
  50 *               undefined: undefined
  51 *
  52 *               js> err = new Error("msg")
  53 *               undefined: msg
  54 *
  55 *
  56 * We expect Rhino to return what SpiderMonkey currently does:
  57 *
  58 *               js> err = new Error()
  59 *               Error
  60 *
  61 *               js> err = new Error("msg")
  62 *               Error: msg
  63 *
  64 *
  65 * i.e. we expect err.toString() === err.name if err.message is not defined;
  66 * otherwise, we expect err.toString() === err.name + ': ' + err.message.
  67 *
  68 * See also ECMA 15.11.4.2, 15.11.4.3
  69 */
  70 //-----------------------------------------------------------------------------
  71 var UBound = 0;
  72 var bug = '(none)';
  73 var summary = 'Testing Error.prototype.toString()';
  74 var status = '';
  75 var statusitems = [];
  76 var actual = '';
  77 var actualvalues = [];
  78 var expect= '';
  79 var expectedvalues = [];
  80 var EMPTY_STRING = '';
  81 var EXPECTED_FORMAT = 0;
  82
  83
  84 status = inSection(1);
  85 var err1 = new Error('msg1');
  86 actual = examineThis(err1, 'msg1');
  87 expect = EXPECTED_FORMAT;
  88 addThis();
  89
  90 status = inSection(2);
  91 var err2 = new Error(err1);
  92 actual = examineThis(err2, err1);
  93 expect = EXPECTED_FORMAT;
  94 addThis();
  95
  96 status = inSection(3);
  97 var err3 = new Error();
  98 actual = examineThis(err3, EMPTY_STRING);
  99 expect = EXPECTED_FORMAT;
 100 addThis();
 101
 102 status = inSection(4);
 103 var err4 = new Error(EMPTY_STRING);
 104 actual = examineThis(err4, EMPTY_STRING);
 105 expect = EXPECTED_FORMAT;
 106 addThis();
 107
 108 // now generate a run-time error -
 109 status = inSection(5);
 110 try
 111 {
 112   eval('1=2');
 113 }
 114 catch(err5)
 115 {
 116  actual = examineThis(err5, '.*');
 117 }
 118 expect = EXPECTED_FORMAT;
 119 addThis();
 120
 121
 122
 123 //-----------------------------------------------------------------------------
 124 test();
 125 //-----------------------------------------------------------------------------
 126
 127
 128
 129 /*
 130  * Searches err.toString() for err.name + ':' + err.message,
 131  * with possible whitespace on each side of the colon sign.
 132  *
 133  * We allow for no colon in case err.message was not provided by the user.
 134  * In such a case, SpiderMonkey and Rhino currently set err.message = '',
 135  * as allowed for by ECMA 15.11.4.3. This makes |pattern| work in this case.
 136  *
 137  * If this is ever changed to a non-empty string, e.g. 'undefined',
 138  * you may have to modify |pattern| to take that into account -
 139  *
 140  */
 141 function examineThis(err, msg)
 142 {
 143   var pattern = err.name + '\\s*:?\\s*' + msg;
 144   return err.toString().search(RegExp(pattern));
 145 }
 146
 147
 148 function addThis()
 149 {
 150   statusitems[UBound] = status;
 151   actualvalues[UBound] = actual;
 152   expectedvalues[UBound] = expect;
 153   UBound++;
 154 }
 155
 156
 157 function test()
 158 {
 159   enterFunc ('test');
 160   printBugNumber (bug);
 161   printStatus (summary);
 162
 163   for (var i = 0; i < UBound; i++)
 164   {
 165     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
 166   }
 167
 168   exitFunc ('test');
 169 }