tests/mozilla/js1_5/Exceptions/regress-121658.js

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  14 * The Original Code is JavaScript Engine testing utilities.
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  16 * The Initial Developer of the Original Code is Netscape Communications Corp.
  17 * Portions created by the Initial Developer are Copyright (C) 2002
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  20 * Contributor(s): timeless@mac.com,pschwartau@netscape.com
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  35 *
  36 *
  37 * Date:    24 Jan 2002
  38 * SUMMARY: "Too much recursion" errors should be safely caught by try...catch
  39 * See http://bugzilla.mozilla.org/show_bug.cgi?id=121658
  40 *
  41 * In the cases below, we expect i>0. The bug was filed because we were getting
  42 * i===0; i.e. |i| did not retain the value it had at the location of the error.
  43 *
  44 */
  45 //-----------------------------------------------------------------------------
  46 var UBound = 0;
  47 var bug = 121658;
  48 var msg = '"Too much recursion" errors should be safely caught by try...catch';
  49 var TEST_PASSED = 'i retained the value it had at location of error';
  50 var TEST_FAILED = 'i did NOT retain this value';
  51 var status = '';
  52 var statusitems = [];
  53 var actual = '';
  54 var actualvalues = [];
  55 var expect= '';
  56 var expectedvalues = [];
  57 var i;
  58
  59
  60 function f()
  61 {
  62   ++i;
  63
  64   // try...catch should catch the "too much recursion" error to ensue
  65   try
  66   {
  67     f();
  68   }
  69   catch(e)
  70   {
  71   }
  72 }
  73
  74 i=0;
  75 f();
  76 status = inSection(1);
  77 actual = (i>0);
  78 expect = true;
  79 addThis();
  80
  81
  82
  83 // Now try in function scope -
  84 function g()
  85 {
  86   f();
  87 }
  88
  89 i=0;
  90 g();
  91 status = inSection(2);
  92 actual = (i>0);
  93 expect = true;
  94 addThis();
  95
  96
  97
  98 // Now try in eval scope -
  99 var sEval = 'function h(){++i; try{h();} catch(e){}}; i=0; h();';
 100 eval(sEval);
 101 status = inSection(3);
 102 actual = (i>0);
 103 expect = true;
 104 addThis();
 105
 106
 107
 108 // Try in eval scope and mix functions up -
 109 sEval = 'function a(){++i; try{h();} catch(e){}}; i=0; a();';
 110 eval(sEval);
 111 status = inSection(4);
 112 actual = (i>0);
 113 expect = true;
 114 addThis();
 115
 116
 117
 118
 119 //-----------------------------------------------------------------------------
 120 test();
 121 //-----------------------------------------------------------------------------
 122
 123
 124
 125 function addThis()
 126 {
 127   statusitems[UBound] = status;
 128   actualvalues[UBound] = formatThis(actual);
 129   expectedvalues[UBound] = formatThis(expect);
 130   UBound++;
 131 }
 132
 133
 134 function formatThis(bool)
 135 {
 136   return bool? TEST_PASSED : TEST_FAILED;
 137 }
 138
 139
 140 function test()
 141 {
 142   enterFunc('test');
 143   printBugNumber(bug);
 144   printStatus(msg);
 145
 146   for (var i=0; i<UBound; i++)
 147   {
 148     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
 149   }
 150
 151   exitFunc ('test');
 152 }