tests/mozilla/ecma_3/Number/15.7.4.6-1.js

   1 /*
   2 * The contents of this file are subject to the Netscape Public
   3 * License Version 1.1 (the "License"); you may not use this file
   4 * except in compliance with the License. You may obtain a copy of
   5 * the License at http://www.mozilla.org/NPL/
   6 *
   7 * Software distributed under the License is distributed on an
   8 * "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either expressed
   9 * or implied. See the License for the specific language governing
  10 * rights and limitations under the License.
  11 *
  12 * The Original Code is mozilla.org code.
  13 *
  14 * The Initial Developer of the Original Code is Netscape
  15 * Communications Corporation.  Portions created by Netscape are
  16 * Copyright (C) 1998 Netscape Communications Corporation.
  17 * All Rights Reserved.
  18 *
  19 * Contributor(s): pschwartau@netscape.com
  20 * Date: 2001-07-15
  21 *
  22 * SUMMARY: Testing Number.prototype.toExponential(fractionDigits)
  23 * See EMCA 262 Edition 3 Section 15.7.4.6
  24 *
  25 * Also see http://bugzilla.mozilla.org/show_bug.cgi?id=90551
  26 *
  27 */
  28 //-----------------------------------------------------------------------------
  29 var UBound = 0;
  30 var bug = '(none)';
  31 var summary = 'Testing Number.prototype.toExponential(fractionDigits)';
  32 var cnIsRangeError = 'instanceof RangeError';
  33 var cnNotRangeError = 'NOT instanceof RangeError';
  34 var cnNoErrorCaught = 'NO ERROR CAUGHT...';
  35 var status = '';
  36 var statusitems = [];
  37 var actual = '';
  38 var actualvalues = [];
  39 var expect= '';
  40 var expectedvalues = [];
  41 var testNum = 77.1234;
  42
  43
  44 status = 'Section A of test: no error intended!';
  45 actual = testNum.toExponential(4);
  46 expect = '7.7123e+1';
  47 captureThis();
  48
  49
  50 ///////////////////////////    OOPS....    ///////////////////////////////
  51 /*************************************************************************
  52  * 15.7.4.6 Number.prototype.toExponential(fractionDigits)
  53  *
  54  * An implementation is permitted to extend the behaviour of toExponential
  55  * for values of fractionDigits less than 0 or greater than 20. In this
  56  * case toExponential would not necessarily throw RangeError for such values.
  57
  58 status = 'Section B of test: expect RangeError because fractionDigits < 0';
  59 actual = catchError('testNum.toExponential(-4)');
  60 expect = cnIsRangeError;
  61 captureThis();
  62
  63 status = 'Section C of test: expect RangeError because fractionDigits > 20 ';
  64 actual = catchError('testNum.toExponential(21)');
  65 expect = cnIsRangeError;
  66 captureThis();
  67 *************************************************************************/
  68
  69
  70
  71 //-----------------------------------------------------------------------------
  72 test();
  73 //-----------------------------------------------------------------------------
  74
  75
  76 function captureThis()
  77 {
  78   statusitems[UBound] = status;
  79   actualvalues[UBound] = actual;
  80   expectedvalues[UBound] = expect;
  81   UBound++;
  82 }
  83
  84
  85 function test()
  86 {
  87   enterFunc ('test');
  88   printBugNumber (bug);
  89   printStatus (summary);
  90
  91   for (var i = 0; i < UBound; i++)
  92   {
  93     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
  94   }
  95
  96   exitFunc ('test');
  97 }
  98
  99
 100 function catchError(sEval)
 101 {
 102   try {eval(sEval);}
 103   catch(e) {return isRangeError(e);}
 104   return cnNoErrorCaught;
 105 }
 106
 107
 108 function isRangeError(obj)
 109 {
 110   if (obj instanceof RangeError)
 111     return cnIsRangeError;
 112   return cnNotRangeError;
 113 }