tests/mozilla/ecma_3/Number/15.7.4.7-1.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.toPrecision(precision)
  23 * See EMCA 262 Edition 3 Section 15.7.4.7
  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.toPrecision(precision)';
  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 = 5.123456;
  42
  43
  44 status = 'Section A of test: no error intended!';
  45 actual = testNum.toPrecision(4);
  46 expect = '5.123';
  47 captureThis();
  48
  49
  50 ///////////////////////////    OOPS....    ///////////////////////////////
  51 /*************************************************************************
  52  * 15.7.4.7 Number.prototype.toPrecision(precision)
  53  *
  54  * An implementation is permitted to extend the behaviour of toPrecision
  55  * for values of precision less than 1 or greater than 21. In this
  56  * case toPrecision would not necessarily throw RangeError for such values.
  57
  58 status = 'Section B of test: expect RangeError because precision < 1';
  59 actual = catchError('testNum.toPrecision(0)');
  60 expect = cnIsRangeError;
  61 captureThis();
  62
  63 status = 'Section C of test: expect RangeError because precision < 1';
  64 actual = catchError('testNum.toPrecision(-4)');
  65 expect = cnIsRangeError;
  66 captureThis();
  67
  68 status = 'Section D of test: expect RangeError because precision > 21 ';
  69 actual = catchError('testNum.toPrecision(22)');
  70 expect = cnIsRangeError;
  71 captureThis();
  72 *************************************************************************/
  73
  74
  75
  76 //-----------------------------------------------------------------------------
  77 test();
  78 //-----------------------------------------------------------------------------
  79
  80
  81 function captureThis()
  82 {
  83   statusitems[UBound] = status;
  84   actualvalues[UBound] = actual;
  85   expectedvalues[UBound] = expect;
  86   UBound++;
  87 }
  88
  89
  90 function test()
  91 {
  92   enterFunc ('test');
  93   printBugNumber (bug);
  94   printStatus (summary);
  95
  96   for (var i = 0; i < UBound; i++)
  97   {
  98     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
  99   }
 100
 101   exitFunc ('test');
 102 }
 103
 104
 105 function catchError(sEval)
 106 {
 107   try {eval(sEval);}
 108   catch(e) {return isRangeError(e);}
 109   return cnNoErrorCaught;
 110 }
 111
 112
 113 function isRangeError(obj)
 114 {
 115   if (obj instanceof RangeError)
 116     return cnIsRangeError;
 117   return cnNotRangeError;
 118 }