Home | History | Annotate | Download | only in Number 
      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 (at) 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 }
    114