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      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.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 }
    119