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/
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.
12 * The Original Code is mozilla.org code.
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.
19 * Contributor(s): pschwartau@netscape.com
22 * SUMMARY: Testing Number.prototype.toPrecision(precision)
23 * See EMCA 262 Edition 3 Section 15.7.4.7
25 * Also see http://bugzilla.mozilla.org/show_bug.cgi?id=90551
28 //-----------------------------------------------------------------------------
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...';
38 var actualvalues = [];
40 var expectedvalues = [];
41 var testNum = 5.123456;
44 status = 'Section A of test: no error intended!';
45 actual = testNum.toPrecision(4);
50 /////////////////////////// OOPS.... ///////////////////////////////
51 /*************************************************************************
52 * 15.7.4.7 Number.prototype.toPrecision(precision)
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.
58 status = 'Section B of test: expect RangeError because precision < 1';
59 actual = catchError('testNum.toPrecision(0)');
60 expect = cnIsRangeError;
63 status = 'Section C of test: expect RangeError because precision < 1';
64 actual = catchError('testNum.toPrecision(-4)');
65 expect = cnIsRangeError;
68 status = 'Section D of test: expect RangeError because precision > 21 ';
69 actual = catchError('testNum.toPrecision(22)');
70 expect = cnIsRangeError;
72 *************************************************************************/
76 //-----------------------------------------------------------------------------
78 //-----------------------------------------------------------------------------
81 function captureThis()
83 statusitems[UBound] = status;
84 actualvalues[UBound] = actual;
85 expectedvalues[UBound] = expect;
94 printStatus (summary);
96 for (var i = 0; i < UBound; i++)
98 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
105 function catchError(sEval)
108 catch(e) {return isRangeError(e);}
109 return cnNoErrorCaught;
113 function isRangeError(obj)
115 if (obj instanceof RangeError)
116 return cnIsRangeError;
117 return cnNotRangeError;