| // |reftest| fails |
| /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| /* |
| * Date: 2001-07-15 |
| * |
| * SUMMARY: Testing Number.prototype.toPrecision(precision) |
| * See EMCA 262 Edition 3 Section 15.7.4.7 |
| * |
| * Also see http://bugzilla.mozilla.org/show_bug.cgi?id=90551 |
| * |
| */ |
| //----------------------------------------------------------------------------- |
| var UBound = 0; |
| var BUGNUMBER = '(none)'; |
| var summary = 'Testing Number.prototype.toPrecision(precision)'; |
| var cnIsRangeError = 'instanceof RangeError'; |
| var cnNotRangeError = 'NOT instanceof RangeError'; |
| var cnNoErrorCaught = 'NO ERROR CAUGHT...'; |
| var status = ''; |
| var statusitems = []; |
| var actual = ''; |
| var actualvalues = []; |
| var expect= ''; |
| var expectedvalues = []; |
| var testNum = 5.123456; |
| |
| |
| status = 'Section A of test: no error intended!'; |
| actual = testNum.toPrecision(4); |
| expect = '5.123'; |
| captureThis(); |
| |
| status = 'Section B of test: Infinity.toPrecision() with out-of-range fractionDigits'; |
| actual = Number.POSITIVE_INFINITY.toPrecision(-3); |
| expect = 'Infinity'; |
| captureThis(); |
| |
| status = 'Section C of test: -Infinity.toPrecision() with out-of-range fractionDigits'; |
| actual = Number.NEGATIVE_INFINITY.toPrecision(-3); |
| expect = '-Infinity'; |
| captureThis(); |
| |
| status = 'Section D of test: NaN.toPrecision() with out-of-range fractionDigits'; |
| actual = Number.NaN.toPrecision(-3); |
| expect = 'NaN'; |
| captureThis(); |
| |
| |
| /////////////////////////// OOPS.... /////////////////////////////// |
| /************************************************************************* |
| * 15.7.4.7 Number.prototype.toPrecision(precision) |
| * |
| * An implementation is permitted to extend the behaviour of toPrecision |
| * for values of precision less than 1 or greater than 21. In this |
| * case toPrecision would not necessarily throw RangeError for such values. |
| |
| status = 'Section B of test: expect RangeError because precision < 1'; |
| actual = catchError('testNum.toPrecision(0)'); |
| expect = cnIsRangeError; |
| captureThis(); |
| |
| status = 'Section C of test: expect RangeError because precision < 1'; |
| actual = catchError('testNum.toPrecision(-4)'); |
| expect = cnIsRangeError; |
| captureThis(); |
| |
| status = 'Section D of test: expect RangeError because precision > 21 '; |
| actual = catchError('testNum.toPrecision(22)'); |
| expect = cnIsRangeError; |
| captureThis(); |
| *************************************************************************/ |
| |
| |
| |
| //----------------------------------------------------------------------------- |
| test(); |
| //----------------------------------------------------------------------------- |
| |
| |
| function captureThis() |
| { |
| statusitems[UBound] = status; |
| actualvalues[UBound] = actual; |
| expectedvalues[UBound] = expect; |
| UBound++; |
| } |
| |
| |
| function test() |
| { |
| enterFunc ('test'); |
| printBugNumber(BUGNUMBER); |
| printStatus (summary); |
| |
| for (var i = 0; i < UBound; i++) |
| { |
| reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); |
| } |
| |
| exitFunc ('test'); |
| } |
| |
| |
| function catchError(sEval) |
| { |
| try {eval(sEval);} |
| catch(e) {return isRangeError(e);} |
| return cnNoErrorCaught; |
| } |
| |
| |
| function isRangeError(obj) |
| { |
| if (obj instanceof RangeError) |
| return cnIsRangeError; |
| return cnNotRangeError; |
| } |