/* -*- 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; }