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1 // |reftest| fails |
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2 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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3 /* This Source Code Form is subject to the terms of the Mozilla Public |
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4 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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6 |
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7 /* |
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8 * Date: 2001-07-15 |
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9 * |
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10 * SUMMARY: Testing Number.prototype.toExponential(fractionDigits) |
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11 * See EMCA 262 Edition 3 Section 15.7.4.6 |
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12 * |
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13 * Also see http://bugzilla.mozilla.org/show_bug.cgi?id=90551 |
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14 * |
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15 */ |
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16 //----------------------------------------------------------------------------- |
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17 var UBound = 0; |
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18 var BUGNUMBER = '(none)'; |
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19 var summary = 'Testing Number.prototype.toExponential(fractionDigits)'; |
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20 var cnIsRangeError = 'instanceof RangeError'; |
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21 var cnNotRangeError = 'NOT instanceof RangeError'; |
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22 var cnNoErrorCaught = 'NO ERROR CAUGHT...'; |
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23 var status = ''; |
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24 var statusitems = []; |
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25 var actual = ''; |
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26 var actualvalues = []; |
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27 var expect= ''; |
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28 var expectedvalues = []; |
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29 var testNum = 77.1234; |
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30 |
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31 |
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32 status = 'Section A of test: no error intended!'; |
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33 actual = testNum.toExponential(4); |
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34 expect = '7.7123e+1'; |
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35 captureThis(); |
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36 |
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37 status = 'Section B of test: Infinity.toExponential() with out-of-range fractionDigits'; |
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38 actual = Number.POSITIVE_INFINITY.toExponential(-3); |
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39 expect = 'Infinity'; |
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40 captureThis(); |
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41 |
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42 status = 'Section C of test: -Infinity.toExponential() with out-of-range fractionDigits'; |
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43 actual = Number.NEGATIVE_INFINITY.toExponential(-3); |
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44 expect = '-Infinity'; |
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45 captureThis(); |
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46 |
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47 status = 'Section D of test: NaN.toExponential() with out-of-range fractionDigits'; |
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48 actual = Number.NaN.toExponential(-3); |
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49 expect = 'NaN'; |
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50 captureThis(); |
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51 |
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52 |
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53 /////////////////////////// OOPS.... /////////////////////////////// |
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54 /************************************************************************* |
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55 * 15.7.4.6 Number.prototype.toExponential(fractionDigits) |
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56 * |
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57 * An implementation is permitted to extend the behaviour of toExponential |
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58 * for values of fractionDigits less than 0 or greater than 20. In this |
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59 * case toExponential would not necessarily throw RangeError for such values. |
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60 |
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61 status = 'Section B of test: expect RangeError because fractionDigits < 0'; |
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62 actual = catchError('testNum.toExponential(-4)'); |
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63 expect = cnIsRangeError; |
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64 captureThis(); |
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65 |
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66 status = 'Section C of test: expect RangeError because fractionDigits > 20 '; |
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67 actual = catchError('testNum.toExponential(21)'); |
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68 expect = cnIsRangeError; |
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69 captureThis(); |
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70 *************************************************************************/ |
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71 |
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72 |
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73 |
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74 //----------------------------------------------------------------------------- |
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75 test(); |
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76 //----------------------------------------------------------------------------- |
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77 |
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78 |
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79 function captureThis() |
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80 { |
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81 statusitems[UBound] = status; |
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82 actualvalues[UBound] = actual; |
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83 expectedvalues[UBound] = expect; |
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84 UBound++; |
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85 } |
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86 |
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87 |
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88 function test() |
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89 { |
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90 enterFunc ('test'); |
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91 printBugNumber(BUGNUMBER); |
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92 printStatus (summary); |
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93 |
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94 for (var i = 0; i < UBound; i++) |
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95 { |
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96 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); |
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97 } |
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98 |
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99 exitFunc ('test'); |
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100 } |
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101 |
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102 |
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103 function catchError(sEval) |
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104 { |
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105 try {eval(sEval);} |
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106 catch(e) {return isRangeError(e);} |
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107 return cnNoErrorCaught; |
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108 } |
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109 |
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110 |
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111 function isRangeError(obj) |
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112 { |
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113 if (obj instanceof RangeError) |
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114 return cnIsRangeError; |
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115 return cnNotRangeError; |
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116 } |