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annotate babel/tests/numbers.py @ 245:d462423feeea

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Added initial support for scientific notation patterns.
author jonas
date Sat, 11 Aug 2007 11:31:05 +0000
parents ce3ad60145db
children f21b6e6a13a7
rev   line source
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1 # -*- coding: utf-8 -*-
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2 #
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3 # Copyright (C) 2007 Edgewall Software
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4 # All rights reserved.
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5 #
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6 # This software is licensed as described in the file COPYING, which
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7 # you should have received as part of this distribution. The terms
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8 # are also available at http://babel.edgewall.org/wiki/License.
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9 #
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10 # This software consists of voluntary contributions made by many
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11 # individuals. For the exact contribution history, see the revision
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12 # history and logs, available at http://babel.edgewall.org/log/.
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13
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14 try:
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15 from decimal import Decimal
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16 have_decimal = True
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17 except ImportError:
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18 have_decimal = False
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19
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20 import doctest
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21 import unittest
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22
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23 from babel import numbers
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24
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25
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26 class FormatDecimalTestCase(unittest.TestCase):
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27
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28 def test_patterns(self):
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29 self.assertEqual(numbers.format_decimal(12345, '##0',
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30 locale='en_US'), '12345')
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31 self.assertEqual(numbers.format_decimal(6.5, '0.00', locale='sv'),
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32 '6,50')
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33 self.assertEqual(numbers.format_decimal(10.0**20,
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34 '#.00', locale='en_US'),
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35 '100000000000000000000.00')
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36
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37 def test_subpatterns(self):
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38 self.assertEqual(numbers.format_decimal(-12345, '#,##0.##;-#',
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39 locale='en_US'), '-12,345')
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40 self.assertEqual(numbers.format_decimal(-12345, '#,##0.##;(#)',
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41 locale='en_US'), '(12,345)')
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42
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43 def test_default_rounding(self):
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44 """
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45 Testing Round-Half-Even (Banker's rounding)
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46
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47 A '5' is rounded to the closest 'even' number
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48 """
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49 self.assertEqual(numbers.format_decimal(5.5, '0', locale='sv'), '6')
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50 self.assertEqual(numbers.format_decimal(6.5, '0', locale='sv'), '6')
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51 self.assertEqual(numbers.format_decimal(6.5, '0', locale='sv'), '6')
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52 self.assertEqual(numbers.format_decimal(1.2325, locale='sv'), '1,232')
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53 self.assertEqual(numbers.format_decimal(1.2335, locale='sv'), '1,234')
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54
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55 def test_significant_digits(self):
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56 """Test significant digits patterns"""
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57 self.assertEqual(numbers.format_decimal(123004, '@@',locale='en_US'),
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58 '120000')
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59 self.assertEqual(numbers.format_decimal(1.12, '@', locale='sv'), '1')
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60 self.assertEqual(numbers.format_decimal(1.1, '@@', locale='sv'), '1,1')
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61 self.assertEqual(numbers.format_decimal(1.1, '@@@@@##', locale='sv'),
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62 '1,1000')
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63 self.assertEqual(numbers.format_decimal(0.0001, '@@@', locale='sv'),
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64 '0,000100')
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65 self.assertEqual(numbers.format_decimal(0.0001234, '@@@', locale='sv'),
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66 '0,000123')
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67 self.assertEqual(numbers.format_decimal(0.0001234, '@@@#',locale='sv'),
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68 '0,0001234')
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69 self.assertEqual(numbers.format_decimal(0.0001234, '@@@#',locale='sv'),
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70 '0,0001234')
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71 self.assertEqual(numbers.format_decimal(0.12345, '@@@',locale='sv'),
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72 '0,123')
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73 self.assertEqual(numbers.format_decimal(3.14159, '@@##',locale='sv'),
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74 '3,142')
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75 self.assertEqual(numbers.format_decimal(1.23004, '@@##',locale='sv'),
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76 '1,23')
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77 self.assertEqual(numbers.format_decimal(1230.04, '@@,@@',locale='en_US'),
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78 '12,30')
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79 self.assertEqual(numbers.format_decimal(123.41, '@@##',locale='en_US'),
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80 '123.4')
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81 self.assertEqual(numbers.format_decimal(1, '@@',locale='en_US'),
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82 '1.0')
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83 self.assertEqual(numbers.format_decimal(0, '@',locale='en_US'),
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84 '0')
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85 self.assertEqual(numbers.format_decimal(0.1, '@',locale='en_US'),
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86 '0.1')
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87 self.assertEqual(numbers.format_decimal(0.1, '@#',locale='en_US'),
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88 '0.1')
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89 self.assertEqual(numbers.format_decimal(0.1, '@@', locale='en_US'),
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90 '0.10')
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91
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92 if have_decimal:
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93 def test_decimals(self):
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94 """Test significant digits patterns"""
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95 self.assertEqual(numbers.format_decimal(Decimal('1.2345'),
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96 '#.00', locale='en_US'),
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97 '1.23')
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98 self.assertEqual(numbers.format_decimal(Decimal('1.2345000'),
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99 '#.00', locale='en_US'),
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100 '1.23')
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101 self.assertEqual(numbers.format_decimal(Decimal('1.2345000'),
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102 '@@', locale='en_US'),
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103 '1.2')
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104 self.assertEqual(numbers.format_decimal(Decimal('12345678901234567890.12345'),
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105 '#.00', locale='en_US'),
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106 '12345678901234567890.12')
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107
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108 def test_scientific_notation(self):
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109 fmt = numbers.format_scientific(0.1, '#E0', locale='en_US')
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110 self.assertEqual(fmt, '1E-1')
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111 fmt = numbers.format_scientific(0.01, '#E0', locale='en_US')
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112 self.assertEqual(fmt, '1E-2')
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113 fmt = numbers.format_scientific(10, '#E0', locale='en_US')
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114 self.assertEqual(fmt, '1E1')
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115 fmt = numbers.format_scientific(1234, '0.###E0', locale='en_US')
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116 self.assertEqual(fmt, '1.234E3')
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117 fmt = numbers.format_scientific(1234, '0.#E0', locale='en_US')
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118 self.assertEqual(fmt, '1.2E3')
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119 # Exponent grouping
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120 fmt = numbers.format_scientific(12345, '##0.####E0', locale='en_US')
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121 self.assertEqual(fmt, '12.345E3')
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122 # Minimum number of int digits
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123 fmt = numbers.format_scientific(12345, '00.###E0', locale='en_US')
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124 self.assertEqual(fmt, '12.345E3')
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125 fmt = numbers.format_scientific(-12345.6, '00.###E0', locale='en_US')
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126 self.assertEqual(fmt, '-12.346E3')
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127 fmt = numbers.format_scientific(-0.01234, '00.###E0', locale='en_US')
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128 self.assertEqual(fmt, '-12.34E-3')
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129 # Custom pattern suffic
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130 fmt = numbers.format_scientific(123.45, '#.##E0 m/s', locale='en_US')
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131 self.assertEqual(fmt, '1.23E2 m/s')
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132 # Exponent patterns
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133 fmt = numbers.format_scientific(123.45, '#.##E00 m/s', locale='en_US')
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134 self.assertEqual(fmt, '1.23E02 m/s')
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135 fmt = numbers.format_scientific(0.012345, '#.##E00 m/s', locale='en_US')
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136 self.assertEqual(fmt, '1.23E-02 m/s')
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137 fmt = numbers.format_scientific(12345, '#.##E+00 m/s', locale='en_US')
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138 self.assertEqual(fmt, '1.23E+04 m/s')
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139
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140
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141 def suite():
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142 suite = unittest.TestSuite()
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143 suite.addTest(doctest.DocTestSuite(numbers))
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144 suite.addTest(unittest.makeSuite(FormatDecimalTestCase))
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145 return suite
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146
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147 if __name__ == '__main__':
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148 unittest.main(defaultTest='suite')
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