Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_string.py @ 74135:9c19df6c8ea0 3.2

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News entry for Issue12798
author Senthil Kumaran <senthil@uthcode.com>
date Fri, 23 Dec 2011 11:11:21 +0800
parents cdd667e02fe3
children 24b449a77e88 6b627e121573
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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fe10ece8ba68 Port all string tests to PyUnit and share as much tests
Walter Dörwald <walter@livinglogic.de>
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1 import unittest, string
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2 from test import support
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3
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03440272028c SF Patch #1007087: Return new string for single subclass joins (Bug #1001011)
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4
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5 class ModuleTest(unittest.TestCase):
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6
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7 def test_attrs(self):
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8 string.whitespace
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9 string.ascii_lowercase
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10 string.ascii_uppercase
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11 string.ascii_letters
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12 string.digits
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13 string.hexdigits
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14 string.octdigits
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15 string.punctuation
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16 string.printable
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17
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18 def test_capwords(self):
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19 self.assertEqual(string.capwords('abc def ghi'), 'Abc Def Ghi')
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20 self.assertEqual(string.capwords('abc\tdef\nghi'), 'Abc Def Ghi')
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21 self.assertEqual(string.capwords('abc\t def \nghi'), 'Abc Def Ghi')
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22 self.assertEqual(string.capwords('ABC DEF GHI'), 'Abc Def Ghi')
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23 self.assertEqual(string.capwords('ABC-DEF-GHI', '-'), 'Abc-Def-Ghi')
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24 self.assertEqual(string.capwords('ABC-def DEF-ghi GHI'), 'Abc-def Def-ghi Ghi')
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25 self.assertEqual(string.capwords(' aBc DeF '), 'Abc Def')
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26 self.assertEqual(string.capwords('\taBc\tDeF\t'), 'Abc Def')
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27 self.assertEqual(string.capwords('\taBc\tDeF\t', '\t'), '\tAbc\tDef\t')
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28
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29 def test_formatter(self):
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30 fmt = string.Formatter()
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31 self.assertEqual(fmt.format("foo"), "foo")
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32
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33 self.assertEqual(fmt.format("foo{0}", "bar"), "foobar")
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34 self.assertEqual(fmt.format("foo{1}{0}-{1}", "bar", 6), "foo6bar-6")
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35 self.assertEqual(fmt.format("-{arg!r}-", arg='test'), "-'test'-")
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36
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37 # override get_value ############################################
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38 class NamespaceFormatter(string.Formatter):
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39 def __init__(self, namespace={}):
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40 string.Formatter.__init__(self)
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41 self.namespace = namespace
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42
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43 def get_value(self, key, args, kwds):
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44 if isinstance(key, str):
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45 try:
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46 # Check explicitly passed arguments first
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47 return kwds[key]
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48 except KeyError:
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49 return self.namespace[key]
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50 else:
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51 string.Formatter.get_value(key, args, kwds)
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52
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53 fmt = NamespaceFormatter({'greeting':'hello'})
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54 self.assertEqual(fmt.format("{greeting}, world!"), 'hello, world!')
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56
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57 # override format_field #########################################
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58 class CallFormatter(string.Formatter):
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59 def format_field(self, value, format_spec):
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60 return format(value(), format_spec)
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61
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62 fmt = CallFormatter()
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63 self.assertEqual(fmt.format('*{0}*', lambda : 'result'), '*result*')
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64
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65
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66 # override convert_field ########################################
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67 class XFormatter(string.Formatter):
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68 def convert_field(self, value, conversion):
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69 if conversion == 'x':
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70 return None
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71 return super(XFormatter, self).convert_field(value, conversion)
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72
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73 fmt = XFormatter()
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74 self.assertEqual(fmt.format("{0!r}:{0!x}", 'foo', 'foo'), "'foo':None")
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75
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76
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77 # override parse ################################################
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78 class BarFormatter(string.Formatter):
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79 # returns an iterable that contains tuples of the form:
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80 # (literal_text, field_name, format_spec, conversion)
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81 def parse(self, format_string):
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82 for field in format_string.split('|'):
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83 if field[0] == '+':
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84 # it's markup
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85 field_name, _, format_spec = field[1:].partition(':')
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86 yield '', field_name, format_spec, None
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87 else:
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88 yield field, None, None, None
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89
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90 fmt = BarFormatter()
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91 self.assertEqual(fmt.format('*|+0:^10s|*', 'foo'), '* foo *')
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92
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93 # test all parameters used
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94 class CheckAllUsedFormatter(string.Formatter):
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95 def check_unused_args(self, used_args, args, kwargs):
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96 # Track which arguments actually got used
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97 unused_args = set(kwargs.keys())
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98 unused_args.update(range(0, len(args)))
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99
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100 for arg in used_args:
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101 unused_args.remove(arg)
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102
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103 if unused_args:
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104 raise ValueError("unused arguments")
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105
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106 fmt = CheckAllUsedFormatter()
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107 self.assertEqual(fmt.format("{0}", 10), "10")
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108 self.assertEqual(fmt.format("{0}{i}", 10, i=100), "10100")
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109 self.assertEqual(fmt.format("{0}{i}{1}", 10, 20, i=100), "1010020")
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110 self.assertRaises(ValueError, fmt.format, "{0}{i}{1}", 10, 20, i=100, j=0)
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111 self.assertRaises(ValueError, fmt.format, "{0}", 10, 20)
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112 self.assertRaises(ValueError, fmt.format, "{0}", 10, 20, i=100)
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113 self.assertRaises(ValueError, fmt.format, "{i}", 10, 20, i=100)
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114
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115 def test_vformat_assert(self):
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116 cls = string.Formatter()
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117 kwargs = {
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118 "i": 100
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119 }
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120 self.assertRaises(ValueError, cls._vformat,
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121 cls.format, "{0}", kwargs, set(), -2)
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122
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123 def test_convert_field(self):
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124 cls = string.Formatter()
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125 self.assertEqual(cls.format("{0!s}", 'foo'), 'foo')
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126 self.assertRaises(ValueError, cls.format, "{0!h}", 'foo')
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127
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128 def test_get_field(self):
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129 cls = string.Formatter()
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130 class MyClass:
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131 name = 'lumberjack'
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132 x = MyClass()
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133 self.assertEqual(cls.format("{0.name}", x), 'lumberjack')
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134
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135 lookup = ["eggs", "and", "spam"]
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136 self.assertEqual(cls.format("{0[2]}", lookup), 'spam')
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137
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138
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139 def test_main():
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140 support.run_unittest(ModuleTest)
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141
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142 if __name__ == "__main__":
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143 test_main()