Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_string.py @ 51749:1408feec0084 3.0

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Merged revisions 69798 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ................ r69798 | benjamin.peterson | 2009-02-19 22:02:38 -0600 (Thu, 19 Feb 2009) | 13 lines Merged revisions 69769,69776 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r69769 | georg.brandl | 2009-02-19 02:30:06 -0600 (Thu, 19 Feb 2009) | 1 line #5310, #3558: fix operator precedence table. ........ r69776 | georg.brandl | 2009-02-19 10:34:51 -0600 (Thu, 19 Feb 2009) | 2 lines #5317: update IronPython URL. ........ ................
author Benjamin Peterson <benjamin@python.org>
date Fri, 20 Feb 2009 04:05:32 +0000
parents 9c930a32cebb
children 4407e4d07084
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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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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_formatter(self):
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19 fmt = string.Formatter()
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20 self.assertEqual(fmt.format("foo"), "foo")
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21
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22 self.assertEqual(fmt.format("foo{0}", "bar"), "foobar")
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23 self.assertEqual(fmt.format("foo{1}{0}-{1}", "bar", 6), "foo6bar-6")
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24 self.assertEqual(fmt.format("-{arg!r}-", arg='test'), "-'test'-")
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25
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26 # override get_value ############################################
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27 class NamespaceFormatter(string.Formatter):
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28 def __init__(self, namespace={}):
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29 string.Formatter.__init__(self)
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30 self.namespace = namespace
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31
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32 def get_value(self, key, args, kwds):
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33 if isinstance(key, str):
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34 try:
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35 # Check explicitly passed arguments first
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36 return kwds[key]
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37 except KeyError:
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38 return self.namespace[key]
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39 else:
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40 string.Formatter.get_value(key, args, kwds)
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41
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42 fmt = NamespaceFormatter({'greeting':'hello'})
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43 self.assertEqual(fmt.format("{greeting}, world!"), 'hello, world!')
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45
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46 # override format_field #########################################
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47 class CallFormatter(string.Formatter):
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48 def format_field(self, value, format_spec):
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49 return format(value(), format_spec)
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50
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51 fmt = CallFormatter()
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52 self.assertEqual(fmt.format('*{0}*', lambda : 'result'), '*result*')
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54
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55 # override convert_field ########################################
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56 class XFormatter(string.Formatter):
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57 def convert_field(self, value, conversion):
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58 if conversion == 'x':
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59 return None
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60 return super(XFormatter, self).convert_field(value, conversion)
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61
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62 fmt = XFormatter()
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63 self.assertEqual(fmt.format("{0!r}:{0!x}", 'foo', 'foo'), "'foo':None")
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64
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65
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66 # override parse ################################################
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67 class BarFormatter(string.Formatter):
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68 # returns an iterable that contains tuples of the form:
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69 # (literal_text, field_name, format_spec, conversion)
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70 def parse(self, format_string):
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71 for field in format_string.split('|'):
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72 if field[0] == '+':
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73 # it's markup
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74 field_name, _, format_spec = field[1:].partition(':')
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75 yield '', field_name, format_spec, None
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76 else:
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77 yield field, None, None, None
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78
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79 fmt = BarFormatter()
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80 self.assertEqual(fmt.format('*|+0:^10s|*', 'foo'), '* foo *')
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81
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82 # test all parameters used
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83 class CheckAllUsedFormatter(string.Formatter):
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84 def check_unused_args(self, used_args, args, kwargs):
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85 # Track which arguments actuallly got used
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86 unused_args = set(kwargs.keys())
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87 unused_args.update(range(0, len(args)))
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88
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89 for arg in used_args:
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90 unused_args.remove(arg)
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91
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92 if unused_args:
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93 raise ValueError("unused arguments")
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94
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95 fmt = CheckAllUsedFormatter()
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96 self.assertEqual(fmt.format("{0}", 10), "10")
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97 self.assertEqual(fmt.format("{0}{i}", 10, i=100), "10100")
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98 self.assertEqual(fmt.format("{0}{i}{1}", 10, 20, i=100), "1010020")
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99 self.assertRaises(ValueError, fmt.format, "{0}{i}{1}", 10, 20, i=100, j=0)
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100 self.assertRaises(ValueError, fmt.format, "{0}", 10, 20)
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101 self.assertRaises(ValueError, fmt.format, "{0}", 10, 20, i=100)
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102 self.assertRaises(ValueError, fmt.format, "{i}", 10, 20, i=100)
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103
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104
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105 def test_maketrans(self):
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106 transtable = b'\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037 !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`xyzdefghijklmnopqrstuvwxyz{|}~\177\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377'
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107
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108 self.assertEqual(string.maketrans(b'abc', b'xyz'), transtable)
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109 self.assertRaises(ValueError, string.maketrans, b'abc', b'xyzq')
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110 self.assertRaises(TypeError, string.maketrans, 'abc', 'def')
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111
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112 def test_main():
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113 support.run_unittest(ModuleTest)
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114
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115 if __name__ == "__main__":
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116 test_main()