117 lines
5.0 KiB
Python
117 lines
5.0 KiB
Python
import unittest, string
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from test import test_support
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class ModuleTest(unittest.TestCase):
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def test_attrs(self):
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string.whitespace
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string.ascii_lowercase
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string.ascii_uppercase
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string.ascii_letters
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string.digits
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string.hexdigits
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string.octdigits
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string.punctuation
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string.printable
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def test_formatter(self):
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fmt = string.Formatter()
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self.assertEqual(fmt.format("foo"), "foo")
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self.assertEqual(fmt.format("foo{0}", "bar"), "foobar")
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self.assertEqual(fmt.format("foo{1}{0}-{1}", "bar", 6), "foo6bar-6")
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self.assertEqual(fmt.format("-{arg!r}-", arg='test'), "-'test'-")
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# override get_value ############################################
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class NamespaceFormatter(string.Formatter):
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def __init__(self, namespace={}):
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string.Formatter.__init__(self)
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self.namespace = namespace
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def get_value(self, key, args, kwds):
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if isinstance(key, str):
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try:
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# Check explicitly passed arguments first
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return kwds[key]
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except KeyError:
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return self.namespace[key]
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else:
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string.Formatter.get_value(key, args, kwds)
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fmt = NamespaceFormatter({'greeting':'hello'})
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self.assertEqual(fmt.format("{greeting}, world!"), 'hello, world!')
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# override format_field #########################################
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class CallFormatter(string.Formatter):
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def format_field(self, value, format_spec):
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return format(value(), format_spec)
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fmt = CallFormatter()
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self.assertEqual(fmt.format('*{0}*', lambda : 'result'), '*result*')
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# override convert_field ########################################
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class XFormatter(string.Formatter):
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def convert_field(self, value, conversion):
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if conversion == 'x':
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return None
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return super(XFormatter, self).convert_field(value, conversion)
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fmt = XFormatter()
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self.assertEqual(fmt.format("{0!r}:{0!x}", 'foo', 'foo'), "'foo':None")
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# override parse ################################################
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class BarFormatter(string.Formatter):
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# returns an iterable that contains tuples of the form:
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# (literal_text, field_name, format_spec, conversion)
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def parse(self, format_string):
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for field in format_string.split('|'):
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if field[0] == '+':
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# it's markup
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field_name, _, format_spec = field[1:].partition(':')
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yield '', field_name, format_spec, None
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else:
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yield field, None, None, None
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fmt = BarFormatter()
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self.assertEqual(fmt.format('*|+0:^10s|*', 'foo'), '* foo *')
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# test all parameters used
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class CheckAllUsedFormatter(string.Formatter):
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def check_unused_args(self, used_args, args, kwargs):
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# Track which arguments actuallly got used
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unused_args = set(kwargs.keys())
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unused_args.update(range(0, len(args)))
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for arg in used_args:
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unused_args.remove(arg)
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if unused_args:
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raise ValueError("unused arguments")
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fmt = CheckAllUsedFormatter()
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self.assertEqual(fmt.format("{0}", 10), "10")
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self.assertEqual(fmt.format("{0}{i}", 10, i=100), "10100")
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self.assertEqual(fmt.format("{0}{i}{1}", 10, 20, i=100), "1010020")
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self.assertRaises(ValueError, fmt.format, "{0}{i}{1}", 10, 20, i=100, j=0)
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self.assertRaises(ValueError, fmt.format, "{0}", 10, 20)
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self.assertRaises(ValueError, fmt.format, "{0}", 10, 20, i=100)
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self.assertRaises(ValueError, fmt.format, "{i}", 10, 20, i=100)
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def test_maketrans(self):
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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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self.assertEqual(string.maketrans(b'abc', b'xyz'), transtable)
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self.assertRaises(ValueError, string.maketrans, b'abc', b'xyzq')
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self.assertRaises(TypeError, string.maketrans, 'abc', 'def')
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def test_main():
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test_support.run_unittest(ModuleTest)
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if __name__ == "__main__":
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test_main()
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