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/Lib/test/test_string.py

http://unladen-swallow.googlecode.com/
Python | 217 lines | 209 code | 6 blank | 2 comment | 1 complexity | e38a94e45aecc6273bcc9af567e164a4 MD5 | raw file
  1import unittest, string
  2from test import test_support, string_tests
  3from UserList import UserList
  4
  5class StringTest(
  6    string_tests.CommonTest,
  7    string_tests.MixinStrStringUserStringTest
  8    ):
  9
 10    type2test = str
 11
 12    def checkequal(self, result, object, methodname, *args):
 13        realresult = getattr(string, methodname)(object, *args)
 14        self.assertEqual(
 15            result,
 16            realresult
 17        )
 18
 19    def checkraises(self, exc, object, methodname, *args):
 20        self.assertRaises(
 21            exc,
 22            getattr(string, methodname),
 23            object,
 24            *args
 25        )
 26
 27    def checkcall(self, object, methodname, *args):
 28        getattr(string, methodname)(object, *args)
 29
 30    def test_join(self):
 31        # These are the same checks as in string_test.ObjectTest.test_join
 32        # but the argument order ist different
 33        self.checkequal('a b c d', ['a', 'b', 'c', 'd'], 'join', ' ')
 34        self.checkequal('abcd', ('a', 'b', 'c', 'd'), 'join', '')
 35        self.checkequal('w x y z', string_tests.Sequence(), 'join', ' ')
 36        self.checkequal('abc', ('abc',), 'join', 'a')
 37        self.checkequal('z', UserList(['z']), 'join', 'a')
 38        if test_support.have_unicode:
 39            self.checkequal(unicode('a.b.c'), ['a', 'b', 'c'], 'join', unicode('.'))
 40            self.checkequal(unicode('a.b.c'), [unicode('a'), 'b', 'c'], 'join', '.')
 41            self.checkequal(unicode('a.b.c'), ['a', unicode('b'), 'c'], 'join', '.')
 42            self.checkequal(unicode('a.b.c'), ['a', 'b', unicode('c')], 'join', '.')
 43            self.checkraises(TypeError, ['a', unicode('b'), 3], 'join', '.')
 44        for i in [5, 25, 125]:
 45            self.checkequal(
 46                ((('a' * i) + '-') * i)[:-1],
 47                ['a' * i] * i, 'join', '-')
 48            self.checkequal(
 49                ((('a' * i) + '-') * i)[:-1],
 50                ('a' * i,) * i, 'join', '-')
 51
 52        self.checkraises(TypeError, string_tests.BadSeq1(), 'join', ' ')
 53        self.checkequal('a b c', string_tests.BadSeq2(), 'join', ' ')
 54        try:
 55            def f():
 56                yield 4 + ""
 57            self.fixtype(' ').join(f())
 58        except TypeError, e:
 59            if '+' not in str(e):
 60                self.fail('join() ate exception message')
 61        else:
 62            self.fail('exception not raised')
 63
 64
 65
 66
 67class ModuleTest(unittest.TestCase):
 68
 69    def test_attrs(self):
 70        string.whitespace
 71        string.lowercase
 72        string.uppercase
 73        string.letters
 74        string.digits
 75        string.hexdigits
 76        string.octdigits
 77        string.punctuation
 78        string.printable
 79
 80    def test_atoi(self):
 81        self.assertEqual(string.atoi(" 1 "), 1)
 82        self.assertRaises(ValueError, string.atoi, " 1x")
 83        self.assertRaises(ValueError, string.atoi, " x1 ")
 84
 85    def test_atol(self):
 86        self.assertEqual(string.atol("  1  "), 1L)
 87        self.assertRaises(ValueError, string.atol, "  1x ")
 88        self.assertRaises(ValueError, string.atol, "  x1 ")
 89
 90    def test_atof(self):
 91        self.assertAlmostEqual(string.atof("  1  "), 1.0)
 92        self.assertRaises(ValueError, string.atof, "  1x ")
 93        self.assertRaises(ValueError, string.atof, "  x1 ")
 94
 95    def test_maketrans(self):
 96        transtable = '\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'
 97
 98        self.assertEqual(string.maketrans('abc', 'xyz'), transtable)
 99        self.assertRaises(ValueError, string.maketrans, 'abc', 'xyzq')
100
101    def test_capwords(self):
102        self.assertEqual(string.capwords('abc def ghi'), 'Abc Def Ghi')
103        self.assertEqual(string.capwords('abc\tdef\nghi'), 'Abc Def Ghi')
104        self.assertEqual(string.capwords('abc\t   def  \nghi'), 'Abc Def Ghi')
105        self.assertEqual(string.capwords('ABC DEF GHI'), 'Abc Def Ghi')
106        self.assertEqual(string.capwords('ABC-DEF-GHI', '-'), 'Abc-Def-Ghi')
107        self.assertEqual(string.capwords('ABC-def DEF-ghi GHI'), 'Abc-def Def-ghi Ghi')
108        self.assertEqual(string.capwords('   aBc  DeF   '), 'Abc Def')
109        self.assertEqual(string.capwords('\taBc\tDeF\t'), 'Abc Def')
110        self.assertEqual(string.capwords('\taBc\tDeF\t', '\t'), '\tAbc\tDef\t')
111
112    def test_formatter(self):
113        fmt = string.Formatter()
114        self.assertEqual(fmt.format("foo"), "foo")
115
116        self.assertEqual(fmt.format("foo{0}", "bar"), "foobar")
117        self.assertEqual(fmt.format("foo{1}{0}-{1}", "bar", 6), "foo6bar-6")
118        self.assertEqual(fmt.format("-{arg!r}-", arg='test'), "-'test'-")
119
120        # override get_value ############################################
121        class NamespaceFormatter(string.Formatter):
122            def __init__(self, namespace={}):
123                string.Formatter.__init__(self)
124                self.namespace = namespace
125
126            def get_value(self, key, args, kwds):
127                if isinstance(key, str):
128                    try:
129                        # Check explicitly passed arguments first
130                        return kwds[key]
131                    except KeyError:
132                        return self.namespace[key]
133                else:
134                    string.Formatter.get_value(key, args, kwds)
135
136        fmt = NamespaceFormatter({'greeting':'hello'})
137        self.assertEqual(fmt.format("{greeting}, world!"), 'hello, world!')
138
139
140        # override format_field #########################################
141        class CallFormatter(string.Formatter):
142            def format_field(self, value, format_spec):
143                return format(value(), format_spec)
144
145        fmt = CallFormatter()
146        self.assertEqual(fmt.format('*{0}*', lambda : 'result'), '*result*')
147
148
149        # override convert_field ########################################
150        class XFormatter(string.Formatter):
151            def convert_field(self, value, conversion):
152                if conversion == 'x':
153                    return None
154                return super(XFormatter, self).convert_field(value, conversion)
155
156        fmt = XFormatter()
157        self.assertEqual(fmt.format("{0!r}:{0!x}", 'foo', 'foo'), "'foo':None")
158
159
160        # override parse ################################################
161        class BarFormatter(string.Formatter):
162            # returns an iterable that contains tuples of the form:
163            # (literal_text, field_name, format_spec, conversion)
164            def parse(self, format_string):
165                for field in format_string.split('|'):
166                    if field[0] == '+':
167                        # it's markup
168                        field_name, _, format_spec = field[1:].partition(':')
169                        yield '', field_name, format_spec, None
170                    else:
171                        yield field, None, None, None
172
173        fmt = BarFormatter()
174        self.assertEqual(fmt.format('*|+0:^10s|*', 'foo'), '*   foo    *')
175
176        # test all parameters used
177        class CheckAllUsedFormatter(string.Formatter):
178            def check_unused_args(self, used_args, args, kwargs):
179                # Track which arguments actuallly got used
180                unused_args = set(kwargs.keys())
181                unused_args.update(range(0, len(args)))
182
183                for arg in used_args:
184                    unused_args.remove(arg)
185
186                if unused_args:
187                    raise ValueError("unused arguments")
188
189        fmt = CheckAllUsedFormatter()
190        self.assertEqual(fmt.format("{0}", 10), "10")
191        self.assertEqual(fmt.format("{0}{i}", 10, i=100), "10100")
192        self.assertEqual(fmt.format("{0}{i}{1}", 10, 20, i=100), "1010020")
193        self.assertRaises(ValueError, fmt.format, "{0}{i}{1}", 10, 20, i=100, j=0)
194        self.assertRaises(ValueError, fmt.format, "{0}", 10, 20)
195        self.assertRaises(ValueError, fmt.format, "{0}", 10, 20, i=100)
196        self.assertRaises(ValueError, fmt.format, "{i}", 10, 20, i=100)
197
198        # Alternate formatting is not supported
199        self.assertRaises(ValueError, format, '', '#')
200        self.assertRaises(ValueError, format, '', '#20')
201
202class BytesAliasTest(unittest.TestCase):
203
204    def test_builtin(self):
205        self.assert_(str is bytes)
206
207    def test_syntax(self):
208        self.assertEqual(b"spam", "spam")
209        self.assertEqual(br"egg\foo", "egg\\foo")
210        self.assert_(type(b""), str)
211        self.assert_(type(br""), str)
212
213def test_main():
214    test_support.run_unittest(StringTest, ModuleTest, BytesAliasTest)
215
216if __name__ == "__main__":
217    test_main()