Lib/test/test_string.py

import unittest, string
from test import test_support, string_tests
from UserList import UserList

class StringTest(
    string_tests.CommonTest,
    string_tests.MixinStrStringUserStringTest
    ):

    type2test = str

    def checkequal(self, result, object, methodname, *args):
        realresult = getattr(string, methodname)(object, *args)
        self.assertEqual(
            result,
            realresult
        )

    def checkraises(self, exc, object, methodname, *args):
        self.assertRaises(
            exc,
            getattr(string, methodname),
            object,
            *args
        )

    def checkcall(self, object, methodname, *args):
        getattr(string, methodname)(object, *args)

    def test_join(self):
        # These are the same checks as in string_test.ObjectTest.test_join
        # but the argument order ist different
        self.checkequal('a b c d', ['a', 'b', 'c', 'd'], 'join', ' ')
        self.checkequal('abcd', ('a', 'b', 'c', 'd'), 'join', '')
        self.checkequal('w x y z', string_tests.Sequence(), 'join', ' ')
        self.checkequal('abc', ('abc',), 'join', 'a')
        self.checkequal('z', UserList(['z']), 'join', 'a')
        if test_support.have_unicode:
            self.checkequal(unicode('a.b.c'), ['a', 'b', 'c'], 'join', unicode('.'))
            self.checkequal(unicode('a.b.c'), [unicode('a'), 'b', 'c'], 'join', '.')
            self.checkequal(unicode('a.b.c'), ['a', unicode('b'), 'c'], 'join', '.')
            self.checkequal(unicode('a.b.c'), ['a', 'b', unicode('c')], 'join', '.')
            self.checkraises(TypeError, ['a', unicode('b'), 3], 'join', '.')
        for i in [5, 25, 125]:
            self.checkequal(
                ((('a' * i) + '-') * i)[:-1],
                ['a' * i] * i, 'join', '-')
            self.checkequal(
                ((('a' * i) + '-') * i)[:-1],
                ('a' * i,) * i, 'join', '-')

        self.checkraises(TypeError, string_tests.BadSeq1(), 'join', ' ')
        self.checkequal('a b c', string_tests.BadSeq2(), 'join', ' ')

    def test_bug1001011(self):
        # Make sure join returns a NEW object for single item sequences
        # involving a subclass
        # Make sure that it is of the appropriate type
        # Check the optimisation still occurs for standard objects
        class str_subclass(str): pass
        s1 = str_subclass('abcd')
        s2 = ''.join([s1])
        self.failIf(s1 is s2)
        self.assertEqual(type(s2), type(''))
        s3 = 'abcd'
        s4 = ''.join([s3])
        self.failUnless(s3 is s4)
        if test_support.have_unicode:
            class unicode_subclass(unicode): pass
            u1 = unicode_subclass(u'abcd')
            u2 = ''.join([u1])
            self.failIf(u1 is u2)
            self.assertEqual(type(u2), type(u''))
            u3 = u'abcd'
            u4 = ''.join([u3])
            self.failUnless(u3 is u4)

class ModuleTest(unittest.TestCase):

    def test_attrs(self):
        string.whitespace
        string.lowercase
        string.uppercase
        string.letters
        string.digits
        string.hexdigits
        string.octdigits
        string.punctuation
        string.printable

    def test_atoi(self):
        self.assertEqual(string.atoi(" 1 "), 1)
        self.assertRaises(ValueError, string.atoi, " 1x")
        self.assertRaises(ValueError, string.atoi, " x1 ")

    def test_atol(self):
        self.assertEqual(string.atol("  1  "), 1L)
        self.assertRaises(ValueError, string.atol, "  1x ")
        self.assertRaises(ValueError, string.atol, "  x1 ")

    def test_atof(self):
        self.assertAlmostEqual(string.atof("  1  "), 1.0)
        self.assertRaises(ValueError, string.atof, "  1x ")
        self.assertRaises(ValueError, string.atof, "  x1 ")

    def test_maketrans(self):
        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'

        self.assertEqual(string.maketrans('abc', 'xyz'), transtable)
        self.assertRaises(ValueError, string.maketrans, 'abc', 'xyzq')

    def test_capwords(self):
        self.assertEqual(string.capwords('abc def ghi'), 'Abc Def Ghi')
        self.assertEqual(string.capwords('abc\tdef\nghi'), 'Abc Def Ghi')
        self.assertEqual(string.capwords('abc\t   def  \nghi'), 'Abc Def Ghi')
        self.assertEqual(string.capwords('ABC DEF GHI'), 'Abc Def Ghi')
        self.assertEqual(string.capwords('ABC-DEF-GHI', '-'), 'Abc-Def-Ghi')
        self.assertEqual(string.capwords('ABC-def DEF-ghi GHI'), 'Abc-def Def-ghi Ghi')

def test_main():
    test_support.run_unittest(StringTest, ModuleTest)

if __name__ == "__main__":
    test_main()