/External.LCA_RESTRICTED/Languages/IronPython/27/Lib/test/string_tests.py

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"""
Common tests shared by test_str, test_unicode, test_userstring and test_string.
"""

import unittest, string, sys, struct
from test import test_support
from UserList import UserList

class Sequence:
    def __init__(self, seq='wxyz'): self.seq = seq
    def __len__(self): return len(self.seq)
    def __getitem__(self, i): return self.seq[i]

class BadSeq1(Sequence):
    def __init__(self): self.seq = [7, 'hello', 123L]

class BadSeq2(Sequence):
    def __init__(self): self.seq = ['a', 'b', 'c']
    def __len__(self): return 8

class CommonTest(unittest.TestCase):
    # This testcase contains test that can be used in all
    # stringlike classes. Currently this is str, unicode
    # UserString and the string module.

    # The type to be tested
    # Change in subclasses to change the behaviour of fixtesttype()
    type2test = None

    # All tests pass their arguments to the testing methods
    # as str objects. fixtesttype() can be used to propagate
    # these arguments to the appropriate type
    def fixtype(self, obj):
        if isinstance(obj, str):
            return self.__class__.type2test(obj)
        elif isinstance(obj, list):
            return [self.fixtype(x) for x in obj]
        elif isinstance(obj, tuple):
            return tuple([self.fixtype(x) for x in obj])
        elif isinstance(obj, dict):
            return dict([
               (self.fixtype(key), self.fixtype(value))
               for (key, value) in obj.iteritems()
            ])
        else:
            return obj

    def test_fixtype(self):
        self.assertIs(type(self.fixtype("123")), self.type2test)

    # check that object.method(*args) returns result
    def checkequal(self, result, object, methodname, *args):
        result = self.fixtype(result)
        object = self.fixtype(object)
        args = self.fixtype(args)
        realresult = getattr(object, methodname)(*args)
        self.assertEqual(
            result,
            realresult
        )
        # if the original is returned make sure that
        # this doesn't happen with subclasses
        if object == realresult:
            class subtype(self.__class__.type2test):
                pass
            object = subtype(object)
            realresult = getattr(object, methodname)(*args)
            self.assertTrue(object is not realresult)

    # check that object.method(*args) raises exc
    def checkraises(self, exc, obj, methodname, *args):
        obj = self.fixtype(obj)
        args = self.fixtype(args)
        with self.assertRaises(exc) as cm:
            getattr(obj, methodname)(*args)
        self.assertNotEqual(cm.exception.args[0], '')

    # call object.method(*args) without any checks
    def checkcall(self, object, methodname, *args):
        object = self.fixtype(object)
        args = self.fixtype(args)
        getattr(object, methodname)(*args)

    def test_hash(self):
        # SF bug 1054139:  += optimization was not invalidating cached hash value
        a = self.type2test('DNSSEC')
        b = self.type2test('')
        for c in a:
            b += c
            hash(b)
        self.assertEqual(hash(a), hash(b))

    def test_capitalize(self):
        self.checkequal(' hello ', ' hello ', 'capitalize')
        self.checkequal('Hello ', 'Hello ','capitalize')
        self.checkequal('Hello ', 'hello ','capitalize')
        self.checkequal('Aaaa', 'aaaa', 'capitalize')
        self.checkequal('Aaaa', 'AaAa', 'capitalize')

        self.checkraises(TypeError, 'hello', 'capitalize', 42)

    def test_count(self):
        self.checkequal(3, 'aaa', 'count', 'a')
        self.checkequal(0, 'aaa', 'count', 'b')
        self.checkequal(3, 'aaa', 'count', 'a')
        self.checkequal(0, 'aaa', 'count', 'b')
        self.checkequal(3, 'aaa', 'count', 'a')
        self.checkequal(0, 'aaa', 'count', 'b')
        self.checkequal(0, 'aaa', 'count', 'b')
        self.checkequal(2, 'aaa', 'count', 'a', 1)
        self.checkequal(0, 'aaa', 'count', 'a', 10)
        self.checkequal(1, 'aaa', 'count', 'a', -1)
        self.checkequal(3, 'aaa', 'count', 'a', -10)
        self.checkequal(1, 'aaa', 'count', 'a', 0, 1)
        self.checkequal(3, 'aaa', 'count', 'a', 0, 10)
        self.checkequal(2, 'aaa', 'count', 'a', 0, -1)
        self.checkequal(0, 'aaa', 'count', 'a', 0, -10)
        self.checkequal(3, 'aaa', 'count', '', 1)
        self.checkequal(1, 'aaa', 'count', '', 3)
        self.checkequal(0, 'aaa', 'count', '', 10)
        self.checkequal(2, 'aaa', 'count', '', -1)
        self.checkequal(4, 'aaa', 'count', '', -10)

        self.checkequal(1, '', 'count', '')
        self.checkequal(0, '', 'count', '', 1, 1)
        self.checkequal(0, '', 'count', '', sys.maxint, 0)

        self.checkequal(0, '', 'count', 'xx')
        self.checkequal(0, '', 'count', 'xx', 1, 1)
        self.checkequal(0, '', 'count', 'xx', sys.maxint, 0)

        self.checkraises(TypeError, 'hello', 'count')
        self.checkraises(TypeError, 'hello', 'count', 42)

        # For a variety of combinations,
        #    verify that str.count() matches an equivalent function
        #    replacing all occurrences and then differencing the string lengths
        charset = ['', 'a', 'b']
        digits = 7
        base = len(charset)
        teststrings = set()
        for i in xrange(base ** digits):
            entry = []
            for j in xrange(digits):
                i, m = divmod(i, base)
                entry.append(charset[m])
            teststrings.add(''.join(entry))
        teststrings = list(teststrings)
        for i in teststrings:
            i = self.fixtype(i)
            n = len(i)
            for j in teststrings:
                r1 = i.count(j)
                if j:
                    r2, rem = divmod(n - len(i.replace(j, '')), len(j))
                else:
                    r2, rem = len(i)+1, 0
                if rem or r1 != r2:
                    self.assertEqual(rem, 0, '%s != 0 for %s' % (rem, i))
                    self.assertEqual(r1, r2, '%s != %s for %s' % (r1, r2, i))

    def test_find(self):
        self.checkequal(0, 'abcdefghiabc', 'find', 'abc')
        self.checkequal(9, 'abcdefghiabc', 'find', 'abc', 1)
        self.checkequal(-1, 'abcdefghiabc', 'find', 'def', 4)

        self.checkequal(0, 'abc', 'find', '', 0)
        self.checkequal(3, 'abc', 'find', '', 3)
        self.checkequal(-1, 'abc', 'find', '', 4)

        # to check the ability to pass None as defaults
        self.checkequal( 2, 'rrarrrrrrrrra', 'find', 'a')
        self.checkequal(12, 'rrarrrrrrrrra', 'find', 'a', 4)
        self.checkequal(-1, 'rrarrrrrrrrra', 'find', 'a', 4, 6)
        self.checkequal(12, 'rrarrrrrrrrra', 'find', 'a', 4, None)
        self.checkequal( 2, 'rrarrrrrrrrra', 'find', 'a', None, 6)

        self.checkraises(TypeError, 'hello', 'find')
        self.checkraises(TypeError, 'hello', 'find', 42)

        self.checkequal(0, '', 'find', '')
        self.checkequal(-1, '', 'find', '', 1, 1)
        self.checkequal(-1, '', 'find', '', sys.maxint, 0)

        self.checkequal(-1, '', 'find', 'xx')
        self.checkequal(-1, '', 'find', 'xx', 1, 1)
        self.checkequal(-1, '', 'find', 'xx', sys.maxint, 0)

        # issue 7458
        self.checkequal(-1, 'ab', 'find', 'xxx', sys.maxsize + 1, 0)

        # For a variety of combinations,
        #    verify that str.find() matches __contains__
        #    and that the found substring is really at that location
        charset = ['', 'a', 'b', 'c']
        digits = 5
        base = len(charset)
        teststrings = set()
        for i in xrange(base ** digits):
            entry = []
            for j in xrange(digits):
                i, m = divmod(i, base)
                entry.append(charset[m])
            teststrings.add(''.join(entry))
        teststrings = list(teststrings)
        for i in teststrings:
            i = self.fixtype(i)
            for j in teststrings:
                loc = i.find(j)
                r1 = (loc != -1)
                r2 = j in i
                self.assertEqual(r1, r2)
                if loc != -1:
                    self.assertEqual(i[loc:loc+len(j)], j)

    def test_rfind(self):
        self.checkequal(9,  'abcdefghiabc', 'rfind', 'abc')
        self.checkequal(12, 'abcdefghiabc', 'rfind', '')
        self.checkequal(0, 'abcdefghiabc', 'rfind', 'abcd')
        self.checkequal(-1, 'abcdefghiabc', 'rfind', 'abcz')

        self.checkequal(3, 'abc', 'rfind', '', 0)
        self.checkequal(3, 'abc', 'rfind', '', 3)
        self.checkequal(-1, 'abc', 'rfind', '', 4)

        # to check the ability to pass None as defaults
        self.checkequal(12, 'rrarrrrrrrrra', 'rfind', 'a')
        self.checkequal(12, 'rrarrrrrrrrra', 'rfind', 'a', 4)
        self.checkequal(-1, 'rrarrrrrrrrra', 'rfind', 'a', 4, 6)
        self.checkequal(12, 'rrarrrrrrrrra', 'rfind', 'a', 4, None)
        self.checkequal( 2, 'rrarrrrrrrrra', 'rfind', 'a', None, 6)

        self.checkraises(TypeError, 'hello', 'rfind')
        self.checkraises(TypeError, 'hello', 'rfind', 42)

        # For a variety of combinations,
        #    verify that str.rfind() matches __contains__
        #    and that the found substring is really at that location
        charset = ['', 'a', 'b', 'c']
        digits = 5
        base = len(charset)
        teststrings = set()
        for i in xrange(base ** digits):
            entry = []
            for j in xrange(digits):
                i, m = divmod(i, base)
                entry.append(charset[m])
            teststrings.add(''.join(entry))
        teststrings = list(teststrings)
        for i in teststrings:
            i = self.fixtype(i)
            for j in teststrings:
                loc = i.rfind(j)
                r1 = (loc != -1)
                r2 = j in i
                self.assertEqual(r1, r2)
                if loc != -1:
                    self.assertEqual(i[loc:loc+len(j)], self.fixtype(j))

        # issue 7458
        self.checkequal(-1, 'ab', 'rfind', 'xxx', sys.maxsize + 1, 0)

    def test_index(self):
        self.checkequal(0, 'abcdefghiabc', 'index', '')
        self.checkequal(3, 'abcdefghiabc', 'index', 'def')
        self.checkequal(0, 'abcdefghiabc', 'index', 'abc')
        self.checkequal(9, 'abcdefghiabc', 'index', 'abc', 1)

        self.checkraises(ValueError, 'abcdefghiabc', 'index', 'hib')
        self.checkraises(ValueError, 'abcdefghiab', 'index', 'abc', 1)
        self.checkraises(ValueError, 'abcdefghi', 'index', 'ghi', 8)
        self.checkraises(ValueError, 'abcdefghi', 'index', 'ghi', -1)

        # to check the ability to pass None as defaults
        self.checkequal( 2, 'rrarrrrrrrrra', 'index', 'a')
        self.checkequal(12, 'rrarrrrrrrrra', 'index', 'a', 4)
        self.checkraises(ValueError, 'rrarrrrrrrrra', 'index', 'a', 4, 6)
        self.checkequal(12, 'rrarrrrrrrrra', 'index', 'a', 4, None)
        self.checkequal( 2, 'rrarrrrrrrrra', 'index', 'a', None, 6)

        self.checkraises(TypeError, 'hello', 'index')
        self.checkraises(TypeError, 'hello', 'index', 42)

    def test_rindex(self):
        self.checkequal(12, 'abcdefghiabc', 'rindex', '')
        self.checkequal(3,  'abcdefghiabc', 'rindex', 'def')
        self.checkequal(9,  'abcdefghiabc', 'rindex', 'abc')
        self.checkequal(0,  'abcdefghiabc', 'rindex', 'abc', 0, -1)

        self.checkraises(ValueError, 'abcdefghiabc', 'rindex', 'hib')
        self.checkraises(ValueError, 'defghiabc', 'rindex', 'def', 1)
        self.checkraises(ValueError, 'defghiabc', 'rindex', 'abc', 0, -1)
        self.checkraises(ValueError, 'abcdefghi', 'rindex', 'ghi', 0, 8)
        self.checkraises(ValueError, 'abcdefghi', 'rindex', 'ghi', 0, -1)

        # to check the ability to pass None as defaults
        self.checkequal(12, 'rrarrrrrrrrra', 'rindex', 'a')
        self.checkequal(12, 'rrarrrrrrrrra', 'rindex', 'a', 4)
        self.checkraises(ValueError, 'rrarrrrrrrrra', 'rindex', 'a', 4, 6)
        self.checkequal(12, 'rrarrrrrrrrra', 'rindex', 'a', 4, None)
        self.checkequal( 2, 'rrarrrrrrrrra', 'rindex', 'a', None, 6)

        self.checkraises(TypeError, 'hello', 'rindex')
        self.checkraises(TypeError, 'hello', 'rindex', 42)

    def test_lower(self):
        self.checkequal('hello', 'HeLLo', 'lower')
        self.checkequal('hello', 'hello', 'lower')
        self.checkraises(TypeError, 'hello', 'lower', 42)

    def test_upper(self):
        self.checkequal('HELLO', 'HeLLo', 'upper')
        self.checkequal('HELLO', 'HELLO', 'upper')
        self.checkraises(TypeError, 'hello', 'upper', 42)

    def test_expandtabs(self):
        self.checkequal('abc\rab      def\ng       hi', 'abc\rab\tdef\ng\thi', 'expandtabs')
        self.checkequal('abc\rab      def\ng       hi', 'abc\rab\tdef\ng\thi', 'expandtabs', 8)
        self.checkequal('abc\rab  def\ng   hi', 'abc\rab\tdef\ng\thi', 'expandtabs', 4)
        self.checkequal('abc\r\nab  def\ng   hi', 'abc\r\nab\tdef\ng\thi', 'expandtabs', 4)
        self.checkequal('abc\rab      def\ng       hi', 'abc\rab\tdef\ng\thi', 'expandtabs')
        self.checkequal('abc\rab      def\ng       hi', 'abc\rab\tdef\ng\thi', 'expandtabs', 8)
        self.checkequal('abc\r\nab\r\ndef\ng\r\nhi', 'abc\r\nab\r\ndef\ng\r\nhi', 'expandtabs', 4)
        self.checkequal('  a\n b', ' \ta\n\tb', 'expandtabs', 1)

        self.checkraises(TypeError, 'hello', 'expandtabs', 42, 42)
        # This test is only valid when sizeof(int) == sizeof(void*) == 4.
        if sys.maxint < (1 << 32) and struct.calcsize('P') == 4:
            self.checkraises(OverflowError,
                             '\ta\n\tb', 'expandtabs', sys.maxint)

    def test_split(self):
        self.checkequal(['this', 'is', 'the', 'split', 'function'],
            'this is the split function', 'split')

        # by whitespace
        self.checkequal(['a', 'b', 'c', 'd'], 'a b c d ', 'split')
        self.checkequal(['a', 'b c d'], 'a b c d', 'split', None, 1)
        self.checkequal(['a', 'b', 'c d'], 'a b c d', 'split', None, 2)
        self.checkequal(['a', 'b', 'c', 'd'], 'a b c d', 'split', None, 3)
        self.checkequal(['a', 'b', 'c', 'd'], 'a b c d', 'split', None, 4)
        self.checkequal(['a', 'b', 'c', 'd'], 'a b c d', 'split', None,
                        sys.maxint-1)
        self.checkequal(['a b c d'], 'a b c d', 'split', None, 0)
        self.checkequal(['a b c d'], '  a b c d', 'split', None, 0)
        self.checkequal(['a', 'b', 'c  d'], 'a  b  c  d', 'split', None, 2)

        self.checkequal([], '         ', 'split')
        self.checkequal(['a'], '  a    ', 'split')
        self.checkequal(['a', 'b'], '  a    b   ', 'split')
        self.checkequal(['a', 'b   '], '  a    b   ', 'split', None, 1)
        self.checkequal(['a    b   c   '], '  a    b   c   ', 'split', None, 0)
        self.checkequal(['a', 'b   c   '], '  a    b   c   ', 'split', None, 1)
        self.checkequal(['a', 'b', 'c   '], '  a    b   c   ', 'split', None, 2)
        self.checkequal(['a', 'b', 'c'], '  a    b   c   ', 'split', None, 3)
        self.checkequal(['a', 'b'], '\n\ta \t\r b \v ', 'split')
        aaa = ' a '*20
        self.checkequal(['a']*20, aaa, 'split')
        self.checkequal(['a'] + [aaa[4:]], aaa, 'split', None, 1)
        self.checkequal(['a']*19 + ['a '], aaa, 'split', None, 19)

        for b in ('arf\tbarf', 'arf\nbarf', 'arf\rbarf',
                  'arf\fbarf', 'arf\vbarf'):
            self.checkequal(['arf', 'barf'], b, 'split')
            self.checkequal(['arf', 'barf'], b, 'split', None)
            self.checkequal(['arf', 'barf'], b, 'split', None, 2)

        # by a char
        self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'split', '|')
        self.checkequal(['a|b|c|d'], 'a|b|c|d', 'split', '|', 0)
        self.checkequal(['a', 'b|c|d'], 'a|b|c|d', 'split', '|', 1)
        self.checkequal(['a', 'b', 'c|d'], 'a|b|c|d', 'split', '|', 2)
        self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'split', '|', 3)
        self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'split', '|', 4)
        self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'split', '|',
                        sys.maxint-2)
        self.checkequal(['a|b|c|d'], 'a|b|c|d', 'split', '|', 0)
        self.checkequal(['a', '', 'b||c||d'], 'a||b||c||d', 'split', '|', 2)
        self.checkequal(['abcd'], 'abcd', 'split', '|')
        self.checkequal([''], '', 'split', '|')
        self.checkequal(['endcase ', ''], 'endcase |', 'split', '|')
        self.checkequal(['', ' startcase'], '| startcase', 'split', '|')
        self.checkequal(['', 'bothcase', ''], '|bothcase|', 'split', '|')
        self.checkequal(['a', '', 'b\x00c\x00d'], 'a\x00\x00b\x00c\x00d', 'split', '\x00', 2)

        self.checkequal(['a']*20, ('a|'*20)[:-1], 'split', '|')
        self.checkequal(['a']*15 +['a|a|a|a|a'],
                                   ('a|'*20)[:-1], 'split', '|', 15)

        # by string
        self.checkequal(['a', 'b', 'c', 'd'], 'a//b//c//d', 'split', '//')
        self.checkequal(['a', 'b//c//d'], 'a//b//c//d', 'split', '//', 1)
        self.checkequal(['a', 'b', 'c//d'], 'a//b//c//d', 'split', '//', 2)
        self.checkequal(['a', 'b', 'c', 'd'], 'a//b//c//d', 'split', '//', 3)
        self.checkequal(['a', 'b', 'c', 'd'], 'a//b//c//d', 'split', '//', 4)
        self.checkequal(['a', 'b', 'c', 'd'], 'a//b//c//d', 'split', '//',
                        sys.maxint-10)
        self.checkequal(['a//b//c//d'], 'a//b//c//d', 'split', '//', 0)
        self.checkequal(['a', '', 'b////c////d'], 'a////b////c////d', 'split', '//', 2)
        self.checkequal(['endcase ', ''], 'endcase test', 'split', 'test')
        self.checkequal(['', ' begincase'], 'test begincase', 'split', 'test')
        self.checkequal(['', ' bothcase ', ''], 'test bothcase test',
                        'split', 'test')
        self.checkequal(['a', 'bc'], 'abbbc', 'split', 'bb')
        self.checkequal(['', ''], 'aaa', 'split', 'aaa')
        self.checkequal(['aaa'], 'aaa', 'split', 'aaa', 0)
        self.checkequal(['ab', 'ab'], 'abbaab', 'split', 'ba')
        self.checkequal(['aaaa'], 'aaaa', 'split', 'aab')
        self.checkequal([''], '', 'split', 'aaa')
        self.checkequal(['aa'], 'aa', 'split', 'aaa')
        self.checkequal(['A', 'bobb'], 'Abbobbbobb', 'split', 'bbobb')
        self.checkequal(['A', 'B', ''], 'AbbobbBbbobb', 'split', 'bbobb')

        self.checkequal(['a']*20, ('aBLAH'*20)[:-4], 'split', 'BLAH')
        self.checkequal(['a']*20, ('aBLAH'*20)[:-4], 'split', 'BLAH', 19)
        self.checkequal(['a']*18 + ['aBLAHa'], ('aBLAH'*20)[:-4],
                        'split', 'BLAH', 18)

        # mixed use of str and unicode
        if self.type2test is not bytearray:
            result = [u'a', u'b', u'c d']
            self.checkequal(result, 'a b c d', 'split', u' ', 2)

        # argument type
        self.checkraises(TypeError, 'hello', 'split', 42, 42, 42)

        # null case
        self.checkraises(ValueError, 'hello', 'split', '')
        self.checkraises(ValueError, 'hello', 'split', '', 0)

    def test_rsplit(self):
        self.checkequal(['this', 'is', 'the', 'rsplit', 'function'],
                         'this is the rsplit function', 'rsplit')

        # by whitespace
        self.checkequal(['a', 'b', 'c', 'd'], 'a b c d ', 'rsplit')
        self.checkequal(['a b c', 'd'], 'a b c d', 'rsplit', None, 1)
        self.checkequal(['a b', 'c', 'd'], 'a b c d', 'rsplit', None, 2)
        self.checkequal(['a', 'b', 'c', 'd'], 'a b c d', 'rsplit', None, 3)
        self.checkequal(['a', 'b', 'c', 'd'], 'a b c d', 'rsplit', None, 4)
        self.checkequal(['a', 'b', 'c', 'd'], 'a b c d', 'rsplit', None,
                        sys.maxint-20)
        self.checkequal(['a b c d'], 'a b c d', 'rsplit', None, 0)
        self.checkequal(['a b c d'], 'a b c d  ', 'rsplit', None, 0)
        self.checkequal(['a  b', 'c', 'd'], 'a  b  c  d', 'rsplit', None, 2)

        self.checkequal([], '         ', 'rsplit')
        self.checkequal(['a'], '  a    ', 'rsplit')
        self.checkequal(['a', 'b'], '  a    b   ', 'rsplit')
        self.checkequal(['  a', 'b'], '  a    b   ', 'rsplit', None, 1)
        self.checkequal(['  a    b   c'], '  a    b   c   ', 'rsplit',
                        None, 0)
        self.checkequal(['  a    b','c'], '  a    b   c   ', 'rsplit',
                        None, 1)
        self.checkequal(['  a', 'b', 'c'], '  a    b   c   ', 'rsplit',
                        None, 2)
        self.checkequal(['a', 'b', 'c'], '  a    b   c   ', 'rsplit',
                        None, 3)
        self.checkequal(['a', 'b'], '\n\ta \t\r b \v ', 'rsplit', None, 88)
        aaa = ' a '*20
        self.checkequal(['a']*20, aaa, 'rsplit')
        self.checkequal([aaa[:-4]] + ['a'], aaa, 'rsplit', None, 1)
        self.checkequal([' a  a'] + ['a']*18, aaa, 'rsplit', None, 18)

        for b in ('arf\tbarf', 'arf\nbarf', 'arf\rbarf',
                  'arf\fbarf', 'arf\vbarf'):
            self.checkequal(['arf', 'barf'], b, 'rsplit')
            self.checkequal(['arf', 'barf'], b, 'rsplit', None)
            self.checkequal(['arf', 'barf'], b, 'rsplit', None, 2)

        # by a char
        self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'rsplit', '|')
        self.checkequal(['a|b|c', 'd'], 'a|b|c|d', 'rsplit', '|', 1)
        self.checkequal(['a|b', 'c', 'd'], 'a|b|c|d', 'rsplit', '|', 2)
        self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'rsplit', '|', 3)
        self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'rsplit', '|', 4)
        self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'rsplit', '|',
                        sys.maxint-100)
        self.checkequal(['a|b|c|d'], 'a|b|c|d', 'rsplit', '|', 0)
        self.checkequal(['a||b||c', '', 'd'], 'a||b||c||d', 'rsplit', '|', 2)
        self.checkequal(['abcd'], 'abcd', 'rsplit', '|')
        self.checkequal([''], '', 'rsplit', '|')
        self.checkequal(['', ' begincase'], '| begincase', 'rsplit', '|')
        self.checkequal(['endcase ', ''], 'endcase |', 'rsplit', '|')
        self.checkequal(['', 'bothcase', ''], '|bothcase|', 'rsplit', '|')

        self.checkequal(['a\x00\x00b', 'c', 'd'], 'a\x00\x00b\x00c\x00d', 'rsplit', '\x00', 2)

        self.checkequal(['a']*20, ('a|'*20)[:-1], 'rsplit', '|')
        self.checkequal(['a|a|a|a|a']+['a']*15,
                        ('a|'*20)[:-1], 'rsplit', '|', 15)

        # by string
        self.checkequal(['a', 'b', 'c', 'd'], 'a//b//c//d', 'rsplit', '//')
        self.checkequal(['a//b//c', 'd'], 'a//b//c//d', 'rsplit', '//', 1)
        self.checkequal(['a//b', 'c', 'd'], 'a//b//c//d', 'rsplit', '//', 2)
        self.checkequal(['a', 'b', 'c', 'd'], 'a//b//c//d', 'rsplit', '//', 3)
        self.checkequal(['a', 'b', 'c', 'd'], 'a//b//c//d', 'rsplit', '//', 4)
        self.checkequal(['a', 'b', 'c', 'd'], 'a//b//c//d', 'rsplit', '//',
                        sys.maxint-5)
        self.checkequal(['a//b//c//d'], 'a//b//c//d', 'rsplit', '//', 0)
        self.checkequal(['a////b////c', '', 'd'], 'a////b////c////d', 'rsplit', '//', 2)
        self.checkequal(['', ' begincase'], 'test begincase', 'rsplit', 'test')
        self.checkequal(['endcase ', ''], 'endcase test', 'rsplit', 'test')
        self.checkequal(['', ' bothcase ', ''], 'test bothcase test',
                        'rsplit', 'test')
        self.checkequal(['ab', 'c'], 'abbbc', 'rsplit', 'bb')
        self.checkequal(['', ''], 'aaa', 'rsplit', 'aaa')
        self.checkequal(['aaa'], 'aaa', 'rsplit', 'aaa', 0)
        self.checkequal(['ab', 'ab'], 'abbaab', 'rsplit', 'ba')
        self.checkequal(['aaaa'], 'aaaa', 'rsplit', 'aab')
        self.checkequal([''], '', 'rsplit', 'aaa')
        self.checkequal(['aa'], 'aa', 'rsplit', 'aaa')
        self.checkequal(['bbob', 'A'], 'bbobbbobbA', 'rsplit', 'bbobb')
        self.checkequal(['', 'B', 'A'], 'bbobbBbbobbA', 'rsplit', 'bbobb')

        self.checkequal(['a']*20, ('aBLAH'*20)[:-4], 'rsplit', 'BLAH')
        self.checkequal(['a']*20, ('aBLAH'*20)[:-4], 'rsplit', 'BLAH', 19)
        self.checkequal(['aBLAHa'] + ['a']*18, ('aBLAH'*20)[:-4],
                        'rsplit', 'BLAH', 18)

        # mixed use of str and unicode
        if self.type2test is not bytearray:
            result = [u'a b', u'c', u'd']
            self.checkequal(result, 'a b c d', 'rsplit', u' ', 2)

        # argument type
        self.checkraises(TypeError, 'hello', 'rsplit', 42, 42, 42)

        # null case
        self.checkraises(ValueError, 'hello', 'rsplit', '')
        self.checkraises(ValueError, 'hello', 'rsplit', '', 0)

    def test_strip_whitespace(self):
        self.checkequal('hello', '   hello   ', 'strip')
        self.checkequal('hello   ', '   hello   ', 'lstrip')
        self.checkequal('   hello', '   hello   ', 'rstrip')
        self.checkequal('hello', 'hello', 'strip')

        b = ' \t\n\r\f\vabc \t\n\r\f\v'
        self.checkequal('abc', b, 'strip')
        self.checkequal('abc \t\n\r\f\v', b, 'lstrip')
        self.checkequal(' \t\n\r\f\vabc', b, 'rstrip')

        # strip/lstrip/rstrip with None arg
        self.checkequal('hello', '   hello   ', 'strip', None)
        self.checkequal('hello   ', '   hello   ', 'lstrip', None)
        self.checkequal('   hello', '   hello   ', 'rstrip', None)
        self.checkequal('hello', 'hello', 'strip', None)

    def test_strip(self):
        # strip/lstrip/rstrip with str arg
        self.checkequal('hello', 'xyzzyhelloxyzzy', 'strip', 'xyz')
        self.checkequal('helloxyzzy', 'xyzzyhelloxyzzy', 'lstrip', 'xyz')
        self.checkequal('xyzzyhello', 'xyzzyhelloxyzzy', 'rstrip', 'xyz')
        self.checkequal('hello', 'hello', 'strip', 'xyz')
        self.checkequal('', 'mississippi', 'strip', 'mississippi')

        # only trims the start and end, does not strip internal characters
        self.checkequal('mississipp', 'mississippi', 'strip', 'i')

        # strip/lstrip/rstrip with unicode arg
        if self.type2test is not bytearray and test_support.have_unicode:
            self.checkequal(unicode('hello', 'ascii'), 'xyzzyhelloxyzzy',
                 'strip', unicode('xyz', 'ascii'))
            self.checkequal(unicode('helloxyzzy', 'ascii'), 'xyzzyhelloxyzzy',
                 'lstrip', unicode('xyz', 'ascii'))
            self.checkequal(unicode('xyzzyhello', 'ascii'), 'xyzzyhelloxyzzy',
                 'rstrip', unicode('xyz', 'ascii'))
            # XXX
            #self.checkequal(unicode('hello', 'ascii'), 'hello',
            #     'strip', unicode('xyz', 'ascii'))

        self.checkraises(TypeError, 'hello', 'strip', 42, 42)
        self.checkraises(TypeError, 'hello', 'lstrip', 42, 42)
        self.checkraises(TypeError, 'hello', 'rstrip', 42, 42)

    def test_ljust(self):
        self.checkequal('abc       ', 'abc', 'ljust', 10)
        self.checkequal('abc   ', 'abc', 'ljust', 6)
        self.checkequal('abc', 'abc', 'ljust', 3)
        self.checkequal('abc', 'abc', 'ljust', 2)
        if self.type2test is bytearray:
            # Special case because bytearray argument is not accepted
            self.assertEqual(b'abc*******', bytearray(b'abc').ljust(10, '*'))
        else:
            self.checkequal('abc*******', 'abc', 'ljust', 10, '*')
        self.checkraises(TypeError, 'abc', 'ljust')

    def test_rjust(self):
        self.checkequal('       abc', 'abc', 'rjust', 10)
        self.checkequal('   abc', 'abc', 'rjust', 6)
        self.checkequal('abc', 'abc', 'rjust', 3)
        self.checkequal('abc', 'abc', 'rjust', 2)
        if self.type2test is bytearray:
            # Special case because bytearray argument is not accepted
            self.assertEqual(b'*******abc', bytearray(b'abc').rjust(10, '*'))
        else:
            self.checkequal('*******abc', 'abc', 'rjust', 10, '*')
        self.checkraises(TypeError, 'abc', 'rjust')

    def test_center(self):
        self.checkequal('   abc    ', 'abc', 'center', 10)
        self.checkequal(' abc  ', 'abc', 'center', 6)
        self.checkequal('abc', 'abc', 'center', 3)
        self.checkequal('abc', 'abc', 'center', 2)
        if self.type2test is bytearray:
            # Special case because bytearray argument is not accepted
            result = bytearray(b'abc').center(10, '*')
            self.assertEqual(b'***abc****', result)
        else:
            self.checkequal('***abc****', 'abc', 'center', 10, '*')
        self.checkraises(TypeError, 'abc', 'center')

    def test_swapcase(self):
        self.checkequal('hEllO CoMPuTErS', 'HeLLo cOmpUteRs', 'swapcase')

        self.checkraises(TypeError, 'hello', 'swapcase', 42)

    def test_replace(self):
        EQ = self.checkequal

        # Operations on the empty string
        EQ("", "", "replace", "", "")
        EQ("A", "", "replace", "", "A")
        EQ("", "", "replace", "A", "")
        EQ("", "", "replace", "A", "A")
        EQ("", "", "replace", "", "", 100)
        EQ("", "", "replace", "", "", sys.maxint)

        # interleave (from=="", 'to' gets inserted everywhere)
        EQ("A", "A", "replace", "", "")
        EQ("*A*", "A", "replace", "", "*")
        EQ("*1A*1", "A", "replace", "", "*1")
        EQ("*-#A*-#", "A", "replace", "", "*-#")
        EQ("*-A*-A*-", "AA", "replace", "", "*-")
        EQ("*-A*-A*-", "AA", "replace", "", "*-", -1)
        EQ("*-A*-A*-", "AA", "replace", "", "*-", sys.maxint)
        EQ("*-A*-A*-", "AA", "replace", "", "*-", 4)
        EQ("*-A*-A*-", "AA", "replace", "", "*-", 3)
        EQ("*-A*-A", "AA", "replace", "", "*-", 2)
        EQ("*-AA", "AA", "replace", "", "*-", 1)
        EQ("AA", "AA", "replace", "", "*-", 0)

        # single character deletion (from=="A", to=="")
        EQ("", "A", "replace", "A", "")
        EQ("", "AAA", "replace", "A", "")
        EQ("", "AAA", "replace", "A", "", -1)
        EQ("", "AAA", "replace", "A", "", sys.maxint)
        EQ("", "AAA", "replace", "A", "", 4)
        EQ("", "AAA", "replace", "A", "", 3)
        EQ("A", "AAA", "replace", "A", "", 2)
        EQ("AA", "AAA", "replace", "A", "", 1)
        EQ("AAA", "AAA", "replace", "A", "", 0)
        EQ("", "AAAAAAAAAA", "replace", "A", "")
        EQ("BCD", "ABACADA", "replace", "A", "")
        EQ("BCD", "ABACADA", "replace", "A", "", -1)
        EQ("BCD", "ABACADA", "replace", "A", "", sys.maxint)
        EQ("BCD", "ABACADA", "replace", "A", "", 5)
        EQ("BCD", "ABACADA", "replace", "A", "", 4)
        EQ("BCDA", "ABACADA", "replace", "A", "", 3)
        EQ("BCADA", "ABACADA", "replace", "A", "", 2)
        EQ("BACADA", "ABACADA", "replace", "A", "", 1)
        EQ("ABACADA", "ABACADA", "replace", "A", "", 0)
        EQ("BCD", "ABCAD", "replace", "A", "")
        EQ("BCD", "ABCADAA", "replace", "A", "")
        EQ("BCD", "BCD", "replace", "A", "")
        EQ("*************", "*************", "replace", "A", "")
        EQ("^A^", "^"+"A"*1000+"^", "replace", "A", "", 999)

        # substring deletion (from=="the", to=="")
        EQ("", "the", "replace", "the", "")
        EQ("ater", "theater", "replace", "the", "")
        EQ("", "thethe", "replace", "the", "")
        EQ("", "thethethethe", "replace", "the", "")
        EQ("aaaa", "theatheatheathea", "replace", "the", "")
        EQ("that", "that", "replace", "the", "")
        EQ("thaet", "thaet", "replace", "the", "")
        EQ("here and re", "here and there", "replace", "the", "")
        EQ("here and re and re", "here and there and there",
           "replace", "the", "", sys.maxint)
        EQ("here and re and re", "here and there and there",
           "replace", "the", "", -1)
        EQ("here and re and re", "here and there and there",
           "replace", "the", "", 3)
        EQ("here and re and re", "here and there and there",
           "replace", "the", "", 2)
        EQ("here and re and there", "here and there and there",
           "replace", "the", "", 1)
        EQ("here and there and there", "here and there and there",
           "replace", "the", "", 0)
        EQ("here and re and re", "here and there and there", "replace", "the", "")

        EQ("abc", "abc", "replace", "the", "")
        EQ("abcdefg", "abcdefg", "replace", "the", "")

        # substring deletion (from=="bob", to=="")
        EQ("bob", "bbobob", "replace", "bob", "")
        EQ("bobXbob", "bbobobXbbobob", "replace", "bob", "")
        EQ("aaaaaaa", "aaaaaaabob", "replace", "bob", "")
        EQ("aaaaaaa", "aaaaaaa", "replace", "bob", "")

        # single character replace in place (len(from)==len(to)==1)
        EQ("Who goes there?", "Who goes there?", "replace", "o", "o")
        EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O")
        EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O", sys.maxint)
        EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O", -1)
        EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O", 3)
        EQ("WhO gOes there?", "Who goes there?", "replace", "o", "O", 2)
        EQ("WhO goes there?", "Who goes there?", "replace", "o", "O", 1)
        EQ("Who goes there?", "Who goes there?", "replace", "o", "O", 0)

        EQ("Who goes there?", "Who goes there?", "replace", "a", "q")
        EQ("who goes there?", "Who goes there?", "replace", "W", "w")
        EQ("wwho goes there?ww", "WWho goes there?WW", "replace", "W", "w")
        EQ("Who goes there!", "Who goes there?", "replace", "?", "!")
        EQ("Who goes there!!", "Who goes there??", "replace", "?", "!")

        EQ("Who goes there?", "Who goes there?", "replace", ".", "!")

        # substring replace in place (len(from)==len(to) > 1)
        EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**")
        EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**", sys.maxint)
        EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**", -1)
        EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**", 4)
        EQ("Th** ** a t**sue", "This is a tissue", "replace", "is", "**", 3)
        EQ("Th** ** a tissue", "This is a tissue", "replace", "is", "**", 2)
        EQ("Th** is a tissue", "This is a tissue", "replace", "is", "**", 1)
        EQ("This is a tissue", "This is a tissue", "replace", "is", "**", 0)
        EQ("cobob", "bobob", "replace", "bob", "cob")
        EQ("cobobXcobocob", "bobobXbobobob", "replace", "bob", "cob")
        EQ("bobob", "bobob", "replace", "bot", "bot")

        # replace single character (len(from)==1, len(to)>1)
        EQ("ReyKKjaviKK", "Reykjavik", "replace", "k", "KK")
        EQ("ReyKKjaviKK", "Reykjavik", "replace", "k", "KK", -1)
        EQ("ReyKKjaviKK", "Reykjavik", "replace", "k", "KK", sys.maxint)
        EQ("ReyKKjaviKK", "Reykjavik", "replace", "k", "KK", 2)
        EQ("ReyKKjavik", "Reykjavik", "replace", "k", "KK", 1)
        EQ("Reykjavik", "Reykjavik", "replace", "k", "KK", 0)
        EQ("A----B----C----", "A.B.C.", "replace", ".", "----")

        EQ("Reykjavik", "Reykjavik", "replace", "q", "KK")

        # replace substring (len(from)>1, len(to)!=len(from))
        EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam",
           "replace", "spam", "ham")
        EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam",
           "replace", "spam", "ham", sys.maxint)
        EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam",
           "replace", "spam", "ham", -1)
        EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam",
           "replace", "spam", "ham", 4)
        EQ("ham, ham, eggs and ham", "spam, spam, eggs and spam",
           "replace", "spam", "ham", 3)
        EQ("ham, ham, eggs and spam", "spam, spam, eggs and spam",
           "replace", "spam", "ham", 2)
        EQ("ham, spam, eggs and spam", "spam, spam, eggs and spam",
           "replace", "spam", "ham", 1)
        EQ("spam, spam, eggs and spam", "spam, spam, eggs and spam",
           "replace", "spam", "ham", 0)

        EQ("bobob", "bobobob", "replace", "bobob", "bob")
        EQ("bobobXbobob", "bobobobXbobobob", "replace", "bobob", "bob")
        EQ("BOBOBOB", "BOBOBOB", "replace", "bob", "bobby")

        with test_support.check_py3k_warnings():
            ba = buffer('a')
            bb = buffer('b')
        EQ("bbc", "abc", "replace", ba, bb)
        EQ("aac", "abc", "replace", bb, ba)

        #
        self.checkequal('one@two!three!', 'one!two!three!', 'replace', '!', '@', 1)
        self.checkequal('onetwothree', 'one!two!three!', 'replace', '!', '')
        self.checkequal('one@two@three!', 'one!two!three!', 'replace', '!', '@', 2)
        self.checkequal('one@two@three@', 'one!two!three!', 'replace', '!', '@', 3)
        self.checkequal('one@two@three@', 'one!two!three!', 'replace', '!', '@', 4)
        self.checkequal('one!two!three!', 'one!two!three!', 'replace', '!', '@', 0)
        self.checkequal('one@two@three@', 'one!two!three!', 'replace', '!', '@')
        self.checkequal('one!two!three!', 'one!two!three!', 'replace', 'x', '@')
        self.checkequal('one!two!three!', 'one!two!three!', 'replace', 'x', '@', 2)
        self.checkequal('-a-b-c-', 'abc', 'replace', '', '-')
        self.checkequal('-a-b-c', 'abc', 'replace', '', '-', 3)
        self.checkequal('abc', 'abc', 'replace', '', '-', 0)
        self.checkequal('', '', 'replace', '', '')
        self.checkequal('abc', 'abc', 'replace', 'ab', '--', 0)
        self.checkequal('abc', 'abc', 'replace', 'xy', '--')
        # Next three for SF bug 422088: [OSF1 alpha] string.replace(); died with
        # MemoryError due to empty result (platform malloc issue when requesting
        # 0 bytes).
        self.checkequal('', '123', 'replace', '123', '')
        self.checkequal('', '123123', 'replace', '123', '')
        self.checkequal('x', '123x123', 'replace', '123', '')

        self.checkraises(TypeError, 'hello', 'replace')
        self.checkraises(TypeError, 'hello', 'replace', 42)
        self.checkraises(TypeError, 'hello', 'replace', 42, 'h')
        self.checkraises(TypeError, 'hello', 'replace', 'h', 42)

    @unittest.skipIf(sys.maxint > (1 << 32) or struct.calcsize('P') != 4,
                     'only applies to 32-bit platforms')
    def test_replace_overflow(self):
        # Check for overflow checking on 32 bit machines
        A2_16 = "A" * (2**16)
        self.checkraises(OverflowError, A2_16, "replace", "", A2_16)
        self.checkraises(OverflowError, A2_16, "replace", "A", A2_16)
        self.checkraises(OverflowError, A2_16, "replace", "AA", A2_16+A2_16)

    def test_zfill(self):
        self.checkequal('123', '123', 'zfill', 2)
        self.checkequal('123', '123', 'zfill', 3)
        self.checkequal('0123', '123', 'zfill', 4)
        self.checkequal('+123', '+123', 'zfill', 3)
        self.checkequal('+123', '+123', 'zfill', 4)
        self.checkequal('+0123', '+123', 'zfill', 5)
        self.checkequal('-123', '-123', 'zfill', 3)
        self.checkequal('-123', '-123', 'zfill', 4)
        self.checkequal('-0123', '-123', 'zfill', 5)
        self.checkequal('000', '', 'zfill', 3)
        self.checkequal('34', '34', 'zfill', 1)
        self.checkequal('0034', '34', 'zfill', 4)

        self.checkraises(TypeError, '123', 'zfill')


class NonStringModuleTest:
    # additional test cases for all string classes from bytearray to
    # UserString, but not valid for the "string" module

    def test_islower(self):
        self.checkequal(False, '', 'islower')
        self.checkequal(True, 'a', 'islower')
        self.checkequal(False, 'A', 'islower')
        self.checkequal(False, '\n', 'islower')
        self.checkequal(True, 'abc', 'islower')
        self.checkequal(False, 'aBc', 'islower')
        self.checkequal(True, 'abc\n', 'islower')
        self.checkraises(TypeError, 'abc', 'islower', 42)

    def test_isupper(self):
        self.checkequal(False, '', 'isupper')
        self.checkequal(False, 'a', 'isupper')
        self.checkequal(True, 'A', 'isupper')
        self.checkequal(False, '\n', 'isupper')
        self.checkequal(True, 'ABC', 'isupper')
        self.checkequal(False, 'AbC', 'isupper')
        self.checkequal(True, 'ABC\n', 'isupper')
        self.checkraises(TypeError, 'abc', 'isupper', 42)

    def test_istitle(self):
        self.checkequal(False, '', 'istitle')
        self.checkequal(False, 'a', 'istitle')
        self.checkequal(True, 'A', 'istitle')
        self.checkequal(False, '\n', 'istitle')
        self.checkequal(True, 'A Titlecased Line', 'istitle')
        self.checkequal(True, 'A\nTitlecased Line', 'istitle')
        self.checkequal(True, 'A Titlecased, Line', 'istitle')
        self.checkequal(False, 'Not a capitalized String', 'istitle')
        self.checkequal(False, 'Not\ta Titlecase String', 'istitle')
        self.checkequal(False, 'Not--a Titlecase String', 'istitle')
        self.checkequal(False, 'NOT', 'istitle')
        self.checkraises(TypeError, 'abc', 'istitle', 42)

    def test_isspace(self):
        self.checkequal(False, '', 'isspace')
        self.checkequal(False, 'a', 'isspace')
        self.checkequal(True, ' ', 'isspace')
        self.checkequal(True, '\t', 'isspace')
        self.checkequal(True, '\r', 'isspace')
        self.checkequal(True, '\n', 'isspace')
        self.checkequal(True, ' \t\r\n', 'isspace')
        self.checkequal(False, ' \t\r\na', 'isspace')
        self.checkraises(TypeError, 'abc', 'isspace', 42)

    def test_isalpha(self):
        self.checkequal(False, '', 'isalpha')
        self.checkequal(True, 'a', 'isalpha')
        self.checkequal(True, 'A', 'isalpha')
        self.checkequal(False, '\n', 'isalpha')
        self.checkequal(True, 'abc', 'isalpha')
        self.checkequal(False, 'aBc123', 'isalpha')
        self.checkequal(False, 'abc\n', 'isalpha')
        self.checkraises(TypeError, 'abc', 'isalpha', 42)

    def test_isalnum(self):
        self.checkequal(False, '', 'isalnum')
        self.checkequal(True, 'a', 'isalnum')
        self.checkequal(True, 'A', 'isalnum')
        self.checkequal(False, '\n', 'isalnum')
        self.checkequal(True, '123abc456', 'isalnum')
        self.checkequal(True, 'a1b3c', 'isalnum')
        self.checkequal(False, 'aBc000 ', 'isalnum')
        self.checkequal(False, 'abc\n', 'isalnum')
        self.checkraises(TypeError, 'abc', 'isalnum', 42)

    def test_isdigit(self):
        self.checkequal(False, '', 'isdigit')
        self.checkequal(False, 'a', 'isdigit')
        self.checkequal(True, '0', 'isdigit')
        self.checkequal(True, '0123456789', 'isdigit')
        self.checkequal(False, '0123456789a', 'isdigit')

        self.checkraises(TypeError, 'abc', 'isdigit', 42)

    def test_title(self):
        self.checkequal(' Hello ', ' hello ', 'title')
        self.checkequal('Hello ', 'hello ', 'title')
        self.checkequal('Hello ', 'Hello ', 'title')
        self.checkequal('Format This As Title String', "fOrMaT thIs aS titLe String", 'title')
        self.checkequal('Format,This-As*Title;String', "fOrMaT,thIs-aS*titLe;String", 'title', )
        self.checkequal('Getint', "getInt", 'title')
        self.checkraises(TypeError, 'hello', 'title', 42)

    def test_splitlines(self):
        self.checkequal(['abc', 'def', '', 'ghi'], "abc\ndef\n\rghi", 'splitlines')
        self.checkequal(['abc', 'def', '', 'ghi'], "abc\ndef\n\r\nghi", 'splitlines')
        self.checkequal(['abc', 'def', 'ghi'], "abc\ndef\r\nghi", 'splitlines')
        self.checkequal(['abc', 'def', 'ghi'], "abc\ndef\r\nghi\n", 'splitlines')
        self.checkequal(['abc', 'def', 'ghi', ''], "abc\ndef\r\nghi\n\r", 'splitlines')
        self.checkequal(['', 'abc', 'def', 'ghi', ''], "\nabc\ndef\r\nghi\n\r", 'splitlines')
        self.checkequal(['\n', 'abc\n', 'def\r\n', 'ghi\n', '\r'], "\nabc\ndef\r\nghi\n\r", 'splitlines', 1)

        self.checkraises(TypeError, 'abc', 'splitlines', 42, 42)


class MixinStrUnicodeUserStringTest(NonStringModuleTest):
    # additional tests that only work for
    # stringlike objects, i.e. str, unicode, UserString
    # (but not the string module)

    def test_startswith(self):
        self.checkequal(True, 'hello', 'startswith', 'he')
        self.checkequal(True, 'hello', 'startswith', 'hello')
        self.checkequal(False, 'hello', 'startswith', 'hello world')
        self.checkequal(True, 'hello', 'startswith', '')
        self.checkequal(False, 'hello', 'startswith', 'ello')
        self.checkequal(True, 'hello', 'startswith', 'ello', 1)
        self.checkequal(True, 'hello', 'startswith', 'o', 4)
        self.checkequal(False, 'hello', 'startswith', 'o', 5)
        self.checkequal(True, 'hello', 'startswith', '', 5)
        self.checkequal(False, 'hello', 'startswith', 'lo', 6)
        self.checkequal(True, 'helloworld', 'startswith', 'lowo', 3)
        self.checkequal(True, 'helloworld', 'startswith', 'lowo', 3, 7)
        self.checkequal(False, 'helloworld', 'startswith', 'lowo', 3, 6)

        # test negative indices
        self.checkequal(True, 'hello', 'startswith', 'he', 0, -1)
        self.checkequal(True, 'hello', 'startswith', 'he', -53, -1)
        self.checkequal(False, 'hello', 'startswith', 'hello', 0, -1)
        self.checkequal(False, 'hello', 'startswith', 'hello world', -1, -10)
        self.checkequal(False, 'hello', 'startswith', 'ello', -5)
        self.checkequal(True, 'hello', 'startswith', 'ello', -4)
        self.checkequal(False, 'hello', 'startswith', 'o', -2)
        self.checkequal(True, 'hello', 'startswith', 'o', -1)
        self.checkequal(True, 'hello', 'startswith', '', -3, -3)
        self.checkequal(False, 'hello', 'startswith', 'lo', -9)

        self.checkraises(TypeError, 'hello', 'startswith')
        self.checkraises(TypeError, 'hello', 'startswith', 42)

        # test tuple arguments
        self.checkequal(True, 'hello', 'startswith', ('he', 'ha'))
        self.checkequal(False, 'hello', 'startswith', ('lo', 'llo'))
        self.checkequal(True, 'hello', 'startswith', ('hellox', 'hello'))
        self.checkequal(False, 'hello', 'startswith', ())
        self.checkequal(True, 'helloworld', 'startswith', ('hellowo',
                                                           'rld', 'lowo'), 3)
        self.checkequal(False, 'helloworld', 'startswith', ('hellowo', 'ello',
                                                            'rld'), 3)
        self.checkequal(True, 'hello', 'startswith', ('lo', 'he'), 0, -1)
        self.checkequal(False, 'hello', 'startswith', ('he', 'hel'), 0, 1)
        self.checkequal(True, 'hello', 'startswith', ('he', 'hel'), 0, 2)

        self.checkraises(TypeError, 'hello', 'startswith', (42,))

    def test_endswith(self):
        self.checkequal(True, 'hello', 'endswith', 'lo')
        self.checkequal(False, 'hello', 'endswith', 'he')
        self.checkequal(True, 'hello', 'endswith', '')
        self.checkequal(False, 'hello', 'endswith', 'hello world')
        self.checkequal(False, 'helloworld', 'endswith', 'worl')
        self.checkequal(True, 'helloworld', 'endswith', 'worl', 3, 9)
        self.checkequal(True, 'helloworld', 'endswith', 'world', 3, 12)
        self.checkequal(True, 'helloworld', 'endswith', 'lowo', 1, 7)
        self.checkequal(True, 'helloworld', 'endswith', 'lowo', 2, 7)
        self.checkequal(True, 'helloworld', 'endswith', 'lowo', 3, 7)
        self.checkequal(False, 'helloworld', 'endswith', 'lowo', 4, 7)
        self.checkequal(False, 'helloworld', 'endswith', 'lowo', 3, 8)
        self.checkequal(False, 'ab', 'endswith', 'ab', 0, 1)
        self.checkequal(False, 'ab', 'endswith', 'ab', 0, 0)

        # test negative indices
        self.checkequal(True, 'hello', 'endswith', 'lo', -2)
        self.checkequal(False, 'hello', 'endswith', 'he', -2)
        self.checkequal(True, 'hello', 'endswith', '', -3, -3)
        self.checkequal(False, 'hello', 'endswith', 'hello world', -10, -2)
        self.checkequal(False, 'helloworld', 'endswith', 'worl', -6)
        self.checkequal(True, 'helloworld', 'endswith', 'worl', -5, -1)
        self.checkequal(True, 'helloworld', 'endswith', 'worl', -5, 9)
        self.checkequal(True, 'helloworld', 'endswith', 'world', -7, 12)
        self.checkequal(True, 'helloworld', 'endswith', 'lowo', -99, -3)
        self.checkequal(True, 'helloworld', 'endswith', 'lowo', -8, -3)
        self.checkequal(True, 'helloworld', 'endswith', 'lowo', -7, -3)
        self.checkequal(False, 'helloworld', 'endswith', 'lowo', 3, -4)
        self.checkequal(False, 'helloworld', 'endswith', 'lowo', -8, -2)

        self.checkraises(TypeError, 'hello', 'endswith')
        self.checkraises(TypeError, 'hello', 'endswith', 42)

        # test tuple arguments
        self.checkequal(False, 'hello', 'endswith', ('he', 'ha'))
        self.checkequal(True, 'hello', 'endswith', ('lo', 'llo'))
        self.checkequal(True, 'hello', 'endswith', ('hellox', 'hello'))
        self.checkequal(False, 'hello', 'endswith', ())
        self.checkequal(True, 'helloworld', 'endswith', ('hellowo',
                                                           'rld', 'lowo'), 3)
        self.checkequal(False, 'helloworld', 'endswith', ('hellowo', 'ello',
                                                            'rld'), 3, -1)
        self.checkequal(True, 'hello', 'endswith', ('hell', 'ell'), 0, -1)
        self.checkequal(False, 'hello', 'endswith', ('he', 'hel'), 0, 1)
        self.checkequal(True, 'hello', 'endswith', ('he', 'hell'), 0, 4)

        self.checkraises(TypeError, 'hello', 'endswith', (42,))

    def test___contains__(self):
        self.checkequal(True, '', '__contains__', '')
        self.checkequal(True, 'abc', '__contains__', '')
        self.checkequal(False, 'abc', '__contains__', '\0')
        self.checkequal(True, '\0abc', '__contains__', '\0')
        self.checkequal(True, 'abc\0', '__contains__', '\0')
        self.checkequal(True, '\0abc', '__contains__', 'a')
        self.checkequal(True, 'asdf', '__contains__', 'asdf')
        self.checkequal(False, 'asd', '__co…