# -*- coding: iso-8859-1 -*-

""" Test script for the Unicode implementation.

Written by Marc-Andre Lemburg (mal@lemburg.com).

(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.

"""#"

import sys, struct, codecs

from test import test_support, string_tests

# Error handling (bad decoder return)

def search_function(encoding):

    def decode1(input, errors="strict"):

        return 42 # not a tuple

    def encode1(input, errors="strict"):

        return 42 # not a tuple

    def encode2(input, errors="strict"):

        return (42, 42) # no unicode

    def decode2(input, errors="strict"):

        return (42, 42) # no unicode

    if encoding=="test.unicode1":

        return (encode1, decode1, None, None)

    elif encoding=="test.unicode2":

        return (encode2, decode2, None, None)

    else:

        return None

codecs.register(search_function)

class UnicodeTest(

    string_tests.CommonTest,

    string_tests.MixinStrUnicodeUserStringTest,

    string_tests.MixinStrUnicodeTest,

    ):

    type2test = unicode

    def checkequalnofix(self, result, object, methodname, *args):

        method = getattr(object, methodname)

        realresult = method(*args)

        self.assertEqual(realresult, result)

        self.assert_(type(realresult) is type(result))

        # if the original is returned make sure that

        # this doesn't happen with subclasses

        if realresult is object:

            class usub(unicode):

                def __repr__(self):

                    return 'usub(%r)' % unicode.__repr__(self)

            object = usub(object)

            method = getattr(object, methodname)

            realresult = method(*args)

            self.assertEqual(realresult, result)

            self.assert_(object is not realresult)

    def test_literals(self):

        self.assertEqual(u'\xff', u'\u00ff')

        self.assertEqual(u'\uffff', u'\U0000ffff')

        self.assertRaises(SyntaxError, eval, 'u\'\\Ufffffffe\'')

        self.assertRaises(SyntaxError, eval, 'u\'\\Uffffffff\'')

        self.assertRaises(SyntaxError, eval, 'u\'\\U%08x\'' % 0x110000)

    def test_repr(self):

        if not sys.platform.startswith('java'):

            # Test basic sanity of repr()

            self.assertEqual(repr(u'abc'), "u'abc'")

            self.assertEqual(repr(u'ab\\c'), "u'ab\\\\c'")

            self.assertEqual(repr(u'ab\\'), "u'ab\\\\'")

            self.assertEqual(repr(u'\\c'), "u'\\\\c'")

            self.assertEqual(repr(u'\\'), "u'\\\\'")

            self.assertEqual(repr(u'\n'), "u'\\n'")

            self.assertEqual(repr(u'\r'), "u'\\r'")

            self.assertEqual(repr(u'\t'), "u'\\t'")

            self.assertEqual(repr(u'\b'), "u'\\x08'")

            self.assertEqual(repr(u"'\""), """u'\\'"'""")

            self.assertEqual(repr(u"'\""), """u'\\'"'""")

            self.assertEqual(repr(u"'"), '''u"'"''')

            self.assertEqual(repr(u'"'), """u'"'""")

            latin1repr = (

                "u'\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\x08\\t\\n\\x0b\\x0c\\r"

                "\\x0e\\x0f\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a"

                "\\x1b\\x1c\\x1d\\x1e\\x1f !\"#$%&\\'()*+,-./0123456789:;<=>?@ABCDEFGHI"

                "JKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\\x7f"

                "\\x80\\x81\\x82\\x83\\x84\\x85\\x86\\x87\\x88\\x89\\x8a\\x8b\\x8c\\x8d"

                "\\x8e\\x8f\\x90\\x91\\x92\\x93\\x94\\x95\\x96\\x97\\x98\\x99\\x9a\\x9b"

                "\\x9c\\x9d\\x9e\\x9f\\xa0\\xa1\\xa2\\xa3\\xa4\\xa5\\xa6\\xa7\\xa8\\xa9"

                "\\xaa\\xab\\xac\\xad\\xae\\xaf\\xb0\\xb1\\xb2\\xb3\\xb4\\xb5\\xb6\\xb7"

                "\\xb8\\xb9\\xba\\xbb\\xbc\\xbd\\xbe\\xbf\\xc0\\xc1\\xc2\\xc3\\xc4\\xc5"

                "\\xc6\\xc7\\xc8\\xc9\\xca\\xcb\\xcc\\xcd\\xce\\xcf\\xd0\\xd1\\xd2\\xd3"

                "\\xd4\\xd5\\xd6\\xd7\\xd8\\xd9\\xda\\xdb\\xdc\\xdd\\xde\\xdf\\xe0\\xe1"

                "\\xe2\\xe3\\xe4\\xe5\\xe6\\xe7\\xe8\\xe9\\xea\\xeb\\xec\\xed\\xee\\xef"

                "\\xf0\\xf1\\xf2\\xf3\\xf4\\xf5\\xf6\\xf7\\xf8\\xf9\\xfa\\xfb\\xfc\\xfd"

                "\\xfe\\xff'")

            testrepr = repr(u''.join(map(unichr, xrange(256))))

            self.assertEqual(testrepr, latin1repr)

            # Test repr works on wide unicode escapes without overflow.

            self.assertEqual(repr(u"\U00010000" * 39 + u"\uffff" * 4096),

                             repr(u"\U00010000" * 39 + u"\uffff" * 4096))

    def test_count(self):

        string_tests.CommonTest.test_count(self)

        # check mixed argument types

        self.checkequalnofix(3,  'aaa', 'count', u'a')

        self.checkequalnofix(0,  'aaa', 'count', u'b')

        self.checkequalnofix(3, u'aaa', 'count',  'a')

        self.checkequalnofix(0, u'aaa', 'count',  'b')

        self.checkequalnofix(0, u'aaa', 'count',  'b')

        self.checkequalnofix(1, u'aaa', 'count',  'a', -1)

        self.checkequalnofix(3, u'aaa', 'count',  'a', -10)

        self.checkequalnofix(2, u'aaa', 'count',  'a', 0, -1)

        self.checkequalnofix(0, u'aaa', 'count',  'a', 0, -10)

    def test_find(self):

        self.checkequalnofix(0,  u'abcdefghiabc', 'find', u'abc')

        self.checkequalnofix(9,  u'abcdefghiabc', 'find', u'abc', 1)

        self.checkequalnofix(-1, u'abcdefghiabc', 'find', u'def', 4)

        self.assertRaises(TypeError, u'hello'.find)

        self.assertRaises(TypeError, u'hello'.find, 42)

    def test_rfind(self):

        string_tests.CommonTest.test_rfind(self)

        # check mixed argument types

        self.checkequalnofix(9,   'abcdefghiabc', 'rfind', u'abc')

        self.checkequalnofix(12,  'abcdefghiabc', 'rfind', u'')

        self.checkequalnofix(12, u'abcdefghiabc', 'rfind',  '')

    def test_index(self):

        string_tests.CommonTest.test_index(self)

        # check mixed argument types

        for (t1, t2) in ((str, unicode), (unicode, str)):

            self.checkequalnofix(0, t1('abcdefghiabc'), 'index',  t2(''))

            self.checkequalnofix(3, t1('abcdefghiabc'), 'index',  t2('def'))

            self.checkequalnofix(0, t1('abcdefghiabc'), 'index',  t2('abc'))

            self.checkequalnofix(9, t1('abcdefghiabc'), 'index',  t2('abc'), 1)

            self.assertRaises(ValueError, t1('abcdefghiabc').index, t2('hib'))

            self.assertRaises(ValueError, t1('abcdefghiab').index,  t2('abc'), 1)

            self.assertRaises(ValueError, t1('abcdefghi').index,  t2('ghi'), 8)

            self.assertRaises(ValueError, t1('abcdefghi').index,  t2('ghi'), -1)

    def test_rindex(self):

        string_tests.CommonTest.test_rindex(self)

        # check mixed argument types

        for (t1, t2) in ((str, unicode), (unicode, str)):

            self.checkequalnofix(12, t1('abcdefghiabc'), 'rindex',  t2(''))

            self.checkequalnofix(3,  t1('abcdefghiabc'), 'rindex',  t2('def'))

            self.checkequalnofix(9,  t1('abcdefghiabc'), 'rindex',  t2('abc'))

            self.checkequalnofix(0,  t1('abcdefghiabc'), 'rindex',  t2('abc'), 0, -1)

            self.assertRaises(ValueError, t1('abcdefghiabc').rindex,  t2('hib'))

            self.assertRaises(ValueError, t1('defghiabc').rindex,  t2('def'), 1)

            self.assertRaises(ValueError, t1('defghiabc').rindex,  t2('abc'), 0, -1)

            self.assertRaises(ValueError, t1('abcdefghi').rindex,  t2('ghi'), 0, 8)

            self.assertRaises(ValueError, t1('abcdefghi').rindex,  t2('ghi'), 0, -1)

    def test_translate(self):

        self.checkequalnofix(u'bbbc', u'abababc', 'translate', {ord('a'):None})

        self.checkequalnofix(u'iiic', u'abababc', 'translate', {ord('a'):None, ord('b'):ord('i')})

        self.checkequalnofix(u'iiix', u'abababc', 'translate', {ord('a'):None, ord('b'):ord('i'), ord('c'):u'x'})

        self.checkequalnofix(u'<i><i><i>c', u'abababc', 'translate', {ord('a'):None, ord('b'):u'<i>'})

        self.checkequalnofix(u'c', u'abababc', 'translate', {ord('a'):None, ord('b'):u''})

        self.checkequalnofix(u'xyyx', u'xzx', 'translate', {ord('z'):u'yy'})

        self.assertRaises(TypeError, u'hello'.translate)

        self.assertRaises(TypeError, u'abababc'.translate, {ord('a'):''})

    def test_split(self):

        string_tests.CommonTest.test_split(self)

        # Mixed arguments

        self.checkequalnofix([u'a', u'b', u'c', u'd'], u'a//b//c//d', 'split', '//')

        self.checkequalnofix([u'a', u'b', u'c', u'd'], 'a//b//c//d', 'split', u'//')

        self.checkequalnofix([u'endcase ', u''], u'endcase test', 'split', 'test')

    def test_join(self):

        string_tests.MixinStrUnicodeUserStringTest.test_join(self)

        # mixed arguments

        self.checkequalnofix(u'a b c d', u' ', 'join', ['a', 'b', u'c', u'd'])

        self.checkequalnofix(u'abcd', u'', 'join', (u'a', u'b', u'c', u'd'))

        self.checkequalnofix(u'w x y z', u' ', 'join', string_tests.Sequence('wxyz'))

        self.checkequalnofix(u'a b c d', ' ', 'join', [u'a', u'b', u'c', u'd'])

        self.checkequalnofix(u'a b c d', ' ', 'join', ['a', 'b', u'c', u'd'])

        self.checkequalnofix(u'abcd', '', 'join', (u'a', u'b', u'c', u'd'))

        self.checkequalnofix(u'w x y z', ' ', 'join', string_tests.Sequence(u'wxyz'))

    def test_strip(self):

        string_tests.CommonTest.test_strip(self)

        self.assertRaises(UnicodeError, u"hello".strip, "\xff")

    def test_replace(self):

        string_tests.CommonTest.test_replace(self)

        # method call forwarded from str implementation because of unicode argument

        self.checkequalnofix(u'one@two!three!', 'one!two!three!', 'replace', u'!', u'@', 1)

        self.assertRaises(TypeError, 'replace'.replace, u"r", 42)

    def test_comparison(self):

        # Comparisons:

        self.assertEqual(u'abc', 'abc')

        self.assertEqual('abc', u'abc')

        self.assertEqual(u'abc', u'abc')

        self.assert_(u'abcd' > 'abc')

        self.assert_('abcd' > u'abc')

        self.assert_(u'abcd' > u'abc')

        self.assert_(u'abc' < 'abcd')

        self.assert_('abc' < u'abcd')

        self.assert_(u'abc' < u'abcd')

        if 0:

            # Move these tests to a Unicode collation module test...

            # Testing UTF-16 code point order comparisons...

            # No surrogates, no fixup required.

            self.assert_(u'\u0061' < u'\u20ac')

            # Non surrogate below surrogate value, no fixup required

            self.assert_(u'\u0061' < u'\ud800\udc02')

            # Non surrogate above surrogate value, fixup required

            def test_lecmp(s, s2):

                self.assert_(s < s2)

            def test_fixup(s):

                s2 = u'\ud800\udc01'

                test_lecmp(s, s2)

                s2 = u'\ud900\udc01'

                test_lecmp(s, s2)

                s2 = u'\uda00\udc01'

                test_lecmp(s, s2)

                s2 = u'\udb00\udc01'

                test_lecmp(s, s2)

                s2 = u'\ud800\udd01'

                test_lecmp(s, s2)

                s2 = u'\ud900\udd01'

                test_lecmp(s, s2)

                s2 = u'\uda00\udd01'

                test_lecmp(s, s2)

                s2 = u'\udb00\udd01'

                test_lecmp(s, s2)

                s2 = u'\ud800\ude01'

                test_lecmp(s, s2)

                s2 = u'\ud900\ude01'

                test_lecmp(s, s2)

                s2 = u'\uda00\ude01'

                test_lecmp(s, s2)

                s2 = u'\udb00\ude01'

                test_lecmp(s, s2)

                s2 = u'\ud800\udfff'

                test_lecmp(s, s2)

                s2 = u'\ud900\udfff'

                test_lecmp(s, s2)

                s2 = u'\uda00\udfff'

                test_lecmp(s, s2)

                s2 = u'\udb00\udfff'

                test_lecmp(s, s2)

                test_fixup(u'\ue000')

                test_fixup(u'\uff61')

        # Surrogates on both sides, no fixup required

        self.assert_(u'\ud800\udc02' < u'\ud84d\udc56')

    def test_islower(self):

        string_tests.MixinStrUnicodeUserStringTest.test_islower(self)

        self.checkequalnofix(False, u'\u1FFc', 'islower')

    def test_isupper(self):

        string_tests.MixinStrUnicodeUserStringTest.test_isupper(self)

        if not sys.platform.startswith('java'):

            self.checkequalnofix(False, u'\u1FFc', 'isupper')

    def test_istitle(self):

        string_tests.MixinStrUnicodeUserStringTest.test_title(self)

        self.checkequalnofix(True, u'\u1FFc', 'istitle')

        self.checkequalnofix(True, u'Greek \u1FFcitlecases ...', 'istitle')

    def test_isspace(self):

        string_tests.MixinStrUnicodeUserStringTest.test_isspace(self)

        self.checkequalnofix(True, u'\u2000', 'isspace')

        self.checkequalnofix(True, u'\u200a', 'isspace')

        self.checkequalnofix(False, u'\u2014', 'isspace')

    def test_isalpha(self):

        string_tests.MixinStrUnicodeUserStringTest.test_isalpha(self)

        self.checkequalnofix(True, u'\u1FFc', 'isalpha')

    def test_isdecimal(self):

        self.checkequalnofix(False, u'', 'isdecimal')

        self.checkequalnofix(False, u'a', 'isdecimal')

        self.checkequalnofix(True, u'0', 'isdecimal')

        self.checkequalnofix(False, u'\u2460', 'isdecimal') # CIRCLED DIGIT ONE

        self.checkequalnofix(False, u'\xbc', 'isdecimal') # VULGAR FRACTION ONE QUARTER

        self.checkequalnofix(True, u'\u0660', 'isdecimal') # ARABIC-INDIC DIGIT ZERO

        self.checkequalnofix(True, u'0123456789', 'isdecimal')

        self.checkequalnofix(False, u'0123456789a', 'isdecimal')

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

    def test_isdigit(self):

        string_tests.MixinStrUnicodeUserStringTest.test_isdigit(self)

        self.checkequalnofix(True, u'\u2460', 'isdigit')

        self.checkequalnofix(False, u'\xbc', 'isdigit')

        self.checkequalnofix(True, u'\u0660', 'isdigit')

    def test_isnumeric(self):

        self.checkequalnofix(False, u'', 'isnumeric')

        self.checkequalnofix(False, u'a', 'isnumeric')

        self.checkequalnofix(True, u'0', 'isnumeric')

        self.checkequalnofix(True, u'\u2460', 'isnumeric')

        self.checkequalnofix(True, u'\xbc', 'isnumeric')

        self.checkequalnofix(True, u'\u0660', 'isnumeric')

        self.checkequalnofix(True, u'0123456789', 'isnumeric')

        self.checkequalnofix(False, u'0123456789a', 'isnumeric')

        self.assertRaises(TypeError, u"abc".isnumeric, 42)

    def test_contains(self):

        # Testing Unicode contains method

        self.assert_('a' in u'abdb')

        self.assert_('a' in u'bdab')

        self.assert_('a' in u'bdaba')

        self.assert_('a' in u'bdba')

        self.assert_('a' in u'bdba')

        self.assert_(u'a' in u'bdba')

        self.assert_(u'a' not in u'bdb')

        self.assert_(u'a' not in 'bdb')

        self.assert_(u'a' in 'bdba')

        self.assert_(u'a' in ('a',1,None))

        self.assert_(u'a' in (1,None,'a'))

        self.assert_(u'a' in (1,None,u'a'))

        self.assert_('a' in ('a',1,None))

        self.assert_('a' in (1,None,'a'))

        self.assert_('a' in (1,None,u'a'))

        self.assert_('a' not in ('x',1,u'y'))

        self.assert_('a' not in ('x',1,None))

        self.assert_(u'abcd' not in u'abcxxxx')

        self.assert_(u'ab' in u'abcd')

        self.assert_('ab' in u'abc')

        self.assert_(u'ab' in 'abc')

        self.assert_(u'ab' in (1,None,u'ab'))

        self.assert_(u'' in u'abc')

        self.assert_('' in u'abc')

        # If the following fails either

        # the contains operator does not propagate UnicodeErrors or

        # someone has changed the default encoding

        self.assertRaises(UnicodeError, 'g\xe2teau'.__contains__, u'\xe2')

        self.assert_(u'' in '')

        self.assert_('' in u'')

        self.assert_(u'' in u'')

        self.assert_(u'' in 'abc')

        self.assert_('' in u'abc')

        self.assert_(u'' in u'abc')

        self.assert_(u'\0' not in 'abc')

        self.assert_('\0' not in u'abc')

        self.assert_(u'\0' not in u'abc')

        self.assert_(u'\0' in '\0abc')

        self.assert_('\0' in u'\0abc')

        self.assert_(u'\0' in u'\0abc')

        self.assert_(u'\0' in 'abc\0')

        self.assert_('\0' in u'abc\0')

        self.assert_(u'\0' in u'abc\0')

        self.assert_(u'a' in '\0abc')

        self.assert_('a' in u'\0abc')

        self.assert_(u'a' in u'\0abc')

        self.assert_(u'asdf' in 'asdf')

        self.assert_('asdf' in u'asdf')

        self.assert_(u'asdf' in u'asdf')

        self.assert_(u'asdf' not in 'asd')

        self.assert_('asdf' not in u'asd')

        self.assert_(u'asdf' not in u'asd')

        self.assert_(u'asdf' not in '')

        self.assert_('asdf' not in u'')

        self.assert_(u'asdf' not in u'')

        self.assertRaises(TypeError, u"abc".__contains__)

    def test_formatting(self):

        string_tests.MixinStrUnicodeUserStringTest.test_formatting(self)

        # Testing Unicode formatting strings...

        self.assertEqual(u"%s, %s" % (u"abc", "abc"), u'abc, abc')

        self.assertEqual(u"%s, %s, %i, %f, %5.2f" % (u"abc", "abc", 1, 2, 3), u'abc, abc, 1, 2.000000,  3.00')

        self.assertEqual(u"%s, %s, %i, %f, %5.2f" % (u"abc", "abc", 1, -2, 3), u'abc, abc, 1, -2.000000,  3.00')

        self.assertEqual(u"%s, %s, %i, %f, %5.2f" % (u"abc", "abc", -1, -2, 3.5), u'abc, abc, -1, -2.000000,  3.50')

        self.assertEqual(u"%s, %s, %i, %f, %5.2f" % (u"abc", "abc", -1, -2, 3.57), u'abc, abc, -1, -2.000000,  3.57')

        self.assertEqual(u"%s, %s, %i, %f, %5.2f" % (u"abc", "abc", -1, -2, 1003.57), u'abc, abc, -1, -2.000000, 1003.57')

        if not sys.platform.startswith('java'):

            self.assertEqual(u"%r, %r" % (u"abc", "abc"), u"u'abc', 'abc'")

        self.assertEqual(u"%(x)s, %(y)s" % {'x':u"abc", 'y':"def"}, u'abc, def')

        self.assertEqual(u"%(x)s, %(\xfc)s" % {'x':u"abc", u'\xfc':"def"}, u'abc, def')

        self.assertEqual(u'%c' % 0x1234, u'\u1234')

        self.assertRaises(OverflowError, u"%c".__mod__, (sys.maxunicode+1,))

        # formatting jobs delegated from the string implementation:

        self.assertEqual('...%(foo)s...' % {'foo':u"abc"}, u'...abc...')

        self.assertEqual('...%(foo)s...' % {'foo':"abc"}, '...abc...')

        self.assertEqual('...%(foo)s...' % {u'foo':"abc"}, '...abc...')

        self.assertEqual('...%(foo)s...' % {u'foo':u"abc"}, u'...abc...')

        self.assertEqual('...%(foo)s...' % {u'foo':u"abc",'def':123},  u'...abc...')

        self.assertEqual('...%(foo)s...' % {u'foo':u"abc",u'def':123}, u'...abc...')

        self.assertEqual('...%s...%s...%s...%s...' % (1,2,3,u"abc"), u'...1...2...3...abc...')

        self.assertEqual('...%%...%%s...%s...%s...%s...%s...' % (1,2,3,u"abc"), u'...%...%s...1...2...3...abc...')

        self.assertEqual('...%s...' % u"abc", u'...abc...')

        self.assertEqual('%*s' % (5,u'abc',), u'  abc')

        self.assertEqual('%*s' % (-5,u'abc',), u'abc  ')

        self.assertEqual('%*.*s' % (5,2,u'abc',), u'   ab')

        self.assertEqual('%*.*s' % (5,3,u'abc',), u'  abc')

        self.assertEqual('%i %*.*s' % (10, 5,3,u'abc',), u'10   abc')

        self.assertEqual('%i%s %*.*s' % (10, 3, 5, 3, u'abc',), u'103   abc')

        self.assertEqual('%c' % u'a', u'a')

        class Wrapper:

            def __str__(self):

                return u'\u1234'

        self.assertEqual('%s' % Wrapper(), u'\u1234')

    @test_support.run_with_locale('LC_ALL', 'de_DE', 'fr_FR')

    def test_format_float(self):

        # should not format with a comma, but always with C locale

        self.assertEqual(u'1.0', u'%.1f' % 1.0)

    def test_constructor(self):

        # unicode(obj) tests (this maps to PyObject_Unicode() at C level)

        self.assertEqual(

            unicode(u'unicode remains unicode'),

            u'unicode remains unicode'

        )

        class UnicodeSubclass(unicode):

            pass

        self.assertEqual(

            unicode(UnicodeSubclass('unicode subclass becomes unicode')),

            u'unicode subclass becomes unicode'

        )

        self.assertEqual(

            unicode('strings are converted to unicode'),

            u'strings are converted to unicode'

        )

        class UnicodeCompat:

            def __init__(self, x):

                self.x = x

            def __unicode__(self):

                return self.x

        self.assertEqual(

            unicode(UnicodeCompat('__unicode__ compatible objects are recognized')),

            u'__unicode__ compatible objects are recognized')

        class StringCompat:

            def __init__(self, x):

                self.x = x

            def __str__(self):

                return self.x

        self.assertEqual(

            unicode(StringCompat('__str__ compatible objects are recognized')),

            u'__str__ compatible objects are recognized'

        )

        # unicode(obj) is compatible to str():

        o = StringCompat('unicode(obj) is compatible to str()')

        self.assertEqual(unicode(o), u'unicode(obj) is compatible to str()')

        self.assertEqual(str(o), 'unicode(obj) is compatible to str()')

        # %-formatting and .__unicode__()

        self.assertEqual(u'%s' %

                         UnicodeCompat(u"u'%s' % obj uses obj.__unicode__()"),

                         u"u'%s' % obj uses obj.__unicode__()")

        self.assertEqual(u'%s' %

                         UnicodeCompat(u"u'%s' % obj falls back to obj.__str__()"),

                         u"u'%s' % obj falls back to obj.__str__()")

        for obj in (123, 123.45, 123L):

            self.assertEqual(unicode(obj), unicode(str(obj)))

        # unicode(obj, encoding, error) tests (this maps to

        # PyUnicode_FromEncodedObject() at C level)

        if not sys.platform.startswith('java'):

            self.assertRaises(

                TypeError,

                unicode,

                u'decoding unicode is not supported',

                'utf-8',

                'strict'

            )

        self.assertEqual(

            unicode('strings are decoded to unicode', 'utf-8', 'strict'),

            u'strings are decoded to unicode'

        )

        if not sys.platform.startswith('java'):

            self.assertEqual(

                unicode(

                    buffer('character buffers are decoded to unicode'),

                    'utf-8',

                    'strict'

                ),

                u'character buffers are decoded to unicode'

            )

        self.assertRaises(TypeError, unicode, 42, 42, 42)

    def test_codecs_utf7(self):

        utfTests = [

            (u'A\u2262\u0391.', 'A+ImIDkQ.'),             # RFC2152 example

            (u'Hi Mom -\u263a-!', 'Hi Mom -+Jjo--!'),     # RFC2152 example

            (u'\u65E5\u672C\u8A9E', '+ZeVnLIqe-'),        # RFC2152 example

            (u'Item 3 is \u00a31.', 'Item 3 is +AKM-1.'), # RFC2152 example

            (u'+', '+-'),

            (u'+-', '+--'),

            (u'+?', '+-?'),

            (u'\?', '+AFw?'),

            (u'+?', '+-?'),

            (ur'\\?', '+AFwAXA?'),

            (ur'\\\?', '+AFwAXABc?'),

            (ur'++--', '+-+---')

        ]

        for (x, y) in utfTests:

            self.assertEqual(x.encode('utf-7'), y)