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2749 lines (2451 loc) · 124 KB
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""" Test script for the Unicode implementation.
Written by Marc-Andre Lemburg (mal@lemburg.com).
(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
"""
import _string
import codecs
import itertools
import operator
import pickle
import struct
import sys
import textwrap
import unicodedata
import unittest
import warnings
from test.support import warnings_helper
from test import support, string_tests
from test.support.script_helper import assert_python_failure
try:
import _testcapi
except ImportError:
_testcapi = None
# 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
def duplicate_string(text):
"""
Try to get a fresh clone of the specified text:
new object with a reference count of 1.
This is a best-effort: latin1 single letters and the empty
string ('') are singletons and cannot be cloned.
"""
return text.encode().decode()
class StrSubclass(str):
pass
class OtherStrSubclass(str):
pass
class WithStr:
def __init__(self, value):
self.value = value
def __str__(self):
return self.value
class WithRepr:
def __init__(self, value):
self.value = value
def __repr__(self):
return self.value
class StrTest(string_tests.StringLikeTest,
string_tests.MixinStrUnicodeTest,
unittest.TestCase):
type2test = str
def setUp(self):
codecs.register(search_function)
self.addCleanup(codecs.unregister, search_function)
def checkequalnofix(self, result, object, methodname, *args):
method = getattr(object, methodname)
realresult = method(*args)
self.assertEqual(realresult, result)
self.assertTrue(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(str):
def __repr__(self):
return 'usub(%r)' % str.__repr__(self)
object = usub(object)
method = getattr(object, methodname)
realresult = method(*args)
self.assertEqual(realresult, result)
self.assertTrue(object is not realresult)
def assertTypedEqual(self, actual, expected):
self.assertIs(type(actual), type(expected))
self.assertEqual(actual, expected)
def test_literals(self):
self.assertEqual('\xff', '\u00ff')
self.assertEqual('\uffff', '\U0000ffff')
self.assertRaises(SyntaxError, eval, '\'\\Ufffffffe\'')
self.assertRaises(SyntaxError, eval, '\'\\Uffffffff\'')
self.assertRaises(SyntaxError, eval, '\'\\U%08x\'' % 0x110000)
# raw strings should not have unicode escapes
self.assertNotEqual(r"\u0020", " ")
def test_ascii(self):
self.assertEqual(ascii('abc'), "'abc'")
self.assertEqual(ascii('ab\\c'), "'ab\\\\c'")
self.assertEqual(ascii('ab\\'), "'ab\\\\'")
self.assertEqual(ascii('\\c'), "'\\\\c'")
self.assertEqual(ascii('\\'), "'\\\\'")
self.assertEqual(ascii('\n'), "'\\n'")
self.assertEqual(ascii('\r'), "'\\r'")
self.assertEqual(ascii('\t'), "'\\t'")
self.assertEqual(ascii('\b'), "'\\x08'")
self.assertEqual(ascii("'\""), """'\\'"'""")
self.assertEqual(ascii("'\""), """'\\'"'""")
self.assertEqual(ascii("'"), '''"'"''')
self.assertEqual(ascii('"'), """'"'""")
latin1repr = (
"'\\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 = ascii(''.join(map(chr, range(256))))
self.assertEqual(testrepr, latin1repr)
# Test ascii works on wide unicode escapes without overflow.
self.assertEqual(ascii("\U00010000" * 39 + "\uffff" * 4096),
ascii("\U00010000" * 39 + "\uffff" * 4096))
self.assertTypedEqual(ascii('\U0001f40d'), r"'\U0001f40d'")
self.assertTypedEqual(ascii(StrSubclass('abc')), "'abc'")
self.assertTypedEqual(ascii(WithRepr('<abc>')), '<abc>')
self.assertTypedEqual(ascii(WithRepr(StrSubclass('<abc>'))), StrSubclass('<abc>'))
self.assertTypedEqual(ascii(WithRepr('<\U0001f40d>')), r'<\U0001f40d>')
self.assertTypedEqual(ascii(WithRepr(StrSubclass('<\U0001f40d>'))), r'<\U0001f40d>')
self.assertRaises(TypeError, ascii, WithRepr(b'byte-repr'))
def test_repr(self):
# Test basic sanity of repr()
self.assertEqual(repr('abc'), "'abc'")
self.assertEqual(repr('ab\\c'), "'ab\\\\c'")
self.assertEqual(repr('ab\\'), "'ab\\\\'")
self.assertEqual(repr('\\c'), "'\\\\c'")
self.assertEqual(repr('\\'), "'\\\\'")
self.assertEqual(repr('\n'), "'\\n'")
self.assertEqual(repr('\r'), "'\\r'")
self.assertEqual(repr('\t'), "'\\t'")
self.assertEqual(repr('\b'), "'\\x08'")
self.assertEqual(repr("'\""), """'\\'"'""")
self.assertEqual(repr("'\""), """'\\'"'""")
self.assertEqual(repr("'"), '''"'"''')
self.assertEqual(repr('"'), """'"'""")
latin1repr = (
"'\\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(''.join(map(chr, range(256))))
self.assertEqual(testrepr, latin1repr)
# Test repr works on wide unicode escapes without overflow.
self.assertEqual(repr("\U00010000" * 39 + "\uffff" * 4096),
repr("\U00010000" * 39 + "\uffff" * 4096))
self.assertTypedEqual(repr('\U0001f40d'), "'\U0001f40d'")
self.assertTypedEqual(repr(StrSubclass('abc')), "'abc'")
self.assertTypedEqual(repr(WithRepr('<abc>')), '<abc>')
self.assertTypedEqual(repr(WithRepr(StrSubclass('<abc>'))), StrSubclass('<abc>'))
self.assertTypedEqual(repr(WithRepr('<\U0001f40d>')), '<\U0001f40d>')
self.assertTypedEqual(repr(WithRepr(StrSubclass('<\U0001f40d>'))), StrSubclass('<\U0001f40d>'))
self.assertRaises(TypeError, repr, WithRepr(b'byte-repr'))
def test_iterators(self):
# Make sure unicode objects have an __iter__ method
it = "\u1111\u2222\u3333".__iter__()
self.assertEqual(next(it), "\u1111")
self.assertEqual(next(it), "\u2222")
self.assertEqual(next(it), "\u3333")
self.assertRaises(StopIteration, next, it)
def test_iterators_invocation(self):
cases = [type(iter('abc')), type(iter('🚀'))]
for cls in cases:
with self.subTest(cls=cls):
self.assertRaises(TypeError, cls)
def test_iteration(self):
cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
for case in cases:
with self.subTest(string=case):
self.assertEqual(case, "".join(iter(case)))
def test_exhausted_iterator(self):
cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
for case in cases:
with self.subTest(case=case):
iterator = iter(case)
tuple(iterator)
self.assertRaises(StopIteration, next, iterator)
def test_pickle_iterator(self):
cases = ['abc', '🚀🚀🚀', "\u1111\u2222\u3333"]
for case in cases:
with self.subTest(case=case):
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
it = iter(case)
with self.subTest(proto=proto):
pickled = "".join(pickle.loads(pickle.dumps(it, proto)))
self.assertEqual(case, pickled)
def test_count(self):
string_tests.StringLikeTest.test_count(self)
# check mixed argument types
self.checkequalnofix(3, 'aaa', 'count', 'a')
self.checkequalnofix(0, 'aaa', 'count', 'b')
self.checkequalnofix(3, 'aaa', 'count', 'a')
self.checkequalnofix(0, 'aaa', 'count', 'b')
self.checkequalnofix(0, 'aaa', 'count', 'b')
self.checkequalnofix(1, 'aaa', 'count', 'a', -1)
self.checkequalnofix(3, 'aaa', 'count', 'a', -10)
self.checkequalnofix(2, 'aaa', 'count', 'a', 0, -1)
self.checkequalnofix(0, 'aaa', 'count', 'a', 0, -10)
# test mixed kinds
self.checkequal(10, '\u0102' + 'a' * 10, 'count', 'a')
self.checkequal(10, '\U00100304' + 'a' * 10, 'count', 'a')
self.checkequal(10, '\U00100304' + '\u0102' * 10, 'count', '\u0102')
self.checkequal(0, 'a' * 10, 'count', '\u0102')
self.checkequal(0, 'a' * 10, 'count', '\U00100304')
self.checkequal(0, '\u0102' * 10, 'count', '\U00100304')
self.checkequal(10, '\u0102' + 'a_' * 10, 'count', 'a_')
self.checkequal(10, '\U00100304' + 'a_' * 10, 'count', 'a_')
self.checkequal(10, '\U00100304' + '\u0102_' * 10, 'count', '\u0102_')
self.checkequal(0, 'a' * 10, 'count', 'a\u0102')
self.checkequal(0, 'a' * 10, 'count', 'a\U00100304')
self.checkequal(0, '\u0102' * 10, 'count', '\u0102\U00100304')
# test subclass
class MyStr(str):
pass
self.checkequal(3, MyStr('aaa'), 'count', 'a')
def test_find(self):
string_tests.StringLikeTest.test_find(self)
# test implementation details of the memchr fast path
self.checkequal(100, 'a' * 100 + '\u0102', 'find', '\u0102')
self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0201')
self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0120')
self.checkequal(-1, 'a' * 100 + '\u0102', 'find', '\u0220')
self.checkequal(100, 'a' * 100 + '\U00100304', 'find', '\U00100304')
self.checkequal(-1, 'a' * 100 + '\U00100304', 'find', '\U00100204')
self.checkequal(-1, 'a' * 100 + '\U00100304', 'find', '\U00102004')
# check mixed argument types
self.checkequalnofix(0, 'abcdefghiabc', 'find', 'abc')
self.checkequalnofix(9, 'abcdefghiabc', 'find', 'abc', 1)
self.checkequalnofix(-1, 'abcdefghiabc', 'find', 'def', 4)
# test utf-8 non-ascii char
self.checkequal(0, 'тест', 'find', 'т')
self.checkequal(3, 'тест', 'find', 'т', 1)
self.checkequal(-1, 'тест', 'find', 'т', 1, 3)
self.checkequal(-1, 'тест', 'find', 'e') # english `e`
# test utf-8 non-ascii slice
self.checkequal(1, 'тест тест', 'find', 'ес')
self.checkequal(1, 'тест тест', 'find', 'ес', 1)
self.checkequal(1, 'тест тест', 'find', 'ес', 1, 3)
self.checkequal(6, 'тест тест', 'find', 'ес', 2)
self.checkequal(-1, 'тест тест', 'find', 'ес', 6, 7)
self.checkequal(-1, 'тест тест', 'find', 'ес', 7)
self.checkequal(-1, 'тест тест', 'find', 'ec') # english `ec`
self.assertRaises(TypeError, 'hello'.find)
self.assertRaises(TypeError, 'hello'.find, 42)
# test mixed kinds
self.checkequal(100, '\u0102' * 100 + 'a', 'find', 'a')
self.checkequal(100, '\U00100304' * 100 + 'a', 'find', 'a')
self.checkequal(100, '\U00100304' * 100 + '\u0102', 'find', '\u0102')
self.checkequal(-1, 'a' * 100, 'find', '\u0102')
self.checkequal(-1, 'a' * 100, 'find', '\U00100304')
self.checkequal(-1, '\u0102' * 100, 'find', '\U00100304')
self.checkequal(100, '\u0102' * 100 + 'a_', 'find', 'a_')
self.checkequal(100, '\U00100304' * 100 + 'a_', 'find', 'a_')
self.checkequal(100, '\U00100304' * 100 + '\u0102_', 'find', '\u0102_')
self.checkequal(-1, 'a' * 100, 'find', 'a\u0102')
self.checkequal(-1, 'a' * 100, 'find', 'a\U00100304')
self.checkequal(-1, '\u0102' * 100, 'find', '\u0102\U00100304')
def test_rfind(self):
string_tests.StringLikeTest.test_rfind(self)
# test implementation details of the memrchr fast path
self.checkequal(0, '\u0102' + 'a' * 100 , 'rfind', '\u0102')
self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0201')
self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0120')
self.checkequal(-1, '\u0102' + 'a' * 100 , 'rfind', '\u0220')
self.checkequal(0, '\U00100304' + 'a' * 100, 'rfind', '\U00100304')
self.checkequal(-1, '\U00100304' + 'a' * 100, 'rfind', '\U00100204')
self.checkequal(-1, '\U00100304' + 'a' * 100, 'rfind', '\U00102004')
# check mixed argument types
self.checkequalnofix(9, 'abcdefghiabc', 'rfind', 'abc')
self.checkequalnofix(12, 'abcdefghiabc', 'rfind', '')
self.checkequalnofix(12, 'abcdefghiabc', 'rfind', '')
# test utf-8 non-ascii char
self.checkequal(1, 'тест', 'rfind', 'е')
self.checkequal(1, 'тест', 'rfind', 'е', 1)
self.checkequal(-1, 'тест', 'rfind', 'е', 2)
self.checkequal(-1, 'тест', 'rfind', 'e') # english `e`
# test utf-8 non-ascii slice
self.checkequal(6, 'тест тест', 'rfind', 'ес')
self.checkequal(6, 'тест тест', 'rfind', 'ес', 1)
self.checkequal(1, 'тест тест', 'rfind', 'ес', 1, 3)
self.checkequal(6, 'тест тест', 'rfind', 'ес', 2)
self.checkequal(-1, 'тест тест', 'rfind', 'ес', 6, 7)
self.checkequal(-1, 'тест тест', 'rfind', 'ес', 7)
self.checkequal(-1, 'тест тест', 'rfind', 'ec') # english `ec`
# test mixed kinds
self.checkequal(0, 'a' + '\u0102' * 100, 'rfind', 'a')
self.checkequal(0, 'a' + '\U00100304' * 100, 'rfind', 'a')
self.checkequal(0, '\u0102' + '\U00100304' * 100, 'rfind', '\u0102')
self.checkequal(-1, 'a' * 100, 'rfind', '\u0102')
self.checkequal(-1, 'a' * 100, 'rfind', '\U00100304')
self.checkequal(-1, '\u0102' * 100, 'rfind', '\U00100304')
self.checkequal(0, '_a' + '\u0102' * 100, 'rfind', '_a')
self.checkequal(0, '_a' + '\U00100304' * 100, 'rfind', '_a')
self.checkequal(0, '_\u0102' + '\U00100304' * 100, 'rfind', '_\u0102')
self.checkequal(-1, 'a' * 100, 'rfind', '\u0102a')
self.checkequal(-1, 'a' * 100, 'rfind', '\U00100304a')
self.checkequal(-1, '\u0102' * 100, 'rfind', '\U00100304\u0102')
def test_index(self):
string_tests.StringLikeTest.test_index(self)
self.checkequalnofix(0, 'abcdefghiabc', 'index', '')
self.checkequalnofix(3, 'abcdefghiabc', 'index', 'def')
self.checkequalnofix(0, 'abcdefghiabc', 'index', 'abc')
self.checkequalnofix(9, 'abcdefghiabc', 'index', 'abc', 1)
self.assertRaises(ValueError, 'abcdefghiabc'.index, 'hib')
self.assertRaises(ValueError, 'abcdefghiab'.index, 'abc', 1)
self.assertRaises(ValueError, 'abcdefghi'.index, 'ghi', 8)
self.assertRaises(ValueError, 'abcdefghi'.index, 'ghi', -1)
# test mixed kinds
self.checkequal(100, '\u0102' * 100 + 'a', 'index', 'a')
self.checkequal(100, '\U00100304' * 100 + 'a', 'index', 'a')
self.checkequal(100, '\U00100304' * 100 + '\u0102', 'index', '\u0102')
self.assertRaises(ValueError, ('a' * 100).index, '\u0102')
self.assertRaises(ValueError, ('a' * 100).index, '\U00100304')
self.assertRaises(ValueError, ('\u0102' * 100).index, '\U00100304')
self.checkequal(100, '\u0102' * 100 + 'a_', 'index', 'a_')
self.checkequal(100, '\U00100304' * 100 + 'a_', 'index', 'a_')
self.checkequal(100, '\U00100304' * 100 + '\u0102_', 'index', '\u0102_')
self.assertRaises(ValueError, ('a' * 100).index, 'a\u0102')
self.assertRaises(ValueError, ('a' * 100).index, 'a\U00100304')
self.assertRaises(ValueError, ('\u0102' * 100).index, '\u0102\U00100304')
def test_rindex(self):
string_tests.StringLikeTest.test_rindex(self)
self.checkequalnofix(12, 'abcdefghiabc', 'rindex', '')
self.checkequalnofix(3, 'abcdefghiabc', 'rindex', 'def')
self.checkequalnofix(9, 'abcdefghiabc', 'rindex', 'abc')
self.checkequalnofix(0, 'abcdefghiabc', 'rindex', 'abc', 0, -1)
self.assertRaises(ValueError, 'abcdefghiabc'.rindex, 'hib')
self.assertRaises(ValueError, 'defghiabc'.rindex, 'def', 1)
self.assertRaises(ValueError, 'defghiabc'.rindex, 'abc', 0, -1)
self.assertRaises(ValueError, 'abcdefghi'.rindex, 'ghi', 0, 8)
self.assertRaises(ValueError, 'abcdefghi'.rindex, 'ghi', 0, -1)
# test mixed kinds
self.checkequal(0, 'a' + '\u0102' * 100, 'rindex', 'a')
self.checkequal(0, 'a' + '\U00100304' * 100, 'rindex', 'a')
self.checkequal(0, '\u0102' + '\U00100304' * 100, 'rindex', '\u0102')
self.assertRaises(ValueError, ('a' * 100).rindex, '\u0102')
self.assertRaises(ValueError, ('a' * 100).rindex, '\U00100304')
self.assertRaises(ValueError, ('\u0102' * 100).rindex, '\U00100304')
self.checkequal(0, '_a' + '\u0102' * 100, 'rindex', '_a')
self.checkequal(0, '_a' + '\U00100304' * 100, 'rindex', '_a')
self.checkequal(0, '_\u0102' + '\U00100304' * 100, 'rindex', '_\u0102')
self.assertRaises(ValueError, ('a' * 100).rindex, '\u0102a')
self.assertRaises(ValueError, ('a' * 100).rindex, '\U00100304a')
self.assertRaises(ValueError, ('\u0102' * 100).rindex, '\U00100304\u0102')
def test_maketrans_translate(self):
# these work with plain translate()
self.checkequalnofix('bbbc', 'abababc', 'translate',
{ord('a'): None})
self.checkequalnofix('iiic', 'abababc', 'translate',
{ord('a'): None, ord('b'): ord('i')})
self.checkequalnofix('iiix', 'abababc', 'translate',
{ord('a'): None, ord('b'): ord('i'), ord('c'): 'x'})
self.checkequalnofix('c', 'abababc', 'translate',
{ord('a'): None, ord('b'): ''})
self.checkequalnofix('xyyx', 'xzx', 'translate',
{ord('z'): 'yy'})
# this needs maketrans()
self.checkequalnofix('abababc', 'abababc', 'translate',
{'b': '<i>'})
tbl = self.type2test.maketrans({'a': None, 'b': '<i>'})
self.checkequalnofix('<i><i><i>c', 'abababc', 'translate', tbl)
# test alternative way of calling maketrans()
tbl = self.type2test.maketrans('abc', 'xyz', 'd')
self.checkequalnofix('xyzzy', 'abdcdcbdddd', 'translate', tbl)
# various tests switching from ASCII to latin1 or the opposite;
# same length, remove a letter, or replace with a longer string.
self.assertEqual("[a]".translate(str.maketrans('a', 'X')),
"[X]")
self.assertEqual("[a]".translate(str.maketrans({'a': 'X'})),
"[X]")
self.assertEqual("[a]".translate(str.maketrans({'a': None})),
"[]")
self.assertEqual("[a]".translate(str.maketrans({'a': 'XXX'})),
"[XXX]")
self.assertEqual("[a]".translate(str.maketrans({'a': '\xe9'})),
"[\xe9]")
self.assertEqual('axb'.translate(str.maketrans({'a': None, 'b': '123'})),
"x123")
self.assertEqual('axb'.translate(str.maketrans({'a': None, 'b': '\xe9'})),
"x\xe9")
# test non-ASCII (don't take the fast-path)
self.assertEqual("[a]".translate(str.maketrans({'a': '<\xe9>'})),
"[<\xe9>]")
self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': 'a'})),
"[a]")
self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': None})),
"[]")
self.assertEqual("[\xe9]".translate(str.maketrans({'\xe9': '123'})),
"[123]")
self.assertEqual("[a\xe9]".translate(str.maketrans({'a': '<\u20ac>'})),
"[<\u20ac>\xe9]")
# invalid Unicode characters
invalid_char = 0x10ffff+1
for before in "a\xe9\u20ac\U0010ffff":
mapping = str.maketrans({before: invalid_char})
text = "[%s]" % before
self.assertRaises(ValueError, text.translate, mapping)
# errors
self.assertRaises(TypeError, self.type2test.maketrans)
self.assertRaises(ValueError, self.type2test.maketrans, 'abc', 'defg')
self.assertRaises(TypeError, self.type2test.maketrans, 2, 'def')
self.assertRaises(TypeError, self.type2test.maketrans, 'abc', 2)
self.assertRaises(TypeError, self.type2test.maketrans, 'abc', 'def', 2)
self.assertRaises(ValueError, self.type2test.maketrans, {'xy': 2})
self.assertRaises(TypeError, self.type2test.maketrans, {(1,): 2})
self.assertRaises(TypeError, 'hello'.translate)
self.assertRaises(TypeError, 'abababc'.translate, 'abc', 'xyz')
def test_split(self):
string_tests.StringLikeTest.test_split(self)
# test mixed kinds
for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
left *= 9
right *= 9
for delim in ('c', '\u0102', '\U00010302'):
self.checkequal([left + right],
left + right, 'split', delim)
self.checkequal([left, right],
left + delim + right, 'split', delim)
self.checkequal([left + right],
left + right, 'split', delim * 2)
self.checkequal([left, right],
left + delim * 2 + right, 'split', delim *2)
def test_rsplit(self):
string_tests.StringLikeTest.test_rsplit(self)
# test mixed kinds
for left, right in ('ba', 'юё', '\u0101\u0100', '\U00010301\U00010300'):
left *= 9
right *= 9
for delim in ('c', 'ы', '\u0102', '\U00010302'):
self.checkequal([left + right],
left + right, 'rsplit', delim)
self.checkequal([left, right],
left + delim + right, 'rsplit', delim)
self.checkequal([left + right],
left + right, 'rsplit', delim * 2)
self.checkequal([left, right],
left + delim * 2 + right, 'rsplit', delim *2)
# Check `None` as well:
self.checkequal([left + right],
left + right, 'rsplit', None)
def test_partition(self):
string_tests.StringLikeTest.test_partition(self)
# test mixed kinds
self.checkequal(('ABCDEFGH', '', ''), 'ABCDEFGH', 'partition', '\u4200')
for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
left *= 9
right *= 9
for delim in ('c', '\u0102', '\U00010302'):
self.checkequal((left + right, '', ''),
left + right, 'partition', delim)
self.checkequal((left, delim, right),
left + delim + right, 'partition', delim)
self.checkequal((left + right, '', ''),
left + right, 'partition', delim * 2)
self.checkequal((left, delim * 2, right),
left + delim * 2 + right, 'partition', delim * 2)
def test_rpartition(self):
string_tests.StringLikeTest.test_rpartition(self)
# test mixed kinds
self.checkequal(('', '', 'ABCDEFGH'), 'ABCDEFGH', 'rpartition', '\u4200')
for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
left *= 9
right *= 9
for delim in ('c', '\u0102', '\U00010302'):
self.checkequal(('', '', left + right),
left + right, 'rpartition', delim)
self.checkequal((left, delim, right),
left + delim + right, 'rpartition', delim)
self.checkequal(('', '', left + right),
left + right, 'rpartition', delim * 2)
self.checkequal((left, delim * 2, right),
left + delim * 2 + right, 'rpartition', delim * 2)
def test_join(self):
string_tests.StringLikeTest.test_join(self)
class MyWrapper:
def __init__(self, sval): self.sval = sval
def __str__(self): return self.sval
# mixed arguments
self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
self.checkequalnofix('abcd', '', 'join', ('a', 'b', 'c', 'd'))
self.checkequalnofix('w x y z', ' ', 'join', string_tests.Sequence('wxyz'))
self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
self.checkequalnofix('a b c d', ' ', 'join', ['a', 'b', 'c', 'd'])
self.checkequalnofix('abcd', '', 'join', ('a', 'b', 'c', 'd'))
self.checkequalnofix('w x y z', ' ', 'join', string_tests.Sequence('wxyz'))
self.checkraises(TypeError, ' ', 'join', ['1', '2', MyWrapper('foo')])
self.checkraises(TypeError, ' ', 'join', ['1', '2', '3', bytes()])
self.checkraises(TypeError, ' ', 'join', [1, 2, 3])
self.checkraises(TypeError, ' ', 'join', ['1', '2', 3])
@unittest.skipIf(sys.maxsize > 2**32,
'needs too much memory on a 64-bit platform')
def test_join_overflow(self):
size = int(sys.maxsize**0.5) + 1
seq = ('A' * size,) * size
self.assertRaises(OverflowError, ''.join, seq)
def test_replace(self):
string_tests.StringLikeTest.test_replace(self)
# method call forwarded from str implementation because of unicode argument
self.checkequalnofix('one@two!three!', 'one!two!three!', 'replace', '!', '@', 1)
self.assertRaises(TypeError, 'replace'.replace, "r", 42)
# test mixed kinds
for left, right in ('ba', '\u0101\u0100', '\U00010301\U00010300'):
left *= 9
right *= 9
for delim in ('c', '\u0102', '\U00010302'):
for repl in ('d', '\u0103', '\U00010303'):
self.checkequal(left + right,
left + right, 'replace', delim, repl)
self.checkequal(left + repl + right,
left + delim + right,
'replace', delim, repl)
self.checkequal(left + right,
left + right, 'replace', delim * 2, repl)
self.checkequal(left + repl + right,
left + delim * 2 + right,
'replace', delim * 2, repl)
@support.cpython_only
def test_replace_id(self):
pattern = 'abc'
text = 'abc def'
self.assertIs(text.replace(pattern, pattern), text)
def test_repeat_id_preserving(self):
a = '123abc1@'
b = '456zyx-+'
self.assertEqual(id(a), id(a))
self.assertNotEqual(id(a), id(b))
self.assertNotEqual(id(a), id(a * -4))
self.assertNotEqual(id(a), id(a * 0))
self.assertEqual(id(a), id(a * 1))
self.assertEqual(id(a), id(1 * a))
self.assertNotEqual(id(a), id(a * 2))
class SubStr(str):
pass
s = SubStr('qwerty()')
self.assertEqual(id(s), id(s))
self.assertNotEqual(id(s), id(s * -4))
self.assertNotEqual(id(s), id(s * 0))
self.assertNotEqual(id(s), id(s * 1))
self.assertNotEqual(id(s), id(1 * s))
self.assertNotEqual(id(s), id(s * 2))
def test_bytes_comparison(self):
with warnings_helper.check_warnings():
warnings.simplefilter('ignore', BytesWarning)
self.assertEqual('abc' == b'abc', False)
self.assertEqual('abc' != b'abc', True)
self.assertEqual('abc' == bytearray(b'abc'), False)
self.assertEqual('abc' != bytearray(b'abc'), True)
def test_comparison(self):
# Comparisons:
self.assertEqual('abc', 'abc')
self.assertTrue('abcd' > 'abc')
self.assertTrue('abc' < '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.assertTrue('\u0061' < '\u20ac')
# Non surrogate below surrogate value, no fixup required
self.assertTrue('\u0061' < '\ud800\udc02')
# Non surrogate above surrogate value, fixup required
def test_lecmp(s, s2):
self.assertTrue(s < s2)
def test_fixup(s):
s2 = '\ud800\udc01'
test_lecmp(s, s2)
s2 = '\ud900\udc01'
test_lecmp(s, s2)
s2 = '\uda00\udc01'
test_lecmp(s, s2)
s2 = '\udb00\udc01'
test_lecmp(s, s2)
s2 = '\ud800\udd01'
test_lecmp(s, s2)
s2 = '\ud900\udd01'
test_lecmp(s, s2)
s2 = '\uda00\udd01'
test_lecmp(s, s2)
s2 = '\udb00\udd01'
test_lecmp(s, s2)
s2 = '\ud800\ude01'
test_lecmp(s, s2)
s2 = '\ud900\ude01'
test_lecmp(s, s2)
s2 = '\uda00\ude01'
test_lecmp(s, s2)
s2 = '\udb00\ude01'
test_lecmp(s, s2)
s2 = '\ud800\udfff'
test_lecmp(s, s2)
s2 = '\ud900\udfff'
test_lecmp(s, s2)
s2 = '\uda00\udfff'
test_lecmp(s, s2)
s2 = '\udb00\udfff'
test_lecmp(s, s2)
test_fixup('\ue000')
test_fixup('\uff61')
# Surrogates on both sides, no fixup required
self.assertTrue('\ud800\udc02' < '\ud84d\udc56')
def test_islower(self):
super().test_islower()
self.checkequalnofix(False, '\u1FFc', 'islower')
self.assertFalse('\u2167'.islower())
self.assertTrue('\u2177'.islower())
# non-BMP, uppercase
self.assertFalse('\U00010401'.islower())
self.assertFalse('\U00010427'.islower())
# non-BMP, lowercase
self.assertTrue('\U00010429'.islower())
self.assertTrue('\U0001044E'.islower())
# non-BMP, non-cased
self.assertFalse('\U0001F40D'.islower())
self.assertFalse('\U0001F46F'.islower())
def test_isupper(self):
super().test_isupper()
self.checkequalnofix(False, '\u1FFc', 'isupper')
self.assertTrue('\u2167'.isupper())
self.assertFalse('\u2177'.isupper())
# non-BMP, uppercase
self.assertTrue('\U00010401'.isupper())
self.assertTrue('\U00010427'.isupper())
# non-BMP, lowercase
self.assertFalse('\U00010429'.isupper())
self.assertFalse('\U0001044E'.isupper())
# non-BMP, non-cased
self.assertFalse('\U0001F40D'.isupper())
self.assertFalse('\U0001F46F'.isupper())
def test_istitle(self):
super().test_istitle()
self.checkequalnofix(True, '\u1FFc', 'istitle')
self.checkequalnofix(True, 'Greek \u1FFcitlecases ...', 'istitle')
# non-BMP, uppercase + lowercase
self.assertTrue('\U00010401\U00010429'.istitle())
self.assertTrue('\U00010427\U0001044E'.istitle())
# apparently there are no titlecased (Lt) non-BMP chars in Unicode 6
for ch in ['\U00010429', '\U0001044E', '\U0001F40D', '\U0001F46F']:
self.assertFalse(ch.istitle(), '{!a} is not title'.format(ch))
def test_isspace(self):
super().test_isspace()
self.checkequalnofix(True, '\u2000', 'isspace')
self.checkequalnofix(True, '\u200a', 'isspace')
self.checkequalnofix(False, '\u2014', 'isspace')
# There are no non-BMP whitespace chars as of Unicode 12.
for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
'\U0001F40D', '\U0001F46F']:
self.assertFalse(ch.isspace(), '{!a} is not space.'.format(ch))
@support.requires_resource('cpu')
def test_isspace_invariant(self):
for codepoint in range(sys.maxunicode + 1):
char = chr(codepoint)
bidirectional = unicodedata.bidirectional(char)
category = unicodedata.category(char)
self.assertEqual(char.isspace(),
(bidirectional in ('WS', 'B', 'S')
or category == 'Zs'))
def test_isalnum(self):
super().test_isalnum()
for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
'\U0001D7F6', '\U00011066', '\U000104A0', '\U0001F107']:
self.assertTrue(ch.isalnum(), '{!a} is alnum.'.format(ch))
def test_isalpha(self):
super().test_isalpha()
self.checkequalnofix(True, '\u1FFc', 'isalpha')
# non-BMP, cased
self.assertTrue('\U00010401'.isalpha())
self.assertTrue('\U00010427'.isalpha())
self.assertTrue('\U00010429'.isalpha())
self.assertTrue('\U0001044E'.isalpha())
# non-BMP, non-cased
self.assertFalse('\U0001F40D'.isalpha())
self.assertFalse('\U0001F46F'.isalpha())
def test_isascii(self):
super().test_isascii()
self.assertFalse("\u20ac".isascii())
self.assertFalse("\U0010ffff".isascii())
def test_isdecimal(self):
self.checkequalnofix(False, '', 'isdecimal')
self.checkequalnofix(False, 'a', 'isdecimal')
self.checkequalnofix(True, '0', 'isdecimal')
self.checkequalnofix(False, '\u2460', 'isdecimal') # CIRCLED DIGIT ONE
self.checkequalnofix(False, '\xbc', 'isdecimal') # VULGAR FRACTION ONE QUARTER
self.checkequalnofix(True, '\u0660', 'isdecimal') # ARABIC-INDIC DIGIT ZERO
self.checkequalnofix(True, '0123456789', 'isdecimal')
self.checkequalnofix(False, '0123456789a', 'isdecimal')
self.checkraises(TypeError, 'abc', 'isdecimal', 42)
for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
'\U0001F40D', '\U0001F46F', '\U00011065', '\U0001F107']:
self.assertFalse(ch.isdecimal(), '{!a} is not decimal.'.format(ch))
for ch in ['\U0001D7F6', '\U00011066', '\U000104A0']:
self.assertTrue(ch.isdecimal(), '{!a} is decimal.'.format(ch))
def test_isdigit(self):
super().test_isdigit()
self.checkequalnofix(True, '\u2460', 'isdigit')
self.checkequalnofix(False, '\xbc', 'isdigit')
self.checkequalnofix(True, '\u0660', 'isdigit')
for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
'\U0001F40D', '\U0001F46F', '\U00011065']:
self.assertFalse(ch.isdigit(), '{!a} is not a digit.'.format(ch))
for ch in ['\U0001D7F6', '\U00011066', '\U000104A0', '\U0001F107']:
self.assertTrue(ch.isdigit(), '{!a} is a digit.'.format(ch))
def test_isnumeric(self):
self.checkequalnofix(False, '', 'isnumeric')
self.checkequalnofix(False, 'a', 'isnumeric')
self.checkequalnofix(True, '0', 'isnumeric')
self.checkequalnofix(True, '\u2460', 'isnumeric')
self.checkequalnofix(True, '\xbc', 'isnumeric')
self.checkequalnofix(True, '\u0660', 'isnumeric')
self.checkequalnofix(True, '0123456789', 'isnumeric')
self.checkequalnofix(False, '0123456789a', 'isnumeric')
self.assertRaises(TypeError, "abc".isnumeric, 42)
for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E',
'\U0001F40D', '\U0001F46F']:
self.assertFalse(ch.isnumeric(), '{!a} is not numeric.'.format(ch))
for ch in ['\U00011065', '\U0001D7F6', '\U00011066',
'\U000104A0', '\U0001F107']:
self.assertTrue(ch.isnumeric(), '{!a} is numeric.'.format(ch))
def test_isidentifier(self):
self.assertTrue("a".isidentifier())
self.assertTrue("Z".isidentifier())
self.assertTrue("_".isidentifier())
self.assertTrue("b0".isidentifier())
self.assertTrue("bc".isidentifier())
self.assertTrue("b_".isidentifier())
self.assertTrue("µ".isidentifier())
self.assertTrue("𝔘𝔫𝔦𝔠𝔬𝔡𝔢".isidentifier())
self.assertFalse(" ".isidentifier())
self.assertFalse("[".isidentifier())
self.assertFalse("©".isidentifier())
self.assertFalse("0".isidentifier())
def test_isprintable(self):
self.assertTrue("".isprintable())
self.assertTrue(" ".isprintable())
self.assertTrue("abcdefg".isprintable())
self.assertFalse("abcdefg\n".isprintable())
# some defined Unicode character
self.assertTrue("\u0374".isprintable())
# undefined character
self.assertFalse("\u0378".isprintable())
# single surrogate character
self.assertFalse("\ud800".isprintable())
self.assertTrue('\U0001F46F'.isprintable())
self.assertFalse('\U000E0020'.isprintable())
def test_surrogates(self):
for s in ('a\uD800b\uDFFF', 'a\uDFFFb\uD800',
'a\uD800b\uDFFFa', 'a\uDFFFb\uD800a'):
self.assertTrue(s.islower())
self.assertFalse(s.isupper())
self.assertFalse(s.istitle())
for s in ('A\uD800B\uDFFF', 'A\uDFFFB\uD800',
'A\uD800B\uDFFFA', 'A\uDFFFB\uD800A'):
self.assertFalse(s.islower())
self.assertTrue(s.isupper())
self.assertTrue(s.istitle())
for meth_name in ('islower', 'isupper', 'istitle'):
meth = getattr(str, meth_name)
for s in ('\uD800', '\uDFFF', '\uD800\uD800', '\uDFFF\uDFFF'):
self.assertFalse(meth(s), '%a.%s() is False' % (s, meth_name))
for meth_name in ('isalpha', 'isalnum', 'isdigit', 'isspace',
'isdecimal', 'isnumeric',
'isidentifier', 'isprintable'):
meth = getattr(str, meth_name)
for s in ('\uD800', '\uDFFF', '\uD800\uD800', '\uDFFF\uDFFF',
'a\uD800b\uDFFF', 'a\uDFFFb\uD800',
'a\uD800b\uDFFFa', 'a\uDFFFb\uD800a'):
self.assertFalse(meth(s), '%a.%s() is False' % (s, meth_name))
def test_lower(self):
string_tests.StringLikeTest.test_lower(self)
self.assertEqual('\U00010427'.lower(), '\U0001044F')
self.assertEqual('\U00010427\U00010427'.lower(),
'\U0001044F\U0001044F')
self.assertEqual('\U00010427\U0001044F'.lower(),
'\U0001044F\U0001044F')
self.assertEqual('X\U00010427x\U0001044F'.lower(),
'x\U0001044Fx\U0001044F')
self.assertEqual('fi'.lower(), 'fi')
self.assertEqual('\u0130'.lower(), '\u0069\u0307')
# Special case for GREEK CAPITAL LETTER SIGMA U+03A3
self.assertEqual('\u03a3'.lower(), '\u03c3')
self.assertEqual('\u0345\u03a3'.lower(), '\u0345\u03c3')
self.assertEqual('A\u0345\u03a3'.lower(), 'a\u0345\u03c2')
self.assertEqual('A\u0345\u03a3a'.lower(), 'a\u0345\u03c3a')
self.assertEqual('A\u0345\u03a3'.lower(), 'a\u0345\u03c2')
self.assertEqual('A\u03a3\u0345'.lower(), 'a\u03c2\u0345')
self.assertEqual('\u03a3\u0345 '.lower(), '\u03c3\u0345 ')
self.assertEqual('\U0008fffe'.lower(), '\U0008fffe')
self.assertEqual('\u2177'.lower(), '\u2177')
def test_casefold(self):
self.assertEqual('hello'.casefold(), 'hello')
self.assertEqual('hELlo'.casefold(), 'hello')
self.assertEqual('ß'.casefold(), 'ss')
self.assertEqual('fi'.casefold(), 'fi')
self.assertEqual('\u03a3'.casefold(), '\u03c3')
self.assertEqual('A\u0345\u03a3'.casefold(), 'a\u03b9\u03c3')
self.assertEqual('\u00b5'.casefold(), '\u03bc')
def test_upper(self):
string_tests.StringLikeTest.test_upper(self)
self.assertEqual('\U0001044F'.upper(), '\U00010427')
self.assertEqual('\U0001044F\U0001044F'.upper(),
'\U00010427\U00010427')
self.assertEqual('\U00010427\U0001044F'.upper(),
'\U00010427\U00010427')
self.assertEqual('X\U00010427x\U0001044F'.upper(),
'X\U00010427X\U00010427')
self.assertEqual('fi'.upper(), 'FI')
self.assertEqual('\u0130'.upper(), '\u0130')
self.assertEqual('\u03a3'.upper(), '\u03a3')
self.assertEqual('ß'.upper(), 'SS')
self.assertEqual('\u1fd2'.upper(), '\u0399\u0308\u0300')
self.assertEqual('\U0008fffe'.upper(), '\U0008fffe')
self.assertEqual('\u2177'.upper(), '\u2167')
def test_capitalize(self):
string_tests.StringLikeTest.test_capitalize(self)
self.assertEqual('\U0001044F'.capitalize(), '\U00010427')
self.assertEqual('\U0001044F\U0001044F'.capitalize(),
'\U00010427\U0001044F')
self.assertEqual('\U00010427\U0001044F'.capitalize(),
'\U00010427\U0001044F')
self.assertEqual('\U0001044F\U00010427'.capitalize(),
'\U00010427\U0001044F')
self.assertEqual('X\U00010427x\U0001044F'.capitalize(),
'X\U0001044Fx\U0001044F')
self.assertEqual('h\u0130'.capitalize(), 'H\u0069\u0307')
exp = '\u0399\u0308\u0300\u0069\u0307'
self.assertEqual('\u1fd2\u0130'.capitalize(), exp)
self.assertEqual('finnish'.capitalize(), 'Finnish')
self.assertEqual('A\u0345\u03a3'.capitalize(), 'A\u0345\u03c2')
def test_title(self):
super().test_title()
self.assertEqual('\U0001044F'.title(), '\U00010427')
self.assertEqual('\U0001044F\U0001044F'.title(),
'\U00010427\U0001044F')
self.assertEqual('\U0001044F\U0001044F \U0001044F\U0001044F'.title(),
'\U00010427\U0001044F \U00010427\U0001044F')
self.assertEqual('\U00010427\U0001044F \U00010427\U0001044F'.title(),
'\U00010427\U0001044F \U00010427\U0001044F')
self.assertEqual('\U0001044F\U00010427 \U0001044F\U00010427'.title(),
'\U00010427\U0001044F \U00010427\U0001044F')
self.assertEqual('X\U00010427x\U0001044F X\U00010427x\U0001044F'.title(),
'X\U0001044Fx\U0001044F X\U0001044Fx\U0001044F')
self.assertEqual('fiNNISH'.title(), 'Finnish')
self.assertEqual('A\u03a3 \u1fa1xy'.title(), 'A\u03c2 \u1fa9xy')
self.assertEqual('A\u03a3A'.title(), 'A\u03c3a')
def test_swapcase(self):
string_tests.StringLikeTest.test_swapcase(self)
self.assertEqual('\U0001044F'.swapcase(), '\U00010427')
self.assertEqual('\U00010427'.swapcase(), '\U0001044F')
self.assertEqual('\U0001044F\U0001044F'.swapcase(),
'\U00010427\U00010427')
self.assertEqual('\U00010427\U0001044F'.swapcase(),
'\U0001044F\U00010427')
self.assertEqual('\U0001044F\U00010427'.swapcase(),
'\U00010427\U0001044F')
self.assertEqual('X\U00010427x\U0001044F'.swapcase(),
'x\U0001044FX\U00010427')
self.assertEqual('fi'.swapcase(), 'FI')
self.assertEqual('\u0130'.swapcase(), '\u0069\u0307')
# Special case for GREEK CAPITAL LETTER SIGMA U+03A3
self.assertEqual('\u03a3'.swapcase(), '\u03c3')
self.assertEqual('\u0345\u03a3'.swapcase(), '\u0399\u03c3')
self.assertEqual('A\u0345\u03a3'.swapcase(), 'a\u0399\u03c2')
self.assertEqual('A\u0345\u03a3a'.swapcase(), 'a\u0399\u03c3A')
self.assertEqual('A\u0345\u03a3'.swapcase(), 'a\u0399\u03c2')
self.assertEqual('A\u03a3\u0345'.swapcase(), 'a\u03c2\u0399')
self.assertEqual('\u03a3\u0345 '.swapcase(), '\u03c3\u0399 ')
self.assertEqual('\u03a3'.swapcase(), '\u03c3')
self.assertEqual('ß'.swapcase(), 'SS')
self.assertEqual('\u1fd2'.swapcase(), '\u0399\u0308\u0300')
def test_center(self):
string_tests.StringLikeTest.test_center(self)
self.assertEqual('x'.center(2, '\U0010FFFF'),
'x\U0010FFFF')
self.assertEqual('x'.center(3, '\U0010FFFF'),
'\U0010FFFFx\U0010FFFF')
self.assertEqual('x'.center(4, '\U0010FFFF'),
'\U0010FFFFx\U0010FFFF\U0010FFFF')
@unittest.skipUnless(sys.maxsize == 2**31 - 1, "requires 32-bit system")
@support.cpython_only