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1475 lines (1283 loc) · 68.1 KB
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"""
Common tests shared by test_unicode, test_userstring and test_bytes.
"""
import unittest, string, sys, struct
from test import support
from collections import UserList
import random
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', 123]
def __str__(self): return '{0} {1} {2}'.format(*self.seq)
class BadSeq2(Sequence):
def __init__(self): self.seq = ['a', 'b', 'c']
def __len__(self): return 8
class BaseTest:
# These tests are for buffers of values (bytes) and not
# specific to character interpretation, used for bytes objects
# and various string implementations
# The type to be tested
# Change in subclasses to change the behaviour of fixtesttype()
type2test = None
# Whether the "contained items" of the container are integers in
# range(0, 256) (i.e. bytes, bytearray) or strings of length 1
# (str)
contains_bytes = False
# 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.items()
])
else:
return obj
def test_fixtype(self):
self.assertIs(type(self.fixtype("123")), self.type2test)
# check that obj.method(*args) returns result
def checkequal(self, result, obj, methodname, *args, **kwargs):
result = self.fixtype(result)
obj = self.fixtype(obj)
args = self.fixtype(args)
kwargs = {k: self.fixtype(v) for k,v in kwargs.items()}
realresult = getattr(obj, methodname)(*args, **kwargs)
self.assertEqual(
result,
realresult
)
# if the original is returned make sure that
# this doesn't happen with subclasses
if obj is realresult:
try:
class subtype(self.__class__.type2test):
pass
except TypeError:
pass # Skip this if we can't subclass
else:
obj = subtype(obj)
realresult = getattr(obj, methodname)(*args)
self.assertIsNot(obj, realresult)
# check that obj.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(str(cm.exception), '')
# call obj.method(*args) without any checks
def checkcall(self, obj, methodname, *args):
obj = self.fixtype(obj)
args = self.fixtype(args)
getattr(obj, methodname)(*args)
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.maxsize, 0)
self.checkequal(0, '', 'count', 'xx')
self.checkequal(0, '', 'count', 'xx', 1, 1)
self.checkequal(0, '', 'count', 'xx', sys.maxsize, 0)
self.checkraises(TypeError, 'hello', 'count')
if self.contains_bytes:
self.checkequal(0, 'hello', 'count', 42)
else:
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 range(base ** digits):
entry = []
for j in range(digits):
i, m = divmod(i, base)
entry.append(charset[m])
teststrings.add(''.join(entry))
teststrings = [self.fixtype(ts) for ts in teststrings]
for i in teststrings:
n = len(i)
for j in teststrings:
r1 = i.count(j)
if j:
r2, rem = divmod(n - len(i.replace(j, self.fixtype(''))),
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')
if self.contains_bytes:
self.checkequal(-1, 'hello', 'find', 42)
else:
self.checkraises(TypeError, 'hello', 'find', 42)
self.checkequal(0, '', 'find', '')
self.checkequal(-1, '', 'find', '', 1, 1)
self.checkequal(-1, '', 'find', '', sys.maxsize, 0)
self.checkequal(-1, '', 'find', 'xx')
self.checkequal(-1, '', 'find', 'xx', 1, 1)
self.checkequal(-1, '', 'find', 'xx', sys.maxsize, 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 range(base ** digits):
entry = []
for j in range(digits):
i, m = divmod(i, base)
entry.append(charset[m])
teststrings.add(''.join(entry))
teststrings = [self.fixtype(ts) for ts in teststrings]
for i in teststrings:
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')
if self.contains_bytes:
self.checkequal(-1, 'hello', 'rfind', 42)
else:
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 range(base ** digits):
entry = []
for j in range(digits):
i, m = divmod(i, base)
entry.append(charset[m])
teststrings.add(''.join(entry))
teststrings = [self.fixtype(ts) for ts in teststrings]
for i in teststrings:
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)], j)
# issue 7458
self.checkequal(-1, 'ab', 'rfind', 'xxx', sys.maxsize + 1, 0)
# issue #15534
self.checkequal(0, '<......\u043c...', "rfind", "<")
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')
if self.contains_bytes:
self.checkraises(ValueError, 'hello', 'index', 42)
else:
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')
if self.contains_bytes:
self.checkraises(ValueError, 'hello', 'rindex', 42)
else:
self.checkraises(TypeError, 'hello', 'rindex', 42)
def test_find_periodic_pattern(self):
"""Cover the special path for periodic patterns."""
def reference_find(p, s):
m = len(p)
for i in range(len(s)):
if s[i:i+m] == p:
return i
return -1
rr = random.randrange
choices = random.choices
for _ in range(1000):
p0 = ''.join(choices('abcde', k=rr(10))) * rr(10, 20)
p = p0[:len(p0) - rr(10)] # pop off some characters
left = ''.join(choices('abcdef', k=rr(200)))
right = ''.join(choices('abcdef', k=rr(200)))
text = left + p + right
with self.subTest(p=p, text=text):
self.checkequal(reference_find(p, text),
text, 'find', p)
def test_find_shift_table_overflow(self):
"""When the table of 16-bit shifts overflows."""
N = 2**16 + 100 # Overflow the 16-bit shift table
# first check the periodic case
# here, the shift for 'b' is N.
pattern1 = 'a' * N + 'b' + 'a' * N
text1 = 'babbaa' * N + pattern1
self.checkequal(len(text1)-len(pattern1),
text1, 'find', pattern1)
# now check the non-periodic case
# here, the shift for 'd' is 3*(N+1)
pattern2 = 'ddd' + 'abc' * N + "eee"
text2 = pattern2[:-1] + "ddeede" * 2 * N + pattern2 + "de" * N
self.checkequal(len(text2) - N*len("de") - len(pattern2),
text2, 'find', pattern2)
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')
self.checkequal('abc\r\nab def\ng hi', 'abc\r\nab\tdef\ng\thi',
'expandtabs', 8)
self.checkequal('abc\r\nab def\ng hi', 'abc\r\nab\tdef\ng\thi',
'expandtabs', 4)
self.checkequal('abc\r\nab\r\ndef\ng\r\nhi', 'abc\r\nab\r\ndef\ng\r\nhi',
'expandtabs', 4)
# check keyword args
self.checkequal('abc\rab def\ng hi', 'abc\rab\tdef\ng\thi',
'expandtabs', tabsize=8)
self.checkequal('abc\rab def\ng hi', 'abc\rab\tdef\ng\thi',
'expandtabs', tabsize=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.maxsize < (1 << 32) and struct.calcsize('P') == 4:
self.checkraises(OverflowError,
'\ta\n\tb', 'expandtabs', sys.maxsize)
def test_split(self):
# 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.maxsize-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.maxsize-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)
# with keyword args
self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'split', sep='|')
self.checkequal(['a', 'b|c|d'],
'a|b|c|d', 'split', '|', maxsplit=1)
self.checkequal(['a', 'b|c|d'],
'a|b|c|d', 'split', sep='|', maxsplit=1)
self.checkequal(['a', 'b|c|d'],
'a|b|c|d', 'split', maxsplit=1, sep='|')
self.checkequal(['a', 'b c d'],
'a b c d', 'split', maxsplit=1)
# 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):
# 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.maxsize-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.maxsize-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)
# with keyword args
self.checkequal(['a', 'b', 'c', 'd'], 'a|b|c|d', 'rsplit', sep='|')
self.checkequal(['a|b|c', 'd'],
'a|b|c|d', 'rsplit', '|', maxsplit=1)
self.checkequal(['a|b|c', 'd'],
'a|b|c|d', 'rsplit', sep='|', maxsplit=1)
self.checkequal(['a|b|c', 'd'],
'a|b|c|d', 'rsplit', maxsplit=1, sep='|')
self.checkequal(['a b c', 'd'],
'a b c d', 'rsplit', maxsplit=1)
# 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_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("A", "", "replace", "", "A", 100)
EQ("", "", "replace", "", "", sys.maxsize)
# 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.maxsize)
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.maxsize)
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.maxsize)
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.maxsize)
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.maxsize)
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.maxsize)
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.maxsize)
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", ".", "----")
# issue #15534
EQ('...\u043c......<', '...\u043c......<', "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.maxsize)
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")
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.maxsize > (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_removeprefix(self):
self.checkequal('am', 'spam', 'removeprefix', 'sp')
self.checkequal('spamspam', 'spamspamspam', 'removeprefix', 'spam')
self.checkequal('spam', 'spam', 'removeprefix', 'python')
self.checkequal('spam', 'spam', 'removeprefix', 'spider')
self.checkequal('spam', 'spam', 'removeprefix', 'spam and eggs')
self.checkequal('', '', 'removeprefix', '')
self.checkequal('', '', 'removeprefix', 'abcde')
self.checkequal('abcde', 'abcde', 'removeprefix', '')
self.checkequal('', 'abcde', 'removeprefix', 'abcde')
self.checkraises(TypeError, 'hello', 'removeprefix')
self.checkraises(TypeError, 'hello', 'removeprefix', 42)
self.checkraises(TypeError, 'hello', 'removeprefix', 42, 'h')
self.checkraises(TypeError, 'hello', 'removeprefix', 'h', 42)
self.checkraises(TypeError, 'hello', 'removeprefix', ("he", "l"))
def test_removesuffix(self):
self.checkequal('sp', 'spam', 'removesuffix', 'am')
self.checkequal('spamspam', 'spamspamspam', 'removesuffix', 'spam')
self.checkequal('spam', 'spam', 'removesuffix', 'python')
self.checkequal('spam', 'spam', 'removesuffix', 'blam')
self.checkequal('spam', 'spam', 'removesuffix', 'eggs and spam')
self.checkequal('', '', 'removesuffix', '')
self.checkequal('', '', 'removesuffix', 'abcde')
self.checkequal('abcde', 'abcde', 'removesuffix', '')
self.checkequal('', 'abcde', 'removesuffix', 'abcde')
self.checkraises(TypeError, 'hello', 'removesuffix')
self.checkraises(TypeError, 'hello', 'removesuffix', 42)
self.checkraises(TypeError, 'hello', 'removesuffix', 42, 'h')
self.checkraises(TypeError, 'hello', 'removesuffix', 'h', 42)
self.checkraises(TypeError, 'hello', 'removesuffix', ("lo", "l"))
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_additional_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.maxsize-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)
def test_additional_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.maxsize-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)
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 trim the start and end; does not strip internal characters
self.checkequal('mississipp', 'mississippi', 'strip', 'i')
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)
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)
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)
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_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')
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_isascii(self):
self.checkequal(True, '', 'isascii')
self.checkequal(True, '\x00', 'isascii')
self.checkequal(True, '\x7f', 'isascii')
self.checkequal(True, '\x00\x7f', 'isascii')
self.checkequal(False, '\x80', 'isascii')
self.checkequal(False, '\xe9', 'isascii')
# bytes.isascii() and bytearray.isascii() has optimization which
# check 4 or 8 bytes at once. So check some alignments.
for p in range(8):
self.checkequal(True, ' '*p + '\x7f', 'isascii')
self.checkequal(False, ' '*p + '\x80', 'isascii')