import unittest
from test.support import import_helper
_testlimitedcapi = import_helper.import_module('_testlimitedcapi')
_testcapi = import_helper.import_module('_testcapi')
from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX
NULL = None
class BytesSubclass(bytes):
pass
class BytesLike:
def __init__(self, value):
self.value = value
def __bytes__(self):
return self.value
class CAPITest(unittest.TestCase):
def test_check(self):
# Test PyBytes_Check()
check = _testlimitedcapi.bytes_check
self.assertTrue(check(b'abc'))
self.assertFalse(check('abc'))
self.assertFalse(check(bytearray(b'abc')))
self.assertTrue(check(BytesSubclass(b'abc')))
self.assertFalse(check(BytesLike(b'abc')))
self.assertFalse(check(3))
self.assertFalse(check([]))
self.assertFalse(check(object()))
# CRASHES check(NULL)
def test_checkexact(self):
# Test PyBytes_CheckExact()
check = _testlimitedcapi.bytes_checkexact
self.assertTrue(check(b'abc'))
self.assertFalse(check('abc'))
self.assertFalse(check(bytearray(b'abc')))
self.assertFalse(check(BytesSubclass(b'abc')))
self.assertFalse(check(BytesLike(b'abc')))
self.assertFalse(check(3))
self.assertFalse(check([]))
self.assertFalse(check(object()))
# CRASHES check(NULL)
def test_fromstringandsize(self):
# Test PyBytes_FromStringAndSize()
fromstringandsize = _testlimitedcapi.bytes_fromstringandsize
self.assertEqual(fromstringandsize(b'abc'), b'abc')
self.assertEqual(fromstringandsize(b'abc', 2), b'ab')
self.assertEqual(fromstringandsize(b'abc\0def'), b'abc\0def')
self.assertEqual(fromstringandsize(b'a'), b'a')
self.assertEqual(fromstringandsize(b'a', 1), b'a')
self.assertEqual(fromstringandsize(b'', 0), b'')
self.assertEqual(fromstringandsize(NULL, 0), b'')
self.assertEqual(len(fromstringandsize(NULL, 3)), 3)
self.assertRaises((MemoryError, OverflowError),
fromstringandsize, NULL, PY_SSIZE_T_MAX)
self.assertRaises(SystemError, fromstringandsize, b'abc', -1)
self.assertRaises(SystemError, fromstringandsize, b'abc', PY_SSIZE_T_MIN)
self.assertRaises(SystemError, fromstringandsize, NULL, -1)
self.assertRaises(SystemError, fromstringandsize, NULL, PY_SSIZE_T_MIN)
def test_fromstring(self):
# Test PyBytes_FromString()
fromstring = _testlimitedcapi.bytes_fromstring
self.assertEqual(fromstring(b'abc\0def'), b'abc')
self.assertEqual(fromstring(b''), b'')
# CRASHES fromstring(NULL)
def test_fromobject(self):
# Test PyBytes_FromObject()
fromobject = _testlimitedcapi.bytes_fromobject
self.assertEqual(fromobject(b'abc'), b'abc')
self.assertEqual(fromobject(bytearray(b'abc')), b'abc')
self.assertEqual(fromobject(BytesSubclass(b'abc')), b'abc')
self.assertEqual(fromobject([97, 98, 99]), b'abc')
self.assertRaises(TypeError, fromobject, 3)
self.assertRaises(TypeError, fromobject, BytesLike(b'abc'))
self.assertRaises(TypeError, fromobject, 'abc')
self.assertRaises(TypeError, fromobject, object())
self.assertRaises(SystemError, fromobject, NULL)
def test_size(self):
# Test PyBytes_Size()
size = _testlimitedcapi.bytes_size
self.assertEqual(size(b'abc'), 3)
self.assertEqual(size(BytesSubclass(b'abc')), 3)
self.assertRaises(TypeError, size, bytearray(b'abc'))
self.assertRaises(TypeError, size, 'abc')
self.assertRaises(TypeError, size, object())
# CRASHES size(NULL)
def test_asstring(self):
"""Test PyBytes_AsString()"""
asstring = _testlimitedcapi.bytes_asstring
self.assertEqual(asstring(b'abc', 4), b'abc\0')
self.assertEqual(asstring(b'abc\0def', 8), b'abc\0def\0')
self.assertRaises(TypeError, asstring, 'abc', 0)
self.assertRaises(TypeError, asstring, object(), 0)
# CRASHES asstring(NULL, 0)
def test_asstringandsize(self):
"""Test PyBytes_AsStringAndSize()"""
asstringandsize = _testlimitedcapi.bytes_asstringandsize
asstringandsize_null = _testlimitedcapi.bytes_asstringandsize_null
self.assertEqual(asstringandsize(b'abc', 4), (b'abc\0', 3))
self.assertEqual(asstringandsize(b'abc\0def', 8), (b'abc\0def\0', 7))
self.assertEqual(asstringandsize_null(b'abc', 4), b'abc\0')
self.assertRaises(ValueError, asstringandsize_null, b'abc\0def', 8)
self.assertRaises(TypeError, asstringandsize, 'abc', 0)
self.assertRaises(TypeError, asstringandsize_null, 'abc', 0)
self.assertRaises(TypeError, asstringandsize, object(), 0)
self.assertRaises(TypeError, asstringandsize_null, object(), 0)
# CRASHES asstringandsize(NULL, 0)
# CRASHES asstringandsize_null(NULL, 0)
def test_repr(self):
# Test PyBytes_Repr()
bytes_repr = _testlimitedcapi.bytes_repr
self.assertEqual(bytes_repr(b'''abc''', 0), r"""b'abc'""")
self.assertEqual(bytes_repr(b'''abc''', 1), r"""b'abc'""")
self.assertEqual(bytes_repr(b'''a'b"c"d''', 0), r"""b'a\'b"c"d'""")
self.assertEqual(bytes_repr(b'''a'b"c"d''', 1), r"""b'a\'b"c"d'""")
self.assertEqual(bytes_repr(b'''a'b"c''', 0), r"""b'a\'b"c'""")
self.assertEqual(bytes_repr(b'''a'b"c''', 1), r"""b'a\'b"c'""")
self.assertEqual(bytes_repr(b'''a'b'c"d''', 0), r"""b'a\'b\'c"d'""")
self.assertEqual(bytes_repr(b'''a'b'c"d''', 1), r"""b'a\'b\'c"d'""")
self.assertEqual(bytes_repr(b'''a'b'c'd''', 0), r"""b'a\'b\'c\'d'""")
self.assertEqual(bytes_repr(b'''a'b'c'd''', 1), r'''b"a'b'c'd"''')
self.assertEqual(bytes_repr(BytesSubclass(b'abc'), 0), r"""b'abc'""")
# UDEFINED bytes_repr(object(), 0)
# CRASHES bytes_repr(NULL, 0)
def test_concat(self, concat=None):
"""Test PyBytes_Concat()"""
if concat is None:
concat = _testlimitedcapi.bytes_concat
self.assertEqual(concat(b'abc', b'def'), b'abcdef')
self.assertEqual(concat(b'a\0b', b'c\0d'), b'a\0bc\0d')
self.assertEqual(concat(bytearray(b'abc'), b'def'), b'abcdef')
self.assertEqual(concat(b'abc', bytearray(b'def')), b'abcdef')
self.assertEqual(concat(bytearray(b'abc'), b''), b'abc')
self.assertEqual(concat(b'', bytearray(b'def')), b'def')
self.assertEqual(concat(memoryview(b'xabcy')[1:4], b'def'), b'abcdef')
self.assertEqual(concat(b'abc', memoryview(b'xdefy')[1:4]), b'abcdef')
self.assertEqual(concat(b'abc', b'def', True), b'abcdef')
self.assertEqual(concat(b'abc', bytearray(b'def'), True), b'abcdef')
# Check that it does not change the singleton
self.assertEqual(concat(bytes(), b'def', True), b'def')
self.assertEqual(len(bytes()), 0)
self.assertRaises(TypeError, concat, memoryview(b'axbycz')[::2], b'def')
self.assertRaises(TypeError, concat, b'abc', memoryview(b'dxeyfz')[::2])
self.assertRaises(TypeError, concat, b'abc', 'def')
self.assertRaises(TypeError, concat, 'abc', b'def')
self.assertRaises(TypeError, concat, 'abc', 'def')
self.assertRaises(TypeError, concat, [], b'def')
self.assertRaises(TypeError, concat, b'abc', [])
self.assertRaises(TypeError, concat, [], [])
self.assertEqual(concat(NULL, b'def'), NULL)
self.assertEqual(concat(b'abc', NULL), NULL)
self.assertEqual(concat(NULL, object()), NULL)
self.assertEqual(concat(object(), NULL), NULL)
def test_concatanddel(self):
"""Test PyBytes_ConcatAndDel()"""
self.test_concat(_testlimitedcapi.bytes_concatanddel)
def test_decodeescape(self):
"""Test PyBytes_DecodeEscape()"""
decodeescape = _testlimitedcapi.bytes_decodeescape
self.assertEqual(decodeescape(b'abc'), b'abc')
self.assertEqual(decodeescape(br'\t\n\r\x0b\x0c\x00\\\'\"'),
b'''\t\n\r\v\f\0\\'"''')
self.assertEqual(decodeescape(b'\t\n\r\x0b\x0c\x00'), b'\t\n\r\v\f\0')
self.assertEqual(decodeescape(br'\xa1\xa2'), b'\xa1\xa2')
self.assertEqual(decodeescape(br'\2\24\241'), b'\x02\x14\xa1')
self.assertEqual(decodeescape(b'\xa1\xa2'), b'\xa1\xa2')
with self.assertWarns(DeprecationWarning):
self.assertEqual(decodeescape(br'\u4f60'), br'\u4f60')
with self.assertWarns(DeprecationWarning):
self.assertEqual(decodeescape(br'\z'), br'\z')
with self.assertWarns(DeprecationWarning):
self.assertEqual(decodeescape(br'\541'), b'a')
for b in b'\\', br'\x', br'\xa', br'\xz', br'\xaz':
self.assertRaises(ValueError, decodeescape, b)
self.assertRaises(ValueError, decodeescape, b, 'strict')
self.assertEqual(decodeescape(br'x\xa', 'replace'), b'x?')
self.assertEqual(decodeescape(br'x\xay', 'replace'), b'x?y')
self.assertEqual(decodeescape(br'x\xa\xy', 'replace'), b'x??y')
self.assertEqual(decodeescape(br'x\xa\xy', 'ignore'), b'xy')
self.assertRaises(ValueError, decodeescape, b'\\', 'spam')
self.assertEqual(decodeescape(NULL), b'')
self.assertRaises(OverflowError, decodeescape, b'abc', NULL, PY_SSIZE_T_MAX)
self.assertRaises(OverflowError, decodeescape, NULL, NULL, PY_SSIZE_T_MAX)
# CRASHES decodeescape(b'abc', NULL, -1)
# CRASHES decodeescape(NULL, NULL, 1)
def test_resize(self):
"""Test _PyBytes_Resize()"""
resize = _testcapi.bytes_resize
for new in True, False:
self.assertEqual(resize(b'abc', 0, new), b'')
self.assertEqual(resize(b'abc', 1, new), b'a')
self.assertEqual(resize(b'abc', 2, new), b'ab')
self.assertEqual(resize(b'abc', 3, new), b'abc')
b = resize(b'abc', 4, new)
self.assertEqual(len(b), 4)
self.assertEqual(b[:3], b'abc')
self.assertEqual(resize(b'a', 0, new), b'')
self.assertEqual(resize(b'a', 1, new), b'a')
b = resize(b'a', 2, new)
self.assertEqual(len(b), 2)
self.assertEqual(b[:1], b'a')
self.assertEqual(resize(b'', 0, new), b'')
self.assertEqual(len(resize(b'', 1, new)), 1)
self.assertEqual(len(resize(b'', 2, new)), 2)
self.assertRaises(SystemError, resize, b'abc', -1, False)
self.assertRaises(SystemError, resize, bytearray(b'abc'), 3, False)
# CRASHES resize(NULL, 0, False)
# CRASHES resize(NULL, 3, False)
def test_join(self):
"""Test PyBytes_Join()"""
bytes_join = _testcapi.bytes_join
self.assertEqual(bytes_join(b'', []), b'')
self.assertEqual(bytes_join(b'sep', []), b'')
self.assertEqual(bytes_join(b'', [b'a', b'b', b'c']), b'abc')
self.assertEqual(bytes_join(b'-', [b'a', b'b', b'c']), b'a-b-c')
self.assertEqual(bytes_join(b' - ', [b'a', b'b', b'c']), b'a - b - c')
self.assertEqual(bytes_join(b'-', [bytearray(b'abc'),
memoryview(b'def')]),
b'abc-def')
self.assertEqual(bytes_join(b'-', iter([b'a', b'b', b'c'])), b'a-b-c')
# invalid 'sep' argument
with self.assertRaises(TypeError):
bytes_join(bytearray(b'sep'), [])
with self.assertRaises(TypeError):
bytes_join(memoryview(b'sep'), [])
with self.assertRaises(TypeError):
bytes_join('', []) # empty Unicode string
with self.assertRaises(TypeError):
bytes_join('unicode', [])
with self.assertRaises(TypeError):
bytes_join(123, [])
with self.assertRaises(SystemError):
self.assertEqual(bytes_join(NULL, [b'a', b'b', b'c']), b'abc')
# invalid 'iterable' argument
with self.assertRaises(TypeError):
bytes_join(b'', [b'bytes', 'unicode'])
with self.assertRaises(TypeError):
bytes_join(b'', [b'bytes', 123])
with self.assertRaises(TypeError):
bytes_join(b'', 123)
with self.assertRaises(SystemError):
bytes_join(b'', NULL)
if __name__ == "__main__":
unittest.main()
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