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import unittest
from test.support import import_helper
_testlimitedcapi = import_helper.import_module('_testlimitedcapi')
from _testcapi import PY_SSIZE_T_MIN, PY_SSIZE_T_MAX
NULL = None
class ByteArraySubclass(bytearray):
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 PyByteArray_Check()
check = _testlimitedcapi.bytearray_check
self.assertTrue(check(bytearray(b'abc')))
self.assertFalse(check(b'abc'))
self.assertTrue(check(ByteArraySubclass(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 PyByteArray_CheckExact()
check = _testlimitedcapi.bytearray_checkexact
self.assertTrue(check(bytearray(b'abc')))
self.assertFalse(check(b'abc'))
self.assertFalse(check(ByteArraySubclass(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 PyByteArray_FromStringAndSize()
fromstringandsize = _testlimitedcapi.bytearray_fromstringandsize
self.assertEqual(fromstringandsize(b'abc'), bytearray(b'abc'))
self.assertEqual(fromstringandsize(b'abc', 2), bytearray(b'ab'))
self.assertEqual(fromstringandsize(b'abc\0def'), bytearray(b'abc\0def'))
self.assertEqual(fromstringandsize(b'', 0), bytearray())
self.assertEqual(fromstringandsize(NULL, 0), bytearray())
self.assertEqual(len(fromstringandsize(NULL, 3)), 3)
self.assertRaises(MemoryError, 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_fromobject(self):
# Test PyByteArray_FromObject()
fromobject = _testlimitedcapi.bytearray_fromobject
self.assertEqual(fromobject(b'abc'), bytearray(b'abc'))
self.assertEqual(fromobject(bytearray(b'abc')), bytearray(b'abc'))
self.assertEqual(fromobject(ByteArraySubclass(b'abc')), bytearray(b'abc'))
self.assertEqual(fromobject([97, 98, 99]), bytearray(b'abc'))
self.assertEqual(fromobject(3), bytearray(b'\0\0\0'))
self.assertRaises(TypeError, fromobject, BytesLike(b'abc'))
self.assertRaises(TypeError, fromobject, 'abc')
self.assertRaises(TypeError, fromobject, object())
# CRASHES fromobject(NULL)
def test_size(self):
# Test PyByteArray_Size()
size = _testlimitedcapi.bytearray_size
self.assertEqual(size(bytearray(b'abc')), 3)
self.assertEqual(size(ByteArraySubclass(b'abc')), 3)
# CRASHES size(b'abc')
# CRASHES size(object())
# CRASHES size(NULL)
def test_asstring(self):
"""Test PyByteArray_AsString()"""
asstring = _testlimitedcapi.bytearray_asstring
self.assertEqual(asstring(bytearray(b'abc'), 4), b'abc\0')
self.assertEqual(asstring(ByteArraySubclass(b'abc'), 4), b'abc\0')
self.assertEqual(asstring(bytearray(b'abc\0def'), 8), b'abc\0def\0')
# CRASHES asstring(b'abc', 0)
# CRASHES asstring(object()', 0)
# CRASHES asstring(NULL, 0)
def test_concat(self):
"""Test PyByteArray_Concat()"""
concat = _testlimitedcapi.bytearray_concat
ba = bytearray(b'abc')
self.assertEqual(concat(ba, b'def'), bytearray(b'abcdef'))
self.assertEqual(ba, b'abc')
self.assertEqual(concat(b'abc', b'def'), bytearray(b'abcdef'))
self.assertEqual(concat(b'a\0b', b'c\0d'), bytearray(b'a\0bc\0d'))
self.assertEqual(concat(bytearray(b'abc'), b'def'), bytearray(b'abcdef'))
self.assertEqual(concat(b'abc', bytearray(b'def')), bytearray(b'abcdef'))
self.assertEqual(concat(bytearray(b'abc'), b''), bytearray(b'abc'))
self.assertEqual(concat(b'', bytearray(b'def')), bytearray(b'def'))
self.assertEqual(concat(memoryview(b'xabcy')[1:4], b'def'),
bytearray(b'abcdef'))
self.assertEqual(concat(b'abc', memoryview(b'xdefy')[1:4]),
bytearray(b'abcdef'))
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, [], [])
# CRASHES concat(NULL, bytearray(b'def'))
# CRASHES concat(bytearray(b'abc'), NULL)
# CRASHES concat(NULL, object())
# CRASHES concat(object(), NULL)
def test_resize(self):
"""Test PyByteArray_Resize()"""
resize = _testlimitedcapi.bytearray_resize
ba = bytearray(b'abcdef')
self.assertEqual(resize(ba, 3), 0)
self.assertEqual(ba, bytearray(b'abc'))
self.assertEqual(resize(ba, 10), 0)
self.assertEqual(len(ba), 10)
self.assertEqual(ba[:3], bytearray(b'abc'))
self.assertEqual(resize(ba, 2**20), 0)
self.assertEqual(len(ba), 2**20)
self.assertEqual(ba[:3], bytearray(b'abc'))
self.assertEqual(resize(ba, 0), 0)
self.assertEqual(ba, bytearray())
ba = ByteArraySubclass(b'abcdef')
self.assertEqual(resize(ba, 3), 0)
self.assertEqual(ba, bytearray(b'abc'))
self.assertRaises(MemoryError, resize, bytearray(), PY_SSIZE_T_MAX)
self.assertRaises(MemoryError, resize, bytearray(1000), PY_SSIZE_T_MAX)
# CRASHES resize(bytearray(b'abc'), -1)
# CRASHES resize(b'abc', 0)
# CRASHES resize(object(), 0)
# CRASHES resize(NULL, 0)
if __name__ == "__main__":
unittest.main()
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