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"""Test where byte objects are accepted"""
import unittest
import sys
from ctypes import *
class BytesTest(unittest.TestCase):
def test_c_char(self):
x = c_char(b"x")
self.assertRaises(TypeError, c_char, "x")
x.value = b"y"
with self.assertRaises(TypeError):
x.value = "y"
c_char.from_param(b"x")
self.assertRaises(TypeError, c_char.from_param, "x")
(c_char * 3)(b"a", b"b", b"c")
self.assertRaises(TypeError, c_char * 3, "a", "b", "c")
def test_c_wchar(self):
x = c_wchar("x")
self.assertRaises(TypeError, c_wchar, b"x")
x.value = "y"
with self.assertRaises(TypeError):
x.value = b"y"
c_wchar.from_param("x")
self.assertRaises(TypeError, c_wchar.from_param, b"x")
(c_wchar * 3)("a", "b", "c")
self.assertRaises(TypeError, c_wchar * 3, b"a", b"b", b"c")
def test_c_char_p(self):
c_char_p(b"foo bar")
self.assertRaises(TypeError, c_char_p, "foo bar")
def test_c_wchar_p(self):
c_wchar_p("foo bar")
self.assertRaises(TypeError, c_wchar_p, b"foo bar")
def test_struct(self):
class X(Structure):
_fields_ = [("a", c_char * 3)]
x = X(b"abc")
self.assertRaises(TypeError, X, "abc")
self.assertEqual(x.a, b"abc")
self.assertEqual(type(x.a), bytes)
def test_struct_W(self):
class X(Structure):
_fields_ = [("a", c_wchar * 3)]
x = X("abc")
self.assertRaises(TypeError, X, b"abc")
self.assertEqual(x.a, "abc")
self.assertEqual(type(x.a), str)
@unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
def test_BSTR(self):
from _ctypes import _SimpleCData
class BSTR(_SimpleCData):
_type_ = "X"
BSTR("abc")
if __name__ == '__main__':
unittest.main()