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# Windows specific tests
from ctypes import *
import unittest, sys
from test import support
import _ctypes_test
# Only windows 32-bit has different calling conventions.
@unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
@unittest.skipUnless(sizeof(c_void_p) == sizeof(c_int),
"sizeof c_void_p and c_int differ")
class WindowsTestCase(unittest.TestCase):
def test_callconv_1(self):
# Testing stdcall function
IsWindow = windll.user32.IsWindow
# ValueError: Procedure probably called with not enough arguments
# (4 bytes missing)
self.assertRaises(ValueError, IsWindow)
# This one should succeed...
self.assertEqual(0, IsWindow(0))
# ValueError: Procedure probably called with too many arguments
# (8 bytes in excess)
self.assertRaises(ValueError, IsWindow, 0, 0, 0)
def test_callconv_2(self):
# Calling stdcall function as cdecl
IsWindow = cdll.user32.IsWindow
# ValueError: Procedure called with not enough arguments
# (4 bytes missing) or wrong calling convention
self.assertRaises(ValueError, IsWindow, None)
@unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
class FunctionCallTestCase(unittest.TestCase):
@unittest.skipUnless('MSC' in sys.version, "SEH only supported by MSC")
@unittest.skipIf(sys.executable.lower().endswith('_d.exe'),
"SEH not enabled in debug builds")
def test_SEH(self):
# Disable faulthandler to prevent logging the warning:
# "Windows fatal exception: access violation"
with support.disable_faulthandler():
# Call functions with invalid arguments, and make sure
# that access violations are trapped and raise an
# exception.
self.assertRaises(OSError, windll.kernel32.GetModuleHandleA, 32)
def test_noargs(self):
# This is a special case on win32 x64
windll.user32.GetDesktopWindow()
@unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
class TestWintypes(unittest.TestCase):
def test_HWND(self):
from ctypes import wintypes
self.assertEqual(sizeof(wintypes.HWND), sizeof(c_void_p))
def test_PARAM(self):
from ctypes import wintypes
self.assertEqual(sizeof(wintypes.WPARAM),
sizeof(c_void_p))
self.assertEqual(sizeof(wintypes.LPARAM),
sizeof(c_void_p))
def test_COMError(self):
from _ctypes import COMError
if support.HAVE_DOCSTRINGS:
self.assertEqual(COMError.__doc__,
"Raised when a COM method call failed.")
ex = COMError(-1, "text", ("details",))
self.assertEqual(ex.hresult, -1)
self.assertEqual(ex.text, "text")
self.assertEqual(ex.details, ("details",))
@unittest.skipUnless(sys.platform == "win32", 'Windows-specific test')
class TestWinError(unittest.TestCase):
def test_winerror(self):
# see Issue 16169
import errno
ERROR_INVALID_PARAMETER = 87
msg = FormatError(ERROR_INVALID_PARAMETER).strip()
args = (errno.EINVAL, msg, None, ERROR_INVALID_PARAMETER)
e = WinError(ERROR_INVALID_PARAMETER)
self.assertEqual(e.args, args)
self.assertEqual(e.errno, errno.EINVAL)
self.assertEqual(e.winerror, ERROR_INVALID_PARAMETER)
windll.kernel32.SetLastError(ERROR_INVALID_PARAMETER)
try:
raise WinError()
except OSError as exc:
e = exc
self.assertEqual(e.args, args)
self.assertEqual(e.errno, errno.EINVAL)
self.assertEqual(e.winerror, ERROR_INVALID_PARAMETER)
class Structures(unittest.TestCase):
def test_struct_by_value(self):
class POINT(Structure):
_fields_ = [("x", c_long),
("y", c_long)]
class RECT(Structure):
_fields_ = [("left", c_long),
("top", c_long),
("right", c_long),
("bottom", c_long)]
dll = CDLL(_ctypes_test.__file__)
pt = POINT(15, 25)
left = c_long.in_dll(dll, 'left')
top = c_long.in_dll(dll, 'top')
right = c_long.in_dll(dll, 'right')
bottom = c_long.in_dll(dll, 'bottom')
rect = RECT(left, top, right, bottom)
PointInRect = dll.PointInRect
PointInRect.argtypes = [POINTER(RECT), POINT]
self.assertEqual(1, PointInRect(byref(rect), pt))
ReturnRect = dll.ReturnRect
ReturnRect.argtypes = [c_int, RECT, POINTER(RECT), POINT, RECT,
POINTER(RECT), POINT, RECT]
ReturnRect.restype = RECT
for i in range(4):
ret = ReturnRect(i, rect, pointer(rect), pt, rect,
byref(rect), pt, rect)
# the c function will check and modify ret if something is
# passed in improperly
self.assertEqual(ret.left, left.value)
self.assertEqual(ret.right, right.value)
self.assertEqual(ret.top, top.value)
self.assertEqual(ret.bottom, bottom.value)
# to not leak references, we must clean _pointer_type_cache
from ctypes import _pointer_type_cache
del _pointer_type_cache[RECT]
if __name__ == '__main__':
unittest.main()