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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()