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-rw-r--r--lib/python2.7/ctypes/test/test_functions.py412
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diff --git a/lib/python2.7/ctypes/test/test_functions.py b/lib/python2.7/ctypes/test/test_functions.py
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--- a/lib/python2.7/ctypes/test/test_functions.py
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-"""
-Here is probably the place to write the docs, since the test-cases
-show how the type behave.
-
-Later...
-"""
-
-from ctypes import *
-import sys, unittest
-
-try:
- WINFUNCTYPE
-except NameError:
- # fake to enable this test on Linux
- WINFUNCTYPE = CFUNCTYPE
-
-import _ctypes_test
-dll = CDLL(_ctypes_test.__file__)
-if sys.platform == "win32":
- windll = WinDLL(_ctypes_test.__file__)
-
-class POINT(Structure):
- _fields_ = [("x", c_int), ("y", c_int)]
-class RECT(Structure):
- _fields_ = [("left", c_int), ("top", c_int),
- ("right", c_int), ("bottom", c_int)]
-class FunctionTestCase(unittest.TestCase):
-
- def test_mro(self):
- # in Python 2.3, this raises TypeError: MRO conflict among bases classes,
- # in Python 2.2 it works.
- #
- # But in early versions of _ctypes.c, the result of tp_new
- # wasn't checked, and it even crashed Python.
- # Found by Greg Chapman.
-
- try:
- class X(object, Array):
- _length_ = 5
- _type_ = "i"
- except TypeError:
- pass
-
-
- from _ctypes import _Pointer
- try:
- class X(object, _Pointer):
- pass
- except TypeError:
- pass
-
- from _ctypes import _SimpleCData
- try:
- class X(object, _SimpleCData):
- _type_ = "i"
- except TypeError:
- pass
-
- try:
- class X(object, Structure):
- _fields_ = []
- except TypeError:
- pass
-
-
- def test_wchar_parm(self):
- try:
- c_wchar
- except NameError:
- return
- f = dll._testfunc_i_bhilfd
- f.argtypes = [c_byte, c_wchar, c_int, c_long, c_float, c_double]
- result = f(1, u"x", 3, 4, 5.0, 6.0)
- self.assertEqual(result, 139)
- self.assertEqual(type(result), int)
-
- def test_wchar_result(self):
- try:
- c_wchar
- except NameError:
- return
- f = dll._testfunc_i_bhilfd
- f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_double]
- f.restype = c_wchar
- result = f(0, 0, 0, 0, 0, 0)
- self.assertEqual(result, u'\x00')
-
- def test_voidresult(self):
- f = dll._testfunc_v
- f.restype = None
- f.argtypes = [c_int, c_int, POINTER(c_int)]
- result = c_int()
- self.assertEqual(None, f(1, 2, byref(result)))
- self.assertEqual(result.value, 3)
-
- def test_intresult(self):
- f = dll._testfunc_i_bhilfd
- f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_double]
- f.restype = c_int
- result = f(1, 2, 3, 4, 5.0, 6.0)
- self.assertEqual(result, 21)
- self.assertEqual(type(result), int)
-
- result = f(-1, -2, -3, -4, -5.0, -6.0)
- self.assertEqual(result, -21)
- self.assertEqual(type(result), int)
-
- # If we declare the function to return a short,
- # is the high part split off?
- f.restype = c_short
- result = f(1, 2, 3, 4, 5.0, 6.0)
- self.assertEqual(result, 21)
- self.assertEqual(type(result), int)
-
- result = f(1, 2, 3, 0x10004, 5.0, 6.0)
- self.assertEqual(result, 21)
- self.assertEqual(type(result), int)
-
- # You cannot assign character format codes as restype any longer
- self.assertRaises(TypeError, setattr, f, "restype", "i")
-
- def test_floatresult(self):
- f = dll._testfunc_f_bhilfd
- f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_double]
- f.restype = c_float
- result = f(1, 2, 3, 4, 5.0, 6.0)
- self.assertEqual(result, 21)
- self.assertEqual(type(result), float)
-
- result = f(-1, -2, -3, -4, -5.0, -6.0)
- self.assertEqual(result, -21)
- self.assertEqual(type(result), float)
-
- def test_doubleresult(self):
- f = dll._testfunc_d_bhilfd
- f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_double]
- f.restype = c_double
- result = f(1, 2, 3, 4, 5.0, 6.0)
- self.assertEqual(result, 21)
- self.assertEqual(type(result), float)
-
- result = f(-1, -2, -3, -4, -5.0, -6.0)
- self.assertEqual(result, -21)
- self.assertEqual(type(result), float)
-
- def test_longdoubleresult(self):
- f = dll._testfunc_D_bhilfD
- f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_longdouble]
- f.restype = c_longdouble
- result = f(1, 2, 3, 4, 5.0, 6.0)
- self.assertEqual(result, 21)
- self.assertEqual(type(result), float)
-
- result = f(-1, -2, -3, -4, -5.0, -6.0)
- self.assertEqual(result, -21)
- self.assertEqual(type(result), float)
-
- def test_longlongresult(self):
- try:
- c_longlong
- except NameError:
- return
- f = dll._testfunc_q_bhilfd
- f.restype = c_longlong
- f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_double]
- result = f(1, 2, 3, 4, 5.0, 6.0)
- self.assertEqual(result, 21)
-
- f = dll._testfunc_q_bhilfdq
- f.restype = c_longlong
- f.argtypes = [c_byte, c_short, c_int, c_long, c_float, c_double, c_longlong]
- result = f(1, 2, 3, 4, 5.0, 6.0, 21)
- self.assertEqual(result, 42)
-
- def test_stringresult(self):
- f = dll._testfunc_p_p
- f.argtypes = None
- f.restype = c_char_p
- result = f("123")
- self.assertEqual(result, "123")
-
- result = f(None)
- self.assertEqual(result, None)
-
- def test_pointers(self):
- f = dll._testfunc_p_p
- f.restype = POINTER(c_int)
- f.argtypes = [POINTER(c_int)]
-
- # This only works if the value c_int(42) passed to the
- # function is still alive while the pointer (the result) is
- # used.
-
- v = c_int(42)
-
- self.assertEqual(pointer(v).contents.value, 42)
- result = f(pointer(v))
- self.assertEqual(type(result), POINTER(c_int))
- self.assertEqual(result.contents.value, 42)
-
- # This on works...
- result = f(pointer(v))
- self.assertEqual(result.contents.value, v.value)
-
- p = pointer(c_int(99))
- result = f(p)
- self.assertEqual(result.contents.value, 99)
-
- arg = byref(v)
- result = f(arg)
- self.assertNotEqual(result.contents, v.value)
-
- self.assertRaises(ArgumentError, f, byref(c_short(22)))
-
- # It is dangerous, however, because you don't control the lifetime
- # of the pointer:
- result = f(byref(c_int(99)))
- self.assertNotEqual(result.contents, 99)
-
- def test_errors(self):
- f = dll._testfunc_p_p
- f.restype = c_int
-
- class X(Structure):
- _fields_ = [("y", c_int)]
-
- self.assertRaises(TypeError, f, X()) #cannot convert parameter
-
- ################################################################
- def test_shorts(self):
- f = dll._testfunc_callback_i_if
-
- args = []
- expected = [262144, 131072, 65536, 32768, 16384, 8192, 4096, 2048,
- 1024, 512, 256, 128, 64, 32, 16, 8, 4, 2, 1]
-
- def callback(v):
- args.append(v)
- return v
-
- CallBack = CFUNCTYPE(c_int, c_int)
-
- cb = CallBack(callback)
- f(2**18, cb)
- self.assertEqual(args, expected)
-
- ################################################################
-
-
- def test_callbacks(self):
- f = dll._testfunc_callback_i_if
- f.restype = c_int
- f.argtypes = None
-
- MyCallback = CFUNCTYPE(c_int, c_int)
-
- def callback(value):
- #print "called back with", value
- return value
-
- cb = MyCallback(callback)
- result = f(-10, cb)
- self.assertEqual(result, -18)
-
- # test with prototype
- f.argtypes = [c_int, MyCallback]
- cb = MyCallback(callback)
- result = f(-10, cb)
- self.assertEqual(result, -18)
-
- AnotherCallback = WINFUNCTYPE(c_int, c_int, c_int, c_int, c_int)
-
- # check that the prototype works: we call f with wrong
- # argument types
- cb = AnotherCallback(callback)
- self.assertRaises(ArgumentError, f, -10, cb)
-
-
- def test_callbacks_2(self):
- # Can also use simple datatypes as argument type specifiers
- # for the callback function.
- # In this case the call receives an instance of that type
- f = dll._testfunc_callback_i_if
- f.restype = c_int
-
- MyCallback = CFUNCTYPE(c_int, c_int)
-
- f.argtypes = [c_int, MyCallback]
-
- def callback(value):
- #print "called back with", value
- self.assertEqual(type(value), int)
- return value
-
- cb = MyCallback(callback)
- result = f(-10, cb)
- self.assertEqual(result, -18)
-
- def test_longlong_callbacks(self):
-
- f = dll._testfunc_callback_q_qf
- f.restype = c_longlong
-
- MyCallback = CFUNCTYPE(c_longlong, c_longlong)
-
- f.argtypes = [c_longlong, MyCallback]
-
- def callback(value):
- self.assertTrue(isinstance(value, (int, long)))
- return value & 0x7FFFFFFF
-
- cb = MyCallback(callback)
-
- self.assertEqual(13577625587, f(1000000000000, cb))
-
- def test_errors(self):
- self.assertRaises(AttributeError, getattr, dll, "_xxx_yyy")
- self.assertRaises(ValueError, c_int.in_dll, dll, "_xxx_yyy")
-
- def test_byval(self):
-
- # without prototype
- ptin = POINT(1, 2)
- ptout = POINT()
- # EXPORT int _testfunc_byval(point in, point *pout)
- result = dll._testfunc_byval(ptin, byref(ptout))
- got = result, ptout.x, ptout.y
- expected = 3, 1, 2
- self.assertEqual(got, expected)
-
- # with prototype
- ptin = POINT(101, 102)
- ptout = POINT()
- dll._testfunc_byval.argtypes = (POINT, POINTER(POINT))
- dll._testfunc_byval.restype = c_int
- result = dll._testfunc_byval(ptin, byref(ptout))
- got = result, ptout.x, ptout.y
- expected = 203, 101, 102
- self.assertEqual(got, expected)
-
- def test_struct_return_2H(self):
- class S2H(Structure):
- _fields_ = [("x", c_short),
- ("y", c_short)]
- dll.ret_2h_func.restype = S2H
- dll.ret_2h_func.argtypes = [S2H]
- inp = S2H(99, 88)
- s2h = dll.ret_2h_func(inp)
- self.assertEqual((s2h.x, s2h.y), (99*2, 88*3))
-
- if sys.platform == "win32":
- def test_struct_return_2H_stdcall(self):
- class S2H(Structure):
- _fields_ = [("x", c_short),
- ("y", c_short)]
-
- windll.s_ret_2h_func.restype = S2H
- windll.s_ret_2h_func.argtypes = [S2H]
- s2h = windll.s_ret_2h_func(S2H(99, 88))
- self.assertEqual((s2h.x, s2h.y), (99*2, 88*3))
-
- # This is known cdecl incompatibility between GCC
- # and MSVC. It is addressed in GCC issue #36834.
- # Python libffi detect it and complain.
- @unittest.skipIf(sys.platform == "win32" and sys.version.find("GCC") >= 0, 'XFAIL GCC(mingw)')
- def test_struct_return_8H(self):
- class S8I(Structure):
- _fields_ = [("a", c_int),
- ("b", c_int),
- ("c", c_int),
- ("d", c_int),
- ("e", c_int),
- ("f", c_int),
- ("g", c_int),
- ("h", c_int)]
- dll.ret_8i_func.restype = S8I
- dll.ret_8i_func.argtypes = [S8I]
- inp = S8I(9, 8, 7, 6, 5, 4, 3, 2)
- s8i = dll.ret_8i_func(inp)
- self.assertEqual((s8i.a, s8i.b, s8i.c, s8i.d, s8i.e, s8i.f, s8i.g, s8i.h),
- (9*2, 8*3, 7*4, 6*5, 5*6, 4*7, 3*8, 2*9))
-
- if sys.platform == "win32":
- def test_struct_return_8H_stdcall(self):
- class S8I(Structure):
- _fields_ = [("a", c_int),
- ("b", c_int),
- ("c", c_int),
- ("d", c_int),
- ("e", c_int),
- ("f", c_int),
- ("g", c_int),
- ("h", c_int)]
- windll.s_ret_8i_func.restype = S8I
- windll.s_ret_8i_func.argtypes = [S8I]
- inp = S8I(9, 8, 7, 6, 5, 4, 3, 2)
- s8i = windll.s_ret_8i_func(inp)
- self.assertEqual((s8i.a, s8i.b, s8i.c, s8i.d, s8i.e, s8i.f, s8i.g, s8i.h),
- (9*2, 8*3, 7*4, 6*5, 5*6, 4*7, 3*8, 2*9))
-
- def test_sf1651235(self):
- # see http://www.python.org/sf/1651235
-
- proto = CFUNCTYPE(c_int, RECT, POINT)
- def callback(*args):
- return 0
-
- callback = proto(callback)
- self.assertRaises(ArgumentError, lambda: callback((1, 2, 3, 4), POINT()))
-
-if __name__ == '__main__':
- unittest.main()