Add ctypes/test/*.py from CPython 3.11 · RustPython/RustPython@019be59 · GitHub
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Add ctypes/test/*.py from CPython 3.11
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‎Lib/ctypes/test/__init__.py‎

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‎Lib/ctypes/test/__main__.py‎

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from ctypes.test import load_tests
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import unittest
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unittest.main()

‎Lib/ctypes/test/test_anon.py‎

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import unittest
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import test.support
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from ctypes import *
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class AnonTest(unittest.TestCase):
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def test_anon(self):
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class ANON(Union):
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_fields_ = [("a", c_int),
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("b", c_int)]
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class Y(Structure):
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_fields_ = [("x", c_int),
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("_", ANON),
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("y", c_int)]
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_anonymous_ = ["_"]
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self.assertEqual(Y.a.offset, sizeof(c_int))
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self.assertEqual(Y.b.offset, sizeof(c_int))
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self.assertEqual(ANON.a.offset, 0)
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self.assertEqual(ANON.b.offset, 0)
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def test_anon_nonseq(self):
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# TypeError: _anonymous_ must be a sequence
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self.assertRaises(TypeError,
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lambda: type(Structure)("Name",
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(Structure,),
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{"_fields_": [], "_anonymous_": 42}))
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def test_anon_nonmember(self):
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# AttributeError: type object 'Name' has no attribute 'x'
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self.assertRaises(AttributeError,
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lambda: type(Structure)("Name",
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(Structure,),
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{"_fields_": [],
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"_anonymous_": ["x"]}))
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@test.support.cpython_only
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def test_issue31490(self):
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# There shouldn't be an assertion failure in case the class has an
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# attribute whose name is specified in _anonymous_ but not in _fields_.
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# AttributeError: 'x' is specified in _anonymous_ but not in _fields_
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with self.assertRaises(AttributeError):
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class Name(Structure):
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_fields_ = []
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_anonymous_ = ["x"]
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x = 42
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def test_nested(self):
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class ANON_S(Structure):
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_fields_ = [("a", c_int)]
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class ANON_U(Union):
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_fields_ = [("_", ANON_S),
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("b", c_int)]
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_anonymous_ = ["_"]
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class Y(Structure):
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_fields_ = [("x", c_int),
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("_", ANON_U),
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("y", c_int)]
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_anonymous_ = ["_"]
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self.assertEqual(Y.x.offset, 0)
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self.assertEqual(Y.a.offset, sizeof(c_int))
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self.assertEqual(Y.b.offset, sizeof(c_int))
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self.assertEqual(Y._.offset, sizeof(c_int))
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self.assertEqual(Y.y.offset, sizeof(c_int) * 2)
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if __name__ == "__main__":
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unittest.main()

‎Lib/ctypes/test/test_array_in_pointer.py‎

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import unittest
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from ctypes import *
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from binascii import hexlify
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import re
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def dump(obj):
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# helper function to dump memory contents in hex, with a hyphen
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# between the bytes.
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h = hexlify(memoryview(obj)).decode()
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return re.sub(r"(..)", r"\1-", h)[:-1]
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class Value(Structure):
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_fields_ = [("val", c_byte)]
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class Container(Structure):
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_fields_ = [("pvalues", POINTER(Value))]
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class Test(unittest.TestCase):
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def test(self):
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# create an array of 4 values
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val_array = (Value * 4)()
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# create a container, which holds a pointer to the pvalues array.
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c = Container()
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c.pvalues = val_array
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# memory contains 4 NUL bytes now, that's correct
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self.assertEqual("00-00-00-00", dump(val_array))
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# set the values of the array through the pointer:
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for i in range(4):
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c.pvalues[i].val = i + 1
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values = [c.pvalues[i].val for i in range(4)]
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# These are the expected results: here s the bug!
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self.assertEqual(
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(values, dump(val_array)),
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([1, 2, 3, 4], "01-02-03-04")
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)
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def test_2(self):
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val_array = (Value * 4)()
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# memory contains 4 NUL bytes now, that's correct
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self.assertEqual("00-00-00-00", dump(val_array))
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ptr = cast(val_array, POINTER(Value))
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# set the values of the array through the pointer:
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for i in range(4):
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ptr[i].val = i + 1
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values = [ptr[i].val for i in range(4)]
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# These are the expected results: here s the bug!
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self.assertEqual(
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(values, dump(val_array)),
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([1, 2, 3, 4], "01-02-03-04")
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)
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if __name__ == "__main__":
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unittest.main()

‎Lib/ctypes/test/test_arrays.py‎

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