PATH: //proc/thread-self/root/opt/alt/python311/lib64/python3.11/ctypes/test
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📄 __init__.py
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📄 __main__.py
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📁 __pycache__/
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📄 test_anon.py
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📄 test_array_in_pointer.py
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📄 test_arrays.py
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📄 test_as_parameter.py
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📄 test_bitfields.py
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📄 test_buffers.py
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📄 test_bytes.py
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📄 test_byteswap.py
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📄 test_callbacks.py
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📄 test_cast.py
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📄 test_cfuncs.py
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📄 test_checkretval.py
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📄 test_delattr.py
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📄 test_errno.py
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📄 test_find.py
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📄 test_frombuffer.py
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📄 test_funcptr.py
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📄 test_functions.py
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📄 test_incomplete.py
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📄 test_init.py
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📄 test_internals.py
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📄 test_keeprefs.py
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📄 test_libc.py
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📄 test_loading.py
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📄 test_macholib.py
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📄 test_memfunctions.py
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📄 test_numbers.py
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📄 test_objects.py
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📄 test_parameters.py
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📄 test_pep3118.py
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📄 test_pickling.py
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📄 test_pointers.py
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📄 test_prototypes.py
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📄 test_python_api.py
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📄 test_random_things.py
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📄 test_refcounts.py
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📄 test_repr.py
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📄 test_returnfuncptrs.py
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📄 test_simplesubclasses.py
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📄 test_sizes.py
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📄 test_slicing.py
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📄 test_stringptr.py
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📄 test_strings.py
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📄 test_struct_fields.py
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📄 test_structures.py
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📄 test_unaligned_structures.py
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📄 test_unicode.py
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📄 test_values.py
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📄 test_varsize_struct.py
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📄 test_win32.py
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📄 test_wintypes.py
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SAVING...
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EDITING: test_stringptr.py
import unittest from test import support from ctypes import * import _ctypes_test lib = CDLL(_ctypes_test.__file__) class StringPtrTestCase(unittest.TestCase): @support.refcount_test def test__POINTER_c_char(self): class X(Structure): _fields_ = [("str", POINTER(c_char))] x = X() # NULL pointer access self.assertRaises(ValueError, getattr, x.str, "contents") b = c_buffer(b"Hello, World") from sys import getrefcount as grc self.assertEqual(grc(b), 2) x.str = b self.assertEqual(grc(b), 3) # POINTER(c_char) and Python string is NOT compatible # POINTER(c_char) and c_buffer() is compatible for i in range(len(b)): self.assertEqual(b[i], x.str[i]) self.assertRaises(TypeError, setattr, x, "str", "Hello, World") def test__c_char_p(self): class X(Structure): _fields_ = [("str", c_char_p)] x = X() # c_char_p and Python string is compatible # c_char_p and c_buffer is NOT compatible self.assertEqual(x.str, None) x.str = b"Hello, World" self.assertEqual(x.str, b"Hello, World") b = c_buffer(b"Hello, World") self.assertRaises(TypeError, setattr, x, b"str", b) def test_functions(self): strchr = lib.my_strchr strchr.restype = c_char_p # c_char_p and Python string is compatible # c_char_p and c_buffer are now compatible strchr.argtypes = c_char_p, c_char self.assertEqual(strchr(b"abcdef", b"c"), b"cdef") self.assertEqual(strchr(c_buffer(b"abcdef"), b"c"), b"cdef") # POINTER(c_char) and Python string is NOT compatible # POINTER(c_char) and c_buffer() is compatible strchr.argtypes = POINTER(c_char), c_char buf = c_buffer(b"abcdef") self.assertEqual(strchr(buf, b"c"), b"cdef") self.assertEqual(strchr(b"abcdef", b"c"), b"cdef") # XXX These calls are dangerous, because the first argument # to strchr is no longer valid after the function returns! # So we must keep a reference to buf separately strchr.restype = POINTER(c_char) buf = c_buffer(b"abcdef") r = strchr(buf, b"c") x = r[0], r[1], r[2], r[3], r[4] self.assertEqual(x, (b"c", b"d", b"e", b"f", b"\000")) del buf # Because r is a pointer to memory that is freed after deleting buf, # the pointer is hanging and using it would reference freed memory. if __name__ == '__main__': unittest.main()
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