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PATH: opt / bitninja-python-dojo / embedded / lib / python3.9 / ctypes / test

import unittest
from ctypes import *

################################################################
#
# The incomplete pointer example from the tutorial
#

class MyTestCase(unittest.TestCase):

def test_incomplete_example(self):
        lpcell = POINTER("cell")
        class cell(Structure):
            _fields_ = [("name", c_char_p),
                        ("next", lpcell)]

SetPointerType(lpcell, cell)

c1 = cell()
        c1.name = b"foo"
        c2 = cell()
        c2.name = b"bar"

c1.next = pointer(c2)
        c2.next = pointer(c1)

p = c1

result = []
        for i in range(8):
            result.append(p.name)
            p = p.next[0]
        self.assertEqual(result, [b"foo", b"bar"] * 4)

# to not leak references, we must clean _pointer_type_cache
        from ctypes import _pointer_type_cache
        del _pointer_type_cache[cell]

################################################################

if __name__ == '__main__':
    unittest.main()

[-] test_win32.py [edit]
[-] test_bitfields.py [edit]
[-] test_libc.py [edit]
[-] test_array_in_pointer.py [edit]
[-] test_varsize_struct.py [edit]
[-] test_arrays.py [edit]
[-] test_random_things.py [edit]
[-] test_callbacks.py [edit]
[-] test_init.py [edit]
[-] test_numbers.py [edit]
[-] test_stringptr.py [edit]
[-] test_sizes.py [edit]
[-] test_internals.py [edit]
[+] ..
[-] test_errno.py [edit]
[-] test_wintypes.py [edit]
[-] test_struct_fields.py [edit]
[-] test_unicode.py [edit]
[-] test_checkretval.py [edit]
[-] test_bytes.py [edit]
[-] test_returnfuncptrs.py [edit]
[-] test_python_api.py [edit]
[-] test_parameters.py [edit]
[-] __main__.py [edit]
[-] test_strings.py [edit]
[-] test_values.py [edit]
[-] test_pointers.py [edit]
[-] test_repr.py [edit]
[-] test_delattr.py [edit]
[-] test_pep3118.py [edit]
[-] test_buffers.py [edit]
[-] test_objects.py [edit]
[+] __pycache__
[-] test_cast.py [edit]
[-] test_prototypes.py [edit]
[-] test_keeprefs.py [edit]
[-] test_incomplete.py [edit]
[-] test_slicing.py [edit]
[-] test_cfuncs.py [edit]
[-] test_structures.py [edit]
[-] test_funcptr.py [edit]
[-] test_refcounts.py [edit]
[-] test_byteswap.py [edit]
[-] test_unaligned_structures.py [edit]
[-] test_loading.py [edit]
[-] test_frombuffer.py [edit]
[-] test_anon.py [edit]
[-] test_macholib.py [edit]
[-] test_as_parameter.py [edit]
[-] test_find.py [edit]
[-] __init__.py [edit]
[-] test_functions.py [edit]
[-] test_pickling.py [edit]
[-] test_memfunctions.py [edit]
[-] test_simplesubclasses.py [edit]