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📁 ..
📄 __init__.py(399 B)
📄 __main__.py(68 B)
📁 __pycache__
📄 test_anon.py(2.48 KB)
📄 test_array_in_pointer.py(1.7 KB)
📄 test_arrays.py(7.33 KB)
📄 test_as_parameter.py(6.76 KB)
📄 test_bitfields.py(9.98 KB)
📄 test_buffers.py(2.55 KB)
📄 test_bytes.py(1.94 KB)
📄 test_byteswap.py(11.14 KB)
📄 test_callbacks.py(10.33 KB)
📄 test_cast.py(3.64 KB)
📄 test_cfuncs.py(7.5 KB)
📄 test_checkretval.py(968 B)
📄 test_delattr.py(533 B)
📄 test_errno.py(2.12 KB)
📄 test_find.py(4.33 KB)
📄 test_frombuffer.py(5.09 KB)
📄 test_funcptr.py(3.93 KB)
📄 test_functions.py(12.26 KB)
📄 test_incomplete.py(1023 B)
📄 test_init.py(1.01 KB)
📄 test_internals.py(2.57 KB)
📄 test_keeprefs.py(3.96 KB)
📄 test_libc.py(1005 B)
📄 test_loading.py(6.91 KB)
📄 test_macholib.py(2.07 KB)
📄 test_memfunctions.py(3.22 KB)
📄 test_numbers.py(9.3 KB)
📄 test_objects.py(1.64 KB)
📄 test_parameters.py(9.35 KB)
📄 test_pep3118.py(8.32 KB)
📄 test_pickling.py(2.17 KB)
📄 test_pointers.py(7.07 KB)
📄 test_prototypes.py(6.68 KB)
📄 test_python_api.py(2.8 KB)
📄 test_random_things.py(2.77 KB)
📄 test_refcounts.py(2.52 KB)
📄 test_repr.py(842 B)
📄 test_returnfuncptrs.py(2.83 KB)
📄 test_simplesubclasses.py(1.26 KB)
📄 test_sizes.py(804 B)
📄 test_slicing.py(5.88 KB)
📄 test_stringptr.py(2.48 KB)
📄 test_strings.py(7.13 KB)
📄 test_struct_fields.py(2.36 KB)
📄 test_structures.py(26.57 KB)
📄 test_unaligned_structures.py(1.11 KB)
📄 test_unicode.py(1.95 KB)
📄 test_values.py(3.78 KB)
📄 test_varsize_struct.py(1.8 KB)
📄 test_win32.py(4.91 KB)
📄 test_wintypes.py(1.36 KB)

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
        # x1 will NOT be the same as x, usually:
        x1 = r[0], r[1], r[2], r[3], r[4]

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

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