Gecko [ edgpens.lpkmn.gov.my ]

Name	Size	Permission
__pycache__	[ DIR ]	drwxrwxrwx
__init__.py	461 B	-rw-rw-rw-
__main__.py	72 B	-rw-rw-rw-
test_anon.py	2.55 KB	-rw-rw-rw-
test_array_in_pointer.py	1.76 KB	-rw-rw-rw-
test_arrays.py	7.56 KB	-rw-rw-rw-
test_as_parameter.py	6.98 KB	-rw-rw-rw-
test_bitfields.py	10.4 KB	-rw-rw-rw-
test_buffers.py	2.62 KB	-rw-rw-rw-
test_bytes.py	2 KB	-rw-rw-rw-
test_byteswap.py	11.45 KB	-rw-rw-rw-
test_callbacks.py	10.64 KB	-rw-rw-rw-
test_cast.py	3.74 KB	-rw-rw-rw-
test_cfuncs.py	7.71 KB	-rw-rw-rw-
test_checkretval.py	1004 B	-rw-rw-rw-
test_delattr.py	554 B	-rw-rw-rw-
test_errno.py	2.19 KB	-rw-rw-rw-
test_find.py	4.48 KB	-rw-rw-rw-
test_frombuffer.py	5.23 KB	-rw-rw-rw-
test_funcptr.py	4.06 KB	-rw-rw-rw-
test_functions.py	12.59 KB	-rw-rw-rw-
test_incomplete.py	1.04 KB	-rw-rw-rw-
test_init.py	1.05 KB	-rw-rw-rw-
test_internals.py	2.67 KB	-rw-rw-rw-
test_keeprefs.py	4.11 KB	-rw-rw-rw-
test_libc.py	1.01 KB	-rw-rw-rw-
test_loading.py	7.15 KB	-rw-rw-rw-
test_macholib.py	2.14 KB	-rw-rw-rw-
test_memfunctions.py	3.29 KB	-rw-rw-rw-
test_numbers.py	9.54 KB	-rw-rw-rw-
test_objects.py	1.7 KB	-rw-rw-rw-
test_parameters.py	9.59 KB	-rw-rw-rw-
test_pep3118.py	8.54 KB	-rw-rw-rw-
test_pickling.py	2.25 KB	-rw-rw-rw-
test_pointers.py	7.29 KB	-rw-rw-rw-
test_prototypes.py	6.9 KB	-rw-rw-rw-
test_python_api.py	2.79 KB	-rw-rw-rw-
test_random_things.py	2.84 KB	-rw-rw-rw-
test_refcounts.py	2.61 KB	-rw-rw-rw-
test_repr.py	871 B	-rw-rw-rw-
test_returnfuncptrs.py	2.89 KB	-rw-rw-rw-
test_simplesubclasses.py	1.31 KB	-rw-rw-rw-
test_sizes.py	837 B	-rw-rw-rw-
test_slicing.py	6.05 KB	-rw-rw-rw-
test_stringptr.py	2.61 KB	-rw-rw-rw-
test_strings.py	7.36 KB	-rw-rw-rw-
test_struct_fields.py	2.64 KB	-rw-rw-rw-
test_structures.py	27.58 KB	-rw-rw-rw-
test_unaligned_structures.py	1.16 KB	-rw-rw-rw-
test_unicode.py	2.01 KB	-rw-rw-rw-
test_values.py	3.88 KB	-rw-rw-rw-
test_varsize_struct.py	1.85 KB	-rw-rw-rw-
test_win32.py	5.04 KB	-rw-rw-rw-
test_wintypes.py	1.41 KB	-rw-rw-rw-

Name

Size

Permission

Action

__pycache__

[ DIR ]

drwxrwxrwx

__init__.py

461 B

-rw-rw-rw-

__main__.py

72 B

-rw-rw-rw-

test_anon.py

2.55 KB

-rw-rw-rw-

test_array_in_pointer.py

1.76 KB

-rw-rw-rw-

test_arrays.py

7.56 KB

-rw-rw-rw-

test_as_parameter.py

6.98 KB

-rw-rw-rw-

test_bitfields.py

10.4 KB

-rw-rw-rw-

test_buffers.py

2.62 KB

-rw-rw-rw-

test_bytes.py

2 KB

-rw-rw-rw-

test_byteswap.py

11.45 KB

-rw-rw-rw-

test_callbacks.py

10.64 KB

-rw-rw-rw-

test_cast.py

3.74 KB

-rw-rw-rw-

test_cfuncs.py

7.71 KB

-rw-rw-rw-

test_checkretval.py

1004 B

-rw-rw-rw-

test_delattr.py

554 B

-rw-rw-rw-

test_errno.py

2.19 KB

-rw-rw-rw-

test_find.py

4.48 KB

-rw-rw-rw-

test_frombuffer.py

5.23 KB

-rw-rw-rw-

test_funcptr.py

4.06 KB

-rw-rw-rw-

test_functions.py

12.59 KB

-rw-rw-rw-

test_incomplete.py

1.04 KB

-rw-rw-rw-

test_init.py

1.05 KB

-rw-rw-rw-

test_internals.py

2.67 KB

-rw-rw-rw-

test_keeprefs.py

4.11 KB

-rw-rw-rw-

test_libc.py

1.01 KB

-rw-rw-rw-

test_loading.py

7.15 KB

-rw-rw-rw-

test_macholib.py

2.14 KB

-rw-rw-rw-

test_memfunctions.py

3.29 KB

-rw-rw-rw-

test_numbers.py

9.54 KB

-rw-rw-rw-

test_objects.py

1.7 KB

-rw-rw-rw-

test_parameters.py

9.59 KB

-rw-rw-rw-

test_pep3118.py

8.54 KB

-rw-rw-rw-

test_pickling.py

2.25 KB

-rw-rw-rw-

test_pointers.py

7.29 KB

-rw-rw-rw-

test_prototypes.py

6.9 KB

-rw-rw-rw-

test_python_api.py

2.79 KB

-rw-rw-rw-

test_random_things.py

2.84 KB

-rw-rw-rw-

test_refcounts.py

2.61 KB

-rw-rw-rw-

test_repr.py

871 B

-rw-rw-rw-

test_returnfuncptrs.py

2.89 KB

-rw-rw-rw-

test_simplesubclasses.py

1.31 KB

-rw-rw-rw-

test_sizes.py

837 B

-rw-rw-rw-

test_slicing.py

6.05 KB

-rw-rw-rw-

test_stringptr.py

2.61 KB

-rw-rw-rw-

test_strings.py

7.36 KB

-rw-rw-rw-

test_struct_fields.py

2.64 KB

-rw-rw-rw-

test_structures.py

27.58 KB

-rw-rw-rw-

test_unaligned_structures.py

1.16 KB

-rw-rw-rw-

test_unicode.py

2.01 KB

-rw-rw-rw-

test_values.py

3.88 KB

-rw-rw-rw-

test_varsize_struct.py

1.85 KB

-rw-rw-rw-

test_win32.py

5.04 KB

-rw-rw-rw-

test_wintypes.py

1.41 KB

-rw-rw-rw-

Code Editor : 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()

${this.title}

Code Editor : test_stringptr.py