Python code coverage for Lib/ctypes/test/test_incomplete.py

#	count	content
1	n/a	import unittest
2	n/a	from ctypes import *
3	n/a
4	n/a	################################################################
5	n/a	#
6	n/a	# The incomplete pointer example from the tutorial
7	n/a	#
8	n/a
9	n/a	class MyTestCase(unittest.TestCase):
10	n/a
11	n/a	def test_incomplete_example(self):
12	n/a	lpcell = POINTER("cell")
13	n/a	class cell(Structure):
14	n/a	_fields_ = [("name", c_char_p),
15	n/a	("next", lpcell)]
16	n/a
17	n/a	SetPointerType(lpcell, cell)
18	n/a
19	n/a	c1 = cell()
20	n/a	c1.name = b"foo"
21	n/a	c2 = cell()
22	n/a	c2.name = b"bar"
23	n/a
24	n/a	c1.next = pointer(c2)
25	n/a	c2.next = pointer(c1)
26	n/a
27	n/a	p = c1
28	n/a
29	n/a	result = []
30	n/a	for i in range(8):
31	n/a	result.append(p.name)
32	n/a	p = p.next[0]
33	n/a	self.assertEqual(result, [b"foo", b"bar"] * 4)
34	n/a
35	n/a	# to not leak references, we must clean _pointer_type_cache
36	n/a	from ctypes import _pointer_type_cache
37	n/a	del _pointer_type_cache[cell]
38	n/a
39	n/a	################################################################
40	n/a
41	n/a	if __name__ == '__main__':
42	n/a	unittest.main()