-
Notifications
You must be signed in to change notification settings - Fork 1.4k
Expand file tree
/
Copy pathtest_slicing.py
More file actions
170 lines (140 loc) · 5.6 KB
/
test_slicing.py
File metadata and controls
170 lines (140 loc) · 5.6 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
import unittest
from ctypes import (CDLL, POINTER, sizeof,
c_byte, c_short, c_int, c_long, c_char, c_wchar, c_char_p)
from test.support import import_helper
_ctypes_test = import_helper.import_module("_ctypes_test")
class SlicesTestCase(unittest.TestCase):
def test_getslice_cint(self):
a = (c_int * 100)(*range(1100, 1200))
b = list(range(1100, 1200))
self.assertEqual(a[0:2], b[0:2])
self.assertEqual(a[0:2:], b[0:2:])
self.assertEqual(len(a), len(b))
self.assertEqual(a[5:7], b[5:7])
self.assertEqual(a[5:7:], b[5:7:])
self.assertEqual(a[-1], b[-1])
self.assertEqual(a[:], b[:])
self.assertEqual(a[::], b[::])
self.assertEqual(a[10::-1], b[10::-1])
self.assertEqual(a[30:20:-1], b[30:20:-1])
self.assertEqual(a[:12:6], b[:12:6])
self.assertEqual(a[2:6:4], b[2:6:4])
a[0:5] = range(5, 10)
self.assertEqual(a[0:5], list(range(5, 10)))
self.assertEqual(a[0:5:], list(range(5, 10)))
self.assertEqual(a[4::-1], list(range(9, 4, -1)))
def test_setslice_cint(self):
a = (c_int * 100)(*range(1100, 1200))
b = list(range(1100, 1200))
a[32:47] = list(range(32, 47))
self.assertEqual(a[32:47], list(range(32, 47)))
a[32:47] = range(132, 147)
self.assertEqual(a[32:47:], list(range(132, 147)))
a[46:31:-1] = range(232, 247)
self.assertEqual(a[32:47:1], list(range(246, 231, -1)))
a[32:47] = range(1132, 1147)
self.assertEqual(a[:], b)
a[32:47:7] = range(3)
b[32:47:7] = range(3)
self.assertEqual(a[:], b)
a[33::-3] = range(12)
b[33::-3] = range(12)
self.assertEqual(a[:], b)
# TypeError: int expected instead of str instance
with self.assertRaises(TypeError):
a[:5] = "abcde"
# TypeError: int expected instead of str instance
with self.assertRaises(TypeError):
a[:5] = ["a", "b", "c", "d", "e"]
# TypeError: int expected instead of float instance
with self.assertRaises(TypeError):
a[:5] = [1, 2, 3, 4, 3.14]
# ValueError: Can only assign sequence of same size
with self.assertRaises(ValueError):
a[:5] = range(32)
def test_char_ptr(self):
s = b"abcdefghijklmnopqrstuvwxyz"
dll = CDLL(_ctypes_test.__file__)
dll.my_strdup.restype = POINTER(c_char)
dll.my_free.restype = None
res = dll.my_strdup(s)
self.assertEqual(res[:len(s)], s)
self.assertEqual(res[:3], s[:3])
self.assertEqual(res[:len(s):], s)
self.assertEqual(res[len(s)-1:-1:-1], s[::-1])
self.assertEqual(res[len(s)-1:5:-7], s[:5:-7])
self.assertEqual(res[0:-1:-1], s[0::-1])
# get items
with self.assertRaises(ValueError):
res[:]
with self.assertRaises(ValueError):
res[0:]
with self.assertRaises(ValueError):
res[:5:-1]
with self.assertRaises(ValueError):
res[-5:]
# set items
with self.assertRaises(TypeError):
res[:5] = "abcde"
dll.my_free(res)
dll.my_strdup.restype = POINTER(c_byte)
res = dll.my_strdup(s)
self.assertEqual(res[:len(s)], list(range(ord("a"), ord("z")+1)))
self.assertEqual(res[:len(s):], list(range(ord("a"), ord("z")+1)))
dll.my_free(res)
def test_char_ptr_with_free(self):
dll = CDLL(_ctypes_test.__file__)
s = b"abcdefghijklmnopqrstuvwxyz"
class allocated_c_char_p(c_char_p):
pass
dll.my_free.restype = None
def errcheck(result, func, args):
retval = result.value
dll.my_free(result)
return retval
dll.my_strdup.restype = allocated_c_char_p
dll.my_strdup.errcheck = errcheck
try:
res = dll.my_strdup(s)
self.assertEqual(res, s)
finally:
del dll.my_strdup.errcheck
def test_char_array(self):
s = b"abcdefghijklmnopqrstuvwxyz\0"
p = (c_char * 27)(*s)
self.assertEqual(p[:], s)
self.assertEqual(p[::], s)
self.assertEqual(p[::-1], s[::-1])
self.assertEqual(p[5::-2], s[5::-2])
self.assertEqual(p[2:5:-3], s[2:5:-3])
def test_wchar_ptr(self):
s = "abcdefghijklmnopqrstuvwxyz\0"
dll = CDLL(_ctypes_test.__file__)
dll.my_wcsdup.restype = POINTER(c_wchar)
dll.my_wcsdup.argtypes = POINTER(c_wchar),
dll.my_free.restype = None
res = dll.my_wcsdup(s[:-1])
self.assertEqual(res[:len(s)], s)
self.assertEqual(res[:len(s):], s)
self.assertEqual(res[len(s)-1:-1:-1], s[::-1])
self.assertEqual(res[len(s)-1:5:-7], s[:5:-7])
with self.assertRaises(TypeError):
res[:5] = "abcde"
dll.my_free(res)
if sizeof(c_wchar) == sizeof(c_short):
dll.my_wcsdup.restype = POINTER(c_short)
elif sizeof(c_wchar) == sizeof(c_int):
dll.my_wcsdup.restype = POINTER(c_int)
elif sizeof(c_wchar) == sizeof(c_long):
dll.my_wcsdup.restype = POINTER(c_long)
else:
self.skipTest('Pointers to c_wchar are not supported')
res = dll.my_wcsdup(s[:-1])
tmpl = list(range(ord("a"), ord("z")+1))
self.assertEqual(res[:len(s)-1], tmpl)
self.assertEqual(res[:len(s)-1:], tmpl)
self.assertEqual(res[len(s)-2:-1:-1], tmpl[::-1])
self.assertEqual(res[len(s)-2:5:-7], tmpl[:5:-7])
dll.my_free(res)
if __name__ == "__main__":
unittest.main()