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
171
172
173
174
|
"""Test the binascii C module."""
from test import test_support
import unittest
import binascii
class BinASCIITest(unittest.TestCase):
# Create binary test data
data = "The quick brown fox jumps over the lazy dog.\r\n"
# Be slow so we don't depend on other modules
data += "".join(map(chr, xrange(256)))
data += "\r\nHello world.\n"
def test_exceptions(self):
# Check module exceptions
self.assertTrue(issubclass(binascii.Error, Exception))
self.assertTrue(issubclass(binascii.Incomplete, Exception))
def test_functions(self):
# Check presence of all functions
funcs = []
for suffix in "base64", "hqx", "uu", "hex":
prefixes = ["a2b_", "b2a_"]
if suffix == "hqx":
prefixes.extend(["crc_", "rlecode_", "rledecode_"])
for prefix in prefixes:
name = prefix + suffix
self.assertTrue(callable(getattr(binascii, name)))
self.assertRaises(TypeError, getattr(binascii, name))
for name in ("hexlify", "unhexlify"):
self.assertTrue(callable(getattr(binascii, name)))
self.assertRaises(TypeError, getattr(binascii, name))
def test_base64valid(self):
# Test base64 with valid data
MAX_BASE64 = 57
lines = []
for i in range(0, len(self.data), MAX_BASE64):
b = self.data[i:i+MAX_BASE64]
a = binascii.b2a_base64(b)
lines.append(a)
res = ""
for line in lines:
b = binascii.a2b_base64(line)
res = res + b
self.assertEqual(res, self.data)
def test_base64invalid(self):
# Test base64 with random invalid characters sprinkled throughout
# (This requires a new version of binascii.)
MAX_BASE64 = 57
lines = []
for i in range(0, len(self.data), MAX_BASE64):
b = self.data[i:i+MAX_BASE64]
a = binascii.b2a_base64(b)
lines.append(a)
fillers = ""
valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/"
for i in xrange(256):
c = chr(i)
if c not in valid:
fillers += c
def addnoise(line):
noise = fillers
ratio = len(line) // len(noise)
res = ""
while line and noise:
if len(line) // len(noise) > ratio:
c, line = line[0], line[1:]
else:
c, noise = noise[0], noise[1:]
res += c
return res + noise + line
res = ""
for line in map(addnoise, lines):
b = binascii.a2b_base64(line)
res += b
self.assertEqual(res, self.data)
# Test base64 with just invalid characters, which should return
# empty strings. TBD: shouldn't it raise an exception instead ?
self.assertEqual(binascii.a2b_base64(fillers), '')
def test_uu(self):
MAX_UU = 45
lines = []
for i in range(0, len(self.data), MAX_UU):
b = self.data[i:i+MAX_UU]
a = binascii.b2a_uu(b)
lines.append(a)
res = ""
for line in lines:
b = binascii.a2b_uu(line)
res += b
self.assertEqual(res, self.data)
self.assertEqual(binascii.a2b_uu("\x7f"), "\x00"*31)
self.assertEqual(binascii.a2b_uu("\x80"), "\x00"*32)
self.assertEqual(binascii.a2b_uu("\xff"), "\x00"*31)
self.assertRaises(binascii.Error, binascii.a2b_uu, "\xff\x00")
self.assertRaises(binascii.Error, binascii.a2b_uu, "!!!!")
self.assertRaises(binascii.Error, binascii.b2a_uu, 46*"!")
def test_crc32(self):
crc = binascii.crc32("Test the CRC-32 of")
crc = binascii.crc32(" this string.", crc)
self.assertEqual(crc, 1571220330)
self.assertRaises(TypeError, binascii.crc32)
# The hqx test is in test_binhex.py
def test_hex(self):
# test hexlification
s = '{s\005\000\000\000worldi\002\000\000\000s\005\000\000\000helloi\001\000\000\0000'
t = binascii.b2a_hex(s)
u = binascii.a2b_hex(t)
self.assertEqual(s, u)
self.assertRaises(TypeError, binascii.a2b_hex, t[:-1])
self.assertRaises(TypeError, binascii.a2b_hex, t[:-1] + 'q')
# Verify the treatment of Unicode strings
if test_support.have_unicode:
self.assertEqual(binascii.hexlify(unicode('a', 'ascii')), '61')
def test_qp(self):
# A test for SF bug 534347 (segfaults without the proper fix)
try:
binascii.a2b_qp("", **{1:1})
except TypeError:
pass
else:
self.fail("binascii.a2b_qp(**{1:1}) didn't raise TypeError")
self.assertEqual(binascii.a2b_qp("= "), "= ")
self.assertEqual(binascii.a2b_qp("=="), "=")
self.assertEqual(binascii.a2b_qp("=AX"), "=AX")
self.assertRaises(TypeError, binascii.b2a_qp, foo="bar")
self.assertEqual(binascii.a2b_qp("=00\r\n=00"), "\x00\r\n\x00")
self.assertEqual(
binascii.b2a_qp("\xff\r\n\xff\n\xff"),
"=FF\r\n=FF\r\n=FF"
)
self.assertEqual(
binascii.b2a_qp("0"*75+"\xff\r\n\xff\r\n\xff"),
"0"*75+"=\r\n=FF\r\n=FF\r\n=FF"
)
self.assertEqual(binascii.b2a_qp('\0\n'), '=00\n')
self.assertEqual(binascii.b2a_qp('\0\n', quotetabs=True), '=00\n')
self.assertEqual(binascii.b2a_qp('foo\tbar\t\n'), 'foo\tbar=09\n')
self.assertEqual(binascii.b2a_qp('foo\tbar\t\n', quotetabs=True), 'foo=09bar=09\n')
self.assertEqual(binascii.b2a_qp('.'), '=2E')
self.assertEqual(binascii.b2a_qp('.\n'), '=2E\n')
self.assertEqual(binascii.b2a_qp('a.\n'), 'a.\n')
def test_empty_string(self):
# A test for SF bug #1022953. Make sure SystemError is not raised.
for n in ['b2a_qp', 'a2b_hex', 'b2a_base64', 'a2b_uu', 'a2b_qp',
'b2a_hex', 'unhexlify', 'hexlify', 'crc32', 'b2a_hqx',
'a2b_hqx', 'a2b_base64', 'rlecode_hqx', 'b2a_uu',
'rledecode_hqx']:
f = getattr(binascii, n)
f('')
binascii.crc_hqx('', 0)
def test_main():
test_support.run_unittest(BinASCIITest)
if __name__ == "__main__":
test_main()
|
