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
|
#!/usr/bin/env python
# Copyright (C) 2016 g10 Code GmbH
#
# This file is part of GPGME.
#
# GPGME is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# GPGME is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
# Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, see <https://www.gnu.org/licenses/>.
from __future__ import absolute_import, print_function, unicode_literals
import io
import os
import tempfile
import gpg
import support
_ = support # to appease pyflakes.
del absolute_import, print_function, unicode_literals
data = gpg.Data('Hello world!')
assert data.read() == b'Hello world!'
assert data.read() == b''
data.seek(0, os.SEEK_SET)
assert data.read() == b'Hello world!'
assert data.read() == b''
data = gpg.Data(b'Hello world!')
assert data.read() == b'Hello world!'
data = gpg.Data(b'Hello world!', copy=False)
assert data.read() == b'Hello world!'
data = gpg.Data()
data.write('Hello world!')
data.seek(0, os.SEEK_SET)
assert data.read() == b'Hello world!'
data = gpg.Data()
data.write(b'Hello world!')
data.seek(0, os.SEEK_SET)
assert data.read() == b'Hello world!'
data = gpg.Data()
data.write(b'Hello world!')
# We expect the second argument to default to SEEK_SET
data.seek(0)
assert data.read() == b'Hello world!'
binjunk = bytes(range(256))
data = gpg.Data()
data.write(binjunk)
data.seek(0, os.SEEK_SET)
assert data.read() == binjunk
data = gpg.Data()
data.set_file_name("foobar")
assert data.get_file_name() == "foobar"
# Test reading from an existing file.
with tempfile.NamedTemporaryFile() as tmp:
tmp.write(binjunk)
tmp.flush()
tmp.seek(0)
# Open using name.
data = gpg.Data(file=tmp.name)
assert data.read() == binjunk
# Open using name, without copying.
if False:
# delayed reads are not yet supported
data = gpg.Data(file=tmp.name, copy=False)
assert data.read() == binjunk
# Open using stream.
tmp.seek(0)
data = gpg.Data(file=tmp)
assert data.read() == binjunk
# Open using stream, offset, and length.
data = gpg.Data(file=tmp, offset=0, length=42)
assert data.read() == binjunk[:42]
# Open using name, offset, and length.
data = gpg.Data(file=tmp.name, offset=23, length=42)
assert data.read() == binjunk[23:23 + 42]
# Test callbacks.
class DataObject(object):
def __init__(self):
self.buffer = io.BytesIO()
self.released = False
def read(self, amount, hook=None):
assert not self.released
return self.buffer.read(amount)
def write(self, data, hook=None):
assert not self.released
return self.buffer.write(data)
def seek(self, offset, whence, hook=None):
assert not self.released
return self.buffer.seek(offset, whence)
def release(self, hook=None):
assert not self.released
self.released = True
do = DataObject()
cookie = object()
data = gpg.Data(cbs=(do.read, do.write, do.seek, do.release, cookie))
data.write('Hello world!')
data.seek(0, os.SEEK_SET)
assert data.read() == b'Hello world!'
del data
assert do.released
# Again, without the cookie.
do = DataObject()
data = gpg.Data(cbs=(do.read, do.write, do.seek, do.release))
data.write('Hello world!')
data.seek(0, os.SEEK_SET)
assert data.read() == b'Hello world!'
del data
assert do.released
|
