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
|
from __future__ import unicode_literals
import io
import six
import unittest
from fs import iotools, tempfs
from fs.test import UNICODE_TEXT
class TestIOTools(unittest.TestCase):
def setUp(self):
self.fs = tempfs.TempFS("iotoolstest")
def tearDown(self):
self.fs.close()
del self.fs
def test_make_stream(self):
"""Test make_stream"""
self.fs.writebytes("foo.bin", b"foofoo")
with self.fs.openbin("foo.bin") as f:
data = f.read()
self.assertTrue(isinstance(data, bytes))
with self.fs.openbin("text.txt", "wb") as f:
f.write(UNICODE_TEXT.encode("utf-8"))
with self.fs.openbin("text.txt") as f:
with iotools.make_stream("text.txt", f, "rt") as f2:
repr(f2)
text = f2.read()
self.assertIsInstance(text, six.text_type)
def test_readinto(self):
self.fs.writebytes("bytes.bin", b"foofoobarbar")
with self.fs.openbin("bytes.bin") as bin_file:
with iotools.make_stream("bytes.bin", bin_file, "rb") as f:
data = bytearray(3)
bytes_read = f.readinto(data)
self.assertEqual(bytes_read, 3)
self.assertEqual(bytes(data), b"foo")
self.assertEqual(f.readline(1), b"f")
def no_readinto(size):
raise AttributeError
with self.fs.openbin("bytes.bin") as bin_file:
bin_file.readinto = no_readinto
with iotools.make_stream("bytes.bin", bin_file, "rb") as f:
data = bytearray(3)
bytes_read = f.readinto(data)
self.assertEqual(bytes_read, 3)
self.assertEqual(bytes(data), b"foo")
self.assertEqual(f.readline(1), b"f")
def test_readinto1(self):
self.fs.writebytes("bytes.bin", b"foofoobarbar")
with self.fs.openbin("bytes.bin") as bin_file:
with iotools.make_stream("bytes.bin", bin_file, "rb") as f:
data = bytearray(3)
bytes_read = f.readinto1(data)
self.assertEqual(bytes_read, 3)
self.assertEqual(bytes(data), b"foo")
self.assertEqual(f.readline(1), b"f")
def no_readinto(size):
raise AttributeError
with self.fs.openbin("bytes.bin") as bin_file:
bin_file.readinto = no_readinto
with iotools.make_stream("bytes.bin", bin_file, "rb") as f:
data = bytearray(3)
bytes_read = f.readinto1(data)
self.assertEqual(bytes_read, 3)
self.assertEqual(bytes(data), b"foo")
self.assertEqual(f.readline(1), b"f")
def test_isatty(self):
with self.fs.openbin("text.txt", "wb") as f:
with iotools.make_stream("text.txt", f, "wb") as f1:
self.assertFalse(f1.isatty())
def test_readlines(self):
self.fs.writebytes("foo", b"barbar\nline1\nline2")
with self.fs.open("foo", "rb") as f:
f = iotools.make_stream("foo", f, "rb")
self.assertEqual(list(f), [b"barbar\n", b"line1\n", b"line2"])
with self.fs.open("foo", "rt") as f:
f = iotools.make_stream("foo", f, "rb")
self.assertEqual(f.readlines(), ["barbar\n", "line1\n", "line2"])
def test_readall(self):
self.fs.writebytes("foo", b"foobar")
with self.fs.open("foo", "rt") as f:
self.assertEqual(f.read(), "foobar")
def test_writelines(self):
with self.fs.open("foo", "wb") as f:
f = iotools.make_stream("foo", f, "rb")
f.writelines([b"foo", b"bar", b"baz"])
self.assertEqual(self.fs.readbytes("foo"), b"foobarbaz")
def test_seekable(self):
f = io.BytesIO(b"HelloWorld")
raw_wrapper = iotools.RawWrapper(f)
self.assertTrue(raw_wrapper.seekable())
def no_seekable():
raise AttributeError("seekable")
f.seekable = no_seekable
def seek(pos, whence):
raise IOError("no seek")
raw_wrapper.seek = seek
self.assertFalse(raw_wrapper.seekable())
def test_line_iterator(self):
f = io.BytesIO(b"Hello\nWorld\n\nfoo")
self.assertEqual(
list(iotools.line_iterator(f)), [b"Hello\n", b"World\n", b"\n", b"foo"]
)
f = io.BytesIO(b"Hello\nWorld\n\nfoo")
self.assertEqual(list(iotools.line_iterator(f, 10)), [b"Hello\n", b"Worl"])
def test_make_stream_writer(self):
f = io.BytesIO()
s = iotools.make_stream("foo", f, "wb", buffering=1)
self.assertIsInstance(s, io.BufferedWriter)
s.write(b"Hello")
self.assertEqual(f.getvalue(), b"Hello")
def test_make_stream_reader(self):
f = io.BytesIO(b"Hello")
s = iotools.make_stream("foo", f, "rb", buffering=1)
self.assertIsInstance(s, io.BufferedReader)
self.assertEqual(s.read(), b"Hello")
def test_make_stream_reader_writer(self):
f = io.BytesIO(b"Hello")
s = iotools.make_stream("foo", f, "+b", buffering=1)
self.assertIsInstance(s, io.BufferedRandom)
self.assertEqual(s.read(), b"Hello")
s.write(b" World")
self.assertEqual(f.getvalue(), b"Hello World")
|
