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
|
#! /usr/bin/env python
"""Test script for the gzip module.
"""
import unittest
from test import support
import os
import gzip
data1 = b""" int length=DEFAULTALLOC, err = Z_OK;
PyObject *RetVal;
int flushmode = Z_FINISH;
unsigned long start_total_out;
"""
data2 = b"""/* zlibmodule.c -- gzip-compatible data compression */
/* See http://www.gzip.org/zlib/
/* See http://www.winimage.com/zLibDll for Windows */
"""
class TestGzip(unittest.TestCase):
filename = support.TESTFN
def setUp (self):
support.unlink(self.filename)
def tearDown (self):
support.unlink(self.filename)
def test_write (self):
f = gzip.GzipFile(self.filename, 'wb') ; f.write(data1 * 50)
# Try flush and fileno.
f.flush()
f.fileno()
if hasattr(os, 'fsync'):
os.fsync(f.fileno())
f.close()
def test_read(self):
self.test_write()
# Try reading.
f = gzip.GzipFile(self.filename, 'r') ; d = f.read() ; f.close()
self.assertEqual(d, data1*50)
def test_append(self):
self.test_write()
# Append to the previous file
f = gzip.GzipFile(self.filename, 'ab') ; f.write(data2 * 15) ; f.close()
f = gzip.GzipFile(self.filename, 'rb') ; d = f.read() ; f.close()
self.assertEqual(d, (data1*50) + (data2*15))
def test_many_append(self):
# Bug #1074261 was triggered when reading a file that contained
# many, many members. Create such a file and verify that reading it
# works.
f = gzip.open(self.filename, 'wb', 9)
f.write(b'a')
f.close()
for i in range(0, 200):
f = gzip.open(self.filename, "ab", 9) # append
f.write(b'a')
f.close()
# Try reading the file
zgfile = gzip.open(self.filename, "rb")
contents = b""
while 1:
ztxt = zgfile.read(8192)
contents += ztxt
if not ztxt: break
zgfile.close()
self.assertEquals(contents, b'a'*201)
def test_readline(self):
self.test_write()
# Try .readline() with varying line lengths
f = gzip.GzipFile(self.filename, 'rb')
line_length = 0
while 1:
L = f.readline(line_length)
if not L and line_length != 0: break
self.assert_(len(L) <= line_length)
line_length = (line_length + 1) % 50
f.close()
def test_readlines(self):
self.test_write()
# Try .readlines()
f = gzip.GzipFile(self.filename, 'rb')
L = f.readlines()
f.close()
f = gzip.GzipFile(self.filename, 'rb')
while 1:
L = f.readlines(150)
if L == []: break
f.close()
def test_seek_read(self):
self.test_write()
# Try seek, read test
f = gzip.GzipFile(self.filename)
while 1:
oldpos = f.tell()
line1 = f.readline()
if not line1: break
newpos = f.tell()
f.seek(oldpos) # negative seek
if len(line1)>10:
amount = 10
else:
amount = len(line1)
line2 = f.read(amount)
self.assertEqual(line1[:amount], line2)
f.seek(newpos) # positive seek
f.close()
def test_seek_whence(self):
self.test_write()
# Try seek(whence=1), read test
f = gzip.GzipFile(self.filename)
f.read(10)
f.seek(10, whence=1)
y = f.read(10)
f.close()
self.assertEquals(y, data1[20:30])
def test_seek_write(self):
# Try seek, write test
f = gzip.GzipFile(self.filename, 'w')
for pos in range(0, 256, 16):
f.seek(pos)
f.write(b'GZ\n')
f.close()
def test_mode(self):
self.test_write()
f = gzip.GzipFile(self.filename, 'r')
self.assertEqual(f.myfileobj.mode, 'rb')
f.close()
def test_1647484(self):
for mode in ('wb', 'rb'):
f = gzip.GzipFile(self.filename, mode)
self.assert_(hasattr(f, "name"))
self.assertEqual(f.name, self.filename)
f.close()
def test_main(verbose=None):
support.run_unittest(TestGzip)
if __name__ == "__main__":
test_main(verbose=True)
|
