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
|
from rpython.rlib.rStringIO import RStringIO
def test_simple():
f = RStringIO()
f.write('hello')
f.write(' world')
assert f.getvalue() == 'hello world'
def test_write_many():
f = RStringIO()
for j in range(10):
for i in range(253):
f.write(chr(i))
expected = ''.join([chr(i) for j in range(10) for i in range(253)])
assert f.getvalue() == expected
def test_seek():
f = RStringIO()
f.write('0123')
f.write('456')
f.write('789')
f.seek(4)
f.write('AB')
assert f.getvalue() == '0123AB6789'
f.seek(-2, 2)
f.write('CDE')
assert f.getvalue() == '0123AB67CDE'
f.seek(2, 0)
f.seek(5, 1)
f.write('F')
assert f.getvalue() == '0123AB6FCDE'
def test_write_beyond_end():
f = RStringIO()
f.seek(20, 1)
assert f.tell() == 20
f.write('X')
assert f.getvalue() == '\x00' * 20 + 'X'
def test_tell():
f = RStringIO()
f.write('0123')
f.write('456')
assert f.tell() == 7
f.seek(2)
for i in range(3, 20):
f.write('X')
assert f.tell() == i
assert f.getvalue() == '01XXXXXXXXXXXXXXXXX'
f.seek(1)
f.close()
assert f.tell() == 0
def test_read():
f = RStringIO()
assert f.read() == ''
f.write('0123')
f.write('456')
assert f.read() == ''
assert f.read(5) == ''
assert f.tell() == 7
f.seek(1)
assert f.read() == '123456'
assert f.tell() == 7
f.seek(1)
assert f.read(12) == '123456'
assert f.tell() == 7
f.seek(1)
assert f.read(2) == '12'
assert f.read(1) == '3'
assert f.tell() == 4
f.seek(0)
assert f.read() == '0123456'
assert f.tell() == 7
f.seek(0)
assert f.read(7) == '0123456'
assert f.tell() == 7
f.seek(15)
assert f.read(2) == ''
assert f.tell() == 15
def test_readline():
f = RStringIO()
f.write('foo\nbar\nbaz')
f.seek(0)
assert f.readline() == 'foo\n'
assert f.readline(2) == 'ba'
assert f.readline() == 'r\n'
assert f.readline() == 'baz'
assert f.readline() == ''
def test_truncate():
f = RStringIO()
f.truncate(20)
assert f.getvalue() == ''
assert f.tell() == 0
f.write('\x00' * 25)
f.seek(12)
f.truncate(20)
assert f.getvalue() == '\x00' * 20
assert f.tell() == 20
f.write('more')
f.truncate(20)
assert f.getvalue() == '\x00' * 20
assert f.tell() == 20
f.write('hello')
f.write(' world')
f.truncate(30)
assert f.getvalue() == '\x00' * 20 + 'hello worl'
f.truncate(25)
assert f.getvalue() == '\x00' * 20 + 'hello'
f.write('baz')
f.write('egg')
f.truncate(3)
assert f.getvalue() == '\x00' * 3
assert f.tell() == 3
def test_truncate_end():
f = RStringIO()
f.write("abc")
f.seek(0)
f.truncate(0)
assert f.getvalue() == ""
def test_bug():
f = RStringIO()
f.write('0')
f.write('1')
f.write('2')
assert f.getvalue() == '012'
f.write('3')
assert f.getvalue() == '0123'
def test_stress():
import cStringIO, random
f = RStringIO()
expected = cStringIO.StringIO()
for i in range(2000):
r = random.random()
if r < 0.15:
p = random.randrange(-5000, 10000)
if r < 0.05:
mode = 0
elif r < 0.1:
mode = 1
else:
mode = 2
print 'seek', p, mode
f.seek(p, mode)
expected.seek(p, mode)
elif r < 0.6:
buf = str(random.random())
print 'write %d bytes' % len(buf)
f.write(buf)
expected.write(buf)
elif r < 0.92:
n = random.randrange(0, 100)
print 'read %d bytes' % n
data1 = f.read(n)
data2 = expected.read(n)
assert data1 == data2
elif r < 0.97:
print 'check tell()'
assert f.tell() == expected.tell()
else:
print 'check getvalue()'
assert f.getvalue() == expected.getvalue()
assert f.getvalue() == expected.getvalue()
assert f.tell() == expected.tell()
|
