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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
|
# -*- coding: utf-8 -*-
#
# Copyright (C) 2019 Radim Rehurek <me@radimrehurek.com>
#
# This code is distributed under the terms and conditions
# from the MIT License (MIT).
#
import functools
import gzip
import unittest
import pytest
import responses
import smart_open.http
import smart_open.s3
import smart_open.constants
import requests
BYTES = b'i tried so hard and got so far but in the end it doesn\'t even matter'
GZIPPED_BYTES = gzip.compress(BYTES)
URL = 'http://localhost'
HTTPS_URL = 'https://localhost'
HEADERS = {
'Accept-Ranges': 'bytes',
}
def request_callback(request, headers=HEADERS, data=BYTES):
headers = headers.copy()
range_string = request.headers.get('range', 'bytes=0-')
start, end = range_string.replace('bytes=', '', 1).split('-', 1)
start = int(start)
end = int(end) if end else len(data)
data = data[start:end]
headers['Content-Length'] = str(len(data))
return (200, headers, data)
class HttpTest(unittest.TestCase):
@responses.activate
def test_read_all(self):
responses.add(responses.GET, URL, body=BYTES)
reader = smart_open.http.SeekableBufferedInputBase(URL)
read_bytes = reader.read()
self.assertEqual(BYTES, read_bytes)
@responses.activate
def test_seek_from_start(self):
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.http.SeekableBufferedInputBase(URL)
reader.seek(10)
self.assertEqual(reader.tell(), 10)
read_bytes = reader.read(size=10)
self.assertEqual(reader.tell(), 20)
self.assertEqual(BYTES[10:20], read_bytes)
reader.seek(20)
read_bytes = reader.read(size=10)
self.assertEqual(BYTES[20:30], read_bytes)
reader.seek(0)
read_bytes = reader.read(size=10)
self.assertEqual(BYTES[:10], read_bytes)
@responses.activate
def test_seek_from_current(self):
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.http.SeekableBufferedInputBase(URL)
reader.seek(10)
read_bytes = reader.read(size=10)
self.assertEqual(BYTES[10:20], read_bytes)
self.assertEqual(reader.tell(), 20)
reader.seek(10, whence=smart_open.constants.WHENCE_CURRENT)
self.assertEqual(reader.tell(), 30)
read_bytes = reader.read(size=10)
self.assertEqual(reader.tell(), 40)
self.assertEqual(BYTES[30:40], read_bytes)
@responses.activate
def test_seek_from_end(self):
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.http.SeekableBufferedInputBase(URL)
reader.seek(-10, whence=smart_open.constants.WHENCE_END)
self.assertEqual(reader.tell(), len(BYTES) - 10)
read_bytes = reader.read(size=10)
self.assertEqual(reader.tell(), len(BYTES))
self.assertEqual(BYTES[-10:], read_bytes)
@responses.activate
def test_headers_are_as_assigned(self):
responses.add_callback(responses.GET, URL, callback=request_callback)
# use default _HEADERS
x = smart_open.http.BufferedInputBase(URL)
# set different ones
x.headers['Accept-Encoding'] = 'compress, gzip'
x.headers['Other-Header'] = 'value'
# use default again, global shoudn't overwritten from x
y = smart_open.http.BufferedInputBase(URL)
# should be default headers
self.assertEqual(y.headers, {'Accept-Encoding': 'identity'})
# should be assigned headers
self.assertEqual(x.headers, {'Accept-Encoding': 'compress, gzip', 'Other-Header': 'value'})
@responses.activate
def test_headers(self):
"""Does the top-level http.open function handle headers correctly?"""
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.http.open(URL, 'rb', headers={'Foo': 'bar'})
self.assertEqual(reader.headers['Foo'], 'bar')
@responses.activate
def test_https_seek_start(self):
"""Did the seek start over HTTPS work?"""
responses.add_callback(responses.GET, HTTPS_URL, callback=request_callback)
with smart_open.open(HTTPS_URL, "rb") as fin:
read_bytes_1 = fin.read(size=10)
fin.seek(0)
read_bytes_2 = fin.read(size=10)
self.assertEqual(read_bytes_1, read_bytes_2)
@responses.activate
def test_https_seek_forward(self):
"""Did the seek forward over HTTPS work?"""
responses.add_callback(responses.GET, HTTPS_URL, callback=request_callback)
with smart_open.open(HTTPS_URL, "rb") as fin:
fin.seek(10)
read_bytes = fin.read(size=10)
self.assertEqual(BYTES[10:20], read_bytes)
@responses.activate
def test_https_seek_reverse(self):
"""Did the seek in reverse over HTTPS work?"""
responses.add_callback(responses.GET, HTTPS_URL, callback=request_callback)
with smart_open.open(HTTPS_URL, "rb") as fin:
read_bytes_1 = fin.read(size=10)
fin.seek(-10, whence=smart_open.constants.WHENCE_CURRENT)
read_bytes_2 = fin.read(size=10)
self.assertEqual(read_bytes_1, read_bytes_2)
@responses.activate
def test_timeout_attribute(self):
timeout = 1
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.open(URL, "rb", transport_params={'timeout': timeout})
assert hasattr(reader, 'timeout')
assert reader.timeout == timeout
@responses.activate
def test_session_attribute(self):
session = requests.Session()
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.open(URL, "rb", transport_params={'session': session})
assert hasattr(reader, 'session')
assert reader.session == session
assert reader.read() == BYTES
@responses.activate
def test_seek_implicitly_enabled(numbytes=10):
"""Can we seek even if the server hasn't explicitly allowed it?"""
callback = functools.partial(request_callback, headers={})
responses.add_callback(responses.GET, HTTPS_URL, callback=callback)
with smart_open.open(HTTPS_URL, 'rb') as fin:
assert fin.seekable()
first = fin.read(size=numbytes)
fin.seek(-numbytes, whence=smart_open.constants.WHENCE_CURRENT)
second = fin.read(size=numbytes)
assert first == second
@responses.activate
def test_seek_implicitly_disabled():
"""Does seeking fail when the server has explicitly disabled it?"""
callback = functools.partial(request_callback, headers={'Accept-Ranges': 'none'})
responses.add_callback(responses.GET, HTTPS_URL, callback=callback)
with smart_open.open(HTTPS_URL, 'rb') as fin:
assert not fin.seekable()
fin.read()
with pytest.raises(OSError):
fin.seek(0)
@responses.activate
def test_gzip_encoding_default_headers():
"""Does Accept-Encoding: identity prevent gzip compression?"""
def callback(request):
# Server respects Accept-Encoding: identity and sends uncompressed
headers = HEADERS.copy()
headers['Content-Length'] = str(len(BYTES))
return (200, headers, BYTES)
responses.add_callback(responses.GET, URL, callback=callback)
reader = smart_open.http.SeekableBufferedInputBase(URL)
read_bytes = reader.read()
assert read_bytes == BYTES
@responses.activate
def test_gzip_encoding_explicit_request():
"""Does Accept-Encoding: gzip properly decompress via response.raw?"""
def callback(request):
# Server sees gzip in Accept-Encoding and returns compressed data
if 'gzip' in request.headers.get('Accept-Encoding', ''):
headers = HEADERS.copy()
headers['Content-Encoding'] = 'gzip'
headers['Content-Length'] = str(len(GZIPPED_BYTES))
return (200, headers, GZIPPED_BYTES)
else:
headers = HEADERS.copy()
headers['Content-Length'] = str(len(BYTES))
return (200, headers, BYTES)
responses.add_callback(responses.GET, URL, callback=callback)
# Explicitly request gzip encoding
reader = smart_open.http.SeekableBufferedInputBase(URL, headers={'Accept-Encoding': 'gzip'})
read_bytes = reader.read()
assert read_bytes == BYTES # Should be decompressed by requests/urllib3
# Combining multiple read calls also works
reader.seek(0)
partial = reader.read(2) + reader.read(1000)
assert partial == BYTES
@responses.activate
def test_read_after_read_to_eof():
"""Reading after reading to EOF should return empty bytes."""
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.http.SeekableBufferedInputBase(URL)
# Read to EOF
result = reader.read(-1)
assert len(result) == len(BYTES)
assert reader.tell() == len(BYTES)
# Read should return empty bytes
result = reader.read()
assert result == b""
# Read with size should also return empty bytes
result = reader.read(10)
assert result == b""
@responses.activate
def test_read_after_seek_to_eof():
"""Reading after seeking to EOF should return empty bytes."""
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.http.SeekableBufferedInputBase(URL)
# Seek to EOF
reader.seek(0, whence=smart_open.constants.WHENCE_END)
assert reader.tell() == len(BYTES)
# Read should return empty bytes
result = reader.read()
assert result == b""
# Read with size should also return empty bytes
result = reader.read(10)
assert result == b""
@responses.activate
def test_read_with_invalid_size():
"""Read with size < -1 should raise ValueError."""
responses.add_callback(responses.GET, URL, callback=request_callback)
reader = smart_open.http.SeekableBufferedInputBase(URL)
with pytest.raises(ValueError, match='size must be >= -1'):
reader.read(-2)
|
