Repository navigation
Expand file tree
/
Copy pathtest_utils.py
More file actions
526 lines (403 loc) · 14.6 KB
/
Copy pathtest_utils.py
File metadata and controls
526 lines (403 loc) · 14.6 KB
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
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
"""Utilities shared by tests."""
import collections
import contextlib
import io
import logging
import os
import re
import socket
import socketserver
import sys
import tempfile
import threading
import time
import unittest
import weakref
from unittest import mock
from http.server import HTTPServer
from wsgiref.simple_server import WSGIRequestHandler, WSGIServer
try:
import ssl
except ImportError: # pragma: no cover
ssl = None
from . import base_events
from . import compat
from . import events
from . import futures
from . import selectors
from . import tasks
from .coroutines import coroutine
from .log import logger
from test import support
if sys.platform == 'win32': # pragma: no cover
from .windows_utils import socketpair
else:
from socket import socketpair # pragma: no cover
def dummy_ssl_context():
if ssl is None:
return None
else:
return ssl.SSLContext(ssl.PROTOCOL_SSLv23)
def run_briefly(loop):
@coroutine
def once():
pass
gen = once()
t = loop.create_task(gen)
# Don't log a warning if the task is not done after run_until_complete().
# It occurs if the loop is stopped or if a task raises a BaseException.
t._log_destroy_pending = False
try:
loop.run_until_complete(t)
finally:
gen.close()
def run_until(loop, pred, timeout=30):
deadline = time.time() + timeout
while not pred():
if timeout is not None:
timeout = deadline - time.time()
if timeout <= 0:
raise futures.TimeoutError()
loop.run_until_complete(tasks.sleep(0.001, loop=loop))
def run_once(loop):
"""Legacy API to run once through the event loop.
This is the recommended pattern for test code. It will poll the
selector once and run all callbacks scheduled in response to I/O
events.
"""
loop.call_soon(loop.stop)
loop.run_forever()
class SilentWSGIRequestHandler(WSGIRequestHandler):
def get_stderr(self):
return io.StringIO()
def log_message(self, format, *args):
pass
class SilentWSGIServer(WSGIServer):
request_timeout = 2
def get_request(self):
request, client_addr = super().get_request()
request.settimeout(self.request_timeout)
return request, client_addr
def handle_error(self, request, client_address):
pass
class SSLWSGIServerMixin:
def finish_request(self, request, client_address):
# The relative location of our test directory (which
# contains the ssl key and certificate files) differs
# between the stdlib and stand-alone asyncio.
# Prefer our own if we can find it.
here = os.path.join(os.path.dirname(__file__), '..', 'tests')
if not os.path.isdir(here):
here = os.path.join(os.path.dirname(os.__file__),
'test', 'test_asyncio')
keyfile = os.path.join(here, 'ssl_key.pem')
certfile = os.path.join(here, 'ssl_cert.pem')
context = ssl.SSLContext()
context.load_cert_chain(certfile, keyfile)
ssock = context.wrap_socket(request, server_side=True)
try:
self.RequestHandlerClass(ssock, client_address, self)
ssock.close()
except OSError:
# maybe socket has been closed by peer
pass
class SSLWSGIServer(SSLWSGIServerMixin, SilentWSGIServer):
pass
def _run_test_server(*, address, use_ssl=False, server_cls, server_ssl_cls):
def app(environ, start_response):
status = '200 OK'
headers = [('Content-type', 'text/plain')]
start_response(status, headers)
return [b'Test message']
# Run the test WSGI server in a separate thread in order not to
# interfere with event handling in the main thread
server_class = server_ssl_cls if use_ssl else server_cls
httpd = server_class(address, SilentWSGIRequestHandler)
httpd.set_app(app)
httpd.address = httpd.server_address
server_thread = threading.Thread(
target=lambda: httpd.serve_forever(poll_interval=0.05))
server_thread.start()
try:
yield httpd
finally:
httpd.shutdown()
httpd.server_close()
server_thread.join()
if hasattr(socket, 'AF_UNIX'):
class UnixHTTPServer(socketserver.UnixStreamServer, HTTPServer):
def server_bind(self):
socketserver.UnixStreamServer.server_bind(self)
self.server_name = '127.0.0.1'
self.server_port = 80
class UnixWSGIServer(UnixHTTPServer, WSGIServer):
request_timeout = 2
def server_bind(self):
UnixHTTPServer.server_bind(self)
self.setup_environ()
def get_request(self):
request, client_addr = super().get_request()
request.settimeout(self.request_timeout)
# Code in the stdlib expects that get_request
# will return a socket and a tuple (host, port).
# However, this isn't true for UNIX sockets,
# as the second return value will be a path;
# hence we return some fake data sufficient
# to get the tests going
return request, ('127.0.0.1', '')
class SilentUnixWSGIServer(UnixWSGIServer):
def handle_error(self, request, client_address):
pass
class UnixSSLWSGIServer(SSLWSGIServerMixin, SilentUnixWSGIServer):
pass
def gen_unix_socket_path():
with tempfile.NamedTemporaryFile() as file:
return file.name
@contextlib.contextmanager
def unix_socket_path():
path = gen_unix_socket_path()
try:
yield path
finally:
try:
os.unlink(path)
except OSError:
pass
@contextlib.contextmanager
def run_test_unix_server(*, use_ssl=False):
with unix_socket_path() as path:
yield from _run_test_server(address=path, use_ssl=use_ssl,
server_cls=SilentUnixWSGIServer,
server_ssl_cls=UnixSSLWSGIServer)
@contextlib.contextmanager
def run_test_server(*, host='127.0.0.1', port=0, use_ssl=False):
yield from _run_test_server(address=(host, port), use_ssl=use_ssl,
server_cls=SilentWSGIServer,
server_ssl_cls=SSLWSGIServer)
def make_test_protocol(base):
dct = {}
for name in dir(base):
if name.startswith('__') and name.endswith('__'):
# skip magic names
continue
dct[name] = MockCallback(return_value=None)
return type('TestProtocol', (base,) + base.__bases__, dct)()
class TestSelector(selectors.BaseSelector):
def __init__(self):
self.keys = {}
def register(self, fileobj, events, data=None):
key = selectors.SelectorKey(fileobj, 0, events, data)
self.keys[fileobj] = key
return key
def unregister(self, fileobj):
return self.keys.pop(fileobj)
def select(self, timeout):
return []
def get_map(self):
return self.keys
class TestLoop(base_events.BaseEventLoop):
"""Loop for unittests.
It manages self time directly.
If something scheduled to be executed later then
on next loop iteration after all ready handlers done
generator passed to __init__ is calling.
Generator should be like this:
def gen():
...
when = yield ...
... = yield time_advance
Value returned by yield is absolute time of next scheduled handler.
Value passed to yield is time advance to move loop's time forward.
"""
def __init__(self, gen=None):
super().__init__()
if gen is None:
def gen():
yield
self._check_on_close = False
else:
self._check_on_close = True
self._gen = gen()
next(self._gen)
self._time = 0
self._clock_resolution = 1e-9
self._timers = []
self._selector = TestSelector()
self.readers = {}
self.writers = {}
self.reset_counters()
self._transports = weakref.WeakValueDictionary()
def time(self):
return self._time
def advance_time(self, advance):
"""Move test time forward."""
if advance:
self._time += advance
def close(self):
super().close()
if self._check_on_close:
try:
self._gen.send(0)
except StopIteration:
pass
else: # pragma: no cover
raise AssertionError("Time generator is not finished")
def _add_reader(self, fd, callback, *args):
self.readers[fd] = events.Handle(callback, args, self)
def _remove_reader(self, fd):
self.remove_reader_count[fd] += 1
if fd in self.readers:
del self.readers[fd]
return True
else:
return False
def assert_reader(self, fd, callback, *args):
if fd not in self.readers:
raise AssertionError(f'fd {fd} is not registered')
handle = self.readers[fd]
if handle._callback != callback:
raise AssertionError(
f'unexpected callback: {handle._callback} != {callback}')
if handle._args != args:
raise AssertionError(
f'unexpected callback args: {handle._args} != {args}')
def assert_no_reader(self, fd):
if fd in self.readers:
raise AssertionError(f'fd {fd} is registered')
def _add_writer(self, fd, callback, *args):
self.writers[fd] = events.Handle(callback, args, self)
def _remove_writer(self, fd):
self.remove_writer_count[fd] += 1
if fd in self.writers:
del self.writers[fd]
return True
else:
return False
def assert_writer(self, fd, callback, *args):
assert fd in self.writers, 'fd {} is not registered'.format(fd)
handle = self.writers[fd]
assert handle._callback == callback, '{!r} != {!r}'.format(
handle._callback, callback)
assert handle._args == args, '{!r} != {!r}'.format(
handle._args, args)
def _ensure_fd_no_transport(self, fd):
try:
transport = self._transports[fd]
except KeyError:
pass
else:
raise RuntimeError(
'File descriptor {!r} is used by transport {!r}'.format(
fd, transport))
def add_reader(self, fd, callback, *args):
"""Add a reader callback."""
self._ensure_fd_no_transport(fd)
return self._add_reader(fd, callback, *args)
def remove_reader(self, fd):
"""Remove a reader callback."""
self._ensure_fd_no_transport(fd)
return self._remove_reader(fd)
def add_writer(self, fd, callback, *args):
"""Add a writer callback.."""
self._ensure_fd_no_transport(fd)
return self._add_writer(fd, callback, *args)
def remove_writer(self, fd):
"""Remove a writer callback."""
self._ensure_fd_no_transport(fd)
return self._remove_writer(fd)
def reset_counters(self):
self.remove_reader_count = collections.defaultdict(int)
self.remove_writer_count = collections.defaultdict(int)
def _run_once(self):
super()._run_once()
for when in self._timers:
advance = self._gen.send(when)
self.advance_time(advance)
self._timers = []
def call_at(self, when, callback, *args):
self._timers.append(when)
return super().call_at(when, callback, *args)
def _process_events(self, event_list):
return
def _write_to_self(self):
pass
def MockCallback(**kwargs):
return mock.Mock(spec=['__call__'], **kwargs)
class MockPattern(str):
"""A regex based str with a fuzzy __eq__.
Use this helper with 'mock.assert_called_with', or anywhere
where a regex comparison between strings is needed.
For instance:
mock_call.assert_called_with(MockPattern('spam.*ham'))
"""
def __eq__(self, other):
return bool(re.search(str(self), other, re.S))
def get_function_source(func):
source = events._get_function_source(func)
if source is None:
raise ValueError("unable to get the source of %r" % (func,))
return source
class TestCase(unittest.TestCase):
@staticmethod
def close_loop(loop):
executor = loop._default_executor
if executor is not None:
executor.shutdown(wait=True)
loop.close()
def set_event_loop(self, loop, *, cleanup=True):
assert loop is not None
# ensure that the event loop is passed explicitly in asyncio
events.set_event_loop(None)
if cleanup:
self.addCleanup(self.close_loop, loop)
def new_test_loop(self, gen=None):
loop = TestLoop(gen)
self.set_event_loop(loop)
return loop
def unpatch_get_running_loop(self):
events._get_running_loop = self._get_running_loop
def setUp(self):
self._get_running_loop = events._get_running_loop
events._get_running_loop = lambda: None
self._thread_cleanup = support.threading_setup()
def tearDown(self):
self.unpatch_get_running_loop()
events.set_event_loop(None)
# Detect CPython bug #23353: ensure that yield/yield-from is not used
# in an except block of a generator
self.assertEqual(sys.exc_info(), (None, None, None))
self.doCleanups()
support.threading_cleanup(*self._thread_cleanup)
support.reap_children()
if not compat.PY34:
# Python 3.3 compatibility
def subTest(self, *args, **kwargs):
class EmptyCM:
def __enter__(self):
pass
def __exit__(self, *exc):
pass
return EmptyCM()
@contextlib.contextmanager
def disable_logger():
"""Context manager to disable asyncio logger.
For example, it can be used to ignore warnings in debug mode.
"""
old_level = logger.level
try:
logger.setLevel(logging.CRITICAL+1)
yield
finally:
logger.setLevel(old_level)
def mock_nonblocking_socket(proto=socket.IPPROTO_TCP, type=socket.SOCK_STREAM,
family=socket.AF_INET):
"""Create a mock of a non-blocking socket."""
sock = mock.MagicMock(socket.socket)
sock.proto = proto
sock.type = type
sock.family = family
sock.gettimeout.return_value = 0.0
return sock
def force_legacy_ssl_support():
return mock.patch('asyncio.sslproto._is_sslproto_available',
return_value=False)