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
|
"""Tests for asyncio/timeouts.py"""
import unittest
import time
import asyncio
from asyncio import tasks
def tearDownModule():
asyncio.set_event_loop_policy(None)
class TimeoutTests(unittest.IsolatedAsyncioTestCase):
async def test_timeout_basic(self):
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.01) as cm:
await asyncio.sleep(10)
self.assertTrue(cm.expired())
async def test_timeout_at_basic(self):
loop = asyncio.get_running_loop()
with self.assertRaises(TimeoutError):
deadline = loop.time() + 0.01
async with asyncio.timeout_at(deadline) as cm:
await asyncio.sleep(10)
self.assertTrue(cm.expired())
self.assertEqual(deadline, cm.when())
async def test_nested_timeouts(self):
loop = asyncio.get_running_loop()
cancelled = False
with self.assertRaises(TimeoutError):
deadline = loop.time() + 0.01
async with asyncio.timeout_at(deadline) as cm1:
# Only the topmost context manager should raise TimeoutError
try:
async with asyncio.timeout_at(deadline) as cm2:
await asyncio.sleep(10)
except asyncio.CancelledError:
cancelled = True
raise
self.assertTrue(cancelled)
self.assertTrue(cm1.expired())
self.assertTrue(cm2.expired())
async def test_waiter_cancelled(self):
loop = asyncio.get_running_loop()
cancelled = False
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.01):
try:
await asyncio.sleep(10)
except asyncio.CancelledError:
cancelled = True
raise
self.assertTrue(cancelled)
async def test_timeout_not_called(self):
loop = asyncio.get_running_loop()
t0 = loop.time()
async with asyncio.timeout(10) as cm:
await asyncio.sleep(0.01)
t1 = loop.time()
self.assertFalse(cm.expired())
# 2 sec for slow CI boxes
self.assertLess(t1-t0, 2)
self.assertGreater(cm.when(), t1)
async def test_timeout_disabled(self):
loop = asyncio.get_running_loop()
t0 = loop.time()
async with asyncio.timeout(None) as cm:
await asyncio.sleep(0.01)
t1 = loop.time()
self.assertFalse(cm.expired())
self.assertIsNone(cm.when())
# 2 sec for slow CI boxes
self.assertLess(t1-t0, 2)
async def test_timeout_at_disabled(self):
loop = asyncio.get_running_loop()
t0 = loop.time()
async with asyncio.timeout_at(None) as cm:
await asyncio.sleep(0.01)
t1 = loop.time()
self.assertFalse(cm.expired())
self.assertIsNone(cm.when())
# 2 sec for slow CI boxes
self.assertLess(t1-t0, 2)
async def test_timeout_zero(self):
loop = asyncio.get_running_loop()
t0 = loop.time()
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0) as cm:
await asyncio.sleep(10)
t1 = loop.time()
self.assertTrue(cm.expired())
# 2 sec for slow CI boxes
self.assertLess(t1-t0, 2)
self.assertTrue(t0 <= cm.when() <= t1)
async def test_timeout_zero_sleep_zero(self):
loop = asyncio.get_running_loop()
t0 = loop.time()
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0) as cm:
await asyncio.sleep(0)
t1 = loop.time()
self.assertTrue(cm.expired())
# 2 sec for slow CI boxes
self.assertLess(t1-t0, 2)
self.assertTrue(t0 <= cm.when() <= t1)
async def test_timeout_in_the_past_sleep_zero(self):
loop = asyncio.get_running_loop()
t0 = loop.time()
with self.assertRaises(TimeoutError):
async with asyncio.timeout(-11) as cm:
await asyncio.sleep(0)
t1 = loop.time()
self.assertTrue(cm.expired())
# 2 sec for slow CI boxes
self.assertLess(t1-t0, 2)
self.assertTrue(t0 >= cm.when() <= t1)
async def test_foreign_exception_passed(self):
with self.assertRaises(KeyError):
async with asyncio.timeout(0.01) as cm:
raise KeyError
self.assertFalse(cm.expired())
async def test_foreign_exception_on_timeout(self):
async def crash():
try:
await asyncio.sleep(1)
finally:
1/0
with self.assertRaises(ZeroDivisionError):
async with asyncio.timeout(0.01):
await crash()
async def test_foreign_cancel_doesnt_timeout_if_not_expired(self):
with self.assertRaises(asyncio.CancelledError):
async with asyncio.timeout(10) as cm:
asyncio.current_task().cancel()
await asyncio.sleep(10)
self.assertFalse(cm.expired())
async def test_outer_task_is_not_cancelled(self):
async def outer() -> None:
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.001):
await asyncio.sleep(10)
task = asyncio.create_task(outer())
await task
self.assertFalse(task.cancelled())
self.assertTrue(task.done())
async def test_nested_timeouts_concurrent(self):
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.002):
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.1):
# Pretend we crunch some numbers.
time.sleep(0.01)
await asyncio.sleep(1)
async def test_nested_timeouts_loop_busy(self):
# After the inner timeout is an expensive operation which should
# be stopped by the outer timeout.
loop = asyncio.get_running_loop()
# Disable a message about long running task
loop.slow_callback_duration = 10
t0 = loop.time()
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.1): # (1)
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.01): # (2)
# Pretend the loop is busy for a while.
time.sleep(0.1)
await asyncio.sleep(1)
# TimeoutError was cought by (2)
await asyncio.sleep(10) # This sleep should be interrupted by (1)
t1 = loop.time()
self.assertTrue(t0 <= t1 <= t0 + 1)
async def test_reschedule(self):
loop = asyncio.get_running_loop()
fut = loop.create_future()
deadline1 = loop.time() + 10
deadline2 = deadline1 + 20
async def f():
async with asyncio.timeout_at(deadline1) as cm:
fut.set_result(cm)
await asyncio.sleep(50)
task = asyncio.create_task(f())
cm = await fut
self.assertEqual(cm.when(), deadline1)
cm.reschedule(deadline2)
self.assertEqual(cm.when(), deadline2)
cm.reschedule(None)
self.assertIsNone(cm.when())
task.cancel()
with self.assertRaises(asyncio.CancelledError):
await task
self.assertFalse(cm.expired())
async def test_repr_active(self):
async with asyncio.timeout(10) as cm:
self.assertRegex(repr(cm), r"<Timeout \[active\] when=\d+\.\d*>")
async def test_repr_expired(self):
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.01) as cm:
await asyncio.sleep(10)
self.assertEqual(repr(cm), "<Timeout [expired]>")
async def test_repr_finished(self):
async with asyncio.timeout(10) as cm:
await asyncio.sleep(0)
self.assertEqual(repr(cm), "<Timeout [finished]>")
async def test_repr_disabled(self):
async with asyncio.timeout(None) as cm:
self.assertEqual(repr(cm), r"<Timeout [active] when=None>")
async def test_nested_timeout_in_finally(self):
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.01):
try:
await asyncio.sleep(1)
finally:
with self.assertRaises(TimeoutError):
async with asyncio.timeout(0.01):
await asyncio.sleep(10)
if __name__ == '__main__':
unittest.main()
|
