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
|
import asyncio
import contextlib
import functools
import random
from typing import TYPE_CHECKING
from unittest import mock
from pyinstrument import stack_sampler
if TYPE_CHECKING:
from trio.testing import MockClock
class FakeClock:
def __init__(self) -> None:
self.time = random.random() * 1e6
def get_time(self):
return self.time
def sleep(self, duration):
self.time += duration
@contextlib.contextmanager
def fake_time(fake_clock=None):
fake_clock = fake_clock or FakeClock()
stack_sampler.get_stack_sampler().timer_func = fake_clock.get_time
try:
with mock.patch("time.sleep", new=fake_clock.sleep):
yield fake_clock
finally:
stack_sampler.get_stack_sampler().timer_func = None
class FakeClockAsyncio:
# this implementation mostly lifted from
# https://aiotools.readthedocs.io/en/latest/_modules/aiotools/timer.html#VirtualClock
# License: https://github.com/achimnol/aiotools/blob/800f7f1bce086b0c83658bad8377e6cb1908e22f/LICENSE
# Copyright (c) 2017 Joongi Kim
def __init__(self) -> None:
self.time = random.random() * 1e6
def get_time(self):
return self.time
def sleep(self, duration):
self.time += duration
def _virtual_select(self, orig_select, timeout):
self.time += timeout
return orig_select(0) # override the timeout to zero
@contextlib.contextmanager
def fake_time_asyncio(loop=None):
loop = loop or asyncio.get_running_loop()
fake_clock = FakeClockAsyncio()
# fmt: off
with mock.patch.object(
loop._selector, # type: ignore
"select",
new=functools.partial(fake_clock._virtual_select, loop._selector.select), # type: ignore
), mock.patch.object(
loop,
"time",
new=fake_clock.get_time
), fake_time(fake_clock):
yield fake_clock
# fmt: on
class FakeClockTrio:
def __init__(self, clock: "MockClock") -> None:
self.trio_clock = clock
def get_time(self):
return self.trio_clock.current_time()
def sleep(self, duration):
self.trio_clock.jump(duration)
@contextlib.contextmanager
def fake_time_trio():
from trio.testing import MockClock
trio_clock = MockClock(autojump_threshold=0)
fake_clock = FakeClockTrio(trio_clock)
with fake_time(fake_clock):
yield fake_clock
|
