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# ========================================================================== #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2024 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
import asyncio
import pytest
from kvmd.aiotools import AioExclusiveRegion
from kvmd.aiotools import shield_fg
# =====
class RegionIsBusyError(Exception):
pass
# =====
@pytest.mark.asyncio
async def test_ok__region__access_one() -> None:
region = AioExclusiveRegion(RegionIsBusyError)
async def func() -> None:
assert not region.is_busy()
async with region:
assert region.is_busy()
assert not region.is_busy()
await func()
assert not region.is_busy()
await region.exit()
assert not region.is_busy()
@pytest.mark.asyncio
async def test_fail__region__access_one() -> None:
region = AioExclusiveRegion(RegionIsBusyError)
async def func() -> None:
assert not region.is_busy()
async with region:
assert region.is_busy()
await region.enter()
assert not region.is_busy()
with pytest.raises(RegionIsBusyError):
await func()
assert not region.is_busy()
await region.exit()
assert not region.is_busy()
# =====
@pytest.mark.asyncio
async def test_ok__region__access_two() -> None:
region = AioExclusiveRegion(RegionIsBusyError)
async def func1() -> None:
async with region:
await asyncio.sleep(1)
print("done func1()")
async def func2() -> None:
await asyncio.sleep(2)
print("waiking up func2()")
async with region:
await asyncio.sleep(1)
print("done func2()")
await asyncio.gather(func1(), func2())
assert not region.is_busy()
await region.exit()
assert not region.is_busy()
@pytest.mark.asyncio
async def test_fail__region__access_two() -> None:
region = AioExclusiveRegion(RegionIsBusyError)
async def func1() -> None:
async with region:
await asyncio.sleep(2)
print("done func1()")
async def func2() -> None:
await asyncio.sleep(1)
async with region:
await asyncio.sleep(1)
print("done func2()")
results = await asyncio.gather(func1(), func2(), return_exceptions=True)
assert results[0] is None
assert type(results[1]) == RegionIsBusyError # pylint: disable=unidiomatic-typecheck
assert not region.is_busy()
await region.exit()
assert not region.is_busy()
# =====
@pytest.mark.asyncio
async def test_ok__shield_fg() -> None:
ops: list[str] = []
async def foo(op: str, delay: float) -> None: # pylint: disable=disallowed-name
await asyncio.sleep(delay)
ops.append(op)
async def bar() -> None: # pylint: disable=disallowed-name
try:
try:
try:
raise RuntimeError()
finally:
await shield_fg(foo("foo1", 2.0))
ops.append("foo1-noexc")
finally:
await shield_fg(foo("foo2", 1.0))
ops.append("foo2-noexc")
finally:
ops.append("done")
task = asyncio.create_task(bar())
await asyncio.sleep(0.1)
task.cancel()
with pytest.raises(asyncio.CancelledError):
await task
assert ops == ["foo1", "foo2", "foo2-noexc", "done"]
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