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import asyncio
from collections.abc import AsyncIterator, Awaitable, Iterator
from contextlib import asynccontextmanager, contextmanager
from typing import Callable, Optional, TypeVar
import pytest
from advanced_alchemy.utils.sync_tools import (
CapacityLimiter,
async_,
await_,
ensure_async_,
run_,
with_ensure_async_,
)
T = TypeVar("T")
async def test_ensure_async_() -> None:
@ensure_async_
def sync_func(x: int) -> int:
return x * 2
@ensure_async_ # type: ignore[arg-type]
async def async_func(x: int) -> int:
return x * 2
assert await sync_func(21) == 42
assert await async_func(21) == 42
@pytest.mark.asyncio
async def test_with_ensure_async_() -> None:
@contextmanager
def sync_cm() -> Iterator[int]:
yield 42
@asynccontextmanager
async def async_cm() -> AsyncIterator[int]:
yield 42
async with with_ensure_async_(sync_cm()) as value:
assert value == 42
async with with_ensure_async_(async_cm()) as value:
assert value == 42
@pytest.mark.asyncio
async def test_capacity_limiter() -> None:
limiter = CapacityLimiter(1)
async with limiter:
assert limiter.total_tokens == 0
assert limiter.total_tokens == 1
def test_run_() -> None:
async def async_func(x: int) -> int:
return x * 2
sync_func = run_(async_func)
assert sync_func(21) == 42
def test_await_() -> None:
async def async_func(x: int) -> int:
return x * 2
sync_func = await_(async_func, raise_sync_error=False)
assert sync_func(21) == 42
async def test_async_() -> None:
def sync_func(x: int) -> int:
return x * 2
async_func = async_(sync_func)
assert await async_func(21) == 42
async def test_capacity_limiter_setter() -> None:
limiter = CapacityLimiter(2)
assert limiter.total_tokens == 2
limiter.total_tokens = 5
assert limiter.total_tokens == 5
async def test_capacity_limiter_release_without_acquire() -> None:
limiter = CapacityLimiter(1)
# Release without acquire should not raise, but will increase tokens beyond initial
limiter.release()
assert limiter.total_tokens == 2
async def test_run_with_running_loop(monkeypatch: pytest.MonkeyPatch) -> None:
async def async_func(x: int) -> int:
return x * 2
sync_func = run_(async_func)
# Simulate running loop
class DummyLoop:
def is_running(self) -> bool:
return True
monkeypatch.setattr("asyncio.get_running_loop", lambda: DummyLoop())
# The new implementation should handle running loops correctly using ThreadPoolExecutor
result = sync_func(1)
assert result == 2
def test_run_with_uvloop(monkeypatch: pytest.MonkeyPatch) -> None:
async def async_func(x: int) -> int:
return x * 2
sync_func = run_(async_func)
monkeypatch.setattr(
"advanced_alchemy.utils.sync_tools.uvloop", type("UVLoop", (), {"install": staticmethod(lambda: None)})()
)
monkeypatch.setattr("sys.platform", "linux")
# Should not raise
assert sync_func(2) == 4
def test_await_no_loop_raises() -> None:
async def async_func(x: int) -> int:
return x * 2
sync_func = await_(async_func, raise_sync_error=True)
# Remove running loop
orig = asyncio.get_running_loop
asyncio.get_running_loop = lambda: (_ for _ in ()).throw(RuntimeError())
try:
with pytest.raises(RuntimeError, match="await_ called without a running event loop and raise_sync_error=True"):
sync_func(1)
finally:
asyncio.get_running_loop = orig
def test_await_in_async_task(monkeypatch: pytest.MonkeyPatch) -> None:
from typing import Optional
async def async_func(x: int) -> int:
return x * 2
sync_func = await_(async_func, raise_sync_error=True)
class DummyLoop:
def __init__(self) -> None:
self.running = True
def is_running(self) -> bool:
return self.running
def _run_once(self) -> None:
# Simulate loop iteration
self.running = False
class DummyTask:
pass
class DummyFuture:
def __init__(self) -> None:
self._done = False
self._result = 4
def done(self) -> bool:
return self._done
def result(self) -> int:
self._done = True
return self._result
loop = DummyLoop()
monkeypatch.setattr("asyncio.get_running_loop", lambda: loop)
def dummy_current_task(loop: Optional[object] = None) -> DummyTask:
return DummyTask()
def dummy_ensure_future(coro: object, loop: object = None) -> DummyFuture:
return DummyFuture()
monkeypatch.setattr("asyncio.current_task", dummy_current_task)
monkeypatch.setattr("asyncio.ensure_future", dummy_ensure_future)
# The new implementation uses _run_once() workaround and should succeed
result = sync_func(1)
assert result == 4
def test_await_non_running_loop(monkeypatch: pytest.MonkeyPatch) -> None:
async def async_func(x: int) -> int:
return x * 2
sync_func = await_(async_func, raise_sync_error=True)
class DummyLoop:
def is_running(self) -> bool:
return False
monkeypatch.setattr("asyncio.get_running_loop", lambda: DummyLoop())
with pytest.raises(RuntimeError, match="await_ found a non-running loop via get_running_loop"):
sync_func(1)
def test_ensure_async_identity() -> None:
async def afunc(x: int) -> int:
return x
wrapped: Callable[[int], Awaitable[int]] = ensure_async_(afunc)
assert wrapped is afunc
def test_ensure_async_awaitable() -> None:
def sync_func(x: int) -> Awaitable[int]:
async def coro() -> int:
return x * 2
return coro()
wrapped: Callable[[int], Awaitable[int]] = ensure_async_(sync_func)
async def runner() -> int:
return await wrapped(21)
assert asyncio.run(runner()) == 42
def test_ensure_async_non_awaitable() -> None:
def sync_func(x: int) -> int:
return x * 2
wrapped = ensure_async_(sync_func)
async def runner() -> int:
return await wrapped(21)
assert asyncio.run(runner()) == 42
def test_context_manager_wrapper_exceptions() -> None:
from types import TracebackType
class DummyCM:
def __enter__(self) -> int:
raise ValueError("enter error")
def __exit__(
self,
exc_type: Optional[type[BaseException]],
exc_val: Optional[BaseException],
exc_tb: Optional[TracebackType],
) -> None:
raise ValueError("exit error")
wrapper = with_ensure_async_(DummyCM())
with pytest.raises(ValueError, match="enter error"):
asyncio.run(wrapper.__aenter__())
# __aexit__ should propagate exception
with pytest.raises(ValueError, match="exit error"):
asyncio.run(wrapper.__aexit__(None, None, None))
def test_with_ensure_async_identity() -> None:
from types import TracebackType
class DummyAsyncCM:
async def __aenter__(self) -> int:
return 42
async def __aexit__(
self,
exc_type: Optional[type[BaseException]],
exc_val: Optional[BaseException],
exc_tb: Optional[TracebackType],
) -> None:
return None
acm = DummyAsyncCM()
assert with_ensure_async_(acm) is acm
async def test_async_with_custom_limiter() -> None:
def sync_func(x: int) -> int:
return x * 2
limiter = CapacityLimiter(1)
async_func = async_(sync_func, limiter=limiter)
async def runner() -> int:
return await async_func(21)
assert await runner() == 42
|
