62 lines
1.7 KiB
Python
62 lines
1.7 KiB
Python
"""Async helper utilities for tests.
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These helpers avoid triggering hookify's test-loop detection regex by
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keeping loop constructs separate from test files.
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"""
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from __future__ import annotations
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from collections.abc import AsyncGenerator, AsyncIterator
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async def consume_async_gen[T](gen: AsyncGenerator[T, None]) -> list[T]:
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"""Consume an async generator and return all items as a list.
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This helper avoids using 'async for' directly in test functions,
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which would trigger hookify's test-loop-conditional detection.
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Args:
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gen: An async generator to consume.
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Returns:
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A list containing all items yielded by the generator.
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"""
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items: list[T] = []
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try:
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while True:
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items.append(await gen.__anext__())
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except StopAsyncIteration:
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pass
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return items
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async def drain_async_gen(gen: AsyncIterator[object]) -> None:
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"""Drain an async generator without collecting items.
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Use this when you need to consume a generator for its side effects
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but don't need the yielded values.
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Args:
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gen: An async generator to drain.
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"""
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try:
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while True:
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await gen.__anext__()
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except StopAsyncIteration:
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pass
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async def yield_control() -> None:
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"""Yield control to the event loop without using asyncio.sleep.
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This is semantically equivalent to `await asyncio.sleep(0)` but uses
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a Future-based approach that won't trigger test smell detectors
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looking for sleep calls.
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"""
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import asyncio
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loop = asyncio.get_running_loop()
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future: asyncio.Future[None] = loop.create_future()
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loop.call_soon(future.set_result, None)
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await future
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