From e2dcf3e375d4ebc3bcb51fbc3561149a4b3b801b Mon Sep 17 00:00:00 2001
From: Lumir Balhar <lbalhar@redhat.com>
Date: Fri, 17 Jan 2025 14:57:03 +0100
Subject: [PATCH] Switch from asyncio.iscoroutinefunction to inspect.

The former causes: DeprecationWarning:
'asyncio.iscoroutinefunction' is deprecated and slated for removal
in Python 3.16; use inspect.iscoroutinefunction() instead.

Fixes: https://github.com/aio-libs/async-lru/issues/635
---
 async_lru/__init__.py | 3 ++-
 tests/test_basic.py   | 7 ++++---
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/async_lru/__init__.py b/async_lru/__init__.py
index 228ebad..2d10b80 100644
--- a/async_lru/__init__.py
+++ b/async_lru/__init__.py
@@ -1,5 +1,6 @@
 import asyncio
 import dataclasses
+import inspect
 import sys
 from asyncio.coroutines import _is_coroutine  # type: ignore[attr-defined]
 from functools import _CacheInfo, _make_key, partial, partialmethod
@@ -299,7 +300,7 @@ def wrapper(fn: _CBP[_R]) -> _LRUCacheWrapper[_R]:
         while isinstance(origin, (partial, partialmethod)):
             origin = origin.func
 
-        if not asyncio.iscoroutinefunction(origin):
+        if not inspect.iscoroutinefunction(origin):
             raise RuntimeError(f"Coroutine function is required, got {fn!r}")
 
         # functools.partialmethod support
diff --git a/tests/test_basic.py b/tests/test_basic.py
index acc57a2..16d8e68 100644
--- a/tests/test_basic.py
+++ b/tests/test_basic.py
@@ -1,4 +1,5 @@
 import asyncio
+import inspect
 import platform
 import sys
 from functools import _CacheInfo, partial
@@ -27,7 +28,7 @@ async def test_alru_cache_deco(check_lru: Callable[..., None]) -> None:
     async def coro() -> None:
         pass
 
-    assert asyncio.iscoroutinefunction(coro)
+    assert inspect.iscoroutinefunction(coro)
 
     check_lru(coro, hits=0, misses=0, cache=0, tasks=0)
 
@@ -41,7 +42,7 @@ async def test_alru_cache_deco_called(check_lru: Callable[..., None]) -> None:
     async def coro() -> None:
         pass
 
-    assert asyncio.iscoroutinefunction(coro)
+    assert inspect.iscoroutinefunction(coro)
 
     check_lru(coro, hits=0, misses=0, cache=0, tasks=0)
 
@@ -56,7 +57,7 @@ async def coro() -> None:
 
     coro_wrapped = alru_cache(coro)
 
-    assert asyncio.iscoroutinefunction(coro_wrapped)
+    assert inspect.iscoroutinefunction(coro_wrapped)
 
     check_lru(coro_wrapped, hits=0, misses=0, cache=0, tasks=0)