From 94c2560a1e4407258c59cb137d11bc2724611eaa Mon Sep 17 00:00:00 2001
From: Tin Tvrtkovic <tinchester@gmail.com>
Date: Tue, 20 Apr 2021 01:04:59 +0200
Subject: [PATCH] More robust loop replacement

---
 pytest_asyncio/plugin.py | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/pytest_asyncio/plugin.py b/pytest_asyncio/plugin.py
index 80cce291..7665ff4d 100644
--- a/pytest_asyncio/plugin.py
+++ b/pytest_asyncio/plugin.py
@@ -91,9 +91,13 @@ def pytest_fixture_setup(fixturedef, request):
         outcome = yield
         loop = outcome.get_result()
         policy = asyncio.get_event_loop_policy()
-        old_loop = policy.get_event_loop()
-        if old_loop is not loop:
-            old_loop.close()
+        try:
+            old_loop = policy.get_event_loop()
+            if old_loop is not loop:
+                old_loop.close()
+        except RuntimeError:
+            # Swallow this, since it's probably bad event loop hygiene.
+            pass
         policy.set_event_loop(loop)
         return