From 9cc743d0c82e019306d80eb8a83f86f8c6244610 Mon Sep 17 00:00:00 2001
From: Jon Dufresne <jon.dufresne@gmail.com>
Date: Thu, 6 Feb 2020 23:03:25 -0800
Subject: [PATCH] Closed caches in clear_cache_handlers() signal handler.

This also fixes ResourceWarnings about unclosed sockets emitted in
cache.tests.
---
 django/test/signals.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/django/test/signals.py b/django/test/signals.py
index 68e6ad3fb6..3503fc08e1 100644
--- a/django/test/signals.py
+++ b/django/test/signals.py
@@ -26,7 +26,8 @@ COMPLEX_OVERRIDE_SETTINGS = {'DATABASES'}
 @receiver(setting_changed)
 def clear_cache_handlers(**kwargs):
     if kwargs['setting'] == 'CACHES':
-        from django.core.cache import caches
+        from django.core.cache import caches, close_caches
+        close_caches()
         caches._caches = Local()