From 967a36fdbed5fc68e307fefc385ab2b8509a91e2 Mon Sep 17 00:00:00 2001
From: Stephen Finucane <sfinucan@redhat.com>
Date: Mon, 1 Feb 2021 11:05:36 +0000
Subject: [PATCH] Drop use of deprecated collections classes

These were moved in Python 3.3 and the aliases will be removed in 3.10.

Change-Id: If31797f8fc758468d153c364700db47452edf3dd
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>
---
 oslo_serialization/tests/test_jsonutils.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/oslo_serialization/tests/test_jsonutils.py b/oslo_serialization/tests/test_jsonutils.py
index f076822..9c92235 100644
--- a/oslo_serialization/tests/test_jsonutils.py
+++ b/oslo_serialization/tests/test_jsonutils.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import collections
+import collections.abc
 import datetime
 import functools
 import io
@@ -241,9 +242,9 @@ def iteritems(self):
         self.assertEqual({'iteritems': 'iteritems'}, p)
 
     def test_mapping(self):
-        # Make sure collections.Mapping is converted to a dict
+        # Make sure collections.abc.Mapping is converted to a dict
         # and not a list.
-        class MappingClass(collections.Mapping):
+        class MappingClass(collections.abc.Mapping):
             def __init__(self):
                 self.data = dict(a=1, b=2, c=3)