diff --git a/atest/unittest_utils.py b/atest/unittest_utils.py
index 9171c5d..a2f806f 100644
--- a/atest/unittest_utils.py
+++ b/atest/unittest_utils.py
@@ -27,6 +27,10 @@
     assertEqual considers types equal to their subtypes, but we want to
     not consider set() and frozenset() equal for testing.
     """
+    # Allow 2 lists with different order but the same content equal.
+    if isinstance(first, list) and isinstance(second, list):
+        first.sort()
+        second.sort()
     test_class.assertEqual(first, second)
     # allow byte and unicode string equality.
     if not (isinstance(first, str) and