--- a/tests/test-simplemerge.py	Fri Jan 07 14:40:21 2022 +0100
+++ b/tests/test-simplemerge.py	Thu Jan 06 09:03:17 2022 -0800
@@ -285,7 +285,7 @@
             list(m3.merge_groups()),
             [
                 (b'unchanged', [b'aaa\n']),
-                (b'conflict', [], [b'111\n'], [b'222\n']),
+                (b'conflict', ([], [b'111\n'], [b'222\n'])),
                 (b'unchanged', [b'bbb\n']),
             ],
         )