diff --git a/tests/test_config.py b/tests/test_config.py
index 7cdf61c9d..8644824ab 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -190,9 +190,12 @@ def _write_journal_config(journal_path, config):
         ({"setup": {"completed_at": 1}}, True),
         ({"setup": {"completed_at": 1.5}}, True),
         ({"setup": {"completed_at": 0}}, False),
+        ({"setup": {"completed_at": -1}}, False),
         ({"setup": {"completed_at": None}}, False),
         ({"setup": {"completed_at": True}}, False),
         ({"setup": {"completed_at": False}}, False),
+        ({"setup": {"completed_at": {}}}, False),
+        ({"setup": {"completed_at": []}}, False),
         ({}, False),
         ({"setup": {"completed_at": "foo"}}, False),
         ({"identity": {"name": "Active User"}}, False),