diff --git a/pkgs/clan-cli/tests/test_config.py b/pkgs/clan-cli/tests/test_config.py
new file mode 100644
index 00000000..345a3fa2
--- /dev/null
+++ b/pkgs/clan-cli/tests/test_config.py
@@ -0,0 +1,36 @@
+import json
+from pathlib import Path
+from typing import Any
+
+import pytest
+
+from clan_cli import config
+
+base_args = [
+    "",
+    f"{Path(config.__file__).parent}/jsonschema/example-schema.json",
+]
+
+
+# use pytest.parametrize
+@pytest.mark.parametrize(
+    "args,expected",
+    [
+        (["name", "DavHau"], {"name": "DavHau"}),
+        (
+            ["kernelModules", "foo", "bar", "baz"],
+            {"kernelModules": ["foo", "bar", "baz"]},
+        ),
+        (["services.opt", "test"], {"services": {"opt": "test"}}),
+        (["userIds.DavHau", "42"], {"userIds": {"DavHau": 42}}),
+    ],
+)
+def test_set_some_option(
+    args: list[str],
+    expected: dict[str, Any],
+    capsys: pytest.CaptureFixture,
+) -> None:
+    config.main(base_args + args)
+    captured = capsys.readout()
+    json_out = json.loads(captured.out)
+    assert json_out == expected