diff --git a/stages/test/test_groups.py b/stages/test/test_groups.py
new file mode 100644
index 00000000..a3940a3f
--- /dev/null
+++ b/stages/test/test_groups.py
@@ -0,0 +1,31 @@
+#!/usr/bin/python3
+
+import pytest
+
+from osbuild.testutil import assert_jsonschema_error_contains
+
+STAGE_NAME = "org.osbuild.groups"
+
+
+@pytest.mark.parametrize("test_data,expected_err", [
+    # bad
+    ({"groups": {"!invalid-name": {}}}, "'!invalid-name' does not match any of the regex"),
+    ({"groups": {"foo": {"gid": "x"}}}, "'x' is not of type 'number'"),
+    # good
+    ({}, ""),
+    ({"groups": {"foo": {}}}, ""),
+    ({"groups": {"foo": {"gid": 999}}}, ""),
+])
+def test_schema_validation(stage_schema, test_data, expected_err):
+    test_input = {
+        "type": STAGE_NAME,
+        "options": {},
+    }
+    test_input["options"].update(test_data)
+    res = stage_schema.validate(test_input)
+
+    if expected_err == "":
+        assert res.valid is True, f"err: {[e.as_dict() for e in res.errors]}"
+    else:
+        assert res.valid is False
+        assert_jsonschema_error_contains(res, expected_err, expected_num_errs=1)