diff --git a/src/openforms/registrations/contrib/json/tests/test_config_checks.py b/src/openforms/registrations/contrib/json/tests/test_config_checks.py
new file mode 100644
index 0000000000..9a6547ea9b
--- /dev/null
+++ b/src/openforms/registrations/contrib/json/tests/test_config_checks.py
@@ -0,0 +1,38 @@
+from unittest.mock import patch
+
+from django.test import TestCase
+
+from zgw_consumers.test.factories import ServiceFactory
+
+from openforms.plugins.exceptions import InvalidPluginConfiguration
+
+from ..models import JSONConfig
+from ..plugin import JSONRegistration
+
+
+class ConfigCheckTests(TestCase):
+
+    @patch("zgw_consumers.nlx.NLXClient.get")
+    def test_config_check(self, mock_post):
+        json_plugin = JSONRegistration("json_registration_plugin")
+
+        config = JSONConfig(
+            service=ServiceFactory(api_root="https://example.com/", api_connection_check_path="test")
+        )
+
+        with patch(
+            "openforms.registrations.contrib.json.plugin.JSONConfig.get_solo",
+            return_value=config
+        ):
+            json_plugin.check_config()
+            mock_post.assert_called_once_with("test")
+
+    def test_no_service_configured(self):
+        config = JSONConfig(service=None)
+        json_plugin = JSONRegistration("json_registration_plugin")
+
+        with patch(
+            "openforms.registrations.contrib.json.plugin.JSONConfig.get_solo",
+            return_value=config
+        ):
+            self.assertRaises(InvalidPluginConfiguration, json_plugin.check_config)