[#3086] Ensure defaults for ContactFormSubject klant configs

    - We check in the ContactFormSubject form that both esuite_config
      and openklant_config are set. By default, the first instances
      of ESuiteKlantConfig and OpenKlant2Config are assigned.

src/open_inwoner/openklant/admin.py

@@ -22,6 +22,16 @@ def __init__(self, *args, **kwargs):
                 "Must be configured if E-suite is used"
             )
 
+        # set defaults for klant configs if they're missing
+        if not self._meta.model.esuite_config:
+            self._meta.model.esuite_config = (
+                self._meta.model.esuite_config.field.related_model.objects.first()
+            )
+        if not self._meta.model.openklant_config:
+            self._meta.model.openklant_config = (
+                self._meta.model.openklant_config.field.related_model.objects.first()
+            )
+
     class Meta:
         model = ContactFormSubject
         fields = (

src/open_inwoner/openklant/tests/test_migrations.py

@@ -26,9 +26,7 @@ def test_set_default_config(self):
         OpenKlant2Config = self.apps.get_model("openklant", "OpenKlant2Config")
 
         for contact_form_subject in ContactFormSubject.objects.all():
-            self.assertEqual(
-                contact_form_subject.esuite_config, self.esuite_config_1
-            )
+            self.assertEqual(contact_form_subject.esuite_config, self.esuite_config_1)
             self.assertEqual(
                 contact_form_subject.openklant_config, self.openklant_config_1
             )