migrate site id to varchar instead of int

backend/apps/operations/tests.py

@@ -7,6 +7,25 @@ from rest_framework.test import APIClient
 from apps.accounts.models import User
 from apps.farms.models import Cycle, Flock, Kandang, Site
 from apps.operations.models import ChickenWeight, FeedSacks, IotPanel
+from apps.sync.models import ActiveSite
+
+
+def _linked_site(user: User, *, site_name: str = "Sukawarna", code: str = "sukawarna") -> Site:
+    """GM-visible site linked to an ActiveSite (Pengaturan registry)."""
+    site_id = f"{code}-0001"
+    active = ActiveSite.objects.create(
+        code=code,
+        name=site_name,
+        source_site_id=site_id,
+        api_base_url=f"https://{code}.example/api/v1",
+        managed_by=user,
+    )
+    return Site.objects.create(
+        site_id=site_id,
+        site_name=site_name,
+        user=user,
+        active_site=active,
+    )
 
 
 @override_settings(DASHBOARD_PUBLISH_HOUR=0)
@@ -15,7 +34,7 @@ class OperationsAPITests(TestCase):
         self.user = User.objects.create_user(user_name="tester", password="secret")
         self.client = APIClient()
         self.client.force_authenticate(self.user)
-        site = Site.objects.create(site_name="Sukawarna", user=self.user)
+        site = _linked_site(self.user)
         self.kandang = Kandang.objects.create(kandang_name="Kandang 1", site=site)
         self.cycle = Cycle.objects.create(
             kandang=self.kandang,
@@ -314,7 +333,7 @@ class DashboardVisibilityTests(TestCase):
         self.user = User.objects.create_user(user_name="tester", password="secret")
         self.client = APIClient()
         self.client.force_authenticate(self.user)
-        site = Site.objects.create(site_name="Sukawarna", user=self.user)
+        site = _linked_site(self.user)
         self.kandang = Kandang.objects.create(kandang_name="Kandang 1", site=site)
         self.cycle = Cycle.objects.create(
             kandang=self.kandang,