Introduced groups and added all related endpoints

tests/routers/test_priorities.py

@@ -1,3 +1,6 @@
+import uuid
+from datetime import datetime, timezone
+
 import pytest
 from fastapi import status
 from sqlalchemy.orm import Session
@@ -11,7 +14,7 @@ from tests.utils.auth_test_fixtures import (
     db_session,
     non_admin_user_client,
 )
-from tests.utils.db_mocks import MockChannelDB, MockChannelURL, MockPriority
+from tests.utils.db_mocks import MockChannelDB, MockChannelURL, MockGroup, MockPriority
 
 # --- Test Cases For Priority Creation ---
 
@@ -147,7 +150,15 @@ def test_delete_priority_not_found(db_session: Session, admin_user_client):
 def test_delete_priority_in_use(db_session: Session, admin_user_client):
     # Create a priority and a channel URL using it
     priority = MockPriority(id=100, description="In Use")
-    db_session.add(priority)
+    group_id = uuid.uuid4()
+    test_group = MockGroup(
+        id=group_id,
+        name="Group With Channels",
+        sort_order=1,
+        created_at=datetime.now(timezone.utc),
+        updated_at=datetime.now(timezone.utc),
+    )
+    db_session.add_all([priority, test_group])
     db_session.commit()
 
     # Create a channel first
@@ -156,7 +167,7 @@ def test_delete_priority_in_use(db_session: Session, admin_user_client):
         tvg_id="test.tv",
         tvg_name="Test",
         tvg_logo="test.png",
-        group_title="Test Group",
+        group_id=group_id,
     )
     db_session.add(channel)
     db_session.commit()