Add integration test for user deletion with trophy data per maintainer feedback

Implement Roland'\''s suggestion: create workout session records (logs), invoke trophy services, verify model delete succeeds without IntegrityError.
Added logger statements.
No mock in test_services.py needed to remove.

Author: infektyd

wger/core/tests/test_delete_user.py

@@ -21,6 +21,11 @@
 
 # wger
 from wger.core.tests.base_testcase import WgerTestCase
+from django.utils import timezone
+from wger.trophies.services.trophy import TrophyService
+from wger.trophies.services.statistics import UserStatisticsService
+from wger.trophies.models import Trophy, UserStatistics, UserTrophy
+from wger.manager.models import WorkoutSession
 
 
 logger = logging.getLogger(__name__)
@@ -196,3 +201,40 @@ def test_delete_user_anonymous(self):
         Tests deleting the user account as an anonymous user
         """
         self.delete_user(fail=True)
+class UserDeleteTrophyIntegrationTestCase(WgerTestCase):
+    """
+    Tests user deletion with trophy records and service invocation
+    """
+    def test_delete_user_with_trophy_records(self):
+        """
+        Adds sessions/records, calls trophy system, ensures delete works without IntegrityError
+        """
+        logger.info("Testing user deletion after trophy system invocation")
+        user = User.objects.create_user(
+            username="trophyuser",
+            email="trophy@test.com",
+            password="testpass"
+        )
+        session = WorkoutSession.objects.create(
+            user=user,
+            date=timezone.now().date()
+        )
+        logger.info("Created WorkoutSession")
+        trophy = Trophy.objects.create(
+            name="DeleteTestTrophy",
+            trophy_type=0,
+            checker_class="workout_count_based",
+            checker_params={"count": 1},
+            is_active=True
+        )
+        stats = UserStatistics.objects.create(
+            user=user,
+            total_workouts=1
+        )
+        logger.info("Created Trophy and UserStatistics")
+        UserStatisticsService.update_statistics(user)
+        TrophyService.evaluate_all_trophies(user)
+        logger.info("Trophy services invoked")
+        user.delete()
+        logger.info("User deleted")
+        self.assertEqual(User.objects.filter(username="trophyuser").count(), 0)