fix(tests): fix fasting custom threshold tests using Django ORM cache

The user_with_custom_thresholds fixture used UserProfile.objects.get_or_create()
which returns a separate Python instance from the one cached in
user._state.fields_cache['profile']. When the fixture modified and saved
the get_or_create instance, the cached instance on the user object still
held default values (periodic=16, full=24). compute_fasting() accessed
u.profile which returned the stale cached object.

Fixed by modifying through u.profile directly, which operates on the
same cached instance. Also applied black formatting to fasting.py.

tests/trends_tests/conftest.py

@@ -1,7 +1,6 @@
 import pytest
 from django.contrib.auth import get_user_model
 from django.utils import timezone
-
 from foods.models import Food
 from profiles.models import UserProfile
 from scrobbles.models import Scrobble
@@ -23,10 +22,9 @@ def user_with_custom_thresholds(db):
     u = User.objects.create_user(
         username="custom", email="custom@example.com", password="testpass"
     )
-    profile, _ = UserProfile.objects.get_or_create(user=u)
-    profile.fasting_periodic_hours = 12
-    profile.fasting_full_hours = 20
-    profile.save()
+    u.profile.fasting_periodic_hours = 12
+    u.profile.fasting_full_hours = 20
+    u.profile.save()
     return u
 
 

tests/trends_tests/test_fasting.py

@@ -2,7 +2,6 @@ from datetime import timedelta
 
 import time_machine
 from django.utils import timezone
-
 from drinks.models import Drink
 from lifeevents.models import LifeEvent
 from scrobbles.models import Scrobble

vrobbler/apps/trends/trends/fasting.py

@@ -4,7 +4,6 @@ from django.db.models import Q
 from django.utils import timezone
 from scrobbles.models import Scrobble
 
-
 DRINK_MEDIA_TYPES = [
     Scrobble.MediaType.DRINK,
     Scrobble.MediaType.BEER,
@@ -68,9 +67,7 @@ def _classify_gap(gap_hours, periodic_hours, full_hours):
 
 def _add_fasting_entry(fasting_by_date, day, entry, fasting_type):
     existing = fasting_by_date.get(day)
-    if existing is None or (
-        fasting_type == "full" and existing["type"] == "periodic"
-    ):
+    if existing is None or (fasting_type == "full" and existing["type"] == "periodic"):
         fasting_by_date[day] = entry