test: reproduce routine scheduling and prescription loss

wger/manager/tests/test_generated_prescription_constraints.py

@@ -0,0 +1,72 @@
+# This file is part of wger Workout Manager.
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+# Standard Library
+import datetime
+from decimal import Decimal
+
+# Django
+from django.test import SimpleTestCase
+
+# wger
+from wger.core.tests.base_testcase import WgerTestCase
+from wger.manager.api.serializers import SetConfigDataSerializer
+from wger.manager.dataclasses import SetConfigData
+from wger.manager.models import (
+    Day,
+    MaxRiRConfig,
+    RiRConfig,
+    Routine,
+    Slot,
+    SlotEntry,
+)
+
+
+class GeneratedPrescriptionTextConstraintsTestCase(SimpleTestCase):
+    def test_text_preserves_set_range_starting_at_one(self):
+        prescription = SetConfigData(
+            exercise=1,
+            sets=1,
+            max_sets=3,
+            repetitions=8,
+            repetitions_unit=1,
+        )
+
+        self.assertEqual(prescription.text_repr, '1-3 Sets, 8 Reps')
+
+    def test_text_preserves_explicit_zero_rir(self):
+        prescription = SetConfigData(
+            exercise=1,
+            repetitions=8,
+            repetitions_unit=1,
+            rir=Decimal('0'),
+        )
+
+        self.assertEqual(prescription.text_repr, '8 Reps @ 0 RiR')
+
+
+class GeneratedRoutineConstraintsTestCase(WgerTestCase):
+    def test_weekly_cycle_wrapping_on_monday_does_not_skip_a_week(self):
+        routine = Routine.objects.create(
+            user_id=1,
+            name='Friday start',
+            start=datetime.date(2026, 10, 30),
+            end=datetime.date(2026, 11, 8),
+            fit_in_week=True,
+        )
+        days = [Day.objects.create(routine=routine, order=i, name=f'Day {i}') for i in range(1, 4)]
+
+        self.assertEqual(routine.data_for_day(datetime.date(2026, 11, 1)).day, days[2])
+        self.assertEqual(routine.data_for_day(datetime.date(2026, 11, 2)).day, days[0])
+
+    def test_generated_json_preserves_rir_range_starting_at_zero(self):
+        slot = Slot.objects.create(day_id=1, order=100)
+        entry = SlotEntry.objects.create(slot=slot, exercise_id=1)
+        RiRConfig.objects.create(slot_entry=entry, iteration=1, value=0)
+        MaxRiRConfig.objects.create(slot_entry=entry, iteration=1, value=2)
+
+        data = SetConfigDataSerializer(entry.get_config_data(1)).data
+
+        self.assertEqual(Decimal(data['rir']), Decimal('0'))
+        self.assertIsNotNone(data['max_rir'], 'The stored upper RiR target was lost')
+        self.assertEqual(Decimal(data['max_rir']), Decimal('2'))