demurrage

modules/purchase_trade/tests/test_module.py

@@ -270,6 +270,52 @@ class PurchaseTradeTestCase(ModuleTestCase):
             sof._applied_laytime_end(),
             datetime.datetime(2026, 6, 1, 12, 0))
 
+    @with_transaction()
+    def test_sof_calculation_info_explains_structured_inputs(self):
+        'sof calculation info displays the structured calculation inputs'
+        Sof = Pool().get('sof.statement')
+        sof = Sof()
+        sof.applied_condition = Mock(
+            rec_name='Discharge',
+            name='Discharge',
+            party_role='owner',
+            responsibility='ours',
+            laytime_allowed=Decimal('72'),
+            laytime_unit='hours',
+            laytime_start_event='notice_of_readiness',
+            laytime_start_offset=Decimal('6'),
+            laytime_start_offset_unit='hours',
+            laytime_end_event='hoses_disconnected',
+            laytime_start='Arrival + 1 day',
+            laytime_end='End pumping',
+            rates=[
+                Mock(rate=Decimal('24000'), rate_type=Mock(category='demurrage')),
+                Mock(rate=Decimal('12000'), rate_type=Mock(category='despatch')),
+            ])
+        sof.notice_of_readiness_time = datetime.datetime(2026, 6, 1, 2, 0)
+        sof.hoses_disconnected = datetime.datetime(2026, 6, 4, 10, 0)
+        sof.laytime_balance = -Decimal('12')
+
+        self.assertEqual(
+            sof.get_calculation_info('calculation_condition'), 'Discharge')
+        self.assertEqual(
+            sof.get_calculation_info('calculation_start_event'),
+            'Notice of Readiness')
+        self.assertEqual(
+            sof.get_calculation_info('calculation_start_event_time'),
+            '01/06/2026 02:00')
+        self.assertEqual(
+            sof.get_calculation_info('calculation_start_offset'), '6 hours')
+        self.assertEqual(
+            sof.get_calculation_info('calculation_end_event'),
+            'Hoses Disconnected')
+        self.assertEqual(
+            sof.get_calculation_info('calculation_end_event_time'),
+            '04/06/2026 10:00')
+        self.assertEqual(
+            sof.get_calculation_info('calculation_rate_used'),
+            'Demurrage: 24000 / day')
+
     @with_transaction()
     def test_sof_header_date_time_values_sync_to_datetime(self):
         'sof header date and time fields build the technical datetime value'