bug template

modules/purchase_trade/tests/test_module.py

@@ -1183,6 +1183,63 @@ class PurchaseTradeTestCase(ModuleTestCase):
         self.assertEqual(invoice.report_net, Decimal('800'))
         self.assertEqual(invoice.report_gross, Decimal('820'))
 
+    def test_invoice_report_uses_line_quantities_when_same_lot_is_invoiced_twice(self):
+        'invoice final note keeps line differences when two lines share the same lot'
+        Invoice = Pool().get('account.invoice')
+
+        mt = Mock(id=1, rec_name='MT')
+        kg = Mock(id=2, rec_name='KILOGRAM')
+        shared_lot = Mock(id=10, lot_type='physic', lot_unit_line=kg)
+        shared_lot.get_hist_quantity.return_value = (
+            Decimal('999995'),
+            Decimal('999995'),
+        )
+
+        negative = Mock(
+            type='line',
+            quantity=Decimal('-999.995'),
+            unit=mt,
+            lot=shared_lot,
+        )
+        positive = Mock(
+            type='line',
+            quantity=Decimal('999.990'),
+            unit=mt,
+            lot=shared_lot,
+        )
+
+        invoice = Invoice()
+        negative.invoice = invoice
+        positive.invoice = invoice
+        invoice.lines = [negative, positive]
+
+        uom_model = Mock()
+        uom_model.search.return_value = [Mock(id=3, rec_name='LBS', symbol='LBS')]
+        uom_model.compute_qty.side_effect = (
+            lambda from_unit, qty, to_unit: (
+                qty * 1000
+                if getattr(from_unit, 'rec_name', None) == 'MT'
+                and getattr(to_unit, 'rec_name', None) == 'KILOGRAM'
+                else (
+                    qty * 2.20462
+                    if getattr(from_unit, 'rec_name', None) == 'KILOGRAM'
+                    and getattr(to_unit, 'rec_name', None) == 'LBS'
+                    else qty
+                )
+            )
+        )
+
+        with patch('trytond.modules.purchase_trade.invoice.Pool') as PoolMock:
+            PoolMock.return_value.get.return_value = uom_model
+
+            self.assertEqual(invoice.report_net, Decimal('-5.000'))
+            self.assertEqual(
+                invoice.report_quantity_lines.splitlines(),
+                [
+                    '-999995.0 KILOGRAM (-2204608.98 LBS)',
+                    '999990.0 KILOGRAM (2204597.95 LBS)',
+                ])
+
     def test_invoice_report_weights_use_single_virtual_lot_when_no_physical(self):
         'invoice uses the unique virtual lot hist when no physical lot exists'
         Invoice = Pool().get('account.invoice')