Lot invoicing + Fee padding

modules/purchase_trade/tests/test_module.py

@@ -3402,6 +3402,25 @@ class PurchaseTradeTestCase(ModuleTestCase):
         self.assertEqual(fee_line.fee_quantity, Decimal('5'))
         self.assertEqual(fee_line.fee_amount, Decimal('10.00'))
 
+    def test_lot_invoice_default_final_fee_display_ignores_padding(self):
+        'initial final fee display reads amount without padding'
+        class FeeStub:
+            state = 'invoiced'
+            add_padding = True
+
+            @property
+            def amount(self):
+                if Transaction().context.get(
+                        '_purchase_trade_ignore_fee_padding'):
+                    return Decimal('14970')
+                return Decimal('14985')
+
+        fee = FeeStub()
+
+        self.assertEqual(
+            lot_module.LotInvoice._fee_display_amount(fee, 'final'),
+            Decimal('14970'))
+
     def test_fee_get_non_cog_returns_zero_without_move_lines(self):
         'fee non-cog amount is zero before any accounting move line exists'
         fee = fee_module.Fee()