Premium composition

modules/purchase_trade/tests/test_module.py

@@ -1907,6 +1907,13 @@ class PurchaseTradeTestCase(ModuleTestCase):
         self.assertEqual(trigger.from_a, datetime.date(2026, 4, 1))
         self.assertEqual(trigger.to_a, datetime.date(2026, 4, 30))
 
+    def test_pricing_trigger_average_defaults_to_true_and_last_label_is_latest(self):
+        'pricing trigger defaults to Avg and labels last as Latest'
+        Trigger = Pool().get('pricing.trigger')
+
+        self.assertTrue(Trigger.default_average())
+        self.assertEqual(Trigger.last.string, 'Latest')
+
     def test_pricing_component_matrix_returns_generic_line_price(self):
         'matrix pricing can use an unconditional matrix line as a component price'
         Component = Pool().get('pricing.component')
@@ -2041,6 +2048,37 @@ class PurchaseTradeTestCase(ModuleTestCase):
         self.assertEqual(Sale.default_tolerance_option(), '')
         self.assertEqual(Purchase.default_tolerance_option(), '')
 
+    def test_purchase_line_premium_sums_decomposition_base_amounts(self):
+        'purchase line premium is the sum of premium decomposition base amounts'
+        Line = Pool().get('purchase.line')
+        line = Line()
+        line.premium_decomposition = [
+            Mock(base_amount=Decimal('12.50')),
+            Mock(base_amount=Decimal('-2.25')),
+        ]
+
+        self.assertEqual(line.get_premium('premium'), Decimal('10.2500'))
+
+    def test_premium_composition_base_amount_converts_on_contract_date(self):
+        'premium composition base amount converts to contract currency at spot date'
+        Premium = Pool().get('premium.composition')
+        premium = Premium()
+        source_currency = Mock(id=1)
+        target_currency = Mock(id=2)
+        premium.premium = Decimal('100')
+        premium.currency = source_currency
+        premium.line = Mock(purchase=Mock(
+            currency=target_currency,
+            purchase_date=datetime.date(2026, 5, 1)))
+        currency_model = Mock(
+            compute=Mock(return_value=Decimal('120')))
+
+        with patch('trytond.modules.purchase_trade.purchase.Pool') as PoolMock:
+            PoolMock.return_value.get.return_value = currency_model
+            amount = premium.get_base_amount('base_amount')
+
+        self.assertEqual(amount, Decimal('120.000000'))
+
     def test_fee_rule_matches_purchase_line_conditions(self):
         'fee rule matches purchase line conditions'
         party = Mock(id=1)