Add Fixed type component

modules/purchase_trade/tests/test_module.py

@@ -80,6 +80,29 @@ class PurchaseTradeTestCase(ModuleTestCase):
             strategy.get_mtm(line, Decimal('10')),
             Decimal('250.00'))
 
+    @with_transaction()
+    def test_get_mtm_uses_fixed_pricing_component(self):
+        'get_mtm values fixed components like a constant price curve'
+        Strategy = Pool().get('mtm.strategy')
+        strategy = Strategy()
+        strategy.scenario = Mock(
+            valuation_date='2026-03-29',
+            use_last_price=True,
+        )
+        strategy.currency = Mock()
+        strategy.components = [Mock(
+            price_source_type='fixed',
+            price_index=None,
+            price_matrix=None,
+            get_price=Mock(return_value=Decimal('75')),
+            ratio=Decimal('100'),
+        )]
+        line = Mock(unit=Mock())
+
+        self.assertEqual(
+            strategy.get_mtm(line, Decimal('3')),
+            Decimal('225.00'))
+
     @with_transaction()
     def test_add_physical_lot_defaults_hidden_premium_and_chunk_key(self):
         'add physical lot works when hidden tree fields are not loaded'
@@ -182,6 +205,28 @@ class PurchaseTradeTestCase(ModuleTestCase):
             valuation_module.Valuation._get_strategy_mtm_price(strategy, line),
             Decimal('40.0000'))
 
+    def test_get_strategy_mtm_price_uses_fixed_pricing_component(self):
+        'strategy mtm price uses fixed components like constant price curves'
+        strategy = Mock(
+            scenario=Mock(
+                valuation_date='2026-03-29',
+                use_last_price=True,
+            ),
+            currency=Mock(),
+        )
+        strategy.components = [Mock(
+            price_source_type='fixed',
+            price_index=None,
+            price_matrix=None,
+            get_price=Mock(return_value=Decimal('75')),
+            ratio=Decimal('50'),
+        )]
+        line = Mock(unit=Mock())
+
+        self.assertEqual(
+            valuation_module.Valuation._get_strategy_mtm_price(strategy, line),
+            Decimal('37.5000'))
+
     def test_sale_line_is_unmatched_checks_lot_links(self):
         'sale line unmatched helper ignores empty matches and detects linked purchases'
         sale_line = Mock()
@@ -1941,6 +1986,39 @@ class PurchaseTradeTestCase(ModuleTestCase):
 
         self.assertEqual(component.get_calendar(), calendar)
 
+    def test_pricing_component_fixed_returns_flat_price(self):
+        'fixed pricing returns the component flat price'
+        Component = Pool().get('pricing.component')
+        component = Component()
+        component.price_source_type = 'fixed'
+        component.fixed_price = Decimal('125.25')
+        currency = Mock(id=1)
+        component.fixed_currency = currency
+
+        self.assertEqual(
+            component.get_price(
+                datetime.date(2026, 4, 1), Mock(), currency, False),
+            Decimal('125.2500'))
+
+    def test_pricing_component_fixed_converts_currency(self):
+        'fixed pricing converts from component currency to requested currency'
+        Component = Pool().get('pricing.component')
+        component = Component()
+        component.price_source_type = 'fixed'
+        component.fixed_price = Decimal('100')
+        component.fixed_currency = Mock(id=1)
+        target_currency = Mock(id=2)
+        currency_model = Mock(
+            _get_rate=Mock(return_value={
+                component.fixed_currency.id: Decimal('1.2')}))
+
+        with patch('trytond.modules.purchase_trade.pricing.Pool') as PricingPool:
+            PricingPool.return_value.get.return_value = currency_model
+            price = component.get_price(
+                datetime.date(2026, 4, 1), Mock(), target_currency, False)
+
+        self.assertEqual(price, Decimal('120.0000'))
+
     def test_sale_and_purchase_trader_operator_domains_use_explicit_categories(self):
         'sale and purchase trader/operator fields are filtered by TRADER/OPERATOR categories'
         Sale = Pool().get('sale.sale')