Use context date as default pattern

issue11359
review417411003
(grafted from 3ca1623dd74c4c1a9aff760d2b43d5dabf82a1ee)

--HG--
branch : 6.0

product.py

@@ -3,6 +3,7 @@
 from trytond.model import ModelView, fields
 from trytond.pool import PoolMeta, Pool
 from trytond.pyson import Eval, If
+from trytond.transaction import Transaction
 
 
 class PriceList(metaclass=PoolMeta):
@@ -21,6 +22,14 @@ class PriceList(metaclass=PoolMeta):
     def open_lines(cls, price_lists):
         pass
 
+    def compute(
+            self, party, product, unit_price, quantity, uom, pattern=None):
+        context = Transaction().context
+        pattern = pattern.copy() if pattern is not None else {}
+        pattern.setdefault('date', context.get('date'))
+        return super().compute(
+            party, product, unit_price, quantity, uom, pattern=pattern)
+
 
 class PriceListLine(metaclass=PoolMeta):
     __name__ = 'product.price_list.line'

tests/test_product_price_list_dates.py

@@ -11,6 +11,7 @@ from trytond.tests.test_tryton import suite as test_suite
 
 from trytond.modules.company.tests import (
     create_company, set_company, CompanyTestMixin)
+from trytond.transaction import Transaction
 
 
 class ProductPriceListDatesTestCase(CompanyTestMixin, ModuleTestCase):
@@ -75,6 +76,26 @@ class ProductPriceListDatesTestCase(CompanyTestMixin, ModuleTestCase):
                 None, None, Decimal(10), 1, None, pattern={'date': yesterday}),
             Decimal(9))
 
+    @with_transaction()
+    def test_price_list_with_context_date(self):
+        "Test price list with context date"
+        pool = Pool()
+        Date = pool.get('ir.date')
+
+        today = Date.today()
+        tomorrow = today + datetime.timedelta(days=1)
+
+        price_list = self.create_price_list('start_date', tomorrow)
+
+        with Transaction().set_context(date=today):
+            self.assertEqual(
+                price_list.compute(None, None, Decimal(10), 1, None),
+                Decimal(10))
+        with Transaction().set_context(date=tomorrow):
+            self.assertEqual(
+                price_list.compute(None, None, Decimal(10), 1, None),
+                Decimal(9))
+
 
 def suite():
     suite = test_suite()