ProductSupplier is linked to template not product

tests/test_stock_supply_day.py

@@ -150,7 +150,7 @@ class StockSupplyDayTestCase(unittest.TestCase):
                     'account_payable': payable.id,
                     }])
         product_supplier, = self.product_supplier.create([{
-                    'product': product.id,
+                    'product': template.id,
                     'company': company.id,
                     'party': supplier.id,
                     'delivery_time': delivery_time,