[FIX]sale_commission_product_criteria_domain: consider multiple agents

sale_commission_product_criteria_domain/tests/test_sale_commission_product_criteria_domain.py

@@ -92,8 +92,14 @@ def test_commission_domain_demo_cases(self):
         invoice.recompute_lines_agents()
         so.order_line.agent_ids._compute_amount()
         invoice.line_ids.agent_ids._compute_amount()
-        self.assertEqual(so.order_line.agent_ids.fixed_amount, 20)
-        self.assertEqual(invoice.line_ids.agent_ids.amount, 20)
+
+        so_fixed_amounts = so.order_line.agent_ids.mapped("fixed_amount")
+        self.assertEqual(len(so_fixed_amounts), 1)
+        self.assertEqual(so_fixed_amounts[0], 20)
+
+        inv_amounts = invoice.line_ids.agent_ids.mapped("amount")
+        self.assertEqual(len(inv_amounts), 1)
+        self.assertEqual(inv_amounts[0], 20)
 
         # Azure Spain Customizable Desk (CONFIG) - Product Template
         so = self._create_sale_order(
@@ -105,8 +111,14 @@ def test_commission_domain_demo_cases(self):
         invoice.recompute_lines_agents()
         so.order_line.agent_ids._compute_amount()
         invoice.line_ids.agent_ids._compute_amount()
-        self.assertEqual(so.order_line.agent_ids.percent_amount, 5)
-        self.assertEqual(invoice.line_ids.agent_ids.amount, 50)
+
+        so_percent_amounts = so.order_line.agent_ids.mapped("percent_amount")
+        self.assertEqual(len(so_percent_amounts), 1)
+        self.assertEqual(so_percent_amounts[0], 5)
+
+        inv_amounts = invoice.line_ids.agent_ids.mapped("amount")
+        self.assertEqual(len(inv_amounts), 1)
+        self.assertEqual(inv_amounts[0], 50)
 
         # Azure Spain Variant: Customizable Desk (CONFIG) (Steel, White) - Variant
         so = self._create_sale_order(self.product_4, self.azure)
@@ -190,8 +202,14 @@ def test_commission_domain(self):
         invoice.recompute_lines_agents()
         so.order_line.agent_ids._compute_amount()
         invoice.line_ids.agent_ids._compute_amount()
-        self.assertEqual(so.order_line.agent_ids.amount, 150)
-        self.assertEqual(invoice.line_ids.agent_ids.amount, 150)
+
+        so_amounts = so.order_line.agent_ids.mapped("amount")
+        self.assertEqual(len(so_amounts), 1)
+        self.assertEqual(so_amounts[0], 150)
+
+        inv_amounts = invoice.line_ids.agent_ids.mapped("amount")
+        self.assertEqual(len(inv_amounts), 1)
+        self.assertEqual(inv_amounts[0], 150)
 
         #
         tst_partner = so.partner_id.copy({})