[ADD] sale_coupon: introduce coupon mechanism on sales order

Introduces 2 new concepts:

Promotion programs:
===================

Using promotion programs allows you to propose to your customers:
- Promotional offers limited in time or a limited order number.
- Public code printed in advertisements, magasines, etc.
- Specific offers based on a customers group or a product set.
- A combination of the preceeding points.

You may choose to apply the program reward immediately on the sales order or to propose the reward for a next order. In the second case a coupon will be generated at the order confirmation for the customer to use it later.

Coupon programs:
================

Using coupon programs allows you to propose to your customers:
- Free products or discounts if some conditions on products or purchased amount are met.
- Promotional offers limited in time.
- Generate coupons for a customers group.
- Specific offers based on a customers group or a product set.
- A combination of the preceeding points.

A coupon is applied by entering a valid code if the program rules are met and if the reward is already in the order lines.

1 files changed, 54 insertions, 0 deletions

diff --git a/tests/test_program_without_code_operations.py b/tests/test_program_without_code_operations.py
new file mode 100644
index 00000000000..32f2edf6a93
--- /dev/null
+++ b/tests/test_program_without_code_operations.py
@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from openerp.addons.sale_coupon.tests.common import TestSaleCouponCommon
+
+
+class TestProgramWithoutCodeOperations(TestSaleCouponCommon):
+    # Test some basic operation (create, write, unlink) on an immediate coupon program on which we should
+    # apply or remove the reward automatically, as there's no program code.
+
+    def test_immediate_program_basic_operation(self):
+
+        # 2 products A are needed
+        self.immediate_promotion_program.write({'rule_min_quantity': 2.0})
+        order = self.empty_order
+        # Test case 1 (1 A): Assert that no reward is given, as the product B is missing
+        order.write({'order_line': [
+            (0, False, {
+                'product_id': self.product_A.id,
+                'name': '1 Product A',
+                'product_uom': self.uom_unit.id,
+                'product_uom_qty': 1.0,
+            })
+        ]})
+        self.assertEqual(len(order.order_line.ids), 1, "The promo offer shouldn't have been applied as the product B isn't in the order")
+
+        # Test case 2 (1 A 1 B): Assert that no reward is given, as the product B is not present in the correct quantity
+        order.write({'order_line': [
+            (0, False, {
+                'product_id': self.product_B.id,
+                'name': '2 Product B',
+                'product_uom': self.uom_unit.id,
+                'product_uom_qty': 1.0,
+            })
+        ]})
+        self.assertEqual(len(order.order_line.ids), 2, "The promo offer shouldn't have been applied as 2 product A aren't in the order")
+
+        # Test case 3 (2 A 1 B): Assert that the reward is given as the product B is now in the order
+        order.write({'order_line': [(1, order.order_line[0].id, {'product_uom_qty': 2.0})]})
+        self.assertEqual(len(order.order_line.ids), 3, "The promo offert should have been applied, the discount is not created")
+
+        # Test case 4 (1 A 1 B): Assert that the reward is removed as we don't buy 2 products B anymore
+        order.write({'order_line': [(1, order.order_line[0].id, {'product_uom_qty': 1.0})]})
+        self.assertEqual(len(order.order_line.ids), 2, "The promo reward should have been removed as the rules are not matched anymore")
+        self.assertEqual(order.order_line[0].product_id.id, self.product_A.id, "The wrong line has been removed")
+        self.assertEqual(order.order_line[1].product_id.id, self.product_B.id, "The wrong line has been removed")
+
+        # Test case 5 (1 B): Assert that the reward is removed when the order is modified and doesn't match the rules anymore
+        order.write({'order_line': [
+            (1, order.order_line[0].id, {'product_uom_qty': 2.0}),
+            (2, order.order_line[0].id, False)
+        ]})
+        self.assertEqual(len(order.order_line.ids), 1, "The promo reward should have been removed as the rules are not matched anymore")
+        self.assertEqual(order.order_line.product_id.id, self.product_B.id, "The wrong line has been removed")