[IMP] sale_coupon, website_sale_coupon: add tests

Commit a42c27f99e0061b7c4f recently fixed some bugs on sale_coupon.
This commit add some tests to be sure theses bugs are fixed and won't appear
again.

This closes #1744

tests/test_free_shipping_reward.py

@@ -5,6 +5,11 @@ from openerp.addons.sale_coupon.tests.common import TestSaleCouponCommon
 
 
 class TestSaleCouponProgramRules(TestSaleCouponCommon):
+
+    def setUp(self):
+        super(TestSaleCouponProgramRules, self).setUp()
+        self.iPadMini = self.env.ref('product.product_product_6').copy()
+
     # Test a free shipping reward + some expected behavior
     # (automatic line addition or removal)
 
@@ -17,6 +22,7 @@ class TestSaleCouponProgramRules(TestSaleCouponCommon):
             'promo_code_usage': 'no_code_needed',
             'reward_type': 'free_shipping',
             'rule_minimum_amount': 100.0,
+            'rule_minimum_amount_tax_inclusion': 'tax_included',
             'active': True,
         })
 
@@ -44,7 +50,6 @@ class TestSaleCouponProgramRules(TestSaleCouponCommon):
         # Test Case 1b: amount is not reached but is on a threshold
         # The amount of deliverable product + the one of the delivery exceeds the minimum amount
         # yet the program shouldn't be applied
-
         # Order price will be 5.75 + 81.74*1.15 = 99.75
         order.write({'order_line': [
             (0, False, {
@@ -55,7 +60,6 @@ class TestSaleCouponProgramRules(TestSaleCouponCommon):
                 'price_unit': 81.74,
             })
         ]})
-
         order.recompute_coupon_lines()
         self.assertEqual(len(order.order_line.ids), 3)
 
@@ -67,7 +71,7 @@ class TestSaleCouponProgramRules(TestSaleCouponCommon):
                 'name': 'Product 1',
                 'product_uom': self.uom_unit.id,
                 'product_uom_qty': 1.0,
-                'price_unit': 1000
+                'price_unit': 0.30,
             })
         ]})
 
@@ -80,3 +84,100 @@ class TestSaleCouponProgramRules(TestSaleCouponCommon):
         ]})
         order.recompute_coupon_lines()
         self.assertEqual(len(order.order_line.ids), 3)
+
+    def test_shipping_cost(self):
+        # Free delivery should not be taken into account when checking for minimum required threshold
+        p_minimum_threshold_free_delivery = self.env['sale.coupon.program'].create({
+            'name': 'free shipping if > 872 tax exl',
+            'promo_code_usage': 'no_code_needed',
+            'reward_type': 'free_shipping',
+            'program_type': 'promotion_program',
+            'rule_minimum_amount': 872,
+        })
+        p_minimum_threshold_discount = self.env['sale.coupon.program'].create({
+            'name': '10% reduction if > 872 tax exl',
+            'promo_code_usage': 'no_code_needed',
+            'reward_type': 'discount',
+            'program_type': 'promotion_program',
+            'discount_type': 'percentage',
+            'discount_percentage': 10.0,
+            'rule_minimum_amount': 872,
+        })
+        order = self.empty_order
+        self.iPadMini.taxes_id = self.tax_10pc_incl
+        sol1 = self.env['sale.order.line'].create({
+            'product_id': self.iPadMini.id,
+            'name': 'iPad Mini',
+            'product_uom_qty': 3.0,
+            'order_id': order.id,
+        })
+        order.recompute_coupon_lines()
+        self.assertEqual(len(order.order_line.ids), 2, "We should get the 10% discount line since we bought 872.73$")
+        order.carrier_id = self.env['delivery.carrier'].search([])[1]
+        order.delivery_set()
+
+        order.recompute_coupon_lines()
+        self.assertEqual(len(order.order_line.ids), 3, "We should get the delivery line but not the free delivery since we are below 872.73$ with the 10% discount")
+
+        p_minimum_threshold_free_delivery.sequence = 10
+        order.recompute_coupon_lines()
+        self.assertEqual(len(order.order_line.ids), 4, "We should get both promotion line since the free delivery will be applied first and won't change the SO total")
+
+    def test_shipping_cost_numbers(self):
+        # Free delivery should not be taken into account when checking for minimum required threshold
+        tax_15pc_excl = self.env['account.tax'].create({
+            'name': "15% Tax excl",
+            'amount_type': 'percent',
+            'amount': 15,
+        })
+        p_minimum_threshold_free_delivery = self.env['sale.coupon.program'].create({
+            'name': 'free shipping if > 872 tax exl',
+            'promo_code_usage': 'code_needed',
+            'promo_code': 'free_shipping',
+            'reward_type': 'free_shipping',
+            'program_type': 'promotion_program',
+            'rule_minimum_amount': 872,
+        })
+        self.p2 = self.env['sale.coupon.program'].create({
+            'name': 'Buy 4 ipads, get one for free',
+            'promo_code_usage': 'no_code_needed',
+            'reward_type': 'product',
+            'program_type': 'promotion_program',
+            'reward_product_id': self.iPadMini.id,
+            'rule_min_quantity': 3,
+            'rule_products_domain': '[["name","ilike","ipad mini"]]',
+        })
+        order = self.empty_order
+        self.iPadMini.taxes_id = self.tax_10pc_incl
+        sol1 = self.env['sale.order.line'].create({
+            'product_id': self.iPadMini.id,
+            'name': 'iPad Mini',
+            'product_uom_qty': 3.0,
+            'order_id': order.id,
+        })
+        # The delivery product has 15% tax on dball but not on dbbase. A module is probably adding the tax at some point.
+        # We want that tax to be set so we can be sure it is not added to the order total paid amount used in coupon as
+        # it was wrongly done before.
+        self.env.ref('delivery.delivery_carrier').taxes_id = tax_15pc_excl
+        order.carrier_id = self.env['delivery.carrier'].search([])[1]
+        order.delivery_set()
+        order.recompute_coupon_lines()
+        self.assertEqual(len(order.order_line.ids), 2, "")
+        self.assertEqual(order.reward_amount, 0)
+        # Shipping is 20 + 15%tax
+        self.assertEqual(sum([line.price_total for line in order._get_no_effect_on_threshold_lines()]), 23)
+        self.assertEqual(order.amount_untaxed, 872.73 + 20)
+
+        self.env['sale.coupon.apply.code'].sudo().apply_coupon(order, 'free_shipping')
+        order.recompute_coupon_lines()
+        self.assertEqual(len(order.order_line.ids), 3, "We should get the delivery line and the free delivery since we are below 872.73$ with the 10% discount")
+        self.assertEqual(order.reward_amount, -20)
+        self.assertEqual(sum([line.price_total for line in order._get_no_effect_on_threshold_lines()]), 0)
+        self.assertEqual(order.amount_untaxed, 872.73)
+
+        sol1.product_uom_qty = 4
+        order.recompute_coupon_lines()
+        self.assertEqual(len(order.order_line.ids), 4, "We should get a free iPad Mini")
+        self.assertEqual(order.reward_amount, -20 -290.91)
+        self.assertEqual(sum([line.price_total for line in order._get_no_effect_on_threshold_lines()]), 0)
+        self.assertEqual(order.amount_untaxed, 872.73)