[IMP] real_estate: add test cases in real estate module

In this tutorial, get knowledge about runbot and create a test cases which
create offer for sold property and Sell a property with no accepted offers
implement this two test cases. also add reset of Garden Area and Orientation
when you uncheck the Garden checkbox this test case also implement.
this is useful for test some type of cases which can raise error.

Author: gasa-odoo

real_estate/__manifest__.py

@@ -23,5 +23,5 @@
     ],
     "demo": [
         'demo/estate_property_demo_data.xml',
-    ],
+    ]
 }

real_estate/models/estate.py

@@ -100,9 +100,11 @@ def _onchange_garden(self):
 
     def action_mark_sold(self):
         for record in self:
+            if not any(offer.status == 'accepted' for offer in record.offer_ids):
+                raise UserError("You cannot sell a property without an accepted offer.")
             if record.state == 'cancelled':
                 raise UserError("Canceled properties cannot be sold.")
-            record.state = 'sold'
+                record.state = 'sold'
 
     def action_mark_cancelled(self):
         for record in self:

real_estate/models/estate_property_offer.py

@@ -69,16 +69,16 @@ def create(self, vals_list):
         for vals in vals_list:
             property_id = vals.get('property_id')
             amount = vals.get('price')
+            property = self.env['estate.property'].browse(property_id)
+            existing_offers = property.offer_ids.filtered(lambda o: o.price is not None and amount is not None and o.price >= amount)
 
             if property_id and amount:
-                existing_offers = self.search([
-                    ('property_id', '=', property_id),
-                    ('price', '>=', amount)
-                ])
+                if property.state == 'sold':
+                    raise UserError("Cannot create offer for a sold property.")
+
                 if existing_offers:
                     raise ValidationError("An offer with a higher or equal price already exists.")
 
-                property = self.env['estate.property'].browse(property_id)
                 if property.state == 'new':
                     property.state = 'offer_received'
 

real_estate/tests/__init__.py

@@ -0,0 +1 @@
+from . import test_property_offer

real_estate/tests/test_property_offer.py

@@ -0,0 +1,67 @@
+from odoo.tests.common import TransactionCase
+from odoo.tests import Form
+from odoo.exceptions import UserError
+from odoo.tests import tagged
+
+
+@tagged('post_install', '-at_install')
+class TestEstatePropertyLogic(TransactionCase):
+    def setUp(self):
+        super().setUp()
+        Property = self.env['estate.property']
+        Offer = self.env['estate.property.offer']
+
+        self.partner = self.env['res.partner'].create({
+            'name': 'Test Buyer',
+            'email': '[email protected]'
+        })
+
+        self.property = Property.create({
+            'name': 'Test Property',
+            'state': 'new',
+            'expected_price': 150000,
+            'garden': True,
+            'garden_area': 100,
+            'garden_orientation': 'north',
+        })
+
+        self.offer = Offer.create({
+            'property_id': self.property.id,
+            'partner_id': self.partner.id,
+            'price': 160000,
+        })
+
+    def test_cannot_create_offer_on_sold_property(self):
+        self.property.state = 'sold'
+        with self.assertRaises(UserError):
+            self.env['estate.property.offer'].create({
+                'property_id': self.property.id,
+                'partner_id': self.partner.id,
+                'price': 170000
+            })
+
+    def test_cannot_sell_property_without_accepted_offer(self):
+        self.property.offer_ids.unlink()
+        with self.assertRaises(UserError):
+            self.property.action_mark_sold()
+
+    def test_can_sell_property_with_accepted_offer(self):
+        self.offer.action_accept()
+        self.property.action_mark_sold()
+        self.assertEqual(self.property.selling_price, self.offer.price)
+        self.assertEqual(self.property.buyer, self.partner)
+
+    def test_reset_garden_fields_when_unchecked(self):
+        form = Form(self.env['estate.property'])
+        form.name = 'Garden Test'
+        form.garden = True
+        form.expected_price = 15000
+        form.garden_area = 50
+        form.garden_orientation = 'east'
+        prop = form.save()
+
+        prop.garden = False
+        prop._onchange_garden()
+
+        self.assertEqual(prop.garden_area, 0)
+        self.assertFalse(prop.garden_orientation)