[MERGE] various: Make the test suite demo data independant

Purpose
=======

This is the first huge step to improve the test suite in several ways:

- Make them demo data independent, allowing to modify the demo data without having to adapt the tests depending on it. It also allows to have a beautiful + convenient demo dataset to make a demonstration, and to configure complex data in the tests to manage the corner cases.
- Improve the test performances by converting them into SavepointCase. Each test will be rollbacked to it's initial state, after the setUpClass call. That way the different data are not re-created at each test for nothing.
- Introduce several test classes in base/tests/common.py to launch a TransactionCase, HttpCase or SavepointCase test with an available demo user, portal user or a large set of partners.
- This is the first step to tend to a rolling release process, allowing to execute the tests (or a subset of the tests) on a migrated base, for example.

closes odoo/odoo#39868

Taskid: 2075739
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/addons/stock/tests/test_warehouse.py b/addons/stock/tests/test_warehouse.py
index 859fe6de94d..f5ffd7b1907 100644
--- a/addons/stock/tests/test_warehouse.py
+++ b/addons/stock/tests/test_warehouse.py
@@ -452,6 +452,17 @@ class TestWarehouse(TestStockCommon):
 
     def test_noleak(self):
         # non-regression test to avoid company_id leaking to other warehouses (see blame)
+        partner = self.env['res.partner'].create({'name': 'Chicago partner'})
+        company = self.env['res.company'].create({
+            'name': 'My Company (Chicago)1',
+            'currency_id': self.ref('base.USD')
+        })
+        self.env['stock.warehouse'].create({
+            'name': 'Chicago Warehouse2',
+            'company_id': company.id,
+            'code': 'Chic2',
+            'partner_id': partner.id
+        })
         wh = self.env["stock.warehouse"].search([])
 
         assert len(set(wh.mapped("company_id.id"))) > 1