[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, 1 insertions, 1 deletions

diff --git a/addons/test_website/tests/test_multi_company.py b/addons/test_website/tests/test_multi_company.py
index 8c9c6859959..1395466ab47 100644
--- a/addons/test_website/tests/test_multi_company.py
+++ b/addons/test_website/tests/test_multi_company.py
@@ -9,7 +9,7 @@ class TestMultiCompany(HttpCase):
 
     def test_company_in_context(self):
         """ Test website company is set in context """
-        website = self.env['website'].browse(1)
+        website = self.env.ref('website.default_website')
         company = self.env['res.company'].create({'name': "Adaa"})
         website.company_id = company
         response = self.url_open('/multi_company_website')