[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, 8 insertions, 3 deletions

diff --git a/addons/maintenance/tests/test_maintenance.py b/addons/maintenance/tests/test_maintenance.py
index e4decedb583..e4acceb1767 100644
--- a/addons/maintenance/tests/test_maintenance.py
+++ b/addons/maintenance/tests/test_maintenance.py
@@ -36,12 +36,17 @@ class TestEquipment(TransactionCase):
             groups_id=[(6, 0, [res_manager.id])]
         ))
 
+        self.equipment_monitor = self.env['maintenance.equipment.category'].create({
+            'name': 'Monitors',
+            'alias_id': self.env.ref('maintenance.mail_alias_equipment').id,
+        })
+
     def test_10_equipment_request_category(self):
 
         # Create a new equipment
         equipment_01 = self.equipment.with_user(self.manager).create({
             'name': 'Samsung Monitor "15',
-            'category_id': self.ref('maintenance.equipment_monitor'),
+            'category_id': self.equipment_monitor.id,
             'technician_user_id': self.ref('base.user_root'),
             'owner_user_id': self.user.id,
             'assign_date': time.strftime('%Y-%m-%d'),
@@ -80,7 +85,7 @@ class TestEquipment(TransactionCase):
         """ Check the cron creates the necessary preventive maintenance requests"""
         equipment_cron = self.equipment.create({
             'name': 'High Maintenance Monitor because of Color Calibration',
-            'category_id': self.ref('maintenance.equipment_monitor'),
+            'category_id': self.equipment_monitor.id,
             'technician_user_id': self.ref('base.user_root'),
             'owner_user_id': self.user.id,
             'assign_date': time.strftime('%Y-%m-%d'),
@@ -113,7 +118,7 @@ class TestEquipment(TransactionCase):
         })
         equipment = self.equipment.create({
             'name': 'High Maintenance Monitor because of Color Calibration',
-            'category_id': self.ref('maintenance.equipment_monitor'),
+            'category_id': self.equipment_monitor.id,
             'technician_user_id': self.ref('base.user_root'),
             'owner_user_id': self.user.id,
             'assign_date': time.strftime('%Y-%m-%d'),