IMPL calls super in group_backend res_users compute_share

FIX applies pre-commit
IMPL adds test for share of backend user
FIX pre-commit pass
IMPL removes mail.activity.mixin from dummy model because it is not needed for the test
IMPL renames and divide the base_group_backend into 2 groups one that provide the basic rights and another that allow login in the app
IMPL changes backend ui users to a user type
FIX pre-commit pass
FIX removes useless imports
FIX adds share to group_backend_ui_users
IMPL adds mail_channel to access rights
FIX tests now working
FIX pre-commit pass

base_group_backend/demo/backend_dummy_model.py

@@ -3,7 +3,6 @@ from odoo import fields, models
 
 class BackendDummyModel(models.Model):
     _name = "backend.dummy.model"
-    _inherit = ["mail.activity.mixin"]
     _description = "Backend Dummy Model demo"
 
     my_value = fields.Char(name="Value", required=True)

base_group_backend/demo/backend_dummy_model.xml

@@ -1,13 +1,12 @@
 <?xml version="1.0" encoding="utf-8" ?>
-<odoo>
-
+<odoo noupdate="1">
     <record id="backend_dummy_model_tree_view" model="ir.ui.view">
         <field name="name">Backend dummy tree view</field>
         <field name="model">backend.dummy.model</field>
         <field name="arch" type="xml">
             <tree create="false" delete="false">
                 <field name="my_value" />
-                <field name="my_other_value" />
+                <field name="my_other_value" groups="base.group_user" />
             </tree>
         </field>
     </record>
@@ -24,20 +23,20 @@
         id="menu_dummy_root"
         name="Dummy"
         sequence="100"
-        groups="group_backend,base.group_user"
+        groups="group_backend_ui_users,base.group_user"
     />
     <menuitem
         id="menu_dummy_menu"
         name="Dummy"
         sequence="10"
-        groups="group_backend,base.group_user"
+        groups="group_backend_ui_users,base.group_user"
         parent="menu_dummy_root"
     />
     <menuitem
         id="menu_dummy_list"
         name="Dummy list"
         sequence="100"
-        groups="group_backend,base.group_user"
+        groups="group_backend_ui_users,base.group_user"
         parent="menu_dummy_root"
         action="action_dummy_list"
     />

base_group_backend/demo/ir.model.access.csv

@@ -1,3 +1,3 @@
 "id","name","model_id:id","group_id:id","perm_read","perm_write","perm_create","perm_unlink"
-"backend_dummy_models","backend dummy.model","model_backend_dummy_model",group_backend,1,0,0,0
+"backend_dummy_models","backend dummy.model","model_backend_dummy_model",group_backend_ui_users,1,0,0,0
 "backend_dummy_models_user_grp","backend dummy.model user grp","model_backend_dummy_model",base.group_user,1,0,0,0

base_group_backend/demo/res_partners.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+    <record id="demo_partner" model="res.partner">
+        <field name="name">Demo partner backend</field>
+    </record>
+    <record id="demo_partner1" model="res.partner">
+        <field name="name">Demo partner backend 1</field>
+    </record>
+    <record id="demo_partner2" model="res.partner">
+        <field name="name">Demo partner backend 2</field>
+    </record>
+</odoo>

base_group_backend/demo/res_users.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+    <record id="user_demo" model="res.users">
+        <field name="login">demo backend user</field>
+        <field name="groups_id" eval="[Command.set([ref('base.group_user')])]" />
+        <field name="partner_id" ref="base_group_backend.demo_partner" />
+    </record>
+    <record id="user_demo_external" model="res.users">
+        <field name="login">demo backend user 1</field>
+        <field name="groups_id" eval="[Command.set([ref('base.group_portal')])]" />
+        <field name="partner_id" ref="base_group_backend.demo_partner1" />
+    </record>
+    <record id="user_demo_external_with_ui" model="res.users">
+        <field name="login">demo backend user 2</field>
+        <field
+            name="groups_id"
+            eval="[Command.set([ref('base_group_backend.group_backend_ui_users')])]"
+        />
+        <field name="partner_id" ref="base_group_backend.demo_partner2" />
+    </record>
+</odoo>

base_group_backend/demo/test-model.xml

@@ -1,8 +1,7 @@
-<odoo>
-
+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
     <record model="backend.dummy.model" id="dummy_model_1">
         <field name="my_value">hello</field>
         <field name="my_other_value">hello</field>
     </record>
-
 </odoo>