[FIX] mail, im_livechat: make livechat work properly

- fix traceback on receiving first livechat message due to bad computation of
  correspondent
- fix missing [0] in return of country name_get in channel_info
- fix visitor/correspondent computation to work when chatting with oneself
- reintroduce livechat ordered by last message in discuss sidebar
- improve mock server to make these fixes possible to test
- introduce corresponding tests

PR: #56243
task-2323670

closes odoo/odoo#56414

X-original-commit: f623bfd2c8819604c709bc723153c071dca6e3cc
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

1 files changed, 16 insertions, 8 deletions

diff --git a/addons/mail/static/src/utils/test_utils.js b/addons/mail/static/src/utils/test_utils.js
index dfad584dfeb..4ceb05d7736 100644
--- a/addons/mail/static/src/utils/test_utils.js
+++ b/addons/mail/static/src/utils/test_utils.js
@@ -260,33 +260,41 @@ const afterNextRender = (function () {
 function beforeEach(self) {
     const data = MockModels.generateData();
 
+    data.partnerRootId = 2;
     data['res.partner'].records.push({
         active: false,
         display_name: "OdooBot",
-        id: 2,
+        id: data.partnerRootId,
     });
-    data.partnerRootId = 2;
 
+    data.currentPartnerId = 3;
     data['res.partner'].records.push({
         display_name: "Your Company, Mitchell Admin",
-        id: 3,
+        id: data.currentPartnerId,
         name: "Mitchell Admin",
     });
-    data.currentPartnerId = 3;
+    data.currentUserId = 2;
     data['res.users'].records.push({
         display_name: "Your Company, Mitchell Admin",
-        id: 2,
+        id: data.currentUserId,
         name: "Mitchell Admin",
         partner_id: data.currentPartnerId,
     });
-    data.currentUserId = 2;
 
+    data.publicPartnerId = 4;
     data['res.partner'].records.push({
         active: false,
         display_name: "Public user",
-        id: 4,
+        id: data.publicPartnerId,
+    });
+    data.publicUserId = 3;
+    data['res.users'].records.push({
+        active: false,
+        display_name: "Public user",
+        id: data.publicUserId,
+        name: "Public user",
+        partner_id: data.publicPartnerId,
     });
-    data.publicPartnerId = 4;
 
     const originals = {
         '_.debounce': _.debounce,