Make channelName optionnal in tests only and validators

Fix tests channel displayName

Make channelName in createUser optionnal on server side to not break api

Fix auto channelName with createUser in tests

server/middlewares/validators/users.ts

@@ -56,7 +56,7 @@ const usersAddValidator = [
   body('username').custom(isUserUsernameValid).withMessage('Should have a valid username (lowercase alphanumeric characters)'),
   body('password').custom(isUserPasswordValidOrEmpty).withMessage('Should have a valid password'),
   body('email').isEmail().withMessage('Should have a valid email'),
-  body('channelName').custom(isActorPreferredUsernameValid).withMessage('Should have a valid channel name'),
+  body('channelName').optional().custom(isActorPreferredUsernameValid).withMessage('Should have a valid channel name'),
   body('videoQuota').custom(isUserVideoQuotaValid).withMessage('Should have a valid user quota'),
   body('videoQuotaDaily').custom(isUserVideoQuotaDailyValid).withMessage('Should have a valid daily user quota'),
   body('role')
@@ -76,20 +76,17 @@ const usersAddValidator = [
         .json({ error: 'You can only create users (and not administrators or moderators)' })
     }
 
-    if (!req.body.channelName) {
-      return res.status(400)
-        .json({ error: 'Channel name is required.' })
-    }
-
-    if (req.body.channelName === req.body.username) {
-      return res.status(400)
-        .json({ error: 'Channel name cannot be the same as user username.' })
-    }
+    if (req.body.channelName) {
+      if (req.body.channelName === req.body.username) {
+        return res.status(400)
+          .json({ error: 'Channel name cannot be the same as user username.' })
+      }
 
-    const existing = await ActorModel.loadLocalByName(req.body.channelName)
-    if (existing) {
-      return res.status(409)
-        .json({ error: `Channel with name ${req.body.channelName} already exists.` })
+      const existing = await ActorModel.loadLocalByName(req.body.channelName)
+      if (existing) {
+        return res.status(409)
+          .json({ error: `Channel with name ${req.body.channelName} already exists.` })
+      }
     }
 
     return next()