feat (ee): APIs to configure an auto assignment limit for inboxes (#4672)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

spec/services/round_robin/manage_service_spec.rb

@@ -8,10 +8,14 @@ describe RoundRobin::ManageService do
   let!(:inbox_members) { create_list(:inbox_member, 5, inbox: inbox) }
 
   describe '#available_agent' do
-    it 'gets the first available agent and move agent to end of the list' do
+    it 'returns nil if allowed_member_ids is empty' do
+      expect(described_class.new(inbox: inbox, allowed_member_ids: []).available_agent).to eq nil
+    end
+
+    it 'gets the first available agent in allowed_member_ids and move agent to end of the list' do
       expected_queue = [inbox_members[0].user_id, inbox_members[4].user_id, inbox_members[3].user_id, inbox_members[2].user_id,
                         inbox_members[1].user_id].map(&:to_s)
-      round_robin_manage_service.available_agent
+      described_class.new(inbox: inbox, allowed_member_ids: [inbox_members[0].user_id, inbox_members[4].user_id]).available_agent
       expect(round_robin_manage_service.send(:queue)).to eq(expected_queue)
     end
 
@@ -19,8 +23,8 @@ describe RoundRobin::ManageService do
       expected_queue = [inbox_members[2].user_id, inbox_members[4].user_id, inbox_members[3].user_id, inbox_members[1].user_id,
                         inbox_members[0].user_id].map(&:to_s)
       # prority list will be ids in string, since thats what redis supplies to us
-      expect(round_robin_manage_service.available_agent(priority_list: [inbox_members[3].user_id.to_s,
-                                                                        inbox_members[2].user_id.to_s])).to eq inbox_members[2].user
+      expect(described_class.new(inbox: inbox, allowed_member_ids: [inbox_members[2].user_id])
+        .available_agent(priority_list: [inbox_members[3].user_id.to_s, inbox_members[2].user_id.to_s])).to eq inbox_members[2].user
       expect(round_robin_manage_service.send(:queue)).to eq(expected_queue)
     end