chore: Automate conversation display_id generation with db triggers (#1412)

Automate conversation display_id generation with db triggers

Co-authored-by: Saurabh Mehta <saurabh1.mehta@airtel.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>

spec/factories/conversations.rb

@@ -3,7 +3,6 @@
 FactoryBot.define do
   factory :conversation do
     status { 'open' }
-    display_id { rand(10_000_000) }
     agent_last_seen_at { Time.current }
     locked { false }
     identifier { SecureRandom.hex }

spec/models/conversation_spec.rb

@@ -109,8 +109,8 @@ RSpec.describe Conversation, type: :model do
     end
 
     it 'adds a message for system auto resolution if marked resolved by system' do
-      conversation2 = create(:conversation, status: 'open', account: account, assignee: old_assignee)
       account.update(auto_resolve_duration: 40)
+      conversation2 = create(:conversation, status: 'open', account: account, assignee: old_assignee)
       Current.user = nil
       conversation2.update(status: :resolved)
       system_resolved_message = "Conversation was marked resolved by system due to #{account.auto_resolve_duration} days of inactivity"
@@ -124,7 +124,7 @@ RSpec.describe Conversation, type: :model do
 
     it 'does trigger AutoResolutionJob if conversation reopened and account has auto resolve duration' do
       account.update(auto_resolve_duration: 40)
-      expect { conversation.update(status: :open) }
+      expect { conversation.reload.update(status: :open) }
         .to have_enqueued_job(AutoResolveConversationsJob).with(conversation.id)
     end
   end

spec/models/message_spec.rb

@@ -13,6 +13,7 @@ RSpec.describe Message, type: :model do
     let(:message) { build(:message, account: create(:account)) }
 
     it 'updates conversation last_activity_at when created' do
+      message.save!
       expect(message.created_at).to eq message.conversation.last_activity_at
     end