old_contents: from django.contrib import messages
  
  
  class ChatPage:
      def __init__(self, request):
          """
          :param request: HTTPRequest
          :return:
          """
          self.request = request
  
      def set_user_token(self, user_token):
          """
          Sets user token
          :param user_token: String
          :return:
          """
          messages.success(self.request, user_token)
  
      def get_user_token(self):
          """
          Gets user token
          :return: String|Boolean user token or false
          """
          storage = messages.get_messages(self.request)
          result = False
          for message in storage:
              message_item = str(message)
              if message.level == messages.SUCCESS and len(message_item) == 24:
                  result = message_item
                  break
  
          return result
new_contents: from django.contrib import messages
  
  
  class ChatPage:
      def __init__(self, request):
          """
          :param request: HTTPRequest
          :return:
          """
          self.request = request
  
      def set_user_token(self, user_token):
          """
          Sets user token
          :param user_token: String
          :return: result: Boolean
          """
          try:
              messages.success(self.request, user_token)
              result = True
          except Exception as ex:
              result = False
          return result
  
      def get_user_token(self):
          """
          Gets user token
          :return: String|Boolean user token or false
          """
          storage = messages.get_messages(self.request)
          result = False
          for message in storage:
              message_item = str(message)
              if message.level == messages.SUCCESS and len(message_item) == 24:
                  result = message_item
                  break
  
          return result
subject: add tests fof apps.chat.utils