text: #!/usr/bin/env python
  #
  # A library that provides a Python interface to the Telegram Bot API
  # Copyright (C) 2015-2020
  # Leandro Toledo de Souza <devs@python-telegram-bot.org>
  #
  # This program is free software: you can redistribute it and/or modify
  # it under the terms of the GNU Lesser Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # This program is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU Lesser Public License for more details.
  #
  # You should have received a copy of the GNU Lesser Public License
  # along with this program.  If not, see [http://www.gnu.org/licenses/].
  from queue import Queue
  
  import pytest
  
  from telegram import (Update, Poll, PollOption, Bot, Message, User, Chat, CallbackQuery,
                        ChosenInlineResult, ShippingQuery, PreCheckoutQuery)
  from telegram.ext import PollHandler, CallbackContext, JobQueue
  
  message = Message(1, User(1, '', False), None, Chat(1, ''), text='Text')
  
  params = [
      {'message': message},
      {'edited_message': message},
      {'callback_query': CallbackQuery(1, User(1, '', False), 'chat', message=message)},
      {'channel_post': message},
      {'edited_channel_post': message},
      {'chosen_inline_result': ChosenInlineResult('id', User(1, '', False), '')},
      {'shipping_query': ShippingQuery('id', User(1, '', False), '', None)},
      {'pre_checkout_query': PreCheckoutQuery('id', User(1, '', False), '', 0, '')},
      {'callback_query': CallbackQuery(1, User(1, '', False), 'chat')}
  ]
  
  ids = ('message', 'edited_message', 'callback_query', 'channel_post',
         'edited_channel_post', 'chosen_inline_result',
         'shipping_query', 'pre_checkout_query', 'callback_query_without_message')
  
  
  @pytest.fixture(scope='class', params=params, ids=ids)
  def false_update(request):
      return Update(update_id=2, **request.param)
  
  
  @pytest.fixture(scope='function')
  def poll(bot):
      return Update(0, poll=Poll(1, 'question', [PollOption('1', 0), PollOption('2', 0)], 0, False,
                    False, Poll.REGULAR, True))
  
  
  class TestPollHandler(object):
      test_flag = False
  
      @pytest.fixture(autouse=True)
      def reset(self):
          self.test_flag = False
  
      def callback_basic(self, bot, update):
          test_bot = isinstance(bot, Bot)
          test_update = isinstance(update, Update)
          self.test_flag = test_bot and test_update
  
      def callback_data_1(self, bot, update, user_data=None, chat_data=None):
          self.test_flag = (user_data is not None) or (chat_data is not None)
  
      def callback_data_2(self, bot, update, user_data=None, chat_data=None):
          self.test_flag = (user_data is not None) and (chat_data is not None)
  
      def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
          self.test_flag = (job_queue is not None) or (update_queue is not None)
  
      def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
          self.test_flag = (job_queue is not None) and (update_queue is not None)
  
      def callback_context(self, update, context):
          self.test_flag = (isinstance(context, CallbackContext)
                            and isinstance(context.bot, Bot)
                            and isinstance(update, Update)
                            and isinstance(context.update_queue, Queue)
                            and isinstance(context.job_queue, JobQueue)
                            and context.user_data is None
                            and context.chat_data is None
                            and isinstance(context.bot_data, dict)
                            and isinstance(update.poll, Poll))
  
      def test_basic(self, dp, poll):
          handler = PollHandler(self.callback_basic)
          dp.add_handler(handler)
  
          assert handler.check_update(poll)
  
          dp.process_update(poll)
          assert self.test_flag
  
      def test_pass_user_or_chat_data(self, dp, poll):
          handler = PollHandler(self.callback_data_1, pass_user_data=True)
          dp.add_handler(handler)
  
          dp.process_update(poll)
          assert self.test_flag
  
          dp.remove_handler(handler)
          handler = PollHandler(self.callback_data_1, pass_chat_data=True)
          dp.add_handler(handler)
  
          self.test_flag = False
          dp.process_update(poll)
          assert self.test_flag
  
          dp.remove_handler(handler)
          handler = PollHandler(self.callback_data_2, pass_chat_data=True,
                                pass_user_data=True)
          dp.add_handler(handler)
  
          self.test_flag = False
          dp.process_update(poll)
          assert self.test_flag
  
      def test_pass_job_or_update_queue(self, dp, poll):
          handler = PollHandler(self.callback_queue_1, pass_job_queue=True)
          dp.add_handler(handler)
  
          dp.process_update(poll)
          assert self.test_flag
  
          dp.remove_handler(handler)
          handler = PollHandler(self.callback_queue_1,
                                pass_update_queue=True)
          dp.add_handler(handler)
  
          self.test_flag = False
          dp.process_update(poll)
          assert self.test_flag
  
          dp.remove_handler(handler)
          handler = PollHandler(self.callback_queue_2, pass_job_queue=True,
                                pass_update_queue=True)
          dp.add_handler(handler)
  
          self.test_flag = False
          dp.process_update(poll)
          assert self.test_flag
  
      def test_other_update_types(self, false_update):
          handler = PollHandler(self.callback_basic)
          assert not handler.check_update(false_update)
  
      def test_context(self, cdp, poll):
          handler = PollHandler(self.callback_context)
          cdp.add_handler(handler)
  
          cdp.process_update(poll)
          assert self.test_flag
  