Ability to use type-castion with telegram-bot-types

lib/telegram/bot/updates_controller/rspec_helpers.rb

@@ -0,0 +1,8 @@
+RSpec.shared_context 'telegram/bot/updates_controller' do
+  let(:instance) { described_class.new(bot, update) }
+  let(:update) { {payload_type => payload} }
+  let(:payload_type) { 'some_type' }
+  let(:payload) { double(:payload) }
+  let(:bot) { double(username: bot_name) }
+  let(:bot_name) { 'bot' }
+end