Testing: run multiple dispatches on same instance

lib/telegram/bot/updates_controller/testing.rb

@@ -0,0 +1,47 @@
+module Telegram
+  module Bot
+    class UpdatesController
+      module Testing
+        IVARS_TO_KEEP = %i(@_session).freeze
+
+        # Perform multiple dispatches on same instance.
+        def dispatch_again(bot = nil, update = nil)
+          recycle!
+          initialize(bot, update)
+          dispatch
+        end
+
+        # Cleans controller between dispatches.
+        # Seems like there is nothing to clean between requests for now:
+        # everything will be rewriten with #initialize.
+        #
+        # With `full` set to `true` it'll clear all cached instance variables.
+        def recycle!(full = false)
+          return unless full
+          (instance_variables - IVARS_TO_KEEP).each do |ivar|
+            remove_instance_variable(ivar)
+          end
+        end
+
+        protected
+
+        # Stubs session.
+        def session
+          @_session ||= Testing::SessionHash.new
+        end
+
+        class SessionHash < Session::SessionHash
+          def initialize
+            @data = {}
+            @loaded = true
+            @exists = true
+          end
+
+          alias_method :destroy, :clear
+          alias_method :load!, :id
+          alias_method :commit, :id
+        end
+      end
+    end
+  end
+end