Tirei o proc!

testing.rb

module MpaStory
  module Job
    class FakeNotificationCounter
      def initialize
        @count = {}
      end

      def increment(name)
        @count[name.to_sym] ||= 0
        @count[name.to_sym]  += 1
      end

      def method_missing(name)
        @count[name.to_sym]
      end
    end

    class FakeBusinessRuleParser
      attr_reader :business_rules

      def initialize
        @business_rules = {}
      end

      def <<(rule, expression)
        @business_rules[rule] = expression

        init_attributes_reader
      end

      private

      def init_attributes_reader
        @business_rules.each do |business_rule, expression|
          create_attribute_reader(business_rule) { expression }
        end
      end

      def create_attribute_reader(business_rule, &expression)
        self.class_eval {
          define_method(business_rule, &expression)
        }
      end
    end

    class FakeNotificationSender
      attr_reader :notifications

      def initialize
        @counter = FakeNotificationCounter.new

        @notifications = []
      end

      def <<(value)
        @notifications << value

        init_attributes_reader
      end

      def count
        @counter
      end

      private

      def init_attributes_reader
        @notifications.each do |notification|
          create_attribute_reader notification
        end
      end

      def create_attribute_reader(notification)
        self.class.send :define_method, notification do |params = {}|
          @counter.increment notification
        end
      end
    end

    def self.included(base)
      base.extend ClassMethods

      instance = Instance.create status: InstanceStatus::READY

      @@_artifact             = Artifact.new instance
      @@_notification_sender  = FakeNotificationSender.new
      @@_business_rule_parser = FakeBusinessRuleParser.new

      @@_condition = 0

      base.instance_variable_set :@_klass, base
      @@_klass = base

      base.class_eval do
        def artifacts
          @@_artifact
        end

        def condition
          @@_klass.class_variable_get :@@_condition
        end

        def set_condition(value)
          @@_condition = value
        end

        def notifications
          @@_notification_sender
        end

        def business_rules
          @@_business_rule_parser
        end
      end
    end

    module ClassMethods
      def artifacts
        @_klass.class_variable_get :@@_artifact
      end

      def condition
        @_klass.class_variable_get :@@_condition
      end

      def notifications
        @_klass.class_variable_get :@@_notification_sender
      end

      def business_rules
        @_klass.class_variable_get :@@_business_rule_parser
      end

      def perform
        job = @_klass.new
        job.perform
      end
    end
  end
end