gistfile1.rb

module M
  def method
    puts "hello"
  end
end

def execute(current_module, &block)
  Object.new.tap do |o|
    o.extend(current_module)
    o.instance_eval &block
  end
end

execute(M) do
  method
end

# moj case

RSpec::Matchers.define :set_has_subscribed_cookie do
  include CookieSupport

  match do |response|
    parse_response_cookies(response).find do |cookie|
      cookie[:name] == 'has_subscribed' && \
      # 1 day should be more than enough tolerance.
      Time.parse(cookie[:expires]) - Time.now <= 1.year + 1.day
    end
  end
  
  failure_message_for_should do
    "Should set a 'has_subscribed' cookie but doesn't"
  end

  failure_message_for_should_not do
    "Should not set a 'has_subscribed' cookie but does"
  end
end