Rspec stubs are bad practice

gistfile1.rb

require 'rspec/mocks/standalone'

class Service
  def self.access_thirdparty_action
    puts "communicating with the world!"
  end
end

class ServiceManager

  def work
    puts "before work"
    Service.access_thirdparty_action
    puts "after work"
  end
end

describe Service do
  it "works" do
    Service.stub!(:access_thirdparty_action)
    ServiceManager.new.work
  end
end