Shoulda context that allows stubbing of constants

gistfile1.rb

def context_with_constants(name, object, constants, &block)
  object ||= Object

  context "#{name} with constants #{constants.inspect}" do
    setup do
      @saved_constants = {}
      constants.each do |k, v|
        @saved_constants[k] = object.const_get(k)
        Kernel::silence_warnings { object.const_set(k, v) }
      end
    end
    
    block.bind(self).call if block_given?
    
    teardown do
      constants.each do |k, v|
        @saved_constants[k] = object.const_get(k)
        Kernel::silence_warnings { object.const_set(k, @saved_constants[k]) }
      end
    end
  end
end