Snippet from rspec-expectations showing failure due to usage of `public_send`

rspec-expectations_spec.rb

let(:proxy_class) do
  Class.new(BasicObject) do
    def initialize(target)
      @target = target
    end

    def proxied?
      true
    end

    def method_missing(name, *args)
      @target.send(name, *args)
    end
  end
end

it 'works properly on BasicObject-subclassed proxy objects' do
  #fails when be_ matcher uses #public_send as the `proxied?` method isn't public on the proxy class
  expect(proxy_class.new(Object.new)).to be_proxied
end