You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: radio_button_input_test.rb
    path of file: ./repos/view_components/test/lib/primer/forms
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require "lib/test_helper"

class Primer::Forms::RadioButtonInputTest < Minitest::Test
  include Primer::ComponentTestHelpers

  class NestedForm < ApplicationForm
    form do |nested_form|
      nested_form.text_field(
     
    
  def test_hidden_radio_button_group
    render_in_view_context do
      primer_form_with(url: "/foo") do |f|
        render_inline_form(f) do |radio_form|
          radio_form.radio_button_group(name: :foos, label: "Foos", hidden: true) do |radio_group|
            radio_group.radio_button(name: :foo, label: "Foo", value: "foo")
          end
        end
      end
    end

    assert_selector "fieldset", visible: :hidden
    assert_selector "input[name=foo]", visible: :hidden
  end