:symbol.rolify raises, "symbol".rolify works

extensions_string.rb

class String

  def rolify
    Roles.for(to_sym)
  end

end

extensions_symbol.rb

class Symbol

  def rolify
    Roles.for(self)
  end

end

roles_spec.rb

require 'rails_helper'
require 'extensions/symbol'
require 'extensions/string'
require 'roles'

RSpec.describe Roles, type: :model do
  subject { described_class }
  let!(:guest) { Roles.guest }

  it "rolifies a symbol", focus: true do
    expect(:guest.rolify).to eq guest
  end

end