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: browser_spec.rb
    path of file: ./repos/arachni/spec/arachni
    
    the code of the file until where you have to start completion: require 'spec_helper'

describe Arachni::Browser do

    before( :all ) do
        @url = Arachni::Utilities.normalize_url( web_server_url_for( :browser ) )
    end

    before( :each ) do
      
    
    def transitions_from_array( transitions )
        transitions.map do |t|
            element, event = t.first.to_a

            options = {}
            if element == :page && event == :load
                options.merge!( url: @browser.dom_url, cookies: {} )
            end

            if element.is_a? Hash
                element = described_class::ElementLocator.new( element )
            end