Cucumber Definite Article Helper

definite_article_helper.rb

module DefiniteArticleHelper
  def the
    @the ||= DefiniteArticle.new
  end

  def push_context
    @the_contexts ||= []
    @the_contexts.push(the.clone)
    @the = nil
  end

  def pop_context
    @the_contexts ||= []
    old_context = @the.clone
    @the = @the_contexts.pop() unless @the_contexts.empty?
    old_context
  end

  def in_a_new_context(shared_state={})
    logged_out = log_out
    push_context
    shared_state.each do |key, val|
      the.send("#{key}=", val)
    end
    yield
    log_out
    context = pop_context
    log_in(the.user) if logged_out
    context
  end

  def clear_contexts
    @the_contexts.try(:clear)
  end

  class DefiniteArticle
    def initialize
      @data = {}
    end

    def method_missing(method_name, value=nil)
      if method_name.to_s =~ /(.*)=$/
        @data[$1.to_sym] = value
      else
        @data[method_name]
      end
    end
  end
end

After do
  clear_contexts
end

World(DefiniteArticleHelper)