gistfile1.rb

module Company
  class ClientDirs
    attr_reader :template_path, :dest_base_path, :client_domain

    #takes Pathname objects as initial params
    def initialize(client_template_path, dest_base_path)
      @template_path  = client_template_path
      @dest_base_path = dest_base_path
      @client_domain  = ""
    end 

    def template_exists?
      template_path.directory?
    end 

    def dest_base_path_exists?
      dest_base_path.directory?
    end 

    def client_domain=(client_domain)
      @client_domain = client_domain.downcase
    end 
        
    def client_domain_valid?
      case client_domain
      when /[^-a-z0-9.]/ then false
      when /[.](com|net|edu|gov|org|biz|tv)$/ then true
      else false
      end 
    end 

    def client_dir_path
      dest_base_path + client_domain
    end 

    def client_dir_exists?
      client_dir_path.directory?  # what's the best way to restructure this code to mock this?
    end 

  end 
end

### spec below ####
require 'spec_helper'

describe Company::ClientDirs do

  context "the destination directory methods" do
    let(:ocd) do
      dest_base_path = double('dest_base_path')
      dest_base_path.stub(:directory?).and_return(true)
      dest_base_path.stub(:to_s).and_return(DEST_BASE_PATH)
      dest_base_path.stub("+").and_return(DEST_BASE_PATH + "/#{CLIENT_DOMAIN}")

      Company::ClientDirs.new(CLIENT_DIR_TEMPL,dest_base_path)
    end 

     it "should return the client dir path" do
      ocd.client_dir_path.should == DEST_BASE_PATH + "/#{CLIENT_DOMAIN}"
    end 
 
    it "should determine whether the client destination dir exists" do
      ocd.client_dir_exists?.should be_false
    end 

  end 
end