require 'spec_helper'

# Ensure we have both constants to play with
begin
  ActionDispatch::Reloader
rescue
  module ActionDispatch; module Reloader; def self.to_prepare; end; end; end
end

begin
  ActionDispatch::Callbacks
rescue
  module ActionDispatch; module Callbacks; def self.to_prepare; end; end; end
end


describe ActiveAdmin::Reloader do

  let(:rails_app){ mock(:reload_routes! => true)}
  let(:mock_app){ mock(:load_paths => ["app/admin"], :unload! => true)}
  let(:reloader){ ActiveAdmin::Reloader.new(rails_app, mock_app, "3.1.0")}

  it "should initialize a new file update checker" do
    ActiveSupport::FileUpdateChecker.should_receive(:new).with(mock_app.load_paths).and_return(mock(:execute_if_updated => true))
    ActiveAdmin::Reloader.new(rails_app, mock_app, '3.1.0').attach!
  end

  describe "#reloader_class" do
    it "should use ActionDispatch::Reloader if rails 3.1" do
      reloader = ActiveAdmin::Reloader.new rails_app, mock_app, '3.1.0'
      reloader.reloader_class.should == ActionDispatch::Reloader
    end

    it "should use ActionDispatch::Callbacks if rails 3.0" do
      reloader = ActiveAdmin::Reloader.new rails_app, mock_app, '3.0.0'
      reloader.reloader_class.should == ActionDispatch::Callbacks
    end
  end

  describe "#reload!" do

    it "should unload the active admin app" do
      mock_app.should_receive(:unload!)
      reloader.reload!
    end

    it "should reload the rails app routes" do
      rails_app.should_receive(:reload_routes!)
      reloader.reload!
    end

    it 'should reset the files within the file_update_checker' do
      reloader.file_update_checker.paths.should_receive(:clear)
      reloader.file_update_checker.paths.should_receive(:<<).with("app/admin")
      reloader.reload!
    end

  end

  describe "#watched_paths" do
    let(:mock_app){ ActiveAdmin::Application.new }
    let(:admin_path){ File.join(Rails.root, "app", "admin") }

    before do
      mock_app.load_paths = [admin_path]
    end

    it "should return the load path directories" do
      reloader.watched_paths.should include(admin_path)
    end

    it "should include all files in the directory" do
      root = Rails.root + "/app/admin"
      reloader.watched_paths.should include(*Dir["#{admin_path}/**/*.rb"])
    end

  end


end