An example of a Rakefile

Rakefile

$:.push('lib')
require 'sales_engine'

def display_load_path
  puts "Current `$LOAD_PATH` (or `$:`):"
  puts "Load Path: #{$:.join("\n")}"
end

desc "Add TEST directory to the load path"
task :load_path do
  display_load_path

  # We want to put the test directory on the load path
  test_path = File.expand_path('../test', __FILE__)
  if $LOAD_PATH.include?(test_path)
    puts "---\nTEST DIR is already on the load path\n---\n"
  else
    puts "---\nAdding TEST DIR to the load path\n---\n"
    $LOAD_PATH.unshift(test_path)
  end

  display_load_path
end


def cleanup
  puts "Cleaning Up My Mess"
end

task :environment do
  puts "Loading Environment"
  SalesEngine.startup
end

task :external do
  puts "Loading External Environment"
end

namespace :test do

  [ "third", "fourth"].each do |task_name|
    desc "Running the #{task_name} task"
    task task_name  => [ :environment, :external ] do
      puts "Running task #{task_name}"
      cleanup
    end
  end

  desc "Hey partner fix this for me while I go drink"
  task "first" => :environment do
    merchant = SalesEngine::Merchant.find_by_id(1)
    puts merchant.name
    cleanup
  end

  desc "Hey partner fix this for me while I go drink"
  task "second" => [:environment, :external ] do
    merchant = SalesEngine::Merchant.find_by_id(2)
    puts merchant.name
    cleanup
  end
end