rake dependencies for starting server outside ruby ( e.g. PythonSimpleHTTPServer ) and cleanup

Rakefile

require "rake/testtask"

Rake::TestTask.new do |t|
  t.description = nil
  t.pattern     = 'spec/**/*_spec.rb'
end

desc 'start server and do spec and cleanup'
task :spec => :test  do
  Process.kill(:INT, @pid)
end

task :test => :start_server

task :start_server do
  @pid = spawn('python', '-m', 'SimpleHTTPServer', :out => '/dev/null', :err => [:child, :out])
end