Rakefile

require 'bundler'
Bundler::GemHelper.install_tasks

multitask :default => 'test:ruby'

require 'rake/testtask'
namespace :test do
  desc %(Run all tests)
  multitask :all => ['test:ruby', 'test:js']

  desc %(Test Ruby code)
  Rake::TestTask.new(:ruby) do |test|
    test.libs << 'lib' << 'test'
    test.test_files = Dir.glob("#{File.dirname(__FILE__)}/test/**/test_*.rb").sort
  end

  desc %(Test Javascript code)
  multitask :js => ['test:server', 'test:open']

  desc %(Starts the test server)
  task :server do
    system 'bundle exec ruby test/javascript/server.rb'
  end

  desc %(Starts the test server which reloads everything on each refresh)
  task :reloadable do
    exec "bundle exec shotgun test/javascript/config.ru -p #{PORT} --server thin"
  end

  task :open do
    url = "http://localhost:#{PORT}"
    puts "Opening test app at #{url} ..."
    sleep 3
    system( *browse_cmd(url) )
  end
end

PORT = 4567

# Returns an array e.g.: ['open', 'http://example.com']
def browse_cmd(url)
  require 'rbconfig'
  browser = ENV['BROWSER'] ||
    (RbConfig::CONFIG['host_os'].include?('darwin') && 'open') ||
    (RbConfig::CONFIG['host_os'] =~ /msdos|mswin|djgpp|mingw|windows/ && 'start') ||
    %w[xdg-open x-www-browser firefox opera mozilla netscape].find { |comm| which comm }

  abort('ERROR: no web browser detected') unless browser
  Array(browser) << url
end

# which('ruby') #=> /usr/bin/ruby
def which cmd
  exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
  ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
    exts.each { |ext|
      exe = "#{path}/#{cmd}#{ext}"
      return exe if File.executable? exe
    }
  end
  return nil
end