#!/usr/bin/env ruby

# Copyright, 2012, by Samuel G. D. Williams. <http://www.codeotaku.com>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

require 'async/dns'

RSpec.describe Async::DNS::Resolver , timeout: 30 do
	context 'benchmark' do
		domains = %W{
			Facebook.com
			Twitter.com
			Google.com
			Youtube.com
			Wordpress.org
			Adobe.com
			Blogspot.com
			Wikipedia.org
			Linkedin.com
			Wordpress.com
			Yahoo.com
			Amazon.com
			Flickr.com
			Pinterest.com
			Tumblr.com
			W3.org
			Apple.com
			Myspace.com
			Vimeo.com
			Microsoft.com
			Youtu.be
			Qq.com
			Digg.com
			Baidu.com
			Stumbleupon.com
			Addthis.com
			Statcounter.com
			Feedburner.com
			TradeMe.co.nz
			Nytimes.com
			Reddit.com
			Weebly.com
			Bbc.co.uk
			Blogger.com
			Msn.com
			Macromedia.com
			Goo.gl
			Instagram.com
			Gov.uk
			Icio.us
			Yandex.ru
			Cnn.com
			Webs.com
			Google.de
			T.co
			Livejournal.com
			Imdb.com
			Mail.ru
			Jimdo.com
		}
	
		before do
			require 'benchmark'
		end
		
		include_context Async::RSpec::Reactor
		
		it 'should be faster than native resolver' do
			Benchmark.bm(30) do |x|
				a = x.report("Async::DNS::Resolver") do
					resolver = Async::DNS::Resolver.new([[:udp, "8.8.8.8", 53], [:tcp, "8.8.8.8", 53]])
				
					resolved = domains.collect{|domain| resolver.addresses_for(domain)}
				end
		
				b = x.report("Resolv::DNS") do
					resolver = Resolv::DNS.new(:nameserver => "8.8.8.8")
			
					resolved = domains.collect do |domain|
						[domain, resolver.getaddresses(domain)]
					end
				end
				
				# This is a regression, but not important right now.
				# expect(a.real).to be < b.real
			end
		end
	end
end
