#!/usr/bin/ruby -I./lib/ -I../lib/


require 'custodian/util/dns'
require 'test/unit'
require 'pp'


#
# Unit test for our DNS utility class.
#
#
class TestDNSUtil < Test::Unit::TestCase

  #
  # Create the test suite environment: NOP.
  #
  def setup
  end

  #
  # Destroy the test suite environment: NOP.
  #
  def teardown
  end


  #
  #  Test forward lookups
  #
  def test_lookup

    details = Custodian::Util::DNS.hostname_to_ip( 'bytemark.co.uk' )
    assert( ( details == '2001:41c9:0:1019:81::80' ) ||
            ( details == '80.68.81.80' ) )

    details = Custodian::Util::DNS.hostname_to_ip( 'www.bytemark.co.uk' )
    assert( ( details == '2001:41c9:0:1019:81::80' ) ||
            ( details == '80.68.81.80' ) )


    details = Custodian::Util::DNS.hostname_to_ip( 'ipv4.steve.org.uk' )
    assert( details == '80.68.84.103' )

    details = Custodian::Util::DNS.hostname_to_ip( 'ipv6.steve.org.uk' )
    assert( details == '2001:41c8:10b:103::10' )


    #
    # Failure case
    #
    details = Custodian::Util::DNS.hostname_to_ip( 'this.doesnot.exist' )
    assert( details.nil? )

  end


  #
  #  Test forward lookups
  #
  def test_reverse_lookup

    #
    # IPv6 lookup
    #
    details = Custodian::Util::DNS.ip_to_hostname( '2001:41c9:0:1019:81::80' )
    assert( details =~ /bytemark(-?hosting)?\.(com|eu|co\.uk)$/i )

    #
    # IPv4 lookup
    #
    details = Custodian::Util::DNS.ip_to_hostname( '80.68.81.80' )
    assert( details =~ /bytemark(-?hosting)?\.(com|eu|co\.uk)$/i )

    #
    # Bogus lookup - should return nil.
    #
    details = Custodian::Util::DNS.ip_to_hostname( '800.683.853.348' )
    assert( details.nil? )
  end

end