t/test-custodian-util-dns.rb


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#!/usr/bin/ruby1.8 -I./lib/ -I../lib/


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


#
# 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

    #
    # IPv6 lookup
    #
    details = Custodian::Util::DNS.hostname_to_ip( "bytemark.co.uk" )
    assert( details == "212.110.161.236" )

    #
    # IPv4 lookup
    #
    details = Custodian::Util::DNS.hostname_to_ip( "www.bytemark.co.uk" )
    assert( details == "212.110.161.236" )

    #
    # 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( "2001:41c8:2::5" )
    assert( details =~ /bytemark.co.uk/i )

    #
    # IPv4 lookup
    #
    details = Custodian::Util::DNS.ip_to_hostname( "212.110.161.236" )
    assert( details =~ /bytemark.co.uk/i )

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

end