#!/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 'minitest/autorun'

require 'rubydns'

class MessageTest < MiniTest::Test
	def setup
	end
	
	def teardown
	end

	def hex2bin(hexstring)
		ret = "\x00" * (hexstring.length / 2)
		ret.force_encoding("BINARY")
		offset = 0
		while offset < hexstring.length
			hex_byte = hexstring[offset..(offset+1)]
			ret.setbyte(offset/2, hex_byte.to_i(16))
			offset += 2
		end
		ret
	end

	def test_good_decode
		data = hex2bin("1d008180000100080000000103777777057961686f6f03636f6d0000010001c00c000500010000012c000f0666642d667033037767310162c010c02b000500010000012c00090664732d667033c032c046000500010000003c00150e64732d616e792d6670332d6c666203776131c036c05b000500010000012c00120f64732d616e792d6670332d7265616cc06ac07c000100010000003c0004628afc1ec07c000100010000003c0004628bb495c07c000100010000003c0004628bb718c07c000100010000003c0004628afd6d0000291000000000000000")
		
		decoded = RubyDNS.decode_message(data)
		assert_equal(RubyDNS::Message, decoded.class)
		assert_equal(0x1d00, decoded.id)
		assert_equal(1, decoded.question.count)
		assert_equal(8, decoded.answer.count)
		assert_equal(0, decoded.authority.count)
		assert_equal(1, decoded.additional.count)
	end
	
	def test_bad_AAAA_length
		data = hex2bin("ea9e8180000100010000000108626169636169636e03636f6d00001c0001c00c001c00010000011e000432177b770000291000000000000000")
		
		assert_raises Resolv::DNS::DecodeError do
			RubyDNS.decode_message(data)
		end
	end
end