module Tests
	include Integration

	class TestExecute < Test::Unit::TestCase
		def test_default_execution_case
			request = Integration::Request.new(registration, card)
			response = Transaction.run!(request)
			# Do something with the response
		end
	end
end

module Integration

	class Transaction
		def run!(request)
			@connection = Connection.new
			result = @connection.send_request!(request.to_xml())
			check_errors(result)
		end

		private
		def check_errors(result)
			unless result == Net::HTTPSuccess
				raise "Impossível contactar o servidor"
			end
			result
		end
	end

	class Request
		def initialize(registration, card)
			@registration = registration
			@card = card
		end

		def to_xml
			xml_builder("requisicao-transacao") do |xml|
				xml.numero registration.id
				xml.valor registration.training_class.price.to_i * 100
				xml.moeda "986"
				# Builds the whole XML...
		end
	end

	class Response
		def initialize(xml)
			map={}
			xml.each do |element|
				element_map = {}
				# Parses the xml and defines attributes' values
				map.merge!(element.name => element_map)
		end
	end
end