authors_name.rb

#coding: utf-8

class AuthorsName
  def initialize
    @ignored = ["da", "de", "do", "das", "dos"]
  end

  def surname=(surname)
    @surname = surname
  end

  def surname
    @surname.unicode_upcase
  end

  def name=(name)
    @name = name
  end

  def name
    self.order_name
    @name
  end

  def order_name
    tokens = @name.split(' ')
    @name = tokens[0]
    index = 1
    if @ignored.include?(tokens[1])
      @name << " " << tokens[1]
      index = 2
    end
    self.surname = tokens.slice(index, tokens.size + 1).join(" ")
    @name = self.surname << ", " << @name
  end
end

class String
  def unicode_upcase
    s = ""
    char_map = {"á" => "Á", "à" => "À", "â" => "Â", "ã" => "Ã", "ç" => "Ç", "é" => "É", "è" => "È", "í" => "Í",
    "ó" => "Ó", "ô" => "Ô", "ú" => "Ú"}
    self.each_char do |c|
      if char_map.include? c
        s += char_map[c]
      else
        s += c.upcase
      end
    end
    s
  end
end

authors_name_spec.rb

#coding:utf-8

require File.expand_path(File.dirname(__FILE__) + '/../authors_name')

describe AuthorsName do
  before :all do  
    @author = AuthorsName.new
  end
  it 'deve retornar um sobrenome em caixa alta' do
    @author.surname = "Silva"
    @author.surname.should eql("SILVA")
  end

  it 'deve retornar um sobrenome em caixa alta na frente do nome' do
    @author.name = "Andre Silva"
    @author.name.should eql("SILVA, Andre")
  end

  it 'deve retornar dois sobrenomes em caixa alta na frente do nome' do
   @author.name = "Caio Domingos Prado"
   @author.name.should eql("DOMINGOS PRADO, Caio")
  end

  it 'deve ignorar de... como sobrenome' do
    @author.name = "Jose de Bla"
    @author.name.should eql "BLA, Jose de"
  end

  it 'deve resistir a um teste dificil' do
    @author.name = "Pedro de Alcântara Francisco Antônio João Carlos Xavier de Paula Miguel Rafael Joaquim José Gonzaga Pascoal Cipriano Serafim de Bragança e Bourbon"
    @author.name.should eql "ALCÂNTARA FRANCISCO ANTÔNIO JOÃO CARLOS XAVIER DE PAULA MIGUEL RAFAEL JOAQUIM JOSÉ GONZAGA PASCOAL CIPRIANO SERAFIM DE BRAGANÇA E BOURBON, Pedro de"
  end
end