nama_exercicio.rb

# Solução rápida.
(1..100).each do |counter|
  nama_team = "#{'Nama' if counter % 5 == 0 } #{'Team' if counter % 7 == 0 }".strip
  nama_team = counter if nama_team.empty?
  puts nama_team
end

# Solução mais elegante
# Explicação: caso um novo multiplo precise ser adicionado, tanto para 'Nama' quanto para 'Team',
# será necessário apenas adicionar o novo multiplo ao Array correspondente.
class NamaTeam

  NAMA_MULTIPLES = [5]
  TEAM_MULTIPLES = [7]

  def multiple_result(number)
    nama_team = ''
    nama_team << 'Nama ' if nama_multiple? number
    nama_team << 'Team' if team_multiple? number
    nama_team = number.to_s if nama_team.empty?
    nama_team.strip
  end

  private

  def nama_multiple?(number)
    is_there_a_multiple_in_the_list?(number, NAMA_MULTIPLES)
  end

  def team_multiple?(number)
    is_there_a_multiple_in_the_list?(number, TEAM_MULTIPLES)
  end

  def is_there_a_multiple_in_the_list?(number, multiples_list)
    multiples_list.select { |multiple| number % multiple == 0 }.length > 0
  end
end

require 'minitest/autorun'

class TestNamaTeam < MiniTest::Unit::TestCase
  def setup
    @nama_team = NamaTeam.new
  end

  def test_multiples_of_5
    assert_equal "Nama", @nama_team.multiple_result(5)
    assert_equal "Nama", @nama_team.multiple_result(10)
    assert_equal "Nama", @nama_team.multiple_result(20)
    assert_equal "Nama", @nama_team.multiple_result(55)
    assert_equal "Nama", @nama_team.multiple_result(75)
    assert_equal "Nama", @nama_team.multiple_result(100)

    # 5 and 7
    refute_equal "Nama", @nama_team.multiple_result(35)
    refute_equal "Nama", @nama_team.multiple_result(70)
  end

  def test_multiples_of_7
    assert_equal "Team", @nama_team.multiple_result(7)
    assert_equal "Team", @nama_team.multiple_result(14)
    assert_equal "Team", @nama_team.multiple_result(42)
    assert_equal "Team", @nama_team.multiple_result(84)

    # 5 and 7
    refute_equal "Team", @nama_team.multiple_result(35)
    refute_equal "Team", @nama_team.multiple_result(70)
  end

  def test_multiples_of_5_and_7
    assert_equal "Nama Team", @nama_team.multiple_result(35)
    assert_equal "Nama Team", @nama_team.multiple_result(70)
  end

end

nt = NamaTeam.new
(1..100).each { |i| puts nt.multiple_result(i) }