```ruby
require 'test/unit'
require_relative 'game' 

class GameTest < Test::Unit::TestCase

  def test_gutter_game
    game = Game.new
    20.times do
      game.roll(0)
    end
    assert_equal 0, game.score
  end

  def test_all_ones
    game = Game.new
    20.times do
      game.roll(1)
    end
    assert_equal 20, game.score
  end
end
```

Refactor test to extract duplicate code
user
```ruby
require 'test/unit'
require_relative 'game' 

class GameTest < Test::Unit::TestCase

  def setup
    @game = Game.new
  end

  def roll_many(n, pins)
    n.times do
      @game.roll(pins)
    end
  end

  def test_gutter_game
    setup
    roll_many(20, 0)
    assert_equal 0, @game.score
  end

  def test_all_ones
    setup
    roll_many(20, 1)
    assert_equal 20, @game.score
  end
end
```
assistant