如何为该方法 play_turn 编写 rspec Ruby 测试？

Question

class Game
  def start
    @player1 = Player.new("don")
    @player2 = Player.new("tum")
  end

  def player_turn
    if @turn.even? 
      puts "this is #{@player2.name}'s turn"
    else
      puts "this is #{@player1.name}'s turn"
    end
  end
end

Answer 1

我想首先你必须定义实例变量 @turn，以及它是如何递增的。此外，我建议将 Game#start 更改为#initialize，下面的测试假设了这一点。 然后你可以检查输出到标准输出的内容。

RSpec.describe Game do
  describe "#player_turn" do
    context 'when the turn is even' do
      let(:game) { Game.new }
      it "tells you it is player 2's turn" do
        expect do
          game.player_turn
        end.to output("this is tum's turn\n").to_stdout
      end
    end
  end
end