test.rb

it 'sets the state to "gameover" when there is a winner' do
  game = Game.new
  game.state = "running"
  expect { game.winner! }.to change { game.state }.from("running").to("gameover")
end

test2.rb

it 'gives me the players current state' do
  game = Game.new
  game.player = Player.new
  
  expect(game.player_state).to eq("Started")
end