Ruby testコマンド じゃんけん

じゃんけんのプログラムのテストを実行

1.テストする、じゃんけんのプログラム

参照
https://qiita.com/ktpnobu/items/a8525f8cceddd486c219

#Rock-Paper-Scissors
#0-1-2

p 'rock-paper-scissors'
player=gets

a=0


if player=="rock"
    player_hand=0
    a=1
elsif player=="paper"
    player_hand=1
    a=1
elsif player=="scissors" 
    player_hand=2
    a=1
end


program_hand=rand(3)


if program_hand==0
    program="rock"
elsif program_hand==1
    program="paper"
elsif program_hand==2
    program="scissors"
end


if a==0
    p 'one more please'
if player_hand==program_hand
    'draw'
elsif (player_hand==0 and program_hand==2) or (player_hand==1 and program_hand==0) or (player_hand==2 and program_hand==1) 
    'you win'
else 
    'you lose'
end

p "player",player,"program",program

このプログラムの勝敗の部分について、test実行

2.test/unit

test/unitの読み込み

require 'test/unit'

3.引数から答えをだす関数を定義←これが正しいのかテストする

今回、じゃんけんの勝敗のテストなので、二つの手を引数とし、勝敗が正しく表示されるか

class Rock_paper_scissors
     def self.hantei(player_hand,program_hand)
            #ここにプログラムを書く
     end
end

player_handとprogram_handの２値が決まれば、正しい勝敗が出る(であろう)関数である
↑これが本当に正しいのかをtestするイメージ

関数の中身

if player_hand==program_hand
    'draw'
elsif (player_hand==0 and program_hand==2) or (player_hand==1 and program_hand==0) or (player_hand==2 and program_hand==1) 
    'you win'
else 
    'you lose'
end

↑player_handとprogram_handの２つから、結果を出すもの
上二つをまとめると、

class Rock_paper_scissors
     def self.hantei(player_hand,program_hand)


if player_hand==program_hand
    'draw'
elsif (player_hand==0 and program_hand==2) or (player_hand==1 and program_hand==0) or (player_hand==2 and program_hand==1) 
    'you win'
else 
    'you lose'
end

     end
end

4.検証プログラム

２つの引数からでた値は本当に正しいのか検証するために、
すべての出力とその結果を書いたプログラムを作る

class TestRock_paper_scissors < Test::Unit::TestCase
  def test_Rock_paper_scissors
    assert_equal('draw', Rock_paper_scissors.hantei(0, 0))
    assert_equal('draw', Rock_paper_scissors.hantei(1, 1))
    assert_equal('draw', Rock_paper_scissors.hantei(2,2))
    assert_equal('you win', Rock_paper_scissors.hantei(1, 0))
    assert_equal('you win', Rock_paper_scissors.hantei(2, 1))
    assert_equal('you win', Rock_paper_scissors.hantei(0, 2))
    assert_equal('you lose', Rock_paper_scissors.hantei(2, 0))
    assert_equal('you lose', Rock_paper_scissors.hantei(0, 1))
    assert_equal('you lose', Rock_paper_scissors.hantei(1, 2))
  end
end

5.まとめ

require 'test/unit'

class Rock_paper_scissors
def self.hantei(player_hand,program_hand)



if player_hand==program_hand
    'draw'
elsif (player_hand==0 and program_hand==2) or (player_hand==1 and program_hand==0) or (player_hand==2 and program_hand==1) 
    'you win'
else 
    'you lose'
end

end
end

#Rock-Paper-Scissors
#0-1-2

class TestRock_paper_scissors < Test::Unit::TestCase
  def test_Rock_paper_scissors
    assert_equal('draw', Rock_paper_scissors.hantei(0, 0))
    assert_equal('draw', Rock_paper_scissors.hantei(1, 1))
    assert_equal('draw', Rock_paper_scissors.hantei(2,2))
    assert_equal('you win', Rock_paper_scissors.hantei(1, 0))
    assert_equal('you win', Rock_paper_scissors.hantei(2, 1))
    assert_equal('you win', Rock_paper_scissors.hantei(0, 2))
    assert_equal('you lose', Rock_paper_scissors.hantei(2, 0))
    assert_equal('you lose', Rock_paper_scissors.hantei(0, 1))
    assert_equal('you lose', Rock_paper_scissors.hantei(1, 2))
  end
end

6.参考文献