rsp with unit test

rsp-test.js

const assert = (a, b) => {
  if(a !== b){
    throw `${a} is must equal: ${b}`
  }
}

const rspTest = () => {
  // when you draw 가위
  assert(rsp("가위", "가위"), "tied");
  assert(rsp("가위", "바위"), "lose");
  assert(rsp("가위", "보"), "win");
  
  // when you draw 바위
  assert(rsp("바위", "가위"), "win");
  assert(rsp("바위", "바위"), "tied");
  assert(rsp("바위", "보"), "lose");
  
  // when you draw 보
  assert(rsp("보", "가위"), "lose");
  assert(rsp("보", "바위"), "win");
  assert(rsp("보", "보"), "tied");
  
  console.log("All tests passed.");
}

rspTest();

rsp.js

const map = {
  '바위': '가위',
  '가위': '보',
  '보': '바위'
};

const rsp = (a, b) => {
  if(a === b)
    return 'tied';
  if (map[a] === b)
    return 'win';
  else
    return 'lose';
};