按題目已訂類型轉成答案記錄

來源格式與預期記錄

這是原創假設轉換例子。輸入限下列欄位的普通、無循環 JSON 形記錄，統一記錄格式及拒絕代碼由本例訂明。若換來源，先修改格式約定。

題目明列不重複非空 key、text／integer／boolean 類型及布林 required。未知答案 key、欠必答或值不合類型都拒絕。文字不可全空白，integer 用安全整數；false、0 都有效。按題目次序保存帶類型答案，沒填的選項另列 unanswered。

可修改的假設轉換個案
個案	輸入記錄（JSON）	預期輸出（JSON）
建立具類型答案	{"questions":[{"key":"name","kind":"text","required":true},{"key":"count","kind":"integer","required":false}],"answers":{"name":"Ada","count":0}}	{"ok":true,"value":{"answers":[{"key":"name","kind":"text","value":"Ada"},{"key":"count","kind":"integer","value":0}],"unanswered":[]}}
拒絕欠必需答案	{"questions":[{"key":"name","kind":"text","required":true}],"answers":{}}	{"ok":false,"error":"ANSWER_REQUIRED"}
保留可選答案未填	{"questions":[{"key":"name","kind":"text","required":true},{"key":"count","kind":"integer","required":false}],"answers":{"name":"Ada"}}	{"ok":true,"value":{"answers":[{"key":"name","kind":"text","value":"Ada"}],"unanswered":["count"]}}

下載可編輯 CSV ↓

在本機執行轉換

把完整例子以 JavaScript 模組在 Node.js 執行，內含純轉換函數、三個輸入及寫明的預期輸出，對不上便由斷言停止。拒絕個案回傳 ok=false 及代碼，不回傳半份統一記錄。

完整函數及可執行個案

import assert from 'node:assert/strict';

function questionnaireAnswers(i){
  const fail=error=>({ok:false,error});if(!i||!Array.isArray(i.questions)||!i.answers||typeof i.answers!=='object'||Array.isArray(i.answers))return fail('ANSWER_SHAPE');
  const keys=new Set(),answers=[],unanswered=[];
  for(const q of i.questions){if(!q||typeof q.key!=='string'||!q.key||keys.has(q.key)||!['text','integer','boolean'].includes(q.kind)||typeof q.required!=='boolean')return fail('QUESTION_DEFINITION');keys.add(q.key);}
  if(Object.keys(i.answers).some(k=>!keys.has(k)))return fail('ANSWER_UNKNOWN');
  for(const q of i.questions){
    if(!Object.hasOwn(i.answers,q.key)){if(q.required)return fail('ANSWER_REQUIRED');unanswered.push(q.key);continue;}
    const v=i.answers[q.key];const valid=q.kind==='text'?typeof v==='string'&&!!v.trim():q.kind==='integer'?Number.isSafeInteger(v):typeof v==='boolean';
    if(!valid)return fail('ANSWER_TYPE');answers.push({key:q.key,kind:q.kind,value:v});
  }
  return {ok:true,value:{answers,unanswered}};
}

// Original synthetic cases; expected outputs are literal records.
const cases = [
  {
    "label": "Construct typed answers",
    "input": {
      "questions": [
        {
          "key": "name",
          "kind": "text",
          "required": true
        },
        {
          "key": "count",
          "kind": "integer",
          "required": false
        }
      ],
      "answers": {
        "name": "Ada",
        "count": 0
      }
    },
    "expected": {
      "ok": true,
      "value": {
        "answers": [
          {
            "key": "name",
            "kind": "text",
            "value": "Ada"
          },
          {
            "key": "count",
            "kind": "integer",
            "value": 0
          }
        ],
        "unanswered": []
      }
    }
  },
  {
    "label": "Reject missing required answer",
    "input": {
      "questions": [
        {
          "key": "name",
          "kind": "text",
          "required": true
        }
      ],
      "answers": {}
    },
    "expected": {
      "ok": false,
      "error": "ANSWER_REQUIRED"
    }
  },
  {
    "label": "Preserve absent optional answer",
    "input": {
      "questions": [
        {
          "key": "name",
          "kind": "text",
          "required": true
        },
        {
          "key": "count",
          "kind": "integer",
          "required": false
        }
      ],
      "answers": {
        "name": "Ada"
      }
    },
    "expected": {
      "ok": true,
      "value": {
        "answers": [
          {
            "key": "name",
            "kind": "text",
            "value": "Ada"
          }
        ],
        "unanswered": [
          "count"
        ]
      }
    }
  }
];
for (const sample of cases) {
  const actual = questionnaireAnswers(sample.input);
  assert.deepEqual(actual, sample.expected);
  console.log(sample.label, JSON.stringify(actual));
}

下載可執行例子 ↓

判清邊界個案

選填 count=0 與沒有 count 有何不同？

查看參考答案

0 產生 integer 類型答案；沒填則 count 放 unanswered，不產生該答案。欠必填 name 回傳 ANSWER_REQUIRED，不補空值。

來源格式與預期記錄

在本機執行轉換

判清邊界個案

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