{"id":16785,"date":"2025-06-06T16:00:12","date_gmt":"2025-06-06T07:00:12","guid":{"rendered":"https:\/\/www.ecomottblog.com\/?p=16785"},"modified":"2025-06-06T16:48:16","modified_gmt":"2025-06-06T07:48:16","slug":"jest%e3%82%92%e7%94%a8%e3%81%84%e3%81%a6%e3%83%a6%e3%83%8b%e3%83%83%e3%83%88%e3%83%86%e3%82%b9%e3%83%88%e3%82%92%e8%a1%8c%e3%81%a3%e3%81%9f%e8%a9%b1","status":"publish","type":"post","link":"https:\/\/www.ecomottblog.com\/?p=16785","title":{"rendered":"Jest\u3092\u7528\u3044\u3066\u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u3092\u884c\u3063\u305f\u8a71"},"content":{"rendered":"

\u3053\u3093\u306b\u3061\u306f\uff01\u30af\u30e9\u30a6\u30c9\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u90e8\u306e\u5317\u5cf6\u3067\u3059\u3002<\/p>\n

\u6625\u5148\u306b\u643a\u308f\u3063\u3066\u3044\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u3066\u3001JavaScript\u3067\u66f8\u3044\u305fWeb\u30b5\u30a4\u30c8\u306e\u4e00\u90e8\u3092Jest\u3092\u4f7f\u3063\u3066\u5358\u4f53\u30c6\u30b9\u30c8\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u4eca\u56de\u306f\u3001\u305d\u3093\u306a\u7d4c\u9a13\u304b\u3089Jest\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u304b\u3089\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u3001\u305d\u3057\u3066\u5b9f\u969b\u306b\u4f7f\u7528\u3057\u305f\u611f\u60f3\u306b\u3064\u3044\u3066\u304a\u8a71\u3057\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\uff01<\/p>\n

Jest\u3068\u306f<\/h2>\n

Jest\u3068\u306f\u3001JavaScript\u306e\u30c6\u30b9\u30c8\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u4e00\u3064\u3067\u3059\u3002\u8907\u96d1\u306a\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u306a\u304f\u3001\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u3070\u3001\u8ab0\u3067\u3082\u30c6\u30b9\u30c8\u3092\u884c\u3048\u308b\u3053\u3068\u304c\u9b45\u529b\u3067\u3059\u3002
\n\u4eca\u56de\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4f5c\u6210\u3057\u305fWeb\u30b5\u30a4\u30c8\u306b\u3064\u3044\u3066\u3001\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u62c5\u4fdd\u3084\u3001\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u3001\u95a2\u6570\u5358\u4f4d\u3067\u30c6\u30b9\u30c8\u3092\u884c\u3048\u308bJest\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002
\n\u95a2\u6570\u5358\u4f4d\u3067\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u4f5c\u308b\u3053\u3068\u3067\u3001\u65e9\u671f\u306b\u30d0\u30b0\u306e\u691c\u51fa\u3001\u4fee\u6b63\u3092\u884c\u3046\u3053\u3068\u304c\u53ef\u80fd\u3067\u3001\u6761\u4ef6\u5206\u5c90\u7b49\u306e\u30ed\u30b8\u30c3\u30af\u3082\u7db2\u7f85\u7684\u306b\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u4eca\u56de\u3084\u308a\u305f\u3044\u3053\u3068<\/h2>\n

\u4eca\u56de\u306f\u3001\u6e21\u3055\u308c\u305f\u30c6\u30b9\u30c8\u306e\u70b9\u6570\u3092\u9069\u5207\u306a\u6210\u7e3e\u8a55\u4fa1\u30b0\u30eb\u30fc\u30d7\u306b\u5206\u985e\u3057\u3001\u6210\u7e3e\u8a55\u4fa1\u30b0\u30eb\u30fc\u30d7\u3092\u8fd4\u3059\u95a2\u6570”getScoreGroup”\u306e\u30c6\u30b9\u30c8\u3092\u884c\u3044\u307e\u3059\u3002\u6210\u7e3e\u8a55\u4fa1\u30b0\u30eb\u30fc\u30d7\u306e\u5b9a\u7fa9\u3068\u3001\u95a2\u6570\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\/\/\u6210\u7e3e\u8a55\u4fa1\u306e\u30e9\u30d9\u30eb\nconst SCORE_GROUP_LABELS = [\"E\", \"D\", \"C\", \"B\", \"A\", \"S\"];\n\n\/\/ \u6210\u7e3e\u8a55\u4fa1\u30b0\u30eb\u30fc\u30d7\u3092\u53d6\u5f97\u3059\u308b\u95a2\u6570\nfunction getScoreGroup(score) {\n  if (score < 50) return SCORE_GROUP_LABELS[0];\n  if (score < 60) return SCORE_GROUP_LABELS[1];\n  if (score < 70) return SCORE_GROUP_LABELS[2];\n  if (score < 80) return SCORE_GROUP_LABELS[3];\n  if (score < 90) return SCORE_GROUP_LABELS[4];\n  return SCORE_GROUP_LABELS[5];\n}<\/pre>\n
\u5404\u6210\u7e3e\u8a55\u4fa1\u30b0\u30eb\u30fc\u30d7\u306b\u5206\u985e\u3059\u308b\u969b\u306b\u7528\u3044\u308b\u5883\u754c\u5024\u304c\u3001\u6b63\u5e38\u306a\u306e\u304b\u3092Jest\u3092\u7528\u3044\u3066\u30c6\u30b9\u30c8\u3057\u305f\u3044\u3067\u3059\u3002
\n\u7121\u4e8b\u3001\u5883\u754c\u5024\u901a\u308a\u306b\u5206\u985e\u3067\u304d\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u308c\u3070\u6210\u529f\u3067\u3059\uff01\uff01<\/p>\n
\u6e96\u5099<\/h2>\n
\u74b0\u5883\u69cb\u7bc9<\/h3>\n
1.Node.js\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u3053\u3068
\n2.npm \u307e\u305f\u306f yarn\u304c\u4f7f\u7528\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068<\/p>\n
\u307e\u305a\u306f\u3001\u9069\u5f53\u306a\u5834\u6240\u306b”score-group-test”\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3001\u4f5c\u6210\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u79fb\u52d5\u3057\u307e\u3059<\/p>\n
mkdir score-group-test\ncd score-group-test<\/pre>\n
\u8a72\u5f53\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185(score-group-test)\u3067\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u521d\u671f\u5316\u3057\u3066\u304b\u3089Jest\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/p>\n
npm init -y\nnpm install --save-dev jest<\/pre>\n
\u6b21\u306bpackage.json\u306escript\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u30c6\u30b9\u30c8\u30b3\u30de\u30f3\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n
{ \n    \"scripts\": {\n        \"test\": \"jest\" \n    } \n}<\/pre>\n
\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306e\u4f5c\u6210<\/h3>\n
\u30c6\u30b9\u30c8\u5bfe\u8c61\u30d5\u30a1\u30a4\u30eb”Score.js”\u3092\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30eb\u30fc\u30c8\u306b\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
\/\/\u6210\u7e3e\u8a55\u4fa1\u306e\u30e9\u30d9\u30eb\nconst SCORE_GROUP_LABELS = [\"E\", \"D\", \"C\", \"B\", \"A\", \"S\"];\n\n\/\/ \u6210\u7e3e\u8a55\u4fa1\u30b0\u30eb\u30fc\u30d7\u3092\u53d6\u5f97\u3059\u308b\u95a2\u6570\nfunction getScoreGroup(score) {\n  if (score < 50) return SCORE_GROUP_LABELS[0];\n  if (score < 60) return SCORE_GROUP_LABELS[1];\n  if (score < 70) return SCORE_GROUP_LABELS[2];\n  if (score < 80) return SCORE_GROUP_LABELS[3];\n  if (score < 90) return SCORE_GROUP_LABELS[4];\n\n  return SCORE_GROUP_LABELS[5];\n}\n\nmodule.exports = {getScoreGroup};<\/pre>\n
\u5883\u754c\u5024\u30c6\u30b9\u30c8\u3092\u884c\u3046\u305f\u3081\u306e\u30c6\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
\/\/ Score.test.js\n\nconst { getScoreGroup } = require('.\/Score');\n\n  \n\ndescribe('getScoreGroup\u95a2\u6570\u306e\u5883\u754c\u5024\u30c6\u30b9\u30c8', () => {\n\n  \/\/ E\u8a55\u4fa1\u306e\u5883\u754c\u5024\u30c6\u30b9\u30c8 (0-49\u70b9)\n  test('0\u70b9\u306fE\u8a55\u4fa1', () => {\n    expect(getScoreGroup(0)).toBe('E');\n  });\n\n  test('49\u70b9\u306fE\u8a55\u4fa1', () => {\n    expect(getScoreGroup(49)).toBe('E');\n  });\n\n  \/\/ D\u8a55\u4fa1\u306e\u5883\u754c\u5024\u30c6\u30b9\u30c8 (50-59\u70b9)\n  test('50\u70b9\u306fD\u8a55\u4fa1', () => {\n    expect(getScoreGroup(50)).toBe('D');\n  });\n\n  test('59\u70b9\u306fD\u8a55\u4fa1', () => {\n    expect(getScoreGroup(59)).toBe('D');\n  });\n\n  \/\/ C\u8a55\u4fa1\u306e\u5883\u754c\u5024\u30c6\u30b9\u30c8 (60-69\u70b9)\n  test('60\u70b9\u306fC\u8a55\u4fa1', () => {\n    expect(getScoreGroup(60)).toBe('C');\n  });\n\n  test('69\u70b9\u306fC\u8a55\u4fa1', () => {\n    expect(getScoreGroup(69)).toBe('C');\n  });\n\n  \/\/ B\u8a55\u4fa1\u306e\u5883\u754c\u5024\u30c6\u30b9\u30c8 (70-79\u70b9)\n  test('70\u70b9\u306fB\u8a55\u4fa1', () => {\n    expect(getScoreGroup(70)).toBe('B');\n  });\n\n  test('79\u70b9\u306fB\u8a55\u4fa1', () => {\n    expect(getScoreGroup(79)).toBe('B');\n  });\n\n  \/\/ A\u8a55\u4fa1\u306e\u5883\u754c\u5024\u30c6\u30b9\u30c8 (80-89\u70b9)\n  test('80\u70b9\u306fA\u8a55\u4fa1', () => {\n    expect(getScoreGroup(80)).toBe('A');\n  });\n\n  test('89\u70b9\u306fA\u8a55\u4fa1', () => {\n    expect(getScoreGroup(89)).toBe('A');\n  });\n\n  \/\/ S\u8a55\u4fa1\u306e\u5883\u754c\u5024\u30c6\u30b9\u30c8 (90-100\u70b9)\n  test('90\u70b9\u306fS\u8a55\u4fa1', () => {\n    expect(getScoreGroup(90)).toBe('S');\n  });\n\n  test('100\u70b9\u306fS\u8a55\u4fa1', () => {\n    expect(getScoreGroup(100)).toBe('S');\n  });\n\n});<\/pre>\n
\u3053\u3053\u307e\u3067\u4f5c\u696d\u3092\u884c\u3044\u3001\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u69cb\u6210\u3082\u4e0b\u8a18\u3067\u3042\u308c\u3070\u6e96\u5099\u5b8c\u4e86\u3067\u3059\uff01<\/p>\n
score-group-test\/\n\u2502\n\u251c\u2500\u2500 package.json           # npm\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\uff08Jest\u306e\u8a2d\u5b9a\u3092\u542b\u3080\uff09\n\u251c\u2500\u2500 package-lock.json      # \u4f9d\u5b58\u95a2\u4fc2\u306e\u30ed\u30c3\u30af\u30d5\u30a1\u30a4\u30eb\n\u2502\n\u251c\u2500\u2500 node_modules\/          # \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f\u30d1\u30c3\u30b1\u30fc\u30b8\n\u2502   \u2514\u2500\u2500 ...                # \u69d8\u3005\u306a\u4f9d\u5b58\u30d1\u30c3\u30b1\u30fc\u30b8\n\u2502\n\u251c\u2500\u2500 Score.js                 # \u30c6\u30b9\u30c8\u5bfe\u8c61\u306e\u6210\u7e3e\u8a55\u4fa1\u30b0\u30eb\u30fc\u30d7\u5224\u5b9a\u95a2\u6570\n\u2514\u2500\u2500 Score.test.js            # Jest\u306e\u6210\u7e3e\u8a55\u4fa1\u30b0\u30eb\u30fc\u30d7\u5224\u5b9a\u30c6\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb<\/pre>\n
\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u306e\u5b9f\u884c<\/h2>\n
\u3055\u3042\uff01\u3042\u3068\u306f\u4e0b\u8a18\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u30c6\u30b9\u30c8\u3092\u884c\u3046\u3060\u3051\u3067\u3059\uff01\uff01<\/p>\n
npm test<\/pre>\n
\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5b9f\u884c\u7d50\u679c\u304c\u51fa\u529b\u3055\u308c\u308c\u3070\u5883\u754c\u5024\u30c6\u30b9\u30c8\u6210\u529f\u3067\u3059\uff01<\/p>\n
\"\"<\/p>\n
 <\/p>\n
\u4f7f\u7528\u3057\u3066\u307f\u305f\u611f\u60f3<\/h2>\n
\u5b9f\u969b\u306bJest\u3092\u4f7f\u3063\u3066\u95a2\u6570\u5358\u4f4d\u306e\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u307f\u3066\u3001\u6539\u3081\u3066\u300c\u3069\u306e\u3088\u3046\u306a\u5165\u529b\u306b\u5bfe\u3057\u3066\u3001\u3069\u306e\u3088\u3046\u306a\u51fa\u529b\u304c\u671f\u5f85\u3055\u308c\u308b\u304b\u300d\u3092\u660e\u78ba\u306b\u8003\u3048\u308b\u529b\u304c\u6c42\u3081\u3089\u308c\u308b\u3053\u3068\u3092\u5b9f\u611f\u3057\u307e\u3057\u305f\u3002\u7279\u306b\u3001\u5883\u754c\u5024\u306e\u3088\u3046\u306a\u898b\u843d\u3068\u3057\u3084\u3059\u3044\u6761\u4ef6\u306b\u3064\u3044\u3066\u3082\u4e01\u5be7\u306b\u30c6\u30b9\u30c8\u3092\u66f8\u304f\u3053\u3068\u3067\u3001\u30ed\u30b8\u30c3\u30af\u306e\u6f0f\u308c\u3084\u4e0d\u5177\u5408\u306e\u65e9\u671f\u767a\u898b\u306b\u3064\u306a\u304c\u308b\u3068\u3044\u3046\u5b9f\u611f\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n
\u307e\u305f\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u95a2\u6570\u3067\u3082\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3092\u4e01\u5be7\u306b\u4f5c\u6210\u3059\u308b\u306b\u306f\u4e00\u5b9a\u306e\u52b4\u529b\u304c\u304b\u304b\u308b\u305f\u3081\u3001\u300c\u66f8\u3051\u3070\u7d42\u308f\u308a\u300d<\/strong>\u3067\u306f\u306a\u304f\u300c\u3069\u3046\u4fdd\u5b88\u3057\u3084\u3059\u304f\u66f8\u304f\u304b\u300d<\/strong>\u3092\u610f\u8b58\u3059\u308b\u3053\u3068\u306e\u5927\u5207\u3055\u3092\u5b66\u3073\u307e\u3057\u305f\u3002\u30c6\u30b9\u30c8\u3092\u66f8\u304f\u3053\u3068\u3067\u5b89\u5fc3\u611f\u304c\u5f97\u3089\u308c\u308b\u53cd\u9762\u3001\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u81ea\u4f53\u306e\u8cea\u3082\u307e\u305f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u540c\u69d8\u306b\u91cd\u8981\u3067\u3042\u308b\u3068\u3044\u3046\u610f\u8b58\u3092\u4eca\u5f8c\u3082\u6301\u3061\u7d9a\u3051\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u3055\u3089\u306b\u6625\u5148\u3067\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001GitHub Copilot\u3082\u7a4d\u6975\u7684\u306b\u6d3b\u7528\u3057\u307e\u3057\u305f\u3002\u95a2\u6570\u306e\u4ed5\u69d8\u3084\u30c6\u30b9\u30c8\u30d1\u30bf\u30fc\u30f3\u3092\u3042\u308b\u7a0b\u5ea6\u66f8\u304d\u59cb\u3081\u308b\u3068\u3001Copilot\u304c\u88dc\u5b8c\u5019\u88dc\u3068\u3057\u3066\u6b21\u306b\u66f8\u304f\u3079\u304d\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3092\u63d0\u6848\u3057\u3066\u304f\u308c\u308b\u305f\u3081\u3001\u30c6\u30b9\u30c8\u89b3\u70b9\u306e\u629c\u3051\u6f0f\u308c\u306b\u6c17\u3065\u3051\u305f\u308a\u3001\u52b9\u7387\u3088\u304f\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u9032\u3081\u3089\u308c\u308b\u5834\u9762\u304c\u591a\u3005\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n
AI\u30c4\u30fc\u30eb\u306f\u88dc\u52a9\u7684\u306a\u7acb\u5834\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u4eba\u306e\u5224\u65ad\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u958b\u767a\u52b9\u7387\u30fb\u54c1\u8cea\u306e\u4e21\u65b9\u3092\u5e95\u4e0a\u3052\u3067\u304d\u308b\u3068\u3044\u3046\u70b9\u3067\u3001\u4f75\u305b\u3066\u5229\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308c\u3070\u3068\u611f\u3058\u307e\u3057\u305f\u3002<\/p>\n
\u30a8\u30b3\u30e2\u30c3\u30c8\u3067\u306f\u3001\u79c1\u305f\u3061\u3068\u4e00\u7dd2\u306b\u30e2\u30ce\u3065\u304f\u308a\u3092\u3057\u3066\u3044\u304f\u4ef2\u9593\u3092\u52df\u96c6\u3057\u3066\u3044\u307e\u3059\u3002
\n\u5f0a\u793e\u306b\u5c11\u3057\u3067\u3082\u8208\u5473\u306e\u3042\u308b\u65b9\u306f\u3001\u305c\u3072\u4e0b\u8a18\u306e\u63a1\u7528\u30da\u30fc\u30b8\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n