{"id":21060,"date":"2025-10-27T03:08:46","date_gmt":"2025-10-27T03:08:46","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=21060"},"modified":"2025-10-27T03:08:46","modified_gmt":"2025-10-27T03:08:46","slug":"db-%e3%81%b8%e3%81%ae%e3%82%a2%e3%82%af%e3%82%bb%e3%82%b9%e3%82%92%e4%bc%b4%e3%81%86%e5%8d%98%e4%bd%93%e3%83%86%e3%82%b9%e3%83%88%e3%81%ae%e8%80%83%e3%81%88%e6%96%b9%e3%81%a8-go-%e3%81%ab%e3%82%88","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/21060\/","title":{"rendered":"DB \u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u4f34\u3046\u5358\u4f53\u30c6\u30b9\u30c8\u306e\u8003\u3048\u65b9\u3068 Go \u306b\u3088\u308b\u5b9f\u8df5 – Cybozu Inside Out"},"content":{"rendered":"\n<\/p>\n
\n

\u3053\u306e\u8a18\u4e8b\u306f\u3001CYBOZU SUMMER BLOG FES ’25<\/a>\u306e\u8a18\u4e8b\u3067\u3059\u3002<\/p>\n

\u30af\u30e9\u30a6\u30c9\u57fa\u76e4\u672c\u90e8\u306e\u65b0\u4e95\u3067\u3059\u3002<\/p>\n

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001DB \u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u4f34\u3046 Go \u306e\u5358\u4f53\u30c6\u30b9\u30c8\u306b\u3064\u3044\u3066\u306e\u79c1\u305f\u3061\u306e\u8003\u3048\u65b9\u3001\u305d\u3057\u3066\u305d\u308c\u3092\u5b9f\u8df5\u3059\u308b\u305f\u3081\u306b\u958b\u767a\u30fb\u516c\u958b\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

DB \u306e\u30e2\u30c3\u30af\u3068\u305d\u306e\u554f\u984c\u70b9<\/h2>\n

DB \u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u4f34\u3046 Go \u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u3069\u306e\u3088\u3046\u306b\u5358\u4f53\u30c6\u30b9\u30c8\u3057\u305f\u3044\u3068\u304d\u3001\u6700\u521d\u306b\u601d\u3044\u3064\u304f\u306e\u306f go-sqlmock<\/a> \u306a\u3069\u306e\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066 DB \u3092\u30e2\u30c3\u30af\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002
\n\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/a>\u3067\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30c6\u30b9\u30c8\u3092\u66f8\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n

package<\/span> main\n\nimport<\/span> (\n    \"fmt\"<\/span>\n    \"testing\"<\/span>\n\n    \"github.com\/DATA-DOG\/go-sqlmock\"<\/span>\n)\n\n\nfunc<\/span> TestShouldUpdateStats(t *testing.T) {\n    db, mock, err := sqlmock.New()\n    if<\/span> err != nil<\/span> {\n        t.Fatalf(\"an error '%s' was not expected when opening a stub database connection\"<\/span>, err)\n    }\n    defer<\/span> db.Close()\n\n    mock.ExpectBegin()\n    mock.ExpectExec(\"UPDATE products\"<\/span>).WillReturnResult(sqlmock.NewResult(1<\/span>, 1<\/span>))\n    mock.ExpectExec(\"INSERT INTO product_viewers\"<\/span>).WithArgs(2<\/span>, 3<\/span>).WillReturnResult(sqlmock.NewResult(1<\/span>, 1<\/span>))\n    mock.ExpectCommit()\n\n    \n    if<\/span> err = recordStats(db, 2<\/span>, 3<\/span>); err != nil<\/span> {\n        t.Errorf(\"error was not expected while updating stats: %s\"<\/span>, err)\n    }\n\n    \n    if<\/span> err := mock.ExpectationsWereMet(); err != nil<\/span> {\n        t.Errorf(\"there were unfulfilled expectations: %s\"<\/span>, err)\n    }\n}\n<\/pre>\n
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\n\u306a\u305c\u306a\u3089\u3001\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3078\u306e\u8010\u6027\u3092\u5931\u3046\u3053\u3068\u3067\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u304c\u4f4e\u4e0b\u3057\u3001\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u3092\u4fdd\u3064\u3053\u3068\u3082\u96e3\u3057\u304f\u306a\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n
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\n\u3053\u3053\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u306e\u305f\u3081\u306b\u30af\u30a8\u30ea\u3092\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3057\u305f\u308a\u3001\u53ef\u8aad\u6027\u5411\u4e0a\u306e\u305f\u3081\u306b\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3057\u305f\u3044\u3068\u3057\u307e\u3059\u3002<\/p>\n
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\u5b9f DB \u3092\u7528\u3044\u305f\u30c6\u30b9\u30c8<\/h2>\n
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\u5b9f\u969b\u306e DB \u3092\u4f7f\u3044\u3064\u3064\u4e26\u884c\u3057\u3066\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u3001\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3054\u3068\u306b\u30b9\u30ad\u30fc\u30de\u3092\u5206\u3051\u308b\u65b9\u6cd5\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059 *1<\/a>\u3002<\/p>\n
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\u3053\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f SetupDatabase<\/code> \u3068\u3044\u3046\u95a2\u6570\u3092\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u4e26\u884c\u3057\u3066\u5b9f\u884c\u3059\u308b\u30c6\u30b9\u30c8\u306e\u305f\u3081\u306e DB \u304c\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3055\u308c\u307e\u3059\u3002<\/p>\n