编码在jest.js中不被识别
我有一个问题，使用node-mysql2testing项目，反应，续集和笑话。 这个问题只发生在testing过程中。
Encoding not recognized: 'cesu8' (searched as: 'cesu8') at Object.getCodec (project/node_modules/mysql2/node_modules/iconv-lite/lib/index.js:106:23) at Object.getDecoder (project/node_modules/mysql2/node_modules/iconv-lite/lib/index.js:122:23) at Object.<anonymous>.exports.decode (project/node_modules/mysql2/lib/parsers/string.js:9:23) at Packet.Object.<anonymous>.Packet.readNullTerminatedString (project/node_modules/mysql2/lib/packets/packet.js:373:23) at Function.Object.<anonymous>.Handshake.fromPacket (project/node_modules/mysql2/lib/packets/handshake.js:18:31) at ClientHandshake.Object.<anonymous>.ClientHandshake.handshakeInit (project/node_modules/mysql2/lib/commands/client_handshake.js:98:38) at ClientHandshake.Object.<anonymous>.Command.execute (project/node_modules/mysql2/lib/commands/command.js:40:20) at Connection.Object.<anonymous>.Connection.handlePacket (project/node_modules/mysql2/lib/connection.js:515:28) at PacketParser.onPacket (project/node_modules/mysql2/lib/connection.js:94:16) at PacketParser.executeStart (project/node_modules/mysql2/lib/packet_parser.js:77:14) at Socket.<anonymous> (project/node_modules/mysql2/lib/connection.js:102:29) 这是mysql2做dynamic懒惰编码所导致的问题，Jest不能处理这个问题。 看看用户在这里提出的几个解决方法：
将此片段添加到setupTestFrameworkScriptFile
require('mysql2/node_modules/iconv-lite').encodingExists('foo');
或者在你的代码的早些时候：
import iconv from 'iconv-lite'; import encodings from 'iconv-lite/encodings'; iconv.encodings = encodings;