TypeError: plugin.test is not a function when using jest, enzyme and react-16, typescript

Question

我正在将我的 React 应用程序更新到 react-16，但我的所有测试都停止了。我已经升级了 enzyme、jest-enzyme、react-dom、安装了 enzyme-adapter、创建了 setupTest.ts 酶文件、更新了我的 jestconfig.js 文件，但是我'我仍然收到错误。如果有人知道可能出了什么问题。

执行 npm ls

时没有依赖性警告（关于反应|测试）

这是我的 jestconfig

{
  "moduleDirectories": [
    "node_modules",
    "src"
  ],
  "moduleFileExtensions": [
    "ts",
    "tsx",
    "js"
  ],
  "moduleNameMapper": {
    "\.(css|scss)$": "identity-obj-proxy"
  },
  "transform": {
    ".(ts|tsx)": "<rootDir>/node_modules/ts-jest/preprocessor.js"
  },
  "testResultsProcessor": "<rootDir>/node_modules/ts-jest/coverageprocessor.js",
  "snapshotSerializers": [
    "enzyme-to-json"
  ],
  "setupTestFrameworkScriptFile":"<rootDir>/config/setupTests.ts",
  "coveragePathIgnorePatterns": ["node_modules", "__tests__"],
  "testRegex": "__tests__/.*\.test\.(ts|tsx|js)$",
  "collectCoverageFrom": ["src/**/*.{ts,tsx}"],

...rest of code

src/setupTests.ts

import 'raf/polyfill'; // <= this removes the requestAnimationFrame warning error
import * as Enzyme from 'enzyme';
import * as Adapter from 'enzyme-adapter-react-16';

Enzyme.configure({ adapter: new Adapter() });

Answer 1

正在写题，意识到错误。在 jestconfig.json

上缺少以下内容

"snapshotSerializers": [
    "enzyme-to-json/serializer" // <= this part
  ],

..rest of code

TypeError: plugin.test is not a function when using jest, enzyme and react-16, typescript

TypeError: plugin.test is not a function when using jest, enzyme and react-16, typescript

typescript

reactjs

jestjs

enzyme

react-16