大家好！
我开玩笑有问题。 我想用玩笑来测试view.js应用程序。 该应用程序已经非常先进。
我创建了一个非常简单的测试以了解操作，但是它始终会向我返回错误。
Jdbc这是我的配置状态：
package.json
FAIL test/unit/specs/sum.test.js
● Test suite failed to run
at createDescriptor (node_modules/@babel/core/lib/config/config-descriptors.js:178:11)
at items.map (node_modules/@babel/core/lib/config/config-descriptors.js:109:50)
at Array.map (<anonymous>)
at createDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:109:29)
at createPresetDescriptors (node_modules/@babel/core/lib/config/config-descriptors.js:101:10)
at presets (node_modules/@babel/core/lib/config/config-descriptors.js:47:19)
at mergeChainOpts (node_modules/@babel/core/lib/config/config-chain.js:320:26)
at node_modules/@babel/core/lib/config/config-chain.js:283:7
at buildRootChain (node_modules/@babel/core/lib/config/config-chain.js:120:22)
at loadPrivatePartialConfig (node_modules/@babel/core/lib/config/partial.js:85:55)
部分：
scripts "scripts": {
"dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
"start": "npm run dev",
"unit": "cross-env BABEL_ENV=test karma start test/unit/karma.conf.js --single-run",
"e2e": "node test/e2e/runner.js",
"test": "jest",
"lint": "eslint --ext .js,.vue src test/unit test/e2e/specs",
"build": "node build/build.js"
}
部分：
Jest "jest": {
"moduleFileExtensions": [
"js",
"json",
"vue"
],
"transform": {
".*\\.(vue)$": "vue-jest",
"^.+\\.js$": "<rootDir>/node_modules/babel-jest"
},
"moduleNameMapper": {
"^@/(.*)$": "<rootDir>/src/$1"
}
}
部分：
devDependencies} }
要测试的功能
文件名"devDependencies": {
"@vue/test-utils": "^1.0.0-beta.29",
"autoprefixer": "^7.1.2",
"babel-core": "^6.22.1",
"babel-eslint": "^8.2.1",
"babel-helper-vue-jsx-merge-props": "^2.0.3",
"babel-jest": "^24.1.0",
"babel-loader": "^7.1.1",
"babel-plugin-istanbul": "^4.1.1",
"babel-plugin-syntax-jsx": "^6.18.0",
"babel-plugin-transform-runtime": "^6.22.0",
"babel-plugin-transform-vue-jsx": "^3.5.0",
"babel-preset-env": "^1.3.2",
"babel-preset-stage-2": "^6.22.0",
"babel-register": "^6.22.0",
"chai": "^4.1.2",
"chalk": "^2.0.1",
"chromedriver": "^2.27.2",
"copy-webpack-plugin": "^4.0.1",
"cross-env": "^5.0.1",
"cross-spawn": "^5.0.1",
"css-loader": "^0.28.11",
"eslint": "^4.15.0",
"eslint-config-standard": "^10.2.1",
"eslint-friendly-formatter": "^3.0.0",
"eslint-loader": "^1.7.1",
"eslint-plugin-import": "^2.7.0",
"eslint-plugin-node": "^5.2.0",
"eslint-plugin-promise": "^3.4.0",
"eslint-plugin-standard": "^3.0.1",
"eslint-plugin-vue": "^4.0.0",
"extract-text-webpack-plugin": "^3.0.0",
"file-loader": "^1.1.4",
"friendly-errors-webpack-plugin": "^1.6.1",
"html-webpack-plugin": "^2.30.1",
"inject-loader": "^3.0.0",
"jest": "^24.1.0",
"karma": "^1.4.1",
"karma-coverage": "^1.1.1",
"karma-mocha": "^1.3.0",
"karma-phantomjs-launcher": "^1.0.2",
"karma-phantomjs-shim": "^1.4.0",
"karma-sinon-chai": "^1.3.1",
"karma-sourcemap-loader": "^0.3.7",
"karma-spec-reporter": "0.0.31",
"karma-webpack": "^2.0.2",
"mocha": "^3.2.0",
"nightwatch": "^0.9.12",
"node-notifier": "^5.1.2",
"optimize-css-assets-webpack-plugin": "^3.2.0",
"ora": "^1.2.0",
"phantomjs-prebuilt": "^2.1.14",
"portfinder": "^1.0.13",
"postcss-import": "^11.0.0",
"postcss-loader": "^2.0.8",
"postcss-url": "^7.2.1",
"rimraf": "^2.6.0",
"selenium-server": "^3.0.1",
"semver": "^5.3.0",
"shelljs": "^0.7.6",
"sinon": "^4.0.0",
"sinon-chai": "^2.8.0",
"style-loader": "^0.20.3",
"stylus": "^0.54.5",
"stylus-loader": "^3.0.2",
"uglifyjs-webpack-plugin": "^1.1.1",
"url-loader": "^0.5.8",
"vue-jest": "^3.0.3",
"vue-loader": "^13.3.0",
"vue-style-loader": "^3.0.1",
"vue-template-compiler": "^2.5.2",
"webpack": "^3.6.0",
"webpack-bundle-analyzer": "^2.9.0",
"webpack-dev-server": "^2.9.1",
"webpack-merge": "^4.1.0"
sum.js必须测试该功能的文件
文件export default function sum (a, b) {
return a + b
}
sum.test.js文件结构等等
import sum from '../../../src/components/sum'
describe('sum', () => {
it('create sum of 2 numbrers', () => {
expect(sum(15, 8)).toBe(23)
})
})
答案 0 :(得分：0)
您从未遇到过问题，所以我不知道这是否有帮助，但是：
"^.+\\.js$": "<rootDir>/node_modules/babel-jest"
这条线困扰我。如果我在自己的node_modules中本地安装babel-jest，则在node_modules/babel-jest/下有一个build文件夹，其中包含和index.js。 node_modules/babel-jest下没有可执行文件。也许这就是问题的根源。
我会尝试：
“ ^。+ \。js $”：“ babel-jest”
如果这不起作用，我会尝试：
"^.+\\.js$": "<rootDir>/node_modules/babel-jest/build"
祝你好运！