我很难用Jest设置Vue CLI 3来显示测试范围。我已尽一切可能使它正常工作,但仍未显示任何内容:
Ran all test suites.
----------|----------|----------|----------|----------|-------------------|
File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s |
----------|----------|----------|----------|----------|-------------------|
All files | 0 | 0 | 0 | 0 | |
----------|----------|----------|----------|----------|-------------------|
=============================== Coverage summary ===============================
Statements : Unknown% ( 0/0 )
Branches : Unknown% ( 0/0 )
Functions : Unknown% ( 0/0 )
Lines : Unknown% ( 0/0 )
以下是我的配置摘录:
jest.config.js:
module.exports = {
moduleFileExtensions: [
'js',
'jsx',
'json',
'vue'
],
transform: {
'^.+\\.vue$': 'vue-jest',
'.+\\.(css|styl|less|sass|scss|svg|png|jpg|ttf|woff|woff2)$': 'jest-transform-stub',
'^.+\\.jsx?$': 'babel-jest'
},
moduleNameMapper: {
'^@/(.*)$': '<rootDir>/src/$1'
},
snapshotSerializers: [
'jest-serializer-vue'
],
testMatch: [
'**/tests/unit/**/*.spec.(js|jsx|ts|tsx)|**/__tests__/*.(js|jsx|ts|tsx)'
],
transformIgnorePatterns: ['<rootDir>/node_modules/'],
testURL: 'http://localhost/'
}
package.json:
....
"scripts": {
"test:unit": "nyc vue-cli-service test:unit"
},
"nyc": {
"check-coverage": true,
"per-file": true,
"lines": 90,
"statements": 90,
"functions": 90,
"branches": 90,
"include": [
"src/**/*.{js,vue}"
],
"exclude": [
"src/*.js"
],
"reporter": [
"lcov",
"text",
"text-summary"
],
"extension": [
".js",
".vue"
],
"verbose": true,
"cache": true,
"all": true
}
如何正确配置Vue CLI 3和Jest以显示测试覆盖率?
最佳答案
Jest有自己的覆盖工具,因此请从package.json中删除nyc
:
"scripts": {
// "test:unit": "nyc vue-cli-service test:unit" // DELETE
"test:unit": "vue-cli-service test:unit"
},
// "nyc": {...} // DELETE
要启用Jest的覆盖范围,请在jest.config.js中(根据
collectCoverage
)设置 collectCoverageFrom
和 vue-test-utils
docs:collectCoverage: true,
collectCoverageFrom: [
'src/**/*.{js,vue}',
'!src/main.js', // No need to cover bootstrap file
],
运行
yarn test:unit
应该产生如下控制台输出:GitHub demo
还要注意,Jest控制台输出仅列出包含可执行JavaScript(Vue SFC的
methods
)的文件。如果您正在使用默认的Vue CLI生成的模板,则HelloWorld.vue
不包含methods
,因此不会列出。在上面的屏幕截图中,我向HelloWorld.vue
添加了一个未使用的方法,以演示Jest的未发现行报告。关于vue.js - 如何使用jest使测试覆盖率显示Vue-cli 3中的所有vue文件,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/53249858/