react native 学习笔记6

jest里面覆盖率

定义：package.json

{
  "name": "jestTest",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "jest-cli": "^22.0.4"
  },
  "scripts": {
    "test": "jest --watchAll --coverage"
  }
}

 

html的文件为：