December 2017
Intermediate to advanced
329 pages
6h 9m
Chinese
Content preview from React学习手册
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240
｜
第
10
章
"jest": {
"setupFiles": ["./ tests /global.js"],
"modulePathIgnorePatterns": ["global.js"],
"moduleNameMapper": {
"\\.(scss)$": "<rootDir>/node_modules/jest-css-modules"
}
}
这会告知
jest
使用
jest-css-modules
模块替换任何导入文件后缀为
.
scss
的文件。将上
述代码添加到
package.json
文件中后，将会避免测试程序因为导入的
.
scss
文件而无法
正确执行。
Enzyme
我们几乎已经为开始测试
React
组件做好了准备。在开始编写我们的第一个组件测试
程序之前，我们还需要在安装两个
npm
模块：
npm install enzyme react-addons-test-utils --save-dev
Enzyme(
http://airbnb.io/enzyme/
)
是
Airbnb
推出的专门用于测试
React
组件的工具。
Airbnb
需要用到
react-addons-test-utils
，它们是测试过程中用于渲染
UI
和与组件
交互的一组工具。此外，还需要用到
react-dom
，不过我们将假定用户已经安装了
react-dom
。
Enzyme
使得渲染组件和遍历被渲染的输出结果更容易。
Enzyme
并不是一个测试或者
断言框架。它为测试程序处理渲染
React
组件的任务，并为遍历子元素、验证属性、
验证 ...
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