Jest/React - 如何在单元测试中使用全局对象？

Question

我使用带有require()的CommonJS模块,除了React,它是全局的:

// I don't want require React in every module:
// var React = require("react");

var MyComponent = React.createClass({ // React is global here
});

在MyComponent上运行单元测试时,Jest无法找到React.有没有办法告诉Jest插入一个全局的React对象？(我使用npm和gulp-browserify.)

Answer 1

适用于我,具有以下设置.

// package.json

"jest": {
  "scriptPreprocessor": "preprocessor.js",
  "unmockedModulePathPatterns": [
    "react"
  ],
  "setupEnvScriptFile": "before_test.js"
}

// preprocessor.js

var ReactTools = require('react-tools');

module.exports = {
    process: function(src) {
        return ReactTools.transform(src);
    }
};

// before_test.js

React = require("react"); // Global React object