Jasmine：在测试中添加Lodash [英] Jasmine: Adding Lodash to Testing

问题描述

我在我的应用程序/组件中使用lodash。 Jasmine抱怨：

I'm using lodash in my application/component. Jasmine is complaining:

失败：无法读取未定义的属性'eq'

Failed: Cannot read property 'eq' of undefined

我添加了，lodash到我的karma.conf

I've added, lodash to my karma.conf

例如：{pattern：'。/ node_modules / lodash / lodash.min.js'，包括：true，watched：false}

such as:{ pattern: './node_modules/lodash/lodash.min.js', included: true, watched: false }

仍然有问题，包含lodash的正确方法是什么？

Still getting the issue, what is the correct way of including lodash?

推荐答案

<我通过将这些行添加到main.ts解决了这个问题：

I solved this problem by adding these lines to "main.ts":

//...

import _ from 'lodash';

declare global {
  const _: _.LoDashStatic;
}

//...

此外，我将lodash添加到karma.conf.js：

Also, I added lodash to karma.conf.js:

module.exports = function(config) {
    config.set({
          basePath: '',
          frameworks: ['jasmine', '@angular/cli'],
          files: [
            'node_modules/lodash/lodash.js'
          ],
          //...

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