react-native-vector-icons + mocha：不变违规

Question

这是我的组件。它运行s 在 emulator/phone 上没有问题：

// mycomponent.js
import React, {Component} from 'react';
import {View} from 'react-native';
import Icon from 'react-native-vector-icons/FontAwesome';

export class MyComponent extends Component {
    // ...
    render () {
        return (
            <View>
               <Icon
                   name="check"
                   size={25}
                   color={'#62B300'}
               />
            </View>
        )
    }
}

但是当我运行这个文件中的单元测试时(mocha --recursive test/**/*.js):

// mycomponent.spec.js
import chai from 'chai';
import TestRenderer from 'react-test-renderer';
import mock from 'mock-require';
import 'react-native-mock-render/mock';
import {MyComponent} from '../app/components/MyComponent';

mock('react-native-vector-icons/FontAwesome', {});


describe('MyComponent', () => {
    it('should render', () => {
       const mycomponent = TestRenderer.create(<MyComponent>);

       return expect(mycomponent.root).to.exist;
    }
}

它抛出：

Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up defau lt and named imports.

Check the render method of MyComponent.

如果我使用 <View> 而不是 <Icon> 它会起作用，但它应该被嘲笑。我该如何解决这个问题？

Answer 1

解决了。为了使这项工作，模拟需要 return 函数 returning null 而不是对象。

mock('react-native-vector-icons/FontAwesome', () => null);

react-native-vector-icons + mocha：不变违规

react-native-vector-icons + mocha: Invariant Violation

javascript

mocha.js

react-native

react-test-renderer

react-native-vector-icons