如何模拟第三方React Native NativeModules? [英] How to mock third party React Native NativeModules?
本文介绍了如何模拟第三方React Native NativeModules?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
一个组件正在导入一个包含本机模块的库.这是一个人为的例子:
A component is importing a library that includes a native module. Here is a contrived example:
import React from 'react';
import { View } from 'react-native';
import { Answers } from 'react-native-fabric';
export default function MyTouchComponent({ params }) {
return <View onPress={() => { Answers.logContentView() }} />
}
这是react-native-fabric
中Answers
的相关部分:
var { NativeModules, Platform } = require('react-native');
var SMXAnswers = NativeModules.SMXAnswers;
在摩卡测试中导入此组件时,由于SMXAnswers
为undefined
,因此失败:
When importing this component in a mocha test, this fails on account that SMXAnswers
is undefined
:
如何模拟SMXAnswers
或react-native-fabric
,以使其不会损坏并允许您测试组件?
How do you mock SMXAnswers
or react-native-fabric
so that it doesn't break and allows you to test your components?
ps:您可以看到完整设置和组件我正在尝试在GitHub上进行测试
p.s.: you can see the full setup and the component I'm trying to test on GitHub.
推荐答案
使用mockery
模拟任何本地模块,如下所示:
Use mockery
to mock any native modules like so:
import mockery from 'mockery';
mockery.enable();
mockery.warnOnUnregistered(false);
mockery.registerMock('react-native-fabric', {
Crashlytics: {
crash: () => {},
},
});
这是完整的设置示例:
import 'core-js/fn/object/values';
import 'react-native-mock/mock';
import mockery from 'mockery';
import fs from 'fs';
import path from 'path';
import register from 'babel-core/register';
mockery.enable();
mockery.warnOnUnregistered(false);
mockery.registerMock('react-native-fabric', {
Crashlytics: {
crash: () => {},
},
});
const modulesToCompile = [
'react-native',
].map((moduleName) => new RegExp(`/node_modules/${moduleName}`));
const rcPath = path.join(__dirname, '..', '.babelrc');
const source = fs.readFileSync(rcPath).toString();
const config = JSON.parse(source);
config.ignore = function(filename) {
if (!(/\/node_modules\//).test(filename)) {
return false;
} else {
const matches = modulesToCompile.filter((regex) => regex.test(filename));
const shouldIgnore = matches.length === 0;
return shouldIgnore;
}
}
register(config);
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