使用Jest测试来自React-Router v4的链接 [英] Using Jest to test a Link from react-router v4
本文介绍了使用Jest测试来自React-Router v4的链接的处理方法,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
我正在使用jest
来测试来自react-router v4中带有<Link>
的组件.
I'm using jest
to test a component with a <Link>
from react-router v4.
我得到一个警告,指出<Link />
需要来自react-router <Router />
组件的上下文.
I get a warning that <Link />
requires the context from a react-router <Router />
component.
如何在测试中模拟或提供路由器上下文? (基本上我该如何解决此警告?)
How can I mock or provide a router context in my test? (Basically how do I resolve this warning?)
Link.test.js
import React from 'react';
import renderer from 'react-test-renderer';
import { Link } from 'react-router-dom';
test('Link matches snapshot', () => {
const component = renderer.create(
<Link to="#" />
);
let tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
运行测试时的警告:
Warning: Failed context type: The context `router` is marked
as required in `Link`, but its value is `undefined`.
推荐答案
您可以使用StaticRouter在测试中包装您的组件,以将路由器上下文放入您的组件中:
You can wrap your component in the test with the StaticRouter to get the router context into your component:
import React from 'react';
import renderer from 'react-test-renderer';
import { Link } from 'react-router-dom';
import { StaticRouter } from 'react-router'
test('Link matches snapshot', () => {
const component = renderer.create(
<StaticRouter location="someLocation" context={context}>
<Link to="#" />
</StaticRouter>
);
let tree = component.toJSON();
expect(tree).toMatchSnapshot();
});
看看反应路由器有关测试的文档
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