Reactjs 如何在React native中模拟上下文使用者React元素
我没有发现任何证据表明有人以前能够解决这个问题。我有一个使用上下文的react本机组件,我想呈现该组件Reactjs 如何在React native中模拟上下文使用者React元素,reactjs,react-native,jestjs,react-context,react-test-renderer,Reactjs,React Native,Jestjs,React Context,React Test Renderer,我没有发现任何证据表明有人以前能够解决这个问题。我有一个使用上下文的react本机组件,我想呈现该组件 // ThemeContext.js import React from 'react'; export const ThemeContext = React.createContext( { color: 'white' } ); jest与react native和context一起工作吗?这个世界上有人用过这个吗? 使用jest v24.1.0、react native 0.
// ThemeContext.js
import React from 'react';
export const ThemeContext = React.createContext(
{ color: 'white' }
);
jest与react native和context一起工作吗?这个世界上有人用过这个吗?
使用jest v24.1.0、react native 0.56、react test renderer 16.0.0和react test renderer具有匹配的版本。由于上下文API是在React 16.3中引入的,因此预计,
React测试-renderer@16.0.0
不支持
元素
react测试呈现程序
应具有与react
相同的版本约束谢谢您救了我!
// MyText.js
import React, { PureComponent } from 'react';
import PropTypes from 'prop-types';
import { Text } from 'react-native';
export class MyText extends PureComponent {
static propTypes = {
children: PropTypes.node.isRequired
};
static defaultProps = {};
render() {
let text = this.props.children;
return (
<Text>
{text}
</Text>
);
}
};
// MyText.test.js
import React from 'react';
import { MyText } from "../MyText";
import { ThemeContext } from '../ThemeContext';
describe('MyText', () => {
it('should render component', () => {
const wrapper = renderer.create(
<ThemeContext.Provider value={mobileColorThemes.standard}>
<ThemeContext.Consumer>
{(theme) => <MyText>abc</MyText>}
</ThemeContext.Consumer>
</ThemeContext.Provider>
);
expect(wrapper).toMatchSnapshot();
});
});
Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object.
at invariant (node_modules/fbjs/lib/invariant.js:42:15)
at createFiberFromElementType (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:1933:5)
at createFiberFromElement (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:1878:15)
at reconcileSingleElement (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:3334:19)
at reconcileChildFibers (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:3433:35)
at reconcileChildrenAtPriority (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:4091:30)
at reconcileChildren (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:4074:5)
at updateHostRoot (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:4268:9)
at beginWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:4563:16)
at performUnitOfWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:6529:16)...