我为高阶组件创建了一个测试,但是每当运行该测试时,都会出现此错误:Invariant Violation: Could not find "store" in either the context or props of "Connect(ExampleComponent)". Either wrap the root component in a <Provider>, or explicitly pass "store" as a prop to "Connect(ExampleComponent)".
我认为这可能与将HOC组成匿名函数的方式有关,在该函数中我无法导出connect函数,但不确定如何解决它。任何帮助/建议将不胜感激。
import React, { PureComponent } from 'react';
import PropTypes from 'prop-types';
import { connect } from 'react-redux';
export default ComposedComponent => {
class ExampleComponent extends PureComponent {
//some logic here
render() {
return (
<div style={{ marginTop: 80 }}>
<ComposedComponent {...this.props} />
</div>
)
);
}
}
ExampleComponent.contextTypes = {
test: PropTypes.func.isRequired,
example: PropTypes.func.isRequired
};
const mapStateToProps = ({ example }) => ({
count: example.count,
});
const mapDispatchToProps = { getExampleCount };
return connect(
mapStateToProps,
mapDispatchToProps
)(ExampleComponent);
};
import React from 'react';
import { shallow } from 'enzyme;'
import { default as HOCExample } from '../HOCExample';
const TestComponent = () => <h1>Test</h1>
const ComponentRendered = HOCExample(TestComponent)
describe('HOCExample', () => {
const props = {
example: []
};
it('renders authorized component', () => {
const wrapper = shallow(<ComponentRendered {...props} />);
expect(wrapper).toMatchSnapshot();
});
afterEach(() => {
jest.clearAllMocks();
});
});
答案 0 :(得分:2)
您没有将存储传递给要测试的组件。
以下文章是有关如何设置测试http://www.facebook.com/GeracaoInvencive
的很好的资源redux-mock-store对模拟商店很有帮助。
import configureMockStore from 'redux-mock-store';
const createMockStore = configureMockStore();
const defaultState = {} // whatever you want the default store state to be
const store = createMockStore(defaultState);
//helper wrapper function
const giveStore = (component, store) => {
const context = {
store,
};
return shallow(component, { context });
};
const wrapper = giveStore(<ComponentRendered {...props} />, store);
您可以将其重构为一个单独的帮助文件,并使其可重用,例如将更多选项传递到GiveStore帮助器中,并将这些道具传递到要测试的组件(例如历史记录)。
答案 1 :(得分:1)
这是根据错误消息所建议的方式解决的,即使用Provider
:
const wrapper = shallow(<Provider store={dummyStore}><ComponentRendered {...props} /></Provider>);
dummyStore
是符合情况的Redux存储,例如,具有example
属性。