javascript - 类型错误 : Cannot read property 'pathname' of undefined in react/redux testing

Question

我正在测试一些 React 组件，这是一个基本的测试套件，只是为了了解码件及其子组件是否正在渲染。

我正在使用 redux-mock-store 来制作商店，并使用 {mount} enzyme 将容器安装在提供程序中，但即使是模拟正确的商店总是会触发错误:

TypeError: Cannot read property 'pathname' of undefined

这是我非常致命的基本测试:

import React from 'react';
import { mount } from 'enzyme';
import configureStore from 'redux-mock-store';
import { Provider } from 'react-redux';
import App from '../containers/App.container';

describe('App', () => {
  let wrapper;
  const mockStore = configureStore([]);
  const store = mockStore({
    router: {
      location: { pathname: '/home', query: {}, search: '' },
      params: {}
    }
  });
  console.log(store.getState());
  beforeEach(() => {
    wrapper = mount(
      <Provider store={store}>
        <App />
      </Provider>
    );
  });

  it('Should render app and container elements', () => {
    expect(wrapper.find('.app').exists()).toBeTruthy();
    expect(wrapper.find('.container').exists()).toBeTruthy();
  });

  it('Should render the navbar', () => {
    expect(wrapper.find('nav').exists()).toBeTruthy();
  });
});

以及(甚至更)简单的组件/容器:

import React, { Component } from 'react';
import NavBar from '../components/Navbar';

class App extends Component {

  render() {
    const { location, logout} = this.props;
    console.log(location);
    return (
      <section className='app'>
        <NavBar location={location.pathname} onLogoutClick={logout}/>
        <div className='container'>
          {this.props.children}
        </div>
      </section>
    );
  }
}

export default App;

容器:

import { connect } from 'react-redux';
import { signOut } from '../actions/auth.actions'
import App from '../components/App';

const mapStateToProps = (state, ownProps) => {
  return {
    location: ownProps.location
  }
}

const mapDispatchToProps = (dispatch, ownProps) => {
  return {
    logout: () => {
      dispatch(signOut())
    }
  }
};

export default connect(mapStateToProps, mapDispatchToProps)(App);

我测试不出问题，mockStore格式正确:

有什么想法吗？

---

更新:

考虑到这一点，我在 rootReducer 中没有 reducer/prop 用于位置，但是，我只想通过子组件传递 react-redux-router 制作的位置对象属性在 ownProps 参数中可用。

奇怪的事实:在应用程序中记录 location 属性会返回正确的对象。

在测试中，始终未定义...(如错误所示)。

这是我的 rootReducer:

import { combineReducers } from 'redux';
import { reducer as formReducer } from 'redux-form';
import { routerReducer } from 'react-router-redux';

import authReducer from './auth.reducer';
import analysisReportsReducer from './AnalysisReports.reducer';
import titleAnalysisReducer from './TitleAnalysis.reducer';
import postsReportsReducer from './PostsReports.reducer';

const rootReducer = combineReducers({
  form:             formReducer,
  routing:          routerReducer,
  auth:             authReducer,
  analysis:         titleAnalysisReducer,
  analysis_reports: analysisReportsReducer,
  posts:            postsReportsReducer
});

export default rootReducer;

Answer 1

看起来您的位置对象在路由器下方。

您的测试可能正在获取 window.location 属性，您的测试套件可能不会复制该属性，假设测试是 cli 而不是在浏览器中。

也许试试:

<NavBar location={this.props.router.location.pathname} onLogoutClick={logout}/>