不变违规:无法在“Connect(SportsDatabase)”的上下文或道具中找到“存储”

时间:2016-03-24 23:32:43

标签: reactjs mocha redux

此处的完整代码:https://gist.github.com/js08/0ec3d70dfda76d7e9fb4

您好,

  • 我有一个应用程序,它根据构建环境显示桌面和移动设备的不同模板。
  • 我成功地开发了它,我需要隐藏我的移动模板的导航菜单。
  • 现在我能够编写一个测试用例,通过proptypes获取所有值并正确呈现
  • 但不确定如何在移动设备导航组件的情况下编写单元测试用例。
  • 我试过,但我遇到了错误...你能告诉我如何解决它。
  • 以下提供代码。

测试用例

import {expect} from 'chai';
import React from 'react';
import TestUtils from 'react-addons-test-utils';
import {SportsTopPortion} from '../../../src/components/sports-top-portion/sports-top-portion.jsx';
require('../../test-utils/dom');


describe('"sports-top-portion" Unit Tests', function() {
    let shallowRenderer = TestUtils.createRenderer();

    let sportsContentContainerLayout ='mobile';
    let sportsContentContainerProfile = {'exists': 'hasSidebar'};
    let sportsContentContainerAuthExchange = {hasValidAccessToken: true};
    let sportsContentContainerHasValidAccessToken ='test'; 

    it('should render correctly', () => {
        shallowRenderer.render(<SportsTopPortion sportsWholeFramework={sportsContentContainerLayout} sportsPlayers={sportsContentContainerProfile} sportsAuthentication={sportsContentContainerAuthExchange} sportsUpperBar={{activeSportsLink:'test'}} />);
        //shallowRenderer.render(<SportsTopPortion sportsWholeFramework={sportsContentContainerLayout} sportsPlayers={sportsContentContainerProfile} hasValidAccessToken={sportsContentContainerHasValidAccessToken}  />);

        let renderedElement = shallowRenderer.getRenderOutput();
        console.log("renderedElement------->" + JSON.stringify(renderedElement));

        expect(renderedElement).to.exist;
    });

    it('should not render sportsNavigationComponent when sports.build is mobile', () => {
        let sportsNavigationComponent = TestUtils.renderIntoDocument(<SportsTopPortion sportsWholeFramework={sportsContentContainerLayout} sportsPlayers={sportsContentContainerProfile} sportsAuthentication={sportsContentContainerAuthExchange} sportsUpperBar={{activeSportsLink:'test'}} />);
        console.log("sportsNavigationComponent------->" + JSON.stringify(sportsNavigationComponent));

        //let footnoteContainer = TestUtils.findRenderedDOMComponentWithClass(sportsNavigationComponent, 'linkPack--standard');

        //expect(footnoteContainer).to.exist;
    });

});

需要编写测试用例的代码片段

if (sports.build === 'mobile') {
    sportsNavigationComponent = <div />;
    sportsSideMEnu = <div />;
    searchComponent = <div />;
    sportsPlayersWidget = <div />;
}

错误

1) "sports-top-portion" Unit Tests should not render sportsNavigationComponent when sports.build is mobile:
     Invariant Violation: Could not find "store" in either the context or props of "Connect(SportsDatabase)". Either wrap the root component in a <Provider>, or explicitly pass "store" as a prop to "Connect(SportsDatabase)".
      at Object.invariant [as default] (C:\sports-whole-page\node_modules\invariant\invariant.js:42:15)
      at new Connect (C:\sports-whole-page\node_modules\react-redux\lib\components\createConnect.js:135:33)
      at [object Object].ReactCompositeComponentMixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactCompositeComponent.js:148:18)
      at [object Object].wrapper [as mountComponent] (C:\sports-whole-page\node_modules\react\lib\ReactPerf.js:66:21)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (C:\sports-whole-page\node_modules\react\lib\ReactMultiChild.js:241:44)
      at ReactDOMComponent.Mixin._createContentMarkup (C:\sports-whole-page\node_modules\react\lib\ReactDOMComponent.js:591:32)
      at ReactDOMComponent.Mixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactDOMComponent.js:479:29)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (C:\sports-whole-page\node_modules\react\lib\ReactMultiChild.js:241:44)
      at ReactDOMComponent.Mixin._createContentMarkup (C:\sports-whole-page\node_modules\react\lib\ReactDOMComponent.js:591:32)
      at ReactDOMComponent.Mixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactDOMComponent.js:479:29)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at [object Object].ReactCompositeComponentMixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactCompositeComponent.js:225:34)
      at [object Object].wrapper [as mountComponent] (C:\sports-whole-page\node_modules\react\lib\ReactPerf.js:66:21)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (C:\sports-whole-page\node_modules\react\lib\ReactMultiChild.js:241:44)
      at ReactDOMComponent.Mixin._createContentMarkup (C:\sports-whole-page\node_modules\react\lib\ReactDOMComponent.js:591:32)
      at ReactDOMComponent.Mixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactDOMComponent.js:479:29)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at [object Object].ReactCompositeComponentMixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactCompositeComponent.js:225:34)
      at [object Object].wrapper [as mountComponent] (C:\sports-whole-page\node_modules\react\lib\ReactPerf.js:66:21)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (C:\sports-whole-page\node_modules\react\lib\ReactMultiChild.js:241:44)
      at ReactDOMComponent.Mixin._createContentMarkup (C:\sports-whole-page\node_modules\react\lib\ReactDOMComponent.js:591:32)
      at ReactDOMComponent.Mixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactDOMComponent.js:479:29)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at [object Object].ReactCompositeComponentMixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactCompositeComponent.js:225:34)
      at [object Object].wrapper [as mountComponent] (C:\sports-whole-page\node_modules\react\lib\ReactPerf.js:66:21)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at [object Object].ReactCompositeComponentMixin.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactCompositeComponent.js:225:34)
      at [object Object].wrapper [as mountComponent] (C:\sports-whole-page\node_modules\react\lib\ReactPerf.js:66:21)
      at Object.ReactReconciler.mountComponent (C:\sports-whole-page\node_modules\react\lib\ReactReconciler.js:37:35)
      at mountComponentIntoNode (C:\sports-whole-page\node_modules\react\lib\ReactMount.js:266:32)
      at ReactReconcileTransaction.Mixin.perform (C:\sports-whole-page\node_modules\react\lib\Transaction.js:136:20)
      at batchedMountComponentIntoNode (C:\sports-whole-page\node_modules\react\lib\ReactMount.js:282:15)
      at ReactDefaultBatchingStrategyTransaction.Mixin.perform (C:\sports-whole-page\node_modules\react\lib\Transaction.js:136:20)
      at Object.ReactDefaultBatchingStrategy.batchedUpdates (C:\sports-whole-page\node_modules\react\lib\ReactDefaultBatchingStrategy.js:62:19)
      at Object.batchedUpdates (C:\sports-whole-page\node_modules\react\lib\ReactUpdates.js:94:20)
      at Object.ReactMount._renderNewRootComponent (C:\sports-whole-page\node_modules\react\lib\ReactMount.js:476:18)
      at Object.wrapper [as _renderNewRootComponent] (C:\sports-whole-page\node_modules\react\lib\ReactPerf.js:66:21)
      at Object.ReactMount._renderSubtreeIntoContainer (C:\sports-whole-page\node_modules\react\lib\ReactMount.js:550:32)
      at Object.ReactMount.render (C:\sports-whole-page\node_modules\react\lib\ReactMount.js:570:23)
      at Object.wrapper [as render] (C:\sports-whole-page\node_modules\react\lib\ReactPerf.js:66:21)
      at Object.ReactTestUtils.renderIntoDocument (C:\sports-whole-page\node_modules\react\lib\ReactTestUtils.js:76:21)
      at Context.<anonymous> (C:/codebase/sports-whole-page/test/components/sports-top-portion/sports-top-portion-unit-tests.js:28:41)
      at callFn (C:\sports-whole-page\node_modules\mocha\lib\runnable.js:286:21)
      at Test.Runnable.run (C:\sports-whole-page\node_modules\mocha\lib\runnable.js:279:7)
      at Runner.runTest (C:\sports-whole-page\node_modules\mocha\lib\runner.js:421:10)
      at C:\sports-whole-page\node_modules\mocha\lib\runner.js:528:12
      at next (C:\sports-whole-page\node_modules\mocha\lib\runner.js:341:14)
      at C:\sports-whole-page\node_modules\mocha\lib\runner.js:351:7
      at next (C:\sports-whole-page\node_modules\mocha\lib\runner.js:283:14)
      at Immediate._onImmediate (C:\sports-whole-page\node_modules\mocha\lib\runner.js:319:5)

9 个答案:

答案 0 :(得分:128)

非常简单。您正在尝试通过调用connect()(MyPlainComponent)来测试生成的包装器组件。该包装器组件希望能够访问Redux存储。通常情况下,商店可以context.store显示,因为在您的组件层次结构的顶部,您有<Provider store={myStore} />。但是,您自己渲染连接的组件,没有商店,因此它会抛出错误。

您有几个选择:

  • 创建商店并在连接的组件周围呈现<Provider>
  • 创建商店并直接将其作为<MyConnectedComponent store={store} />传递,因为连接的组件也会接受&#34;存储&#34;作为道具
  • 不要打扰连接组件的测试。导出&#34; plain&#34;,未连接的版本,然后测试它。如果您测试普通组件和mapStateToProps功能,则可以安全地假设连接版本可以正常工作。

您可能希望阅读&#34;测试&#34; Redux文档中的页面:https://redux.js.org/recipes/writing-tests

修改

在实际看到您发布了源代码并重新阅读错误消息后,真正的问题不在于SportsTopPane组件。问题是你要完全&#34;完全&#34;渲染SportsTopPane,它也渲染了它的所有孩子,而不是做一个&#34;浅&#34;像你在第一种情况下渲染。行searchComponent = <SportsDatabase sportsWholeFramework="desktop" />;正在渲染我认为也连接的组件,因此期望商店在React&#34; context&#34;中可用。特征

此时,您有两个新选项:

  • 只做&#34;浅&#34;渲染SportsTopPane,这样你就不会强迫它完全渲染它的孩子了
  • 如果你想做&#34;深&#34;渲染SportsTopPane,您需要在上下文中提供Redux存储。我强烈建议你看看酶测试库,它可以让你做到这一点。有关示例,请参阅http://airbnb.io/enzyme/docs/api/ReactWrapper/setContext.html

总的来说,我会注意到在这个组件中可能会尝试做太多。您可能需要考虑将每个组件的逻辑分解为更小的部分。

答案 1 :(得分:46)

可能的解决方案对我来说很开心

import React from "react";
import { shallow } from "enzyme";
import { Provider } from "react-redux";
import configureMockStore from "redux-mock-store";
import TestPage from "../TestPage";

const mockStore = configureMockStore();
const store = mockStore({});

describe("Testpage Component", () => {
    it("should render without throwing an error", () => {
        expect(
            shallow(
                <Provider store={store}>
                    <TestPage />
                </Provider>
            ).exists(<h1>Test page</h1>)
        ).toBe(true);
    });
});

答案 2 :(得分:45)

正如redux的官方docs所建议的那样,更好地导出未连接的组件。

为了能够在不必处理装饰器的情况下测试App组件本身,我们建议您也导出未修饰的组件:

import { connect } from 'react-redux'

// Use named export for unconnected component (for tests)
export class App extends Component { /* ... */ }
 
// Use default export for the connected component (for app)
export default connect(mapStateToProps)(App)

由于默认导出仍然是装饰组件,因此上图所示的import语句将像以前一样工作,因此您不必更改应用程序代码。但是,您现在可以在测试文件中导入未修饰的App组件,如下所示:

// Note the curly braces: grab the named export instead of default export
import { App } from './App'

如果你需要两者:

import ConnectedApp, { App } from './App'

在应用程序本身中,您仍然可以正常导入它:

import App from './App'

您只能使用命名导出进行测试。

答案 3 :(得分:6)

当我们将react-redux应用程序放在一起时,我们应该期望看到一个结构,在顶部具有Provider标签,该标签具有redux存储的实例。

然后,该Provider标记呈现您的父组件,将其称为App组件,它依次呈现该应用程序内的所有其他组件。

这是关键部分,当我们使用connect()函数包装组件时,connect()函数希望看到带有Provider标签的层次结构中的某些父组件。 / p>

因此,您在其中放置了connect()函数的实例,它将查找层次结构并尝试找到Provider

这就是您想要发生的事情,但是在测试环境中,流程正在崩溃。

为什么?

为什么?

当我们回到假定的sportsDatabase测试文件时,您必须自己是sportsDatabase组件,然后尝试独立地单独呈现该组件。

因此,本质上,您在该测试文件中所做的只是获取该组件并将其扔掉而已,并且它与任何Provider都没有关系,也不存储在其上方,这就是为什么您看到此消息的原因

该组件的上下文或属性中没有store或Provider标签,因此该组件抛出错误是因为它想在其父层次结构中看到Provider标签或存储。

这就是该错误的意思。

答案 4 :(得分:5)

就我而言

const myReducers = combineReducers({
  user: UserReducer
});

const store: any = createStore(
  myReducers,
  applyMiddleware(thunk)
);

shallow(<Login />, { context: { store } });

答案 5 :(得分:4)

对我来说,这是进口问题,希望对您有所帮助。 WebStorm默认导入错误。

替换

import connect from "react-redux/lib/connect/connect";

使用

import {connect} from "react-redux";

答案 6 :(得分:2)

这是我升级时发生的事情。我不得不降级。

react-redux ^ 5.0.6→^ 7.1.3

答案 7 :(得分:1)

此操作是从“酶”中导入{浅,安装};

const store = mockStore({
  startup: { complete: false }
});

describe("==== Testing App ======", () => {
  const setUpFn = props => {
    return mount(
      <Provider store={store}>
        <App />
      </Provider>
    );
  };

  let wrapper;
  beforeEach(() => {
    wrapper = setUpFn();
  });

答案 8 :(得分:1)

在Index.js的末尾需要添加以下代码:

import React from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter  } from 'react-router-dom';

import './index.css';
import App from './App';

import { Provider } from 'react-redux';
import { createStore, applyMiddleware, compose, combineReducers } from 'redux';
import thunk from 'redux-thunk';

///its your redux ex
import productReducer from './redux/reducer/admin/product/produt.reducer.js'

const rootReducer = combineReducers({
    adminProduct: productReducer
   
})
const composeEnhancers = window._REDUX_DEVTOOLS_EXTENSION_COMPOSE_ || compose;
const store = createStore(rootReducer, composeEnhancers(applyMiddleware(thunk)));


const app = (
    <Provider store={store}>
        <BrowserRouter   basename='/'>
            <App />
        </BrowserRouter >
    </Provider>
);
ReactDOM.render(app, document.getElementById('root'));