永久违反：在“ Connect（SportsDatabase）”的上下文或道具中找不到“存储”

reactjs React.js

卡卡西路易前端

2020-03-11

完整代码在这里：https : //gist.github.com/js08/0ec3d70dfda76d7e9fb4

你好

  • 我有一个应用程序，其中根据构建环境显示了针对台式机和移动设备的不同模板。
  • 我可以在需要隐藏移动模板的导航菜单的地方成功开发它。
  • 现在，我能够编写一个测试用例，其中它通过原型获取所有值并正确呈现
  • 但不确定如何在移动设备上编写单元测试用例时，不应呈现导航组件。
  • 我尝试过，但是遇到错误...您能告诉我如何解决它。
  • 提供下面的代码。

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)

第781篇《永久违反：在“ Connect（SportsDatabase）”的上下文或道具中找不到“存储”》来自Winter(https://github.com/aiyld/aiyld.github.io)的站点

共7个回答
米亚神无 2020.03.11

对我来说，这是进口问题，希望对您有所帮助。WebStorm的默认导入是错误的。

更换

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

与

import {connect} from "react-redux";
神无Davaid 2020.03.11

当我升级时，这发生在我身上。我不得不降级了。

react-redux ^ 5.0.6→^ 7.1.3

樱小胖 2020.03.11

可能对我有用的解决方案

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);
    });
});
小小 2020.03.11

这样做是从“酶”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();
  });
西门泡芙Jim 2020.03.11

When we put together a react-redux application we should expect to see a structure where at the top we have the Provider tag which has an instance of a redux store.

That Provider tag then renders your parent component, lets call it the App component which in turn renders every other component inside the application.

Here is the key part, when we wrap a component with the connect() function, that connect() function expects to see some parent component within the hierarchy that has the Provider tag.

So the instance you put the connect() function in there, it will look up the hierarchy and try to find the Provider.

Thats what you want to have happen, but in your test environment that flow is breaking down.

Why?

Why?

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，从根本上讲，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，它与任何组件都没有关系，Provider也不在其上方存储，这就是为什么您看到此消息的原因。

Provider该组件的上下文或属性中没有存储或标签，因此该组件会抛出错误，因为它希望Provider在其父层次结构中看到标记或存储。

这就是该错误的含义。

ItachiJinJin 2020.03.11

很简单 您正在尝试测试通过调用生成的包装器组件connect()(MyPlainComponent)。该包装器组件希望可以访问Redux存储。通常情况下，该存储库可以用作context.store，因为在组件层次结构的顶部，您将有一个<Provider store={myStore} />。但是，您将自己渲染连接的组件，没有存储，因此会引发错误。

您有几种选择：

  • 创建一个商店并<Provider>在连接的组件周围渲染一个
  • 创建一个商店并将其直接传递为<MyConnectedComponent store={store} />，因为连接的组件也将接受“ store”作为道具
  • 不要费心测试连接的组件。导出“普通”未连接版本，然后进行测试。如果您测试您的简单组件和mapStateToProps功能，则可以放心地假设所连接的版本将正常工作。

您可能想通读Redux文档中的“测试”页面：https : //redux.js.org/recipes/writing-tests。

编辑：

在实际看到您发布了源代码并重新读取错误消息之后，真正的问题不在于SportsTopPane组件。问题在于您要“完全”渲染SportsTopPane，它也将渲染所有子项，而不是像在第一种情况下那样进行“浅”渲染。该行searchComponent = <SportsDatabase sportsWholeFramework="desktop" />;正在渲染我假设也已连接的组件，因此期望在React的“上下文”功能中可以使用存储。

此时，您有两个新选项：

  • 仅对SportsTopPane进行“浅”渲染，以免强迫其完全渲染其子级
  • 如果您确实想对SportsTopPane进行“深度”渲染，则需要在上下文中提供Redux存储。我强烈建议您看一下酶测试库，它可以让您做到这一点。有关示例，请参见http://airbnb.io/enzyme/docs/api/ReactWrapper/setContext.html。

总的来说，我会指出您可能在这个组件中尝试做太多事情，并且可能希望考虑将其分解为较小的组件，而每个组件的逻辑更少。

小哥达蒙 2020.03.11

就我而言

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

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

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

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