javascript-使react-router不会破坏Jest(reactJs)测试

2022-12-12 08:27:08

我目前正在尝试将Jest测试添加到React应用程序(找到here).

但是,当我运行以下测试时,

/** @jsx React.DOM */

jest.dontMock('jquery');
jest.dontMock('../js/components/CategoryPage.jsx');
describe('Category Page', function() {
  var React = require('react/addons');
  var TestUtils = React.addons.TestUtils;
  var CategoryPage = require('../js/components/CategoryPage.jsx');
  it('renders into the page correctly', function() {
    // Render the CategoryPage into the document
    var categoryPage = TestUtils.renderIntoDocument(
      <CategoryPage params={{"category": "tests"}} />
    );
    expect(categoryPage).toBeDefined();
  });
});

我收到以下错误：

● Category Page › it renders into the page correctly
  - TypeError: Property 'makeHref' of object #<Object> is not a function
        at Navigation.makeHref (/home/stephen/reps/node_modules/react-            router/modules/mixins/Navigation.js:29:25)
        at React.createClass.getHref (/home/stephen/reps/node_modules/react-router/modules/components/Link.js:76:17)
        at React.createClass.render (/home/stephen/reps/node_modules/react-router/modules/components/Link.js:97:18)
        at ReactCompositeComponentMixin._renderValidatedComponent (/home/stephen/reps/node_modules/react/lib/ReactCompositeComponent.js:1260:34)
        at wrapper [as _renderValidatedComponent] (/home/stephen/reps/node_modules/react/lib/ReactPerf.js:50:21)
        at ReactCompositeComponentMixin.mountComponent     (/home/stephen/reps/node_modules/react/lib/ReactCompositeComponent.js:802:14)
        at wrapper [as mountComponent] (/home/stephen/reps/node_modules/react/lib/ReactPerf.js:50:21)
        at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (/home/stephen/reps/node_modules/react/lib/ReactMultiChild.js:195:42)
        at ReactDOMComponent.Mixin._createContentMarkup (/home/stephen/reps/node_modules/react/lib/ReactDOMComponent.js:260:32)
        at ReactDOMComponent.Mixin.mountComponent (/home/stephen/reps/node_modules/react/lib/ReactDOMComponent.js:182:14)
        at ReactDOMComponent.wrapper [as mountComponent] (/home/stephen/reps/node_modules/react/lib/ReactPerf.js:50:21)
        at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (/home/stephen/reps/node_modules/react/lib/ReactMultiChild.js:195:42)
        at ReactDOMComponent.Mixin._createContentMarkup (/home/stephen/reps/node_modules/react/lib/ReactDOMComponent.js:260:32)

我的应用程序和CategoryPage组件都专门使用react-router. CategoryPage包含一个使用反应路由器进行身份验证的混合.根据我自己的调试,我发现当Jest尝试调用makeHref(反应路由器的内置导航方法之一)时发生错误.

为了解决这个问题,我首先尝试调用jest.dontMock(‘react-router’),但这没有任何效果.问题似乎是,通过不嘲笑CategoryPage,笑话将自动且不可逆地包括其所有依赖项,且不受模拟.

这个问题很难解决的部分原因是,大多数将Jest与React一起使用的人似乎没有在测试其组件,或者是因为他们不注重测试,或者是因为他们使用的是Flux而仅测试Stores,Dispatchers等.我们尚未使用Flux,因此这不是我们的选择,但可能是将来我们必须过渡的事情.

编辑1：如果删除jest.dontMock(‘../ js / components / CategoryPage.jsx’),则测试通过,但是实际上无法测试该组件的功能.

编辑2：当我排除jest.dontMock(‘jquery’)时,我得到另一个与用于创建模态的mixin相关的错误：

Category Page › it encountered a declaration exception
- TypeError: 
/home/stephen/reps/js/components/CategoryPage.jsx:  
/home/stephen/reps/js/components/Feed.jsx:     
/home/stephen/reps/js/components/InvestmentButton.jsx: 
/home/stephen/reps/js/components/Modal.jsx: 
/home/stephen/reps/js/mixins/BootstrapModalMixin.jsx: 
/home/stephen/reps/node_modules/bootstrap/dist/js/npm.js: 
/home/stephen/reps/node_modules/bootstrap/js/alert.js: Cannot call method 'on' of undefined

编辑3：我似乎已经隔离了反应路由器的Navigation mixin的错误,它称为this.context.makeHref.从.9版本开始,React团队已弃用this.context,因此我认为这可能是问题的根源.因此,欢迎对此this.context进行任何变通或修复.

解决方法:

我继续整理了一个修复程序,使您仍然可以使用Jest.

https://labs.chie.do/jest-testing-with-react-router/

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