我正在尝试开始使用Node.js和React上的TDD，刚刚安装并使Jest工作，但是我的第一个测试失败了一些我无法理解的错误代码。
这是我运行'npm test'时出现的错误：
Using Jest CLI v0.4.14
FAIL __tests__/Search-spec.js (1.714s)
Warning: React.createElement: type should not be null or undefined. It should be a string (for DOM elements) or a ReactClass (for composite components).
Warning: Only functions or strings can be mounted as React components.
● Search › it should exists
- TypeError: /home/urielbertoche/works/dev-shop/src/components/Search/Search.js: /home/urielbertoche/works/dev-shop/src/utils/Link.js: /home/urielbertoche/works/dev-shop/src/actions/AppActions.js: /home/urielbertoche/works/dev-shop/node_modules/superagent/lib/node/index.js: /home/urielbertoche/works/dev-shop/node_modules/superagent/lib/node/part.js: Object object has no method 'hasOwnProperty'
at /home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/moduleMocker.js:318:23
at Array.forEach (native)
at _getMetadata (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/moduleMocker.js:310:27)
at /home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/moduleMocker.js:321:27
at Array.forEach (native)
at _getMetadata (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/moduleMocker.js:310:27)
at Object.module.exports.getMetadata (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/moduleMocker.js:430:20)
at Loader._generateMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:282:56)
at Loader.requireMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:810:43)
at Loader.requireModuleOrMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:933:17)
at /home/urielbertoche/works/dev-shop/node_modules/superagent/lib/node/part.js:7:12
at Object.runContentWithLocalBindings (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/utils.js:482:17)
at Loader._execModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:245:9)
at Loader.requireModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:914:12)
at Loader._generateMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:276:30)
at Loader.requireMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:810:43)
at Loader.requireModuleOrMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:933:17)
at /home/urielbertoche/works/dev-shop/node_modules/superagent/lib/node/index.js:17:12
at Object.runContentWithLocalBindings (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/utils.js:482:17)
at Loader._execModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:245:9)
at Loader.requireModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:914:12)
at Loader._generateMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:276:30)
at Loader.requireMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:810:43)
at Loader.requireModuleOrMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:933:17)
at /home/urielbertoche/works/dev-shop/src/actions/AppActions.js:11:19
at Object.runContentWithLocalBindings (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/utils.js:482:17)
at Loader._execModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:245:9)
at Loader.requireModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:914:12)
at Loader._generateMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:276:30)
at Loader.requireMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:810:43)
at Loader.requireModuleOrMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:933:17)
at /home/urielbertoche/works/dev-shop/src/utils/Link.js:15:26
at Object.runContentWithLocalBindings (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/utils.js:482:17)
at Loader._execModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:245:9)
at Loader.requireModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:914:12)
at Loader._generateMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:276:30)
at Loader.requireMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:810:43)
at Loader.requireModuleOrMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:933:17)
at /home/urielbertoche/works/dev-shop/src/components/Search/Search.js:27:18
at Object.runContentWithLocalBindings (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/lib/utils.js:482:17)
at Loader._execModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:245:9)
at Loader.requireModule (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:914:12)
at Loader.requireModuleOrMock (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/src/HasteModuleLoader/HasteModuleLoader.js:935:17)
at Spec.<anonymous> (/home/urielbertoche/works/dev-shop/__tests__/Search-spec.js:15:14)
at [object Object].jasmine.Block.execute (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/vendor/jasmine/jasmine-1.3.0.js:1065:17)
at [object Object].jasmine.Queue.next_ (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/vendor/jasmine/jasmine-1.3.0.js:2098:31)
at [object Object]._onTimeout (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/vendor/jasmine/jasmine-1.3.0.js:2088:18)
at Timer.listOnTimeout [as ontimeout] (timers.js:121:15)
- TypeError: Cannot call method 'toUpperCase' of undefined
at autoGenerateWrapperClass (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactDefaultInjection.js:53:19)
at Object.getComponentClassForElement (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactNativeComponent.js:59:49)
at ReactCompositeComponentMixin._processProps (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactCompositeComponent.js:429:44)
at ReactCompositeComponentMixin.mountComponent (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactCompositeComponent.js:127:28)
at wrapper [as mountComponent] (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactPerf.js:70:21)
at Object.ReactReconciler.mountComponent (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactReconciler.js:38:35)
at mountComponentIntoNode (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactMount.js:248:32)
at ReactReconcileTransaction.Mixin.perform (/home/urielbertoche/works/dev-shop/node_modules/react/lib/Transaction.js:134:20)
at batchedMountComponentIntoNode (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactMount.js:269:15)
at ReactDefaultBatchingStrategyTransaction.Mixin.perform (/home/urielbertoche/works/dev-shop/node_modules/react/lib/Transaction.js:134:20)
at Object.ReactDefaultBatchingStrategy.batchedUpdates (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactDefaultBatchingStrategy.js:66:19)
at Object.batchedUpdates (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactUpdates.js:110:20)
at Object.ReactMount._renderNewRootComponent (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactMount.js:404:18)
at Object.wrapper [as _renderNewRootComponent] (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactPerf.js:70:21)
at Object.ReactMount.render (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactMount.js:493:32)
at Object.wrapper [as render] (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactPerf.js:70:21)
at Object.ReactTestUtils.renderIntoDocument (/home/urielbertoche/works/dev-shop/node_modules/react/lib/ReactTestUtils.js:52:18)
at Spec.<anonymous> (/home/urielbertoche/works/dev-shop/__tests__/Search-spec.js:20:28)
at jasmine.Block.execute (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/vendor/jasmine/jasmine-1.3.0.js:1065:17)
at jasmine.Queue.next_ (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/vendor/jasmine/jasmine-1.3.0.js:2098:31)
at null._onTimeout (/home/urielbertoche/works/dev-shop/node_modules/jest-cli/vendor/jasmine/jasmine-1.3.0.js:2088:18)
at Timer.listOnTimeout [as ontimeout] (timers.js:121:15)
1 test failed, 0 tests passed (1 total)
Run time: 1.892s
npm ERR! Test failed. See above for more details.
npm ERR! not ok code 0
我的Search.js：
/*! React Starter Kit | MIT License | http://www.reactstarterkit.com/ */
import React, { PropTypes } from 'react';
import styles from './Search.less';
import withStyles from '../../decorators/withStyles';
import Link from '../../utils/Link';
@withStyles(styles)
class Search {
static contextTypes = {
onSetTitle: PropTypes.func.isRequired
};
render() {
let title = 'Pesquisa de desenvolvedores';
this.context.onSetTitle(title);
return (
<div className="Search">
<div className="Search-container">
<a className="Search-brand" href="/" onClick={Link.handleClick}>
<span className="Search-brandTxt">Dev-Shop</span>
</a>
<div className="Search-banner">
<h1 className="Search-bannerTitle">Loja de desenvolvedores</h1>
</div>
</div>
</div>
);
};
}
export default Search;
和我的Search-spec.js：
/**
* Created by urielbertoche on 02/07/15.
*/
jest.dontMock('../src/components/Search');
describe('Search', function() {
var React = require('react/addons');
var TestUtils = React.addons.TestUtils;
var Search;
beforeEach(function() {
Search = require('../src/components/Search');
});
it('should exists', function() {
// Render into document
var search = TestUtils.renderIntoDocument(<Search />);
expect(TestUtils.isCompositeComponent(search)).toBeTruthy();
});
});
首先我不明白警告，但由于它只是一个警告，我猜这不是问题。但 TypeError 我真的不知道它为什么会发生。我正在使用节点0.12 ，降级它，删除我的 node_modules 文件夹，运行 npm install 但它根本没有更改错误消息。
以前有人有这个问题吗？