这是我的组件：

DesignerPage组件

[...]
var TopBar = require('../components/layout/TopBar.js');

var DesignerPage = React.createClass({
  getInitialState: function() {
    var state = {
    };
    return state;
  },render: function() {
    return (
      <div> 
        <TopBar />
      </div>
    )
  }
});

module.exports = DesignerPage;

TopBar组件

/** @jsx React.DOM */
var React = require("react");

var TopBar = React.createClass({
    render: function() {
        return (
            <nav className="top-bar">
            </nav>
        );
    }
});

module.exports = TopBar;

现在,我想测试DesignerPage组件是否包含TopBar组件.这是我认为应该工作的：

/** @jsx React.DOM */
jest.dontMock('../../src/js/pages/DesignerPage.js');
describe('DesignerPage',function() {
  it('should contain a TopBar',function() {
    var React = require('react/addons');
    var DesignerPage = require('../../src/js/pages/DesignerPage.js');
    var TestUtils = React.addons.TestUtils;

    // Render a DesignerPage into the document
    var page = TestUtils.renderIntoDocument(
      <DesignerPage />
    );

    // Verify that a TopBar is included
    var topbar = TestUtils.scryRenderedComponentsWithType(page,'TopBar');
    expect(topbar.length).toBe(1);
  });
});

但它不通过…