content: import React from 'react';
  import ReactTestUtils from 'react/lib/ReactTestUtils';
  import TabPane from '../src/TabPane';
  
  describe('TabPane', function () {
    it('Should have class', function () {
      let instance = ReactTestUtils.renderIntoDocument(
        <TabPane>Item content</TabPane>
      );
      assert.ok(ReactTestUtils.findRenderedDOMComponentWithClass(instance, 'tab-pane'));
    });
  
    it('Should add active class', function () {
      let instance = ReactTestUtils.renderIntoDocument(
        <TabPane active={true}>Item content</TabPane>
      );
      assert.ok(ReactTestUtils.findRenderedDOMComponentWithClass(instance, 'active'));
    });
  });
  