Code sample of my test that is breaking when I don't think it should.

react-broken.spec.js

/** @jsx React.DOM */
'use strict';

describe('sample test', function() {

	var Broken, Working;

	beforeEach(function() {

		Broken = React.createClass({
			render : function() {
				return (
					<div>i am broken</div>
				);
			}
		});

		Working = React.createClass({

			render : function() {
				return (
					<div></div>
				);
			}

		});

	});

	it('should render broken into document', function() {

		var broken = <Broken />;

		React.addons.TestUtils.renderIntoDocument(broken);

	});

	it('should render working into document', function() {

		var working = <Working />;

		React.addons.TestUtils.renderIntoDocument(working);

	});

});