Version: **15.0.0-rc.1**
Fiddle: https://jsfiddle.net/69z2wepo/33980/ (check console)

For an example providing `NaN` to a css property will result in "_NaN is an invalid value for the fontSize css style property_".
Now I'm aware that there is an error in my code but I have no idea which component I should check.
I would like to have something like this: "_NaN is an invalid value for the fontSize style property. Check the render method of Header_".
I'll be happy to try to solve this if this is something we want to do.

};
    });
    it('should not duplicate uppercased selfclosing tags', function() {
      var Container = React.createClass({
        render: function() {
          return React.createElement('BR', null);
        },
      });
      var returnedValue = ReactDOMServer.renderToString(<Container/>);
      expect(returnedValue).not.toContain('</BR>');
    });
    it('should warn against children for void elements', function() {
      var container = document.createElement('div');
      expect(function() {
        ReactDOM.render(<input>children</input>, container);
      }).toThrow(
        'input is a void element tag and must not have `children` or ' +
        'use `props.dangerouslySetInnerHTML`.'
      );
    });
    it('should warn against dangerouslySetInnerHTML for void elements', function() {
      var container = document.createElement('div');
      expect(function() {
        ReactDOM.render(
          <input dangerouslySetInnerHTML={{__html: 'content'}} />,
          container
        );
      }).toThrow(
        'input is a void element tag and must not have `children` or use ' +
        '`props.dangerouslySetInnerHTML`.'