How to use the inferno-compat.Children function in inferno-compat

it('ForEach should not fail if null children is provided', () => {
    expect(React.Children.forEach(null, null, null)).toBe(undefined);
  });

beforeEach(function() {
    ReactChildren = React.Children;
  });

beforeEach(function() {
    onlyChild = React.Children.only;
    WrapComponent = React.createClass({
      render: function() {
        return <div>{onlyChild(this.props.children, this.props.mapFn, this)}</div>;
      }
    });
  });

render: function() {
        return React.Children.only(this.props.children);
      }
    });