message: add test of component children
diff: @@ -39,6 +39,26 @@ describe('Stateful Component', () => {
  new Main().start();
  });
  + it('should render children', () => {
  + class Child extends Component {
  + view = (state) => <div>
  + {state.children}
  + </div>
  + }
  + class Main extends Component {
  + view = (state) => {
  + return <div>
  + <Child>
  + <p>child</p>
  + </Child>
  + </div>
  + }
  + }
  + const element = document.createElement('div');
  + new Main().start(element);
  + expect(element.textContent).toBe('child');
  + });
  +
  it('should call mounted function when created', (done) => {
  class Child extends Component {
  view = (state) => {
  