message: add unit test - reset props
diff: @@ -75,7 +75,6 @@ describe('vdom-my', () => {
  });
  it('it should reset and apply new style', () => {
  -
  let element = render(createElement('div', null, 'x'));
  expect(element.nodeName).toEqual('DIV');
  expect(element.textContent).toEqual('x');
  @@ -86,6 +85,20 @@ describe('vdom-my', () => {
  expect(element.style.left).toEqual('');
  });
  + it('it should reset class and style', () => {
  + let element = render(createElement('div', {
  + className: 'a',
  + style: { left: '5px' }
  + }, 'x'));
  + expect(element.nodeName).toEqual('DIV');
  + expect(element.className).toEqual('a');
  + expect(element.textContent).toEqual('x');
  + expect(element.style.left).toEqual('5px');
  + render(createElement("div", null));
  + expect(element.style.left).toEqual('');
  + expect(element.className).toEqual('');
  + });
  +
  it('it should flatten children', () => {
  const nodes = [1, 2, 3].map(i => createElement("li", null, i));
  const node = createElement("ul", null, nodes);
  