Wrapper.html() only shows the first element

I am currently testing my Vue component.

I have this as my test:

describe("tests", () => {
  wrapper = mount(myVueComponent, {
    propsData: {
      name: "required",
      fullscreen: "true"
    }
  });

  it("fullscreen on", () => {
    expect(wrapper.vm.fullscreenElement).toBeFalsy();
    console.log(wrapper.vm.html());
    wrapper.vm.onFullscreen(); // this method checks one of the child components which is not visible in my wrapper..
  })
});

When I try wrapper.vm.html() I get:

<div class="siDialog">
  <!---->
</div>

But in my component template there children elements where, is now. How do I get the whole template in my test?