I am using React's `TestUtil.renderIntoDocument` to test a React component class, [like this](https://facebook.github.io/jest/docs/tutorial-react.html#content) (only I am using TypeScript instead of Babel):

```
describe("MyComponent", () => {
  it("will test something after being mounted", () => {
    var component = TestUtils.renderIntoDocument(<MyComponent />);
    // some test...
  })
})

```

This works, but I want to write a test that verifies that `componentWillUnmount` behaves as expected. However, it seems that the test runner never unmounts the component, which is not surprising. So my question is: how do I unmount the component from within a test? The `TestUtil` doesn't have anything that looks like what I want, something along the lines of `removeFromDocument` I would imagine.