I think this shouldn't pass:

```js
    expect(() => {
      expect(() => {
        throw new Error('haha') // no warning
      }).toWarnDev(
        'nope',
      );
    }).toThrow('haha');
```

but it does.
render() {
          return (
            <span>
              {'hello'} {'world'}
            </span>
          );
        }
      }
      const response = ReactDOMServer.renderToStaticMarkup(<TestComponent />);
      expect(response).toBe('<span>hello world</span>');
    });
    it('should not use comments for empty nodes', () => {
      class TestComponent extends React.Component {
        render() {
          return null;
        }
      }
      const response = ReactDOMServer.renderToStaticMarkup(<TestComponent />);
      expect(response).toBe('');
    });
    it('should only execute certain lifecycle methods', () => {
      function runTest() {
        const lifecycle = [];
        class TestComponent extends React.Component {