React & Jest, how to test changing state and checking for another component

Question

React - Test Utilities Docs

I have a Login component which will display a Notification component if this.state.error i

Answer 1

This should probably be refactored a bit. The Notification component should probably be always rendered in a more global component (like a Page Wrapper or some sort of other container), and it should probably render null unless there's errors within a global reducer. A Login component probably shouldn't maintain the responsibility and business logic regarding notifications.