Assert element is not rendered RTL
Using getBy... will throw an error if the element is not present.
So use either queryBy or queryAllBy.
jsx
// If queryByRole finds nothing, it'll return null
expect(screen.queryByRole('heading', { name: 'Log in' })).toBeNull();
// If you have jest-dom, you probably want to use expect().not.toBeInTheDocument()
expect(screen.queryByRole('heading', { name: 'Log in' })).not.toBeInTheDocument();
// For elements that you'd otherwise expect multiple of, maybe you wanna use this method? Or not. I'm not your dad.
expect(screen.queryAllByText('todo')).toHaveLength(0);