test('baseElement isolates trees from one another', () => { const {getByText: getByTextInA} = render(<div>Jekyll</div>, { baseElement: treeA, }) const {getByText: getByTextInB} = render(<div>Hyde</div>, { baseElement: treeB, }) expect(() => getByTextInA('Jekyll')).not.toThrow( 'Unable to find an element with the text: Jekyll.', ) expect(() => getByTextInB('Jekyll')).toThrow( 'Unable to find an element with the text: Jekyll.', ) expect(() => getByTextInA('Hyde')).toThrow( 'Unable to find an element with the text: Hyde.', ) expect(() => getByTextInB('Hyde')).not.toThrow( 'Unable to find an element with the text: Hyde.', ) })