| 1 | let ReactDOM = require('react-dom'); |
| 2 | |
| 3 | describe('ReactDOMRoot', () => { |
| 4 | let container; |
| 5 | |
| 6 | beforeEach(() => { |
| 7 | jest.resetModules(); |
| 8 | container = document.createElement('div'); |
| 9 | ReactDOM = require('react-dom'); |
| 10 | }); |
| 11 | |
| 12 | afterEach(() => { |
| 13 | jest.restoreAllMocks(); |
| 14 | }); |
| 15 | |
| 16 | // @gate !disableLegacyMode |
| 17 | it('deprecation warning for ReactDOM.render', () => { |
| 18 | spyOnDev(console, 'error'); |
| 19 | |
| 20 | ReactDOM.render('Hi', container); |
| 21 | expect(container.textContent).toEqual('Hi'); |
| 22 | if (__DEV__) { |
| 23 | expect(console.error).toHaveBeenCalledTimes(1); |
| 24 | expect(console.error.mock.calls[0][0]).toContain( |
| 25 | 'ReactDOM.render has not been supported since React 18', |
| 26 | ); |
| 27 | } |
| 28 | }); |
| 29 | }); |