| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | * |
| 7 | * @emails react-core |
| 8 | */ |
| 9 | |
| 10 | 'use strict'; |
| 11 | |
| 12 | let React; |
| 13 | let ReactDOM; |
| 14 | let ReactDOMClient; |
| 15 | let assertConsoleErrorDev; |
| 16 | |
| 17 | describe('ReactCreateRef', () => { |
| 18 | beforeEach(() => { |
| 19 | jest.resetModules(); |
| 20 | |
| 21 | React = require('react'); |
| 22 | ReactDOM = require('react-dom'); |
| 23 | ReactDOMClient = require('react-dom/client'); |
| 24 | ({assertConsoleErrorDev} = require('internal-test-utils')); |
| 25 | }); |
| 26 | |
| 27 | it('should warn in dev if an invalid ref object is provided', () => { |
| 28 | function Wrapper({children}) { |
| 29 | return children; |
| 30 | } |
| 31 | |
| 32 | class ExampleComponent extends React.Component { |
| 33 | render() { |
| 34 | return null; |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | const root = ReactDOMClient.createRoot(document.createElement('div')); |
| 39 | ReactDOM.flushSync(() => { |
| 40 | root.render( |
| 41 | <Wrapper> |
| 42 | <div ref={{}} /> |
| 43 | </Wrapper>, |
| 44 | ); |
| 45 | }); |
| 46 | assertConsoleErrorDev([ |
| 47 | 'Unexpected ref object provided for div. ' + |
| 48 | 'Use either a ref-setter function or React.createRef().\n' + |
| 49 | ' in div (at **)', |
| 50 | ]); |
| 51 | |
| 52 | ReactDOM.flushSync(() => { |
| 53 | root.render( |
| 54 | <Wrapper> |
| 55 | <ExampleComponent ref={{}} /> |
| 56 | </Wrapper>, |
| 57 | ); |
| 58 | }); |
| 59 | assertConsoleErrorDev([ |
| 60 | 'Unexpected ref object provided for ExampleComponent. ' + |
| 61 | 'Use either a ref-setter function or React.createRef().\n' + |
| 62 | ' in ExampleComponent (at **)', |
| 63 | ]); |
| 64 | }); |
| 65 | }); |